core.microgrid.MicrogridGridCollection.on_post() - Code Metrics - MyEMS/myems - Measure and Improve Code Quality continuously with Scrutinizer

core.microgrid.MicrogridGridCollection.on_post() F
last analyzed 2025-08-16 07:04 UTC

↳ Parent: core.microgrid
Complexity

Conditions
Size

Total Lines	135
Code Lines	105
Duplication

Lines	135
Ratio	100 %
Importance

Changes
Metric	Value
eloc	105
dl	135
loc	135
rs	0
c	0
b	0
f	0
cc	25
nop	3
How to fix Long Method Complexity

import uuid
from datetime import datetime, timedelta
import falcon
import mysql.connector
import simplejson as json
from core.useractivity import user_logger, admin_control, access_control
import config


class MicrogridCollection:
    def __init__(self):
        """"Initializes MicrogridCollection"""
        pass

    @staticmethod
    def on_options(req, resp):
        _ = req
        resp.status = falcon.HTTP_200

    @staticmethod

    def on_get(req, resp):
        access_control(req)
        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        query = (" SELECT id, name, uuid "
                 " FROM tbl_contacts ")
        cursor.execute(query)
        rows_contacts = cursor.fetchall()

        contact_dict = dict()
        if rows_contacts is not None and len(rows_contacts) > 0:
            for row in rows_contacts:
                contact_dict[row[0]] = {"id": row[0],
                                        "name": row[1],
                                        "uuid": row[2]}

        query = (" SELECT id, name, uuid "
                 " FROM tbl_cost_centers ")
        cursor.execute(query)
        rows_cost_centers = cursor.fetchall()

        cost_center_dict = dict()
        if rows_cost_centers is not None and len(rows_cost_centers) > 0:
            for row in rows_cost_centers:
                cost_center_dict[row[0]] = {"id": row[0],
                                            "name": row[1],
                                            "uuid": row[2]}
        svg_dict = dict()

        query = (" SELECT id, name, uuid "
                 " FROM tbl_svgs ")
        cursor.execute(query)
        rows_svgs = cursor.fetchall()
        if rows_svgs is not None and len(rows_svgs) > 0:
            for row in rows_svgs:
                svg_dict[row[0]] = {"id": row[0],
                                    "name": row[1],
                                    "uuid": row[2]}

        query = (" SELECT id, name, uuid, "
                 "        address, postal_code, latitude, longitude, rated_capacity, rated_power, "
                 "        contact_id, cost_center_id, serial_number, svg_id, is_cost_data_displayed, "
                 "        phase_of_lifecycle, description "
                 " FROM tbl_microgrids "
                 " ORDER BY id ")
        cursor.execute(query)
        rows_microgrids = cursor.fetchall()

        result = list()
        if rows_microgrids is not None and len(rows_microgrids) > 0:
            for row in rows_microgrids:
                meta_result = {"id": row[0],
                               "name": row[1],
                               "uuid": row[2],
                               "address": row[3],
                               "postal_code": row[4],
                               "latitude": row[5],
                               "longitude": row[6],
                               "rated_capacity": row[7],
                               "rated_power": row[8],
                               "contact": contact_dict.get(row[9], None),
                               "cost_center": cost_center_dict.get(row[10], None),
                               "serial_number": row[11],
                               "svg": svg_dict.get(row[12], None),
                               "is_cost_data_displayed": bool(row[13]),
                               "phase_of_lifecycle": row[14],
                               "description": row[15],
                               "qrcode": 'microgrid:' + row[2]}
                result.append(meta_result)

        cursor.close()
        cnx.close()
        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_NAME')
        name = str.strip(new_values['data']['name'])

        if 'address' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['address'], str) or \
                len(str.strip(new_values['data']['address'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_ADDRESS_VALUE')
        address = str.strip(new_values['data']['address'])

        if 'postal_code' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['postal_code'], str) or \
                len(str.strip(new_values['data']['postal_code'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POSTAL_CODE_VALUE')
        postal_code = str.strip(new_values['data']['postal_code'])

        if 'latitude' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['latitude'], float) or
                     isinstance(new_values['data']['latitude'], int)) or \
                new_values['data']['latitude'] < -90.0 or \
                new_values['data']['latitude'] > 90.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_LATITUDE_VALUE')
        latitude = new_values['data']['latitude']

        if 'longitude' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['longitude'], float) or
                     isinstance(new_values['data']['longitude'], int)) or \
                new_values['data']['longitude'] < -180.0 or \
                new_values['data']['longitude'] > 180.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_LONGITUDE_VALUE')
        longitude = new_values['data']['longitude']

        if 'rated_capacity' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_capacity'], float) or
                     isinstance(new_values['data']['rated_capacity'], int)) or \
                new_values['data']['rated_capacity'] <= 0.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_CAPACITY')
        rated_capacity = new_values['data']['rated_capacity']

        if 'rated_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_power'], float) or
                     isinstance(new_values['data']['rated_power'], int)) or \
                new_values['data']['rated_power'] <= 0.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_POWER_VALUE')
        rated_power = new_values['data']['rated_power']

        if 'contact_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['contact_id'], int) or \
                new_values['data']['contact_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_CONTACT_ID')
        contact_id = new_values['data']['contact_id']

        if 'cost_center_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['cost_center_id'], int) or \
                new_values['data']['cost_center_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_COST_CENTER_ID')
        cost_center_id = new_values['data']['cost_center_id']

        if 'serial_number' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['serial_number'], str) or \
                len(str.strip(new_values['data']['serial_number'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SERIAL_NUMBER')
        serial_number = str.strip(new_values['data']['serial_number'])

        if 'svg_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['svg_id'], int) or \
                new_values['data']['svg_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SVG_ID')
        svg_id = new_values['data']['svg_id']

        if 'is_cost_data_displayed' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['is_cost_data_displayed'], bool):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_IS_COST_DATA_DISPLAYED')
        is_cost_data_displayed = new_values['data']['is_cost_data_displayed']

        if 'phase_of_lifecycle' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['phase_of_lifecycle'], str) or \
                len(str.strip(new_values['data']['phase_of_lifecycle'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_PHASE_OF_LIFECYCLE')
        phase_of_lifecycle = str.strip(new_values['data']['phase_of_lifecycle'])

        if 'description' in new_values['data'].keys() and \
                new_values['data']['description'] is not None and \
                len(str(new_values['data']['description'])) > 0:
            description = str.strip(new_values['data']['description'])
        else:
            description = None

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE name = %s ", (name,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_contacts "
                       " WHERE id = %s ",
                       (new_values['data']['contact_id'],))
        row = cursor.fetchone()
        if row is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.CONTACT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_cost_centers "
                       " WHERE id = %s ",
                       (new_values['data']['cost_center_id'],))
        row = cursor.fetchone()
        if row is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.COST_CENTER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_svgs "
                       " WHERE id = %s ",
                       (svg_id,))
        row = cursor.fetchone()
        if row is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.SVG_NOT_FOUND')

        add_values = (" INSERT INTO tbl_microgrids "
                      "    (name, uuid, address, postal_code, latitude, longitude, rated_capacity, rated_power, "
                      "     contact_id, cost_center_id, serial_number, svg_id, is_cost_data_displayed, "
                      "     phase_of_lifecycle, description) "
                      " VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    address,
                                    postal_code,
                                    latitude,
                                    longitude,
                                    rated_capacity,
                                    rated_power,
                                    contact_id,
                                    cost_center_id,
                                    serial_number,
                                    svg_id,
                                    is_cost_data_displayed,
                                    phase_of_lifecycle,
                                    description))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(new_id)


class MicrogridItem:
    def __init__(self):
        """"Initializes MicrogridItem"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod

    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        query = (" SELECT id, name, uuid "
                 " FROM tbl_contacts ")
        cursor.execute(query)
        rows_contacts = cursor.fetchall()

        contact_dict = dict()
        if rows_contacts is not None and len(rows_contacts) > 0:
            for row in rows_contacts:
                contact_dict[row[0]] = {"id": row[0],
                                        "name": row[1],
                                        "uuid": row[2]}

        query = (" SELECT id, name, uuid "
                 " FROM tbl_cost_centers ")
        cursor.execute(query)
        rows_cost_centers = cursor.fetchall()

        cost_center_dict = dict()
        if rows_cost_centers is not None and len(rows_cost_centers) > 0:
            for row in rows_cost_centers:
                cost_center_dict[row[0]] = {"id": row[0],
                                            "name": row[1],
                                            "uuid": row[2]}
        svg_dict = dict()

        query = (" SELECT id, name, uuid "
                 " FROM tbl_svgs ")
        cursor.execute(query)
        rows_svgs = cursor.fetchall()
        if rows_svgs is not None and len(rows_svgs) > 0:
            for row in rows_svgs:
                svg_dict[row[0]] = {"id": row[0],
                                    "name": row[1],
                                    "uuid": row[2]}

        query = (" SELECT id, name, uuid, "
                 "        address, postal_code, latitude, longitude, rated_capacity, rated_power, "
                 "        contact_id, cost_center_id, serial_number, svg_id, is_cost_data_displayed, "
                 "        phase_of_lifecycle, description "
                 " FROM tbl_microgrids "
                 " WHERE id = %s ")
        cursor.execute(query, (id_,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "address": row[3],
                           "postal_code": row[4],
                           "latitude": row[5],
                           "longitude": row[6],
                           "rated_capacity": row[7],
                           "rated_power": row[8],
                           "contact": contact_dict.get(row[9], None),
                           "cost_center": cost_center_dict.get(row[10], None),
                           "serial_number": row[11],
                           "svg": svg_dict.get(row[12], None),
                           "is_cost_data_displayed": bool(row[13]),
                           "phase_of_lifecycle": row[14],
                           "description": row[15],
                           "qrcode": 'microgrid:' + row[2]}

        resp.text = json.dumps(meta_result)

    @staticmethod

    @user_logger
    def on_delete(req, resp, id_):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # check relation with spaces
        cursor.execute(" SELECT id "
                       " FROM  tbl_spaces_microgrids "
                       " WHERE microgrid_id = %s ", (id_,))
        rows_spaces = cursor.fetchall()
        if rows_spaces is not None and len(rows_spaces) > 0:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.THERE_IS_RELATION_WITH_SPACES')

        # check relation with power plants
        cursor.execute(" SELECT id "
                       " FROM tbl_virtual_power_plants_microgrids "
                       " WHERE microgrid_id = %s ",
                       (id_,))
        rows_power_plants = cursor.fetchall()
        if rows_power_plants is not None and len(rows_power_plants) > 0:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.THERE_IS_RELATION_WITH_VIRTUAL_POWER_PLANTS')

        cursor.execute(" DELETE FROM tbl_microgrids_batteries WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_commands WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_power_conversion_systems WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_evchargers WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_generators WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_grids WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_heatpumps WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_loads WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_photovoltaics WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_sensors WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids_users WHERE microgrid_id = %s ", (id_,))
        cnx.commit()
        cursor.execute(" DELETE FROM tbl_microgrids WHERE id = %s ", (id_,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')

        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_NAME')
        name = str.strip(new_values['data']['name'])

        if 'address' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['address'], str) or \
                len(str.strip(new_values['data']['address'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_ADDRESS_VALUE')
        address = str.strip(new_values['data']['address'])

        if 'postal_code' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['postal_code'], str) or \
                len(str.strip(new_values['data']['postal_code'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POSTAL_CODE_VALUE')
        postal_code = str.strip(new_values['data']['postal_code'])

        if 'latitude' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['latitude'], float) or
                     isinstance(new_values['data']['latitude'], int)) or \
                new_values['data']['latitude'] < -90.0 or \
                new_values['data']['latitude'] > 90.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_LATITUDE_VALUE')
        latitude = new_values['data']['latitude']

        if 'longitude' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['longitude'], float) or
                     isinstance(new_values['data']['longitude'], int)) or \
                new_values['data']['longitude'] < -180.0 or \
                new_values['data']['longitude'] > 180.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_LONGITUDE_VALUE')
        longitude = new_values['data']['longitude']

        if 'rated_capacity' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_capacity'], float) or
                     isinstance(new_values['data']['rated_capacity'], int)) or \
                new_values['data']['rated_capacity'] <= 0.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_CAPACITY')
        rated_capacity = new_values['data']['rated_capacity']

        if 'rated_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_power'], float) or
                     isinstance(new_values['data']['rated_power'], int)) or \
                new_values['data']['rated_power'] <= 0.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_POWER_VALUE')
        rated_power = new_values['data']['rated_power']

        if 'contact_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['contact_id'], int) or \
                new_values['data']['contact_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_CONTACT_ID')
        contact_id = new_values['data']['contact_id']

        if 'cost_center_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['cost_center_id'], int) or \
                new_values['data']['cost_center_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_COST_CENTER_ID')
        cost_center_id = new_values['data']['cost_center_id']

        if 'serial_number' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['serial_number'], str) or \
                len(str.strip(new_values['data']['serial_number'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SERIAL_NUMBER')
        serial_number = str.strip(new_values['data']['serial_number'])

        if 'svg_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['svg_id'], int) or \
                new_values['data']['svg_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SVG_ID')
        svg_id = new_values['data']['svg_id']

        if 'is_cost_data_displayed' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['is_cost_data_displayed'], bool):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_IS_COST_DATA_DISPLAYED')
        is_cost_data_displayed = new_values['data']['is_cost_data_displayed']

        if 'phase_of_lifecycle' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['phase_of_lifecycle'], str) or \
                len(str.strip(new_values['data']['phase_of_lifecycle'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_PHASE_OF_LIFECYCLE')
        phase_of_lifecycle = str.strip(new_values['data']['phase_of_lifecycle'])

        if 'description' in new_values['data'].keys() and \
                new_values['data']['description'] is not None and \
                len(str(new_values['data']['description'])) > 0:
            description = str.strip(new_values['data']['description'])
        else:
            description = None

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE name = %s AND id != %s ", (name, id_))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_contacts "
                       " WHERE id = %s ",
                       (new_values['data']['contact_id'],))
        row = cursor.fetchone()
        if row is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.CONTACT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_cost_centers "
                       " WHERE id = %s ",
                       (new_values['data']['cost_center_id'],))
        row = cursor.fetchone()
        if row is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.COST_CENTER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_svgs "
                       " WHERE id = %s ",
                       (new_values['data']['svg_id'],))
        row = cursor.fetchone()
        if row is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.SVG_NOT_FOUND')

        update_row = (" UPDATE tbl_microgrids "
                      " SET name = %s, address = %s, postal_code = %s, latitude = %s, longitude = %s, "
                      "     rated_capacity = %s, rated_power = %s, "
                      "     contact_id = %s, cost_center_id = %s, "
                      "     serial_number = %s, svg_id = %s, is_cost_data_displayed = %s, phase_of_lifecycle = %s, "
                      "     description = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (name,
                                    address,
                                    postal_code,
                                    latitude,
                                    longitude,
                                    rated_capacity,
                                    rated_power,
                                    contact_id,
                                    cost_center_id,
                                    serial_number,
                                    svg_id,
                                    is_cost_data_displayed,
                                    phase_of_lifecycle,
                                    description,
                                    id_))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridBatteryCollection:
    def __init__(self):
        """Initializes MicrogridBatteryCollection"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod

    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, "
                 "        battery_state_point_id, soc_point_id, power_point_id, "
                 "        charge_meter_id, discharge_meter_id, rated_capacity, rated_power, nominal_voltage "
                 " FROM tbl_microgrids_batteries "
                 " WHERE microgrid_id = %s "
                 " ORDER BY name ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0],
                               "name": row[1],
                               "uuid": row[2],
                               "battery_state_point": point_dict.get(row[3]),
                               "soc_point": point_dict.get(row[4]),
                               "power_point": point_dict.get(row[5]),
                               "charge_meter": meter_dict.get(row[6]),
                               "discharge_meter": meter_dict.get(row[7]),
                               "rated_capacity": row[8],
                               "rated_power": row[9],
                               "nominal_voltage": row[10]}
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')

        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_BATTERY_NAME')
        name = str.strip(new_values['data']['name'])

        if 'battery_state_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['battery_state_point_id'], int) or \
                new_values['data']['battery_state_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_BATTERY_STATE_POINT_ID')
        battery_state_point_id = new_values['data']['battery_state_point_id']

        if 'soc_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['soc_point_id'], int) or \
                new_values['data']['soc_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SOC_POINT_ID')
        soc_point_id = new_values['data']['soc_point_id']

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'charge_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['charge_meter_id'], int) or \
                new_values['data']['charge_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_CHARGE_METER_ID')
        charge_meter_id = new_values['data']['charge_meter_id']

        if 'discharge_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['discharge_meter_id'], int) or \
                new_values['data']['discharge_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_DISCHARGE_METER_ID')
        discharge_meter_id = new_values['data']['discharge_meter_id']

        if 'rated_capacity' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_capacity'], float) or
                     isinstance(new_values['data']['rated_capacity'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_CAPACITY')
        rated_capacity = float(new_values['data']['rated_capacity'])

        if 'rated_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_power'], float) or
                     isinstance(new_values['data']['rated_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_POWER')
        rated_power = float(new_values['data']['rated_power'])

        if 'nominal_voltage' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['nominal_voltage'], float) or
                     isinstance(new_values['data']['nominal_voltage'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_NOMINAL_VOLTAGE')
        nominal_voltage = float(new_values['data']['nominal_voltage'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_batteries "
                       " WHERE microgrid_id = %s AND name = %s ",
                       (id_, name,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_BATTERY_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (battery_state_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.BATTERY_STATE_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (soc_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.SOC_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (charge_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.CHARGE_METER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (discharge_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.DISCHARGE_METER_NOT_FOUND')

        add_values = (" INSERT INTO tbl_microgrids_batteries "
                      "    (name, uuid, microgrid_id, "
                      "     battery_state_point_id, soc_point_id, power_point_id, "
                      "     charge_meter_id, discharge_meter_id, rated_capacity, rated_power, nominal_voltage) "
                      " VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    id_,
                                    battery_state_point_id,
                                    soc_point_id,
                                    power_point_id,
                                    charge_meter_id,
                                    discharge_meter_id,
                                    rated_capacity,
                                    rated_power,
                                    nominal_voltage))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(id_) + '/batteries/' + str(new_id)


class MicrogridBatteryItem:
    def __init__(self):
        """Initializes MicrogridBatteryItem"""
        pass

    @staticmethod
    def on_options(req, resp, id_, bid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod

    def on_get(req, resp, id_, bid):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not bid.isdigit() or int(bid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_BATTERY_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query microgrid dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_microgrids ")
        cursor.execute(query)
        rows_microgrids = cursor.fetchall()

        microgrid_dict = dict()
        if rows_microgrids is not None and len(rows_microgrids) > 0:
            for row in rows_microgrids:
                microgrid_dict[row[0]] = {"id": row[0],
                                          "name": row[1],
                                          "uuid": row[2]}
        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, microgrid_id, "
                 "       battery_state_point_id, soc_point_id, power_point_id, "
                 "       charge_meter_id, discharge_meter_id, rated_capacity, rated_power, nominal_voltage "
                 " FROM tbl_microgrids_batteries "
                 " WHERE id = %s ")
        cursor.execute(query, (bid,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_BATTERY_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "microgrid": microgrid_dict.get(row[3]),
                           "battery_state_point": point_dict.get(row[4]),
                           "soc_point": point_dict.get(row[5]),
                           "power_point": point_dict.get(row[6]),
                           "charge_meter": meter_dict.get(row[7]),
                           "discharge_meter": meter_dict.get(row[8]),
                           "rated_capacity": row[9],
                           "rated_power": row[10],
                           "nominal_voltage": row[11]}

        resp.text = json.dumps(meta_result)

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, bid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not bid.isdigit() or int(bid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_BATTERY_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_batteries "
                       " WHERE id = %s ", (bid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_BATTERY_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_batteries "
                       " WHERE id = %s ", (bid,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_, bid):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not bid.isdigit() or int(bid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_BATTERY_ID')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_BATTERY_NAME')
        name = str.strip(new_values['data']['name'])

        if 'battery_state_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['battery_state_point_id'], int) or \
                new_values['data']['battery_state_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_BATTERY_STATE_POINT_ID')
        battery_state_point_id = new_values['data']['battery_state_point_id']

        if 'soc_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['soc_point_id'], int) or \
                new_values['data']['soc_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SOC_POINT_ID')
        soc_point_id = new_values['data']['soc_point_id']

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'charge_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['charge_meter_id'], int) or \
                new_values['data']['charge_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_CHARGE_METER_ID')
        charge_meter_id = new_values['data']['charge_meter_id']

        if 'discharge_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['discharge_meter_id'], int) or \
                new_values['data']['discharge_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_DISCHARGE_METER_ID')
        discharge_meter_id = new_values['data']['discharge_meter_id']

        if 'rated_capacity' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_capacity'], float) or
                     isinstance(new_values['data']['rated_capacity'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_CAPACITY')
        rated_capacity = float(new_values['data']['rated_capacity'])

        if 'rated_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_power'], float) or
                     isinstance(new_values['data']['rated_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_POWER')
        rated_power = float(new_values['data']['rated_power'])

        if 'nominal_voltage' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['nominal_voltage'], float) or
                     isinstance(new_values['data']['nominal_voltage'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_NOMINAL_VOLTAGE')
        nominal_voltage = float(new_values['data']['nominal_voltage'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ",
                       (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_batteries "
                       " WHERE id = %s ", (bid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_BATTERY_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_batteries "
                       " WHERE microgrid_id = %s AND name = %s AND id != %s ",
                       (id_, name, bid))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_BATTERY_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (battery_state_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.BATTERY_STATE_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (soc_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.SOC_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (charge_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.CHARGE_METER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (discharge_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.DISCHARGE_METER_NOT_FOUND')

        update_row = (" UPDATE tbl_microgrids_batteries "
                      " SET name = %s, microgrid_id = %s, "
                      "     battery_state_point_id = %s, soc_point_id = %s, power_point_id = %s, "
                      "     charge_meter_id = %s, discharge_meter_id = %s, rated_capacity = %s, rated_power = %s,"
                      "     nominal_voltage = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (name,
                                    id_,
                                    battery_state_point_id,
                                    soc_point_id,
                                    power_point_id,
                                    charge_meter_id,
                                    discharge_meter_id,
                                    rated_capacity,
                                    rated_power,
                                    nominal_voltage,
                                    bid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridCommandCollection:
    def __init__(self):
        """Initializes Class"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        query = (" SELECT c.id, c.name, c.uuid "
                 " FROM tbl_microgrids m, tbl_microgrids_commands mc, tbl_commands c "
                 " WHERE mc.microgrid_id = m.id AND c.id = mc.command_id AND m.id = %s "
                 " ORDER BY c.id ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0], "name": row[1], "uuid": row[2]}
                result.append(meta_result)

        resp.text = json.dumps(result)


class MicrogridEVChargerCollection:

    def __init__(self):
        """Initializes MicrogridEVChargerCollection"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, "
                 "       power_point_id, meter_id, rated_output_power "
                 " FROM tbl_microgrids_evchargers "
                 " WHERE microgrid_id = %s "
                 " ORDER BY name ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0],
                               "name": row[1],
                               "uuid": row[2],
                               "power_point": point_dict.get(row[3]),
                               "meter": meter_dict.get(row[4]),
                               "rated_output_power": row[5]}
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')

        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_EVCHARGER_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['meter_id'], int) or \
                new_values['data']['meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_METER_ID')
        meter_id = new_values['data']['meter_id']

        if 'rated_output_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_output_power'], float) or
                     isinstance(new_values['data']['rated_output_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_OUTPUT_POWER')
        rated_output_power = float(new_values['data']['rated_output_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ",
                       (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_evchargers "
                       " WHERE microgrid_id = %s AND name = %s ",
                       (id_, name,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_EVCHARGER_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.METER_NOT_FOUND')

        add_values = (" INSERT INTO tbl_microgrids_evchargers "
                      "    (name, uuid, microgrid_id, power_point_id, meter_id, rated_output_power) "
                      " VALUES (%s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    id_,
                                    power_point_id,
                                    meter_id,
                                    rated_output_power))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + id_ + '/evchargers/' + str(new_id)


class MicrogridEVChargerItem:

    def __init__(self):
        """Initializes MicrogridEVChargerItem"""
        pass

    @staticmethod
    def on_options(req, resp, id_, eid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_, eid):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not eid.isdigit() or int(eid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_EVCHARGER_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query microgrid dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_microgrids ")
        cursor.execute(query)
        rows_microgrids = cursor.fetchall()

        microgrid_dict = dict()
        if rows_microgrids is not None and len(rows_microgrids) > 0:
            for row in rows_microgrids:
                microgrid_dict[row[0]] = {"id": row[0],
                                          "name": row[1],
                                          "uuid": row[2]}
        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, microgrid_id, power_point_id, meter_id, rated_output_power "
                 " FROM tbl_microgrids_evchargers "
                 " WHERE id = %s ")
        cursor.execute(query, (eid,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_EVCHARGER_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "microgrid": microgrid_dict.get(row[3]),
                           "power_point": point_dict.get(row[4]),
                           "meter": meter_dict.get(row[5]),
                           "rated_output_power": row[6]}

        resp.text = json.dumps(meta_result)

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, eid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not eid.isdigit() or int(eid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_EVCHARGER_ID')
        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_evchargers "
                       " WHERE id = %s ", (eid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_EVCHARGER_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_evchargers "
                       " WHERE id = %s ", (eid,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_, eid):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not eid.isdigit() or int(eid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_EVCHARGER_ID')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_EVCHARGER_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['meter_id'], int) or \
                new_values['data']['meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_METER_ID')
        meter_id = new_values['data']['meter_id']

        if 'rated_output_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_output_power'], float) or
                     isinstance(new_values['data']['rated_output_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_OUTPUT_POWER')
        rated_output_power = float(new_values['data']['rated_output_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_evchargers "
                       " WHERE id = %s ", (eid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_EVCHARGER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_evchargers "
                       " WHERE microgrid_id = %s AND name = %s AND id != %s ",
                       (id_, name, eid))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_EVCHARGER_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.METER_NOT_FOUND')

        update_row = (" UPDATE tbl_microgrids_evchargers "
                      " SET name = %s, microgrid_id = %s, power_point_id = %s, meter_id = %s, rated_output_power = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (name,
                                    id_,
                                    power_point_id,
                                    meter_id,
                                    rated_output_power,
                                    eid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridGeneratorCollection:

    def __init__(self):
        """Initializes MicrogridGeneratorCollection"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, "
                 "        power_point_id, meter_id, rated_output_power "
                 " FROM tbl_microgrids_generators "
                 " WHERE microgrid_id = %s "
                 " ORDER BY name ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0],
                               "name": row[1],
                               "uuid": row[2],
                               "power_point": point_dict.get(row[3]),
                               "meter": meter_dict.get(row[4]),
                               "rated_output_power": row[5]}
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GENERATOR_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['meter_id'], int) or \
                new_values['data']['meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_METER_ID')
        meter_id = new_values['data']['meter_id']

        if 'rated_output_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_output_power'], float) or
                     isinstance(new_values['data']['rated_output_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_OUTPUT_POWER')
        rated_output_power = float(new_values['data']['rated_output_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ",
                       (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_generators "
                       " WHERE microgrid_id = %s AND name = %s ",
                       (id_, name,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_GENERATOR_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.METER_NOT_FOUND')

        add_values = (" INSERT INTO tbl_microgrids_generators "
                      "    (name, uuid, microgrid_id, power_point_id, meter_id, rated_output_power) "
                      " VALUES (%s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    id_,
                                    power_point_id,
                                    meter_id,
                                    rated_output_power))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(id_) + '/generators/' + str(new_id)


class MicrogridGeneratorItem:

    def __init__(self):
        """Initializes MicrogridGeneratorItem"""
        pass

    @staticmethod
    def on_options(req, resp, id_, gid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_, gid):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not gid.isdigit() or int(gid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GENERATOR_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query microgrid dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_microgrids ")
        cursor.execute(query)
        rows_microgrids = cursor.fetchall()

        microgrid_dict = dict()
        if rows_microgrids is not None and len(rows_microgrids) > 0:
            for row in rows_microgrids:
                microgrid_dict[row[0]] = {"id": row[0],
                                          "name": row[1],
                                          "uuid": row[2]}
        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, microgrid_id, power_point_id, meter_id, rated_output_power "
                 " FROM tbl_microgrids_generators "
                 " WHERE id = %s ")
        cursor.execute(query, (gid,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_GENERATOR_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "microgrid": microgrid_dict.get(row[3]),
                           "power_point": point_dict.get(row[4]),
                           "meter": meter_dict.get(row[5]),
                           "rated_output_power": row[6]}

        resp.text = json.dumps(meta_result)

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, gid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not gid.isdigit() or int(gid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GENERATOR_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_generators "
                       " WHERE id = %s ", (gid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_GENERATOR_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_generators "
                       " WHERE id = %s ", (gid,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_, gid):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not gid.isdigit() or int(gid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GENERATOR_ID')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GENERATOR_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['meter_id'], int) or \
                new_values['data']['meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_METER_ID')
        meter_id = new_values['data']['meter_id']

        if 'rated_output_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_output_power'], float) or
                     isinstance(new_values['data']['rated_output_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_OUTPUT_POWER')
        rated_output_power = float(new_values['data']['rated_output_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_generators "
                       " WHERE id = %s ", (gid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_GENERATOR_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_generators "
                       " WHERE microgrid_id = %s AND name = %s AND id != %s ",
                       (id_, name, gid))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_GENERATOR_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.METER_NOT_FOUND')

        update_row = (" UPDATE tbl_microgrids_generators "
                      " SET name = %s, microgrid_id = %s, power_point_id = %s, meter_id = %s, rated_output_power = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (name,
                                    id_,
                                    power_point_id,
                                    meter_id,
                                    rated_output_power,
                                    gid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridGridCollection:

    def __init__(self):
        """Initializes MicrogridGridCollection"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, "
                 "        power_point_id, buy_meter_id, sell_meter_id, capacity "
                 " FROM tbl_microgrids_grids "
                 " WHERE microgrid_id = %s "
                 " ORDER BY name ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0],
                               "name": row[1],
                               "uuid": row[2],
                               "power_point": point_dict.get(row[3]),
                               "buy_meter": meter_dict.get(row[4]),
                               "sell_meter": meter_dict.get(row[5]),
                               "capacity": row[6]}
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GRID_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'buy_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['buy_meter_id'], int) or \
                new_values['data']['buy_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_BUY_METER_ID')
        buy_meter_id = new_values['data']['buy_meter_id']

        if 'sell_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['sell_meter_id'], int) or \
                new_values['data']['sell_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SELL_METER_ID')
        sell_meter_id = new_values['data']['sell_meter_id']

        if 'capacity' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['capacity'], float) or
                     isinstance(new_values['data']['capacity'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_CAPACITY')
        capacity = float(new_values['data']['capacity'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ",
                       (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_grids "
                       " WHERE microgrid_id = %s AND name = %s ",
                       (id_, name,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_GRID_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (buy_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.BUY_METER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (sell_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.SELL_METER_NOT_FOUND')

        add_values = (" INSERT INTO tbl_microgrids_grids "
                      "    (name, uuid, microgrid_id, power_point_id, buy_meter_id, sell_meter_id, capacity) "
                      " VALUES (%s, %s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    id_,
                                    power_point_id,
                                    buy_meter_id,
                                    sell_meter_id,
                                    capacity))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(id_) + '/grids/' + str(new_id)


class MicrogridGridItem:

    def __init__(self):
        """Initializes MicrogridGridItem"""
        pass

    @staticmethod
    def on_options(req, resp, id_, gid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_, gid):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not gid.isdigit() or int(gid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query microgrid dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_microgrids ")
        cursor.execute(query)
        rows_microgrids = cursor.fetchall()

        microgrid_dict = dict()
        if rows_microgrids is not None and len(rows_microgrids) > 0:
            for row in rows_microgrids:
                microgrid_dict[row[0]] = {"id": row[0],
                                          "name": row[1],
                                          "uuid": row[2]}
        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, microgrid_id, power_point_id, buy_meter_id, sell_meter_id, capacity "
                 " FROM tbl_microgrids_grids "
                 " WHERE id = %s ")
        cursor.execute(query, (gid,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_GRID_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "microgrid": microgrid_dict.get(row[3]),
                           "power_point": point_dict.get(row[4]),
                           "buy_meter": meter_dict.get(row[5]),
                           "sell_meter": meter_dict.get(row[6]),
                           "capacity": row[7]}

        resp.text = json.dumps(meta_result)

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, gid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not gid.isdigit() or int(gid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_grids "
                       " WHERE id = %s ", (gid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_GRID_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_grids "
                       " WHERE id = %s ", (gid,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_, gid):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        if not gid.isdigit() or int(gid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GRID_ID')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_GRID_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'buy_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['buy_meter_id'], int) or \
                new_values['data']['buy_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_BUY_METER_ID')
        buy_meter_id = new_values['data']['buy_meter_id']

        if 'sell_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['sell_meter_id'], int) or \
                new_values['data']['sell_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_METER_ID')
        sell_meter_id = new_values['data']['sell_meter_id']

        if 'capacity' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['capacity'], float) or
                     isinstance(new_values['data']['capacity'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_CAPACITY')
        capacity = float(new_values['data']['capacity'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_grids "
                       " WHERE id = %s ", (gid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_GRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_grids "
                       " WHERE microgrid_id = %s AND name = %s AND id != %s ",
                       (id_, name, gid))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_GRID_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (buy_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.BUY_METER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (sell_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.SELL_METER_NOT_FOUND')

        update_row = (" UPDATE tbl_microgrids_grids "
                      " SET name = %s, microgrid_id = %s, "
                      "     power_point_id = %s, buy_meter_id = %s, sell_meter_id = %s, capacity = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (name,
                                    id_,
                                    power_point_id,
                                    buy_meter_id,
                                    sell_meter_id,
                                    capacity,
                                    gid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridHeatpumpCollection:
    def __init__(self):
        """Initializes MicrogridHeatpumpCollection"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, "
                 "        power_point_id, electricity_meter_id, heat_meter_id, cooling_meter_id, rated_input_power "
                 " FROM tbl_microgrids_heatpumps "
                 " WHERE microgrid_id = %s "
                 " ORDER BY name ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0],
                               "name": row[1],
                               "uuid": row[2],
                               "power_point": point_dict.get(row[3], None),
                               "electricity_meter": meter_dict.get(row[4], None),
                               "heat_meter": meter_dict.get(row[5], None),
                               "cooling_meter": meter_dict.get(row[6], None),
                               "rated_input_power": row[7]}
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_HEATPUMP_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'electricity_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['electricity_meter_id'], int) or \
                new_values['data']['electricity_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_ELECTRICITY_METER_ID')
        electricity_meter_id = new_values['data']['electricity_meter_id']

        if 'heat_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['heat_meter_id'], int) or \
                new_values['data']['heat_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SELL_METER_ID')
        heat_meter_id = new_values['data']['heat_meter_id']

        if 'cooling_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['cooling_meter_id'], int) or \
                new_values['data']['cooling_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_COOLING_METER_ID')
        cooling_meter_id = new_values['data']['cooling_meter_id']

        if 'rated_input_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_input_power'], float) or
                     isinstance(new_values['data']['rated_input_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_INPUT_POWER')
        rated_input_power = float(new_values['data']['rated_input_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ",
                       (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_heatpumps "
                       " WHERE microgrid_id = %s AND name = %s ",
                       (id_, name,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_HEATPUMP_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (electricity_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.ELECTRICITY_METER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (heat_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.HEAT_METER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (cooling_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.COOLING_METER_NOT_FOUND')

        add_values = (" INSERT INTO tbl_microgrids_heatpumps "
                      "    (name, uuid, microgrid_id, "
                      "     power_point_id, electricity_meter_id, heat_meter_id, cooling_meter_id, rated_input_power) "
                      " VALUES (%s, %s, %s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    id_,
                                    power_point_id,
                                    electricity_meter_id,
                                    heat_meter_id,
                                    cooling_meter_id,
                                    rated_input_power))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(id_) + '/heatpumps/' + str(new_id)


class MicrogridHeatpumpItem:
    def __init__(self):
        """Initializes MicrogridHeatpumpItem"""
        pass

    @staticmethod
    def on_options(req, resp, id_, hid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_, hid):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not hid.isdigit() or int(hid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_HEATPUMP_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query microgrid dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_microgrids ")
        cursor.execute(query)
        rows_microgrids = cursor.fetchall()

        microgrid_dict = dict()
        if rows_microgrids is not None and len(rows_microgrids) > 0:
            for row in rows_microgrids:
                microgrid_dict[row[0]] = {"id": row[0],
                                          "name": row[1],
                                          "uuid": row[2]}
        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, microgrid_id, "
                 "        power_point_id, electricity_meter_id, heat_meter_id, cooling_meter_id, rated_input_power "
                 " FROM tbl_microgrids_heatpumps "
                 " WHERE id = %s ")
        cursor.execute(query, (hid,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_HEATPUMP_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "microgrid": microgrid_dict.get(row[3], None),
                           "power_point": point_dict.get(row[4], None),
                           "electricity_meter": meter_dict.get(row[5], None),
                           "heat_meter": meter_dict.get(row[6], None),
                           "cooling_meter": meter_dict.get(row[7], None),
                           "rated_input_power": row[8]}

        resp.text = json.dumps(meta_result)

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, hid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not hid.isdigit() or int(hid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_HEATPUMP_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_heatpumps "
                       " WHERE id = %s ", (hid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_HEATPUMP_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_heatpumps "
                       " WHERE id = %s ", (hid,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_, hid):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not hid.isdigit() or int(hid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_HEATPUMP_ID')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_HEATPUMP_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'electricity_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['electricity_meter_id'], int) or \
                new_values['data']['electricity_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_ELECTRICITY_METER_ID')
        electricity_meter_id = new_values['data']['electricity_meter_id']

        if 'heat_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['heat_meter_id'], int) or \
                new_values['data']['heat_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_HEAT_METER_ID')
        heat_meter_id = new_values['data']['heat_meter_id']

        if 'cooling_meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['cooling_meter_id'], int) or \
                new_values['data']['cooling_meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_COOLING_METER_ID')
        cooling_meter_id = new_values['data']['cooling_meter_id']

        if 'rated_input_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_input_power'], float) or
                     isinstance(new_values['data']['rated_input_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_INPUT_POWER')
        rated_input_power = float(new_values['data']['rated_input_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_heatpumps "
                       " WHERE id = %s ", (hid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_HEATPUMP_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_heatpumps "
                       " WHERE microgrid_id = %s AND name = %s AND id != %s ",
                       (id_, name, hid))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_HEATPUMP_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (electricity_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.ELECTRICITY_METER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (heat_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.HEAT_METER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (cooling_meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.COOLING_METER_NOT_FOUND')

        update_row = (" UPDATE tbl_microgrids_heatpumps "
                      " SET name = %s, microgrid_id = %s, "
                      "     power_point_id = %s, electricity_meter_id = %s, heat_meter_id = %s, cooling_meter_id = %s, "
                      "     rated_input_power = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (name,
                                    id_,
                                    power_point_id,
                                    electricity_meter_id,
                                    heat_meter_id,
                                    heat_meter_id,
                                    rated_input_power,
                                    hid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridLoadCollection:

    def __init__(self):
        """Initializes MicrogridLoadCollection"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, "
                 "        power_point_id, meter_id, rated_input_power "
                 " FROM tbl_microgrids_loads "
                 " WHERE microgrid_id = %s "
                 " ORDER BY name ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0],
                               "name": row[1],
                               "uuid": row[2],
                               "power_point": point_dict.get(row[3], None),
                               "meter": meter_dict.get(row[4], None),
                               "rated_input_power": row[5]}
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_LOAD_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['meter_id'], int) or \
                new_values['data']['meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_METER_ID')
        meter_id = new_values['data']['meter_id']

        if 'rated_input_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_input_power'], float) or
                     isinstance(new_values['data']['rated_input_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_INPUT_POWER')
        rated_input_power = float(new_values['data']['rated_input_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ",
                       (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_loads "
                       " WHERE microgrid_id = %s AND name = %s ",
                       (id_, name,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_LOAD_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.METER_NOT_FOUND')

        add_values = (" INSERT INTO tbl_microgrids_loads "
                      "    (name, uuid, microgrid_id, power_point_id, meter_id, rated_input_power) "
                      " VALUES (%s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    id_,
                                    power_point_id,
                                    meter_id,
                                    rated_input_power))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(id_) + '/loads/' + str(new_id)


class MicrogridLoadItem:
    def __init__(self):
        """Initializes MicrogridLoadItem"""
        pass

    @staticmethod
    def on_options(req, resp, id_, lid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_, lid):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not lid.isdigit() or int(lid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_LOAD_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query microgrid dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_microgrids ")
        cursor.execute(query)
        rows_microgrids = cursor.fetchall()

        microgrid_dict = dict()
        if rows_microgrids is not None and len(rows_microgrids) > 0:
            for row in rows_microgrids:
                microgrid_dict[row[0]] = {"id": row[0],
                                          "name": row[1],
                                          "uuid": row[2]}
        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, microgrid_id, power_point_id, meter_id, rated_input_power "
                 " FROM tbl_microgrids_loads "
                 " WHERE id = %s ")
        cursor.execute(query, (lid,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_LOAD_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "microgrid": microgrid_dict.get(row[3], None),
                           "power_point": point_dict.get(row[4], None),
                           "meter": meter_dict.get(row[5], None),
                           "rated_input_power": row[6]}

        resp.text = json.dumps(meta_result)

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, lid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not lid.isdigit() or int(lid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_LOAD_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_loads "
                       " WHERE id = %s ", (lid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_LOAD_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_loads "
                       " WHERE id = %s ", (lid,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_, lid):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not lid.isdigit() or int(lid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_LOAD_ID')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_LOAD_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['meter_id'], int) or \
                new_values['data']['meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_METER_ID')
        meter_id = new_values['data']['meter_id']

        if 'rated_input_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_input_power'], float) or
                     isinstance(new_values['data']['rated_input_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_INPUT_POWER')
        rated_input_power = float(new_values['data']['rated_input_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_loads "
                       " WHERE id = %s ", (lid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_LOAD_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_loads "
                       " WHERE microgrid_id = %s AND name = %s AND id != %s ",
                       (id_, name, lid))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_LOAD_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.METER_NOT_FOUND')

        update_row = (" UPDATE tbl_microgrids_loads "
                      " SET name = %s, microgrid_id = %s, power_point_id = %s, meter_id = %s, rated_input_power = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (name,
                                    id_,
                                    power_point_id,
                                    meter_id,
                                    rated_input_power,
                                    lid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridPhotovoltaicCollection:

    def __init__(self):
        """Initializes MicrogridPhotovoltaicCollection"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, "
                 "        power_point_id, meter_id, rated_power "
                 " FROM tbl_microgrids_photovoltaics "
                 " WHERE microgrid_id = %s "
                 " ORDER BY name ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0],
                               "name": row[1],
                               "uuid": row[2],
                               "power_point": point_dict.get(row[3], None),
                               "meter": meter_dict.get(row[4], None),
                               "rated_power": row[5],
                               }
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_PHOTOVOLTAIC_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['meter_id'], int) or \
                new_values['data']['meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_METER_ID')
        meter_id = new_values['data']['meter_id']

        if 'rated_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_power'], float) or
                     isinstance(new_values['data']['rated_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_POWER')
        rated_power = float(new_values['data']['rated_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ",
                       (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_photovoltaics "
                       " WHERE microgrid_id = %s AND name = %s ",
                       (id_, name,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_PHOTOVOLTAIC_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.METER_NOT_FOUND')

        add_values = (" INSERT INTO tbl_microgrids_photovoltaics "
                      "    (name, uuid, microgrid_id, power_point_id, meter_id, rated_power) "
                      " VALUES (%s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    id_,
                                    power_point_id,
                                    meter_id,
                                    rated_power))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids' + str(id_) + '/photovoltaics/' + str(new_id)


class MicrogridPhotovoltaicItem:
    def __init__(self):
        """Initializes MicrogridPhotovoltaicItem"""
        pass

    @staticmethod
    def on_options(req, resp, id_, pid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_, pid):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not pid.isdigit() or int(pid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_PHOTOVOLTAIC_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query microgrid dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_microgrids ")
        cursor.execute(query)
        rows_microgrids = cursor.fetchall()

        microgrid_dict = dict()
        if rows_microgrids is not None and len(rows_microgrids) > 0:
            for row in rows_microgrids:
                microgrid_dict[row[0]] = {"id": row[0],
                                          "name": row[1],
                                          "uuid": row[2]}
        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        query = (" SELECT id, name, uuid, microgrid_id, power_point_id, meter_id, rated_power "
                 " FROM tbl_microgrids_photovoltaics "
                 " WHERE id = %s ")
        cursor.execute(query, (pid,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_PHOTOVOLTAIC_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "microgrid": microgrid_dict.get(row[3], None),
                           "power_point": point_dict.get(row[4], None),
                           "meter": meter_dict.get(row[5], None),
                           "rated_power": row[6]}

        resp.text = json.dumps(meta_result)

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, pid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not pid.isdigit() or int(pid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_PHOTOVOLTAIC_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_photovoltaics "
                       " WHERE id = %s ", (pid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_PHOTOVOLTAIC_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_photovoltaics "
                       " WHERE id = %s ", (pid,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_, pid):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not pid.isdigit() or int(pid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_PHOTOVOLTAIC_ID')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_PHOTOVOLTAIC_NAME')
        name = str.strip(new_values['data']['name'])

        if 'power_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['power_point_id'], int) or \
                new_values['data']['power_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER_POINT_ID')
        power_point_id = new_values['data']['power_point_id']

        if 'meter_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['meter_id'], int) or \
                new_values['data']['meter_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_METER_ID')
        meter_id = new_values['data']['meter_id']

        if 'rated_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_power'], float) or
                     isinstance(new_values['data']['rated_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_POWER')
        rated_power = float(new_values['data']['rated_power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_photovoltaics "
                       " WHERE id = %s ", (pid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_PHOTOVOLTAIC_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_photovoltaics "
                       " WHERE microgrid_id = %s AND name = %s AND id != %s ",
                       (id_, name, pid))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_PHOTOVOLTAIC_NAME_IS_ALREADY_IN_USE')

        cursor.execute(" SELECT name "
                       " FROM tbl_points "
                       " WHERE id = %s ",
                       (power_point_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.POWER_POINT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_meters "
                       " WHERE id = %s ",
                       (meter_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.METER_NOT_FOUND')

        update_row = (" UPDATE tbl_microgrids_photovoltaics "
                      " SET name = %s, microgrid_id = %s, power_point_id = %s, meter_id = %s, rated_power = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (name,
                                    id_,
                                    power_point_id,
                                    meter_id,
                                    rated_power,
                                    pid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridPowerconversionsystemCollection:
    def __init__(self):
        """Initializes MicrogridPowerconversionsystemCollection"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}
        # query command dict
        query = (" SELECT id, name "
                 " FROM tbl_commands ")
        cursor.execute(query)
        rows_commands = cursor.fetchall()

        command_dict = dict()
        if rows_commands is not None and len(rows_commands) > 0:
            for row in rows_commands:
                command_dict[row[0]] = {"id": row[0],
                                        "name": row[1]}

        query = (" SELECT id, name, uuid, run_state_point_id, rated_output_power, "
                 "        today_charge_energy_point_id, today_discharge_energy_point_id, "
                 "        total_charge_energy_point_id, total_discharge_energy_point_id "
                 " FROM tbl_microgrids_power_conversion_systems "
                 " WHERE microgrid_id = %s "
                 " ORDER BY name ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0],
                               "name": row[1],
                               "uuid": row[2],
                               "run_state_point": point_dict.get(row[3]),
                               "rated_output_power": row[4],
                               "today_charge_energy_point": point_dict.get(row[5]),
                               "today_discharge_energy_point": point_dict.get(row[6]),
                               "total_charge_energy_point": point_dict.get(row[7]),
                               "total_discharge_energy_point": point_dict.get(row[8])}
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_POWER_CONVERSION_SYSTEM_NAME')
        name = str.strip(new_values['data']['name'])

        if 'run_state_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['run_state_point_id'], int) or \
                new_values['data']['run_state_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RUN_STATE_POINT_ID')
        run_state_point_id = new_values['data']['run_state_point_id']

        if 'rated_output_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_output_power'], float) or
                     isinstance(new_values['data']['rated_output_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_OUTPUT_POWER')
        rated_output_power = float(new_values['data']['rated_output_power'])

        if 'today_charge_energy_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['today_charge_energy_point_id'], int) or \
                new_values['data']['today_charge_energy_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_TODAY_CHARGE_ENERGY_POINT_ID')
        today_charge_energy_point_id = new_values['data']['today_charge_energy_point_id']

        if 'today_discharge_energy_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['today_discharge_energy_point_id'], int) or \
                new_values['data']['today_discharge_energy_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_TODAY_DISCHARGE_ENERGY_POINT_ID')
        today_discharge_energy_point_id = new_values['data']['today_discharge_energy_point_id']

        if 'total_charge_energy_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['total_charge_energy_point_id'], int) or \
                new_values['data']['total_charge_energy_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_TOTAL_CHARGE_POINT_ID')
        total_charge_energy_point_id = new_values['data']['total_charge_energy_point_id']

        if 'total_discharge_energy_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['total_discharge_energy_point_id'], int) or \
                new_values['data']['total_discharge_energy_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_TOTAL_DISCHARGE_POINT_ID')
        total_discharge_energy_point_id = new_values['data']['total_discharge_energy_point_id']

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ",
                       (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_power_conversion_systems "
                       " WHERE microgrid_id = %s AND name = %s ",
                       (id_, name,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_POWER_CONVERSION_SYSTEM_NAME_IS_ALREADY_IN_USE')

        add_values = (" INSERT INTO tbl_microgrids_power_conversion_systems "
                      "     (name, uuid, microgrid_id, run_state_point_id, rated_output_power, "
                      "      today_charge_energy_point_id, today_discharge_energy_point_id, "
                      "      total_charge_energy_point_id, total_discharge_energy_point_id) "
                      " VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    id_,
                                    run_state_point_id,
                                    rated_output_power,
                                    today_charge_energy_point_id,
                                    today_discharge_energy_point_id,
                                    total_charge_energy_point_id,
                                    total_discharge_energy_point_id
                                    ))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgridpowerconversionsystems/' + str(new_id)


class MicrogridPowerconversionsystemItem:
    def __init__(self):
        """Initializes MicrogridPowerconversionsystemItem"""
        pass

    @staticmethod
    def on_options(req, resp, id_, pid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_, pid):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not pid.isdigit() or int(pid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_POWER_CONVERSION_SYSTEM_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        # query microgrid dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_microgrids ")
        cursor.execute(query)
        rows_microgrids = cursor.fetchall()

        microgrid_dict = dict()
        if rows_microgrids is not None and len(rows_microgrids) > 0:
            for row in rows_microgrids:
                microgrid_dict[row[0]] = {"id": row[0],
                                          "name": row[1],
                                          "uuid": row[2]}
        # query meter dict
        query = (" SELECT id, name, uuid "
                 " FROM tbl_meters ")
        cursor.execute(query)
        rows_meters = cursor.fetchall()

        meter_dict = dict()
        if rows_meters is not None and len(rows_meters) > 0:
            for row in rows_meters:
                meter_dict[row[0]] = {"id": row[0],
                                      "name": row[1],
                                      "uuid": row[2]}
        # query point dict
        query = (" SELECT id, name "
                 " FROM tbl_points ")
        cursor.execute(query)
        rows_points = cursor.fetchall()

        point_dict = dict()
        if rows_points is not None and len(rows_points) > 0:
            for row in rows_points:
                point_dict[row[0]] = {"id": row[0],
                                      "name": row[1]}

        # query command dict
        query = (" SELECT id, name "
                 " FROM tbl_commands ")
        cursor.execute(query)
        rows_commands = cursor.fetchall()

        command_dict = dict()
        if rows_commands is not None and len(rows_commands) > 0:
            for row in rows_commands:
                command_dict[row[0]] = {"id": row[0],
                                        "name": row[1]}

        query = (" SELECT id, name, uuid, microgrid_id, run_state_point_id, rated_output_power, "
                 "        today_charge_energy_point_id, today_discharge_energy_point_id, "
                 "        total_charge_energy_point_id, total_discharge_energy_point_id "
                 " FROM tbl_microgrids_power_conversion_systems "
                 " WHERE id = %s ")
        cursor.execute(query, (pid,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_POWER_CONVERSION_SYSTEM_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "microgrid": microgrid_dict.get(row[3]),
                           "run_state_point": point_dict.get(row[4]),
                           "rated_output_power": row[5],
                           "today_charge_energy_point": point_dict.get(row[6]),
                           "today_discharge_energy_point": point_dict.get(row[7]),
                           "total_charge_energy_point": point_dict.get(row[8]),
                           "total_discharge_energy_point": point_dict.get(row[9])}

        resp.text = json.dumps(meta_result)

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, pid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not pid.isdigit() or int(pid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_POWER_CONVERSION_SYSTEM_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_power_conversion_systems "
                       " WHERE id = %s ", (pid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_POWER_CONVERSION_SYSTEM_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_power_conversion_systems "
                       " WHERE id = %s ", (pid,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_, pid):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not pid.isdigit() or int(pid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_POWER_CONVERSION_SYSTEM_ID')

        new_values = json.loads(raw_json)

        if 'name' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['name'], str) or \
                len(str.strip(new_values['data']['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_POWER_CONVERSION_SYSTEM_NAME')
        name = str.strip(new_values['data']['name'])

        if 'run_state_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['run_state_point_id'], int) or \
                new_values['data']['run_state_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RUN_STATE_POINT_ID')
        run_state_point_id = new_values['data']['run_state_point_id']

        if 'rated_output_power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['rated_output_power'], float) or
                     isinstance(new_values['data']['rated_output_power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_OUTPUT_POWER')
        rated_output_power = float(new_values['data']['rated_output_power'])

        if 'today_charge_energy_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['today_charge_energy_point_id'], int) or \
                new_values['data']['today_charge_energy_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_TODAY_CHARGE_ENERGY_POINT_ID')
        today_charge_energy_point_id = new_values['data']['today_charge_energy_point_id']

        if 'today_discharge_energy_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['today_discharge_energy_point_id'], int) or \
                new_values['data']['today_discharge_energy_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_TODAY_DISCHARGE_ENERGY_POINT_ID')
        today_discharge_energy_point_id = new_values['data']['today_discharge_energy_point_id']

        if 'total_charge_energy_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['total_charge_energy_point_id'], int) or \
                new_values['data']['total_charge_energy_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_TOTAL_CHARGE_POINT_ID')
        total_charge_energy_point_id = new_values['data']['total_charge_energy_point_id']

        if 'total_discharge_energy_point_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['total_discharge_energy_point_id'], int) or \
                new_values['data']['total_discharge_energy_point_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_TOTAL_DISCHARGE_POINT_ID')
        total_discharge_energy_point_id = new_values['data']['total_discharge_energy_point_id']

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_power_conversion_systems "
                       " WHERE id = %s ", (pid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_POWER_CONVERSION_SYSTEM_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids_power_conversion_systems "
                       " WHERE microgrid_id = %s AND name = %s AND id != %s ",
                       (id_, name, pid))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.MICROGRID_POWER_CONVERSION_SYSTEM_NAME_IS_ALREADY_IN_USE')

        update_row = (" UPDATE tbl_microgrids_power_conversion_systems "
                      " SET name = %s, microgrid_id = %s, run_state_point_id = %s, rated_output_power = %s, "
                      "     today_charge_energy_point_id = %s, today_discharge_energy_point_id = %s, "
                      "     total_charge_energy_point_id = %s, total_discharge_energy_point_id = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (name,
                                    id_,
                                    run_state_point_id,
                                    rated_output_power,
                                    today_charge_energy_point_id,
                                    today_discharge_energy_point_id,
                                    total_charge_energy_point_id,
                                    total_discharge_energy_point_id,
                                    pid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridScheduleCollection:

    def __init__(self):
        """Initializes Class"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        query = (" SELECT id, start_time_of_day, end_time_of_day, peak_type, power "
                 " FROM tbl_microgrids_schedules "
                 " WHERE microgrid_id = %s "
                 " ORDER BY start_time_of_day ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0],
                               "start_time_of_day": str(row[1]),
                               "end_time_of_day": str(row[2]),
                               "peak_type": row[3],
                               "power": row[4],
                               }
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        new_values = json.loads(raw_json)

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ",
                       (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        add_schedule = (" INSERT INTO tbl_microgrids_schedules "
                        "     (microgrid_id, start_time_of_day, end_time_of_day, peak_type, power) "
                        " VALUES (%s, %s, %s, %s, %s) ")
        cursor.execute(add_schedule, (id_,
                                      new_values['data']['start_time_of_day'],
                                      new_values['data']['end_time_of_day'],
                                      new_values['data']['peak_type'],
                                      new_values['data']['power']))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()
        resp.status = falcon.HTTP_201
        resp.location = '/energystoragecontainerschedules/' + str(new_id)


class MicrogridScheduleItem:

    def __init__(self):
        """Initializes Class"""
        pass

    @staticmethod
    def on_options(req, resp, id_, sid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_, sid):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not sid.isdigit() or int(sid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_SCHEDULE_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        query = (" SELECT id, name, uuid "
                 " FROM tbl_microgrids ")
        cursor.execute(query)
        rows_energystoragecontainers = cursor.fetchall()

        microgrid_dict = dict()
        if rows_energystoragecontainers is not None and len(rows_energystoragecontainers) > 0:
            for row in rows_energystoragecontainers:
                microgrid_dict[row[0]] = {"id": row[0],
                                          "name": row[1],
                                          "uuid": row[2]}

        query = (" SELECT id, start_time_of_day, end_time_of_day, peak_type, power "
                 " FROM tbl_microgrids_schedules "
                 " WHERE id = %s ")
        cursor.execute(query, (sid,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_SCHEDULE_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "start_time_of_day": str(row[1]),
                           "end_time_of_day": str(row[2]),
                           "peak_type": row[3],
                           "power": row[4]}

        resp.text = json.dumps(meta_result)

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, sid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not sid.isdigit() or int(sid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_SCHEDULE_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT id "
                       " FROM tbl_microgrids_schedules "
                       " WHERE id = %s ", (sid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_SCHEDULE_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_schedules "
                       " WHERE id = %s ", (sid,))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

    @staticmethod
    @user_logger
    def on_put(req, resp, id_, sid):
        """Handles PUT requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')
        if not sid.isdigit() or int(sid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_SCHEDULE_ID')

        new_values = json.loads(raw_json)

        if 'start_time_of_day' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['start_time_of_day'], str) or \
                len(str.strip(new_values['data']['start_time_of_day'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_START_TIME_OF_DAY')
        start_time_of_day = str.strip(new_values['data']['start_time_of_day'])

        if 'end_time_of_day' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['end_time_of_day'], str) or \
                len(str.strip(new_values['data']['end_time_of_day'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_END_TIME_OF_DAY')
        end_time_of_day = str.strip(new_values['data']['end_time_of_day'])

        if 'peak_type' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['peak_type'], str) or \
                len(str.strip(new_values['data']['peak_type'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_PEAK_TYPE')
        peak_type = str.strip(new_values['data']['peak_type'])

        if 'power' not in new_values['data'].keys() or \
                not (isinstance(new_values['data']['power'], float) or
                     isinstance(new_values['data']['power'], int)):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POWER')
        power = float(new_values['data']['power'])

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT id "
                       " FROM tbl_microgrids_schedules "
                       " WHERE id = %s ", (sid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_SCHEDULE_NOT_FOUND')

        update_row = (" UPDATE tbl_microgrids_schedules "
                      " SET start_time_of_day = %s, end_time_of_day = %s, peak_type = %s, power = %s "
                      " WHERE id = %s ")
        cursor.execute(update_row, (start_time_of_day,
                                    end_time_of_day,
                                    peak_type,
                                    power,
                                    sid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_200


class MicrogridSensorCollection:

    def __init__(self):
        """Initializes Class"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        query = (" SELECT s.id, s.name, s.uuid "
                 " FROM tbl_microgrids m, tbl_microgrids_sensors ms, tbl_sensors s "
                 " WHERE ms.microgrid_id = m.id AND s.id = ms.sensor_id AND m.id = %s "
                 " ORDER BY s.id ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0], "name": row[1], "uuid": row[2]}
                result.append(meta_result)

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')

        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        new_values = json.loads(raw_json)

        if 'sensor_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['sensor_id'], int) or \
                new_values['data']['sensor_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SENSOR_ID')
        sensor_id = new_values['data']['sensor_id']

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " from tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_sensors "
                       " WHERE id = %s ", (sensor_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.SENSOR_NOT_FOUND')

        query = (" SELECT id " 
                 " FROM tbl_microgrids_sensors "
                 " WHERE microgrid_id = %s AND sensor_id = %s")
        cursor.execute(query, (id_, sensor_id,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.ERROR',
                                   description='API.MICROGRID_SENSOR_RELATION_EXISTS')

        add_row = (" INSERT INTO tbl_microgrids_sensors (microgrid_id, sensor_id) "
                   " VALUES (%s, %s) ")
        cursor.execute(add_row, (id_, sensor_id,))
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(id_) + '/sensors/' + str(sensor_id)


class MicrogridSensorItem:

    def __init__(self):
        """Initializes Class"""
        pass

    @staticmethod
    def on_options(req, resp, id_, sid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, sid):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        if not sid.isdigit() or int(sid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SENSOR_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_sensors "
                       " WHERE id = %s ", (sid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.SENSOR_NOT_FOUND')

        cursor.execute(" SELECT id "
                       " FROM tbl_microgrids_sensors "
                       " WHERE microgrid_id = %s AND sensor_id = %s ", (id_, sid))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_SENSOR_RELATION_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_sensors "
                       " WHERE microgrid_id = %s AND sensor_id = %s ", (id_, sid))
        cnx.commit()

        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204


class MicrogridUserCollection:

    def __init__(self):
        """Initializes Class"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()
        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        query = (" SELECT u.id, u.name, u.uuid "
                 " FROM tbl_microgrids m, tbl_microgrids_users mu, "
                 + config.myems_user_db['database'] + ".tbl_users u "
                 " WHERE mu.microgrid_id = m.id AND u.id = mu.user_id AND m.id = %s "
                 " ORDER BY u.id ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()
        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0], "name": row[1], "uuid": row[2]}
                result.append(meta_result)

        cursor.close()
        cnx.close()
        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')

        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        new_values = json.loads(raw_json)
        if 'user_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['user_id'], int) or \
                new_values['data']['user_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_USER_ID')
        user_id = new_values['data']['user_id']
        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()
        cursor.execute(" SELECT name "
                       " from tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cnx_user = mysql.connector.connect(**config.myems_user_db)
        cursor_user = cnx_user.cursor()
        cursor_user.execute(" SELECT name"
                            " FROM tbl_users "
                            " WHERE id = %s ", (user_id,))
        if cursor_user.fetchone() is None:
            cursor_user.close()
            cnx_user.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.USER_NOT_FOUND')
        query = (" SELECT id "
                 " FROM tbl_microgrids_users "
                 " WHERE microgrid_id = %s AND user_id = %s")
        cursor.execute(query, (id_, user_id,))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.ERROR',
                                   description='API.MICROGRID_USER_RELATION_EXISTS')
        add_row = (" INSERT INTO tbl_microgrids_users (microgrid_id, user_id) "
                   " VALUES (%s, %s) ")
        cursor.execute(add_row, (id_, user_id,))
        cnx.commit()
        cursor.close()
        cnx.close()
        cursor_user.close()
        cnx_user.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(id_) + '/users/' + str(user_id)


class MicrogridUserItem:

    def __init__(self):
        """Initializes Class"""
        pass

    @staticmethod
    def on_options(req, resp, id_, uid):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, uid):
        # todo Verify if the user is bound when deleting it
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        if not uid.isdigit() or int(uid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_USER_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()
        cursor.execute(" SELECT name "
                       " FROM tbl_microgrids "
                       " WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cnx_user = mysql.connector.connect(**config.myems_user_db)
        cursor_user = cnx_user.cursor()
        cursor_user.execute(" SELECT name FROM tbl_users WHERE id = %s ", (uid,))
        if cursor_user.fetchone() is None:
            cursor_user.close()
            cnx_user.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.USER_NOT_FOUND')

        cursor.execute(" SELECT id "
                       " FROM tbl_microgrids_users "
                       " WHERE microgrid_id = %s AND user_id = %s ", (id_, uid))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_USER_RELATION_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_users WHERE microgrid_id = %s AND user_id = %s ", (id_, uid))
        cnx.commit()

        cursor.close()
        cnx.close()
        cursor_user.close()
        cnx_user.close()

        resp.status = falcon.HTTP_204


class MicrogridExport:
    def __init__(self):
        """"Initializes MicrogridExport"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    def on_get(req, resp, id_):
        access_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        query = (" SELECT id, name, uuid "
                 " FROM tbl_contacts ")
        cursor.execute(query)
        rows_contacts = cursor.fetchall()

        contact_dict = dict()
        if rows_contacts is not None and len(rows_contacts) > 0:
            for row in rows_contacts:
                contact_dict[row[0]] = {"id": row[0],
                                        "name": row[1],
                                        "uuid": row[2]}

        query = (" SELECT id, name, uuid "
                 " FROM tbl_cost_centers ")
        cursor.execute(query)
        rows_cost_centers = cursor.fetchall()

        cost_center_dict = dict()
        if rows_cost_centers is not None and len(rows_cost_centers) > 0:
            for row in rows_cost_centers:
                cost_center_dict[row[0]] = {"id": row[0],
                                            "name": row[1],
                                            "uuid": row[2]}

        query = (" SELECT id, name, uuid, "
                 "        address, postal_code, latitude, longitude, rated_capacity, rated_power, "
                 "        contact_id, cost_center_id, serial_number, svg_id, is_cost_data_displayed, phase_of_lifecycle, description "
                 " FROM tbl_microgrids "
                 " WHERE id = %s ")
        cursor.execute(query, (id_,))
        row = cursor.fetchone()
        cursor.close()
        cnx.close()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "address": row[3],
                           "postal_code": row[4],
                           "latitude": row[5],
                           "longitude": row[6],
                           "rated_capacity": row[7],
                           "rated_power": row[8],
                           "contact": contact_dict.get(row[9], None),
                           "cost_center": cost_center_dict.get(row[10], None),
                           "serial_number": row[11],
                           "svg_id": row[12],
                           "is_cost_data_displayed": bool(row[13]),
                           "phase_of_lifecycle": row[14],
                           "description": row[15]}

        resp.text = json.dumps(meta_result)


class MicrogridImport:
    def __init__(self):
        """"Initializes MicrogridImport"""
        pass

    @staticmethod
    def on_options(req, resp):
        _ = req
        resp.status = falcon.HTTP_200

    @staticmethod
    @user_logger
    def on_post(req, resp):
        """Handles POST requests"""
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            print(str(ex))
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')

        new_values = json.loads(raw_json)

        if 'name' not in new_values.keys() or \
                not isinstance(new_values['name'], str) or \
                len(str.strip(new_values['name'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_NAME')
        name = str.strip(new_values['name'])

        if 'address' not in new_values.keys() or \
                not isinstance(new_values['address'], str) or \
                len(str.strip(new_values['address'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_ADDRESS_VALUE')
        address = str.strip(new_values['address'])

        if 'postal_code' not in new_values.keys() or \
                not isinstance(new_values['postal_code'], str) or \
                len(str.strip(new_values['postal_code'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_POSTAL_CODE_VALUE')
        postal_code = str.strip(new_values['postal_code'])

        if 'latitude' not in new_values.keys() or \
                not (isinstance(new_values['latitude'], float) or
                     isinstance(new_values['latitude'], int)) or \
                new_values['latitude'] < -90.0 or \
                new_values['latitude'] > 90.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_LATITUDE_VALUE')
        latitude = new_values['latitude']

        if 'longitude' not in new_values.keys() or \
                not (isinstance(new_values['longitude'], float) or
                     isinstance(new_values['longitude'], int)) or \
                new_values['longitude'] < -180.0 or \
                new_values['longitude'] > 180.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_LONGITUDE_VALUE')
        longitude = new_values['longitude']

        if 'rated_capacity' not in new_values.keys() or \
                not (isinstance(new_values['rated_capacity'], float) or
                     isinstance(new_values['rated_capacity'], int)) or \
                new_values['rated_capacity'] <= 0.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_CAPACITY')
        rated_capacity = new_values['rated_capacity']

        if 'rated_power' not in new_values.keys() or \
                not (isinstance(new_values['rated_power'], float) or
                     isinstance(new_values['rated_power'], int)) or \
                new_values['rated_power'] <= 0.0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_RATED_POWER')
        rated_power = new_values['rated_power']

        if 'id' not in new_values['contact'].keys() or \
                not isinstance(new_values['contact']['id'], int) or \
                new_values['contact']['id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_CONTACT_ID')
        contact_id = new_values['contact']['id']

        if 'id' not in new_values['cost_center'].keys() or \
                not isinstance(new_values['cost_center']['id'], int) or \
                new_values['cost_center']['id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_COST_CENTER_ID')
        cost_center_id = new_values['cost_center']['id']

        if 'serial_number' not in new_values.keys() or \
                not isinstance(new_values['serial_number'], str) or \
                len(str.strip(new_values['serial_number'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SERIAL_NUMBER')
        serial_number = str.strip(new_values['serial_number'])

        if 'svg_id' not in new_values.keys() or \
                not isinstance(new_values['svg_id'], int) or \
                new_values['svg_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_SVG_ID')
        svg_id = new_values['svg_id']

        if 'is_cost_data_displayed' not in new_values.keys() or \
                not isinstance(new_values['is_cost_data_displayed'], bool):
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_IS_COST_DATA_DISPLAYED')
        is_cost_data_displayed = new_values['is_cost_data_displayed']

        if 'phase_of_lifecycle' not in new_values.keys() or \
                not isinstance(new_values['phase_of_lifecycle'], str) or \
                len(str.strip(new_values['phase_of_lifecycle'])) == 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_PHASE_OF_LIFECYCLE')
        phase_of_lifecycle = str.strip(new_values['phase_of_lifecycle'])

        if 'description' in new_values.keys() and \
                new_values['description'] is not None and \
                len(str(new_values['description'])) > 0:
            description = str.strip(new_values['description'])
        else:
            description = None

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        original_name = name
        while True:
            cursor.execute(" SELECT name "
                           " FROM tbl_microgrids "
                           " WHERE name = %s ", (name,))
            if cursor.fetchone() is None:
                break
            timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
            if config.utc_offset[0] == '-':
                timezone_offset = -timezone_offset
            name = (str.strip(original_name) +
                    (datetime.utcnow() + timedelta(minutes=timezone_offset)).isoformat(sep='-', timespec='seconds'))

        cursor.execute(" SELECT name "
                       " FROM tbl_contacts "
                       " WHERE id = %s ",
                       (new_values['contact']['id'],))
        row = cursor.fetchone()
        if row is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.CONTACT_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_cost_centers "
                       " WHERE id = %s ",
                       (new_values['cost_center']['id'],))
        row = cursor.fetchone()
        if row is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.COST_CENTER_NOT_FOUND')

        cursor.execute(" SELECT name "
                       " FROM tbl_svgs "
                       " WHERE id = %s ",
                       (svg_id,))
        row = cursor.fetchone()
        if row is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.SVG_NOT_FOUND')

        add_values = (" INSERT INTO tbl_microgrids "
                      "    (name, uuid, address, postal_code, latitude, longitude, rated_capacity, rated_power, "
                      "     contact_id, cost_center_id, serial_number, svg_id, is_cost_data_displayed, phase_of_lifecycle, description) "
                      " VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s) ")
        cursor.execute(add_values, (name,
                                    str(uuid.uuid4()),
                                    address,
                                    postal_code,
                                    latitude,
                                    longitude,
                                    rated_capacity,
                                    rated_power,
                                    contact_id,
                                    cost_center_id,
                                    serial_number,
                                    svg_id,
                                    is_cost_data_displayed,
                                    phase_of_lifecycle,
                                    description))
        new_id = cursor.lastrowid
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(new_id)


class MicrogridClone:
    def __init__(self):
        """"Initializes MicrogridClone"""
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        resp.status = falcon.HTTP_200
        _ = id_

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        admin_control(req)
        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        query = (" SELECT id, name, uuid "
                 " FROM tbl_contacts ")
        cursor.execute(query)
        rows_contacts = cursor.fetchall()

        contact_dict = dict()
        if rows_contacts is not None and len(rows_contacts) > 0:
            for row in rows_contacts:
                contact_dict[row[0]] = {"id": row[0],
                                        "name": row[1],
                                        "uuid": row[2]}

        query = (" SELECT id, name, uuid "
                 " FROM tbl_cost_centers ")
        cursor.execute(query)
        rows_cost_centers = cursor.fetchall()

        cost_center_dict = dict()
        if rows_cost_centers is not None and len(rows_cost_centers) > 0:
            for row in rows_cost_centers:
                cost_center_dict[row[0]] = {"id": row[0],
                                            "name": row[1],
                                            "uuid": row[2]}

        query = (" SELECT id, name, uuid, "
                    "        address, postal_code, latitude, longitude, rated_capacity, rated_power, "
                    "        contact_id, cost_center_id, serial_number, svg_id, is_cost_data_displayed, phase_of_lifecycle, description "
                    " FROM tbl_microgrids "
                    " WHERE id = %s ")
        cursor.execute(query, (id_,))
        row = cursor.fetchone()

        if row is None:
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')
        else:
            meta_result = {"id": row[0],
                           "name": row[1],
                           "uuid": row[2],
                           "address": row[3],
                           "postal_code": row[4],
                           "latitude": row[5],
                           "longitude": row[6],
                           "rated_capacity": row[7],
                           "rated_power": row[8],
                           "contact": contact_dict.get(row[9], None),
                           "cost_center": cost_center_dict.get(row[10], None),
                           "serial_number": row[11],
                           "svg_id": row[12],
                           "is_cost_data_displayed": row[13],
                           "phase_of_lifecycle": row[14],
                           "description": row[15]}
            timezone_offset = int(config.utc_offset[1:3]) * 60 + int(config.utc_offset[4:6])
            if config.utc_offset[0] == '-':
                timezone_offset = -timezone_offset
            new_name = (str.strip(meta_result['name']) +
                        (datetime.utcnow() + timedelta(minutes=timezone_offset)).isoformat(sep='-', timespec='seconds'))
            add_values = (" INSERT INTO tbl_microgrids "
                          "    (name, uuid, address, postal_code, latitude, longitude, rated_capacity, rated_power, "
                          "     contact_id, cost_center_id, serial_number, svg_id, is_cost_data_displayed, phase_of_lifecycle, description) "
                          " VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s) ")
            cursor.execute(add_values, (new_name,
                                        str(uuid.uuid4()),
                                        meta_result['address'],
                                        meta_result['postal_code'],
                                        meta_result['latitude'],
                                        meta_result['longitude'],
                                        meta_result['rated_capacity'],
                                        meta_result['rated_power'], 
                                        meta_result['contact']['id'],
                                        meta_result['cost_center']['id'],
                                        meta_result['serial_number'],
                                        meta_result['svg_id'],
                                        meta_result['is_cost_data_displayed'],
                                        meta_result['phase_of_lifecycle'],
                                        meta_result['description']))
            new_id = cursor.lastrowid
            cnx.commit()
            cursor.close()
            cnx.close()

            resp.status = falcon.HTTP_201
            resp.location = '/microgrids/' + str(new_id)
            
class MicrogridDataSourceCollection:

    def __init__(self):
        pass

    @staticmethod
    def on_options(req, resp, id_):
        _ = req
        _ = id_
        resp.status = falcon.HTTP_200

    @staticmethod
    def on_get(req, resp, id_):
        if 'API-KEY' not in req.headers or \
                not isinstance(req.headers['API-KEY'], str) or \
                len(str.strip(req.headers['API-KEY'])) == 0:
            access_control(req)
        else:
            api_key_control(req)


        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name FROM tbl_microgrids WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        query = (" SELECT ds.id, ds.name, ds.uuid "
                 " FROM tbl_microgrids mg, tbl_microgrids_data_sources mgds, tbl_data_sources ds "
                 " WHERE mgds.microgrid_id = mg.id AND ds.id = mgds.data_source_id AND mg.id = %s "
                 " ORDER BY ds.id ")
        cursor.execute(query, (id_,))
        rows = cursor.fetchall()

        result = list()
        if rows is not None and len(rows) > 0:
            for row in rows:
                meta_result = {"id": row[0], "name": row[1], "uuid": row[2]}
                result.append(meta_result)

        cursor.close()
        cnx.close()

        resp.text = json.dumps(result)

    @staticmethod
    @user_logger
    def on_post(req, resp, id_):
        admin_control(req)
        try:
            raw_json = req.stream.read().decode('utf-8')
        except Exception as ex:
            raise falcon.HTTPError(status=falcon.HTTP_400,
                                   title='API.BAD_REQUEST',
                                   description='API.FAILED_TO_READ_REQUEST_STREAM')

        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        new_values = json.loads(raw_json)

        if 'data_source_id' not in new_values['data'].keys() or \
                not isinstance(new_values['data']['data_source_id'], int) or \
                new_values['data']['data_source_id'] <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_DATA_SOURCE_ID')

        data_source_id = new_values['data']['data_source_id']

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name FROM tbl_microgrids WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name FROM tbl_data_sources WHERE id = %s ", (data_source_id,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.DATA_SOURCE_NOT_FOUND')

        cursor.execute(" SELECT id "
                       " FROM tbl_microgrids_data_sources "
                       " WHERE microgrid_id = %s AND data_source_id = %s", (id_, data_source_id))
        if cursor.fetchone() is not None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.ERROR',
                                   description='API.MICROGRID_DATA_SOURCE_RELATION_EXISTS')

        cursor.execute(" INSERT INTO tbl_microgrids_data_sources (microgrid_id, data_source_id) "
                       " VALUES (%s, %s) ", (id_, data_source_id))
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_201
        resp.location = '/microgrids/' + str(id_) + '/datasources/' + str(data_source_id)

class MicrogridDataSourceItem:

    def __init__(self):
        pass

    @staticmethod
    def on_options(req, resp, id_, dsid):
        _ = req
        _ = id_
        _ = dsid
        resp.status = falcon.HTTP_200

    @staticmethod
    @user_logger
    def on_delete(req, resp, id_, dsid):
        admin_control(req)

        if not id_.isdigit() or int(id_) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_MICROGRID_ID')

        if not dsid.isdigit() or int(dsid) <= 0:
            raise falcon.HTTPError(status=falcon.HTTP_400, title='API.BAD_REQUEST',
                                   description='API.INVALID_DATA_SOURCE_ID')

        cnx = mysql.connector.connect(**config.myems_system_db)
        cursor = cnx.cursor()

        cursor.execute(" SELECT name FROM tbl_microgrids WHERE id = %s ", (id_,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_NOT_FOUND')

        cursor.execute(" SELECT name FROM tbl_data_sources WHERE id = %s ", (dsid,))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.DATA_SOURCE_NOT_FOUND')

        cursor.execute(" SELECT id "
                       " FROM tbl_microgrids_data_sources "
                       " WHERE microgrid_id = %s AND data_source_id = %s ", (id_, dsid))
        if cursor.fetchone() is None:
            cursor.close()
            cnx.close()
            raise falcon.HTTPError(status=falcon.HTTP_404, title='API.NOT_FOUND',
                                   description='API.MICROGRID_DATA_SOURCE_RELATION_NOT_FOUND')

        cursor.execute(" DELETE FROM tbl_microgrids_data_sources "
                       " WHERE microgrid_id = %s AND data_source_id = %s ", (id_, dsid))
        cnx.commit()
        cursor.close()
        cnx.close()

        resp.status = falcon.HTTP_204

MyEMS / myems

core.microgrid.MicrogridGridCollection.on_post() F last analyzed 2025-08-16 07:04 UTC

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core.microgrid.MicrogridGridCollection.on_post() F
last analyzed 2025-08-16 07:04 UTC
