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import base64 |
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from core.utilities import get_translation |
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import os |
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import uuid |
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from decimal import Decimal |
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from openpyxl import Workbook |
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from openpyxl.drawing.image import Image |
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from openpyxl.styles import Alignment, Font |
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from core.utilities import round2 |
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######################################################################################################################## |
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# PROCEDURES |
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# Step 1: Validate the report data |
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# Step 2: Generate excelexporters file |
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# Step 3: Encode the excelexporters file to Base64 |
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######################################################################################################################## |
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View Code Duplication |
def export(result, space_name, energy_category_name, reporting_start_datetime_local, reporting_end_datetime_local, |
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language): |
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#################################################################################################################### |
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# Step 1: Validate the report data |
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#################################################################################################################### |
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if result is None: |
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return None |
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#################################################################################################################### |
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# Step 2: Generate excel file from the report data |
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#################################################################################################################### |
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filename = generate_excel(result, |
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space_name, |
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energy_category_name, |
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reporting_start_datetime_local, |
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reporting_end_datetime_local, |
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language) |
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#################################################################################################################### |
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# Step 3: Encode the excel file to Base64 |
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#################################################################################################################### |
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binary_file_data = b'' |
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try: |
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with open(filename, 'rb') as binary_file: |
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binary_file_data = binary_file.read() |
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except IOError as ex: |
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print(str(ex)) |
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# Base64 encode the bytes |
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base64_encoded_data = base64.b64encode(binary_file_data) |
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# get the Base64 encoded data using human-readable characters. |
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base64_message = base64_encoded_data.decode('utf-8') |
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# delete the file from server |
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try: |
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os.remove(filename) |
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except NotImplementedError as ex: |
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print(str(ex)) |
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return base64_message |
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def generate_excel(report, space_name, energy_category_name, reporting_start_datetime_local, |
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reporting_end_datetime_local, language): |
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trans = get_translation(language) |
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trans.install() |
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_ = trans.gettext |
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wb = Workbook() |
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ws = wb.active |
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ws.title = "MeterTracking" |
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# Column width |
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for i in range(ord('A'), ord('I')): |
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ws.column_dimensions[chr(i)].width = 25.0 |
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# Head image |
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ws.row_dimensions[1].height = 105 |
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img = Image("excelexporters/myems.png") |
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ws.add_image(img, 'A1') |
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# Query Parameters |
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b_r_alignment = Alignment(vertical='bottom', |
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horizontal='right', |
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text_rotation=0, |
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wrap_text=True, |
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shrink_to_fit=False, |
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indent=0) |
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ws['A3'].alignment = b_r_alignment |
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ws['A3'] = _('Space') + ':' |
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ws['B3'] = space_name |
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ws['A4'].alignment = b_r_alignment |
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ws['A4'] = _('Start Datetime') + ':' |
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ws['B4'] = reporting_start_datetime_local |
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ws['A5'].alignment = b_r_alignment |
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ws['A5'] = _('End Datetime') + ':' |
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ws['B5'] = reporting_end_datetime_local |
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ws['A6'].alignment = b_r_alignment |
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ws['A6'] = _('Start Integrity Rate') + ':' |
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ws['B6'] = (str(round2(report['start_integrity_rate'] * Decimal(100.0), 2)) + '%') \ |
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if report['start_integrity_rate'] is not None else None |
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ws['A7'].alignment = b_r_alignment |
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ws['A7'] = _('End Integrity Rate') + ':' |
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ws['B7'] = (str(round2(report['end_integrity_rate'] * Decimal(100.0), 2)) + '%') \ |
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if report['end_integrity_rate'] is not None else None |
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ws['A8'].alignment = b_r_alignment |
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ws['A8'] = _('Full Integrity Rate') + ':' |
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ws['B8'] = (str(round2(report['full_integrity_rate'] * Decimal(100.0), 2)) + '%') \ |
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if report['full_integrity_rate'] is not None else None |
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ws['A9'].alignment = b_r_alignment |
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ws['A9'] = _('Energy Category') + ':' |
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ws['B9'] = energy_category_name if energy_category_name is not None else _('All') |
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# Title |
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title_font = Font(size=12, bold=True) |
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ws['A10'].font = title_font |
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ws['A10'] = _('ID') |
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ws['B10'].font = title_font |
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ws['B10'] = _('Name') |
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ws['C10'].font = title_font |
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ws['C10'] = _('Space') |
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ws['D10'].font = title_font |
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ws['D10'] = _('Cost Center') |
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ws['E10'].font = title_font |
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ws['E10'] = _('Energy Category') |
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ws['F10'].font = title_font |
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ws['F10'] = _('Description') |
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ws['G10'].font = title_font |
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ws['G10'] = _('Start Value') |
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ws['H10'].font = title_font |
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ws['H10'] = _('End Value') |
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ws['I10'].font = title_font |
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ws['I10'] = _('Difference Value') |
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current_row_number = 11 |
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for i in range(0, len(report['meters'])): |
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ws['A' + str(current_row_number)] = report['meters'][i]['id'] |
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ws['B' + str(current_row_number)] = report['meters'][i]['meter_name'] |
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ws['C' + str(current_row_number)] = report['meters'][i]['space_name'] |
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ws['D' + str(current_row_number)] = report['meters'][i]['cost_center_name'] |
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ws['E' + str(current_row_number)] = report['meters'][i]['energy_category_name'] |
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ws['F' + str(current_row_number)] = report['meters'][i]['description'] |
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ws['G' + str(current_row_number)] = report['meters'][i]['start_value'] |
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ws['H' + str(current_row_number)] = report['meters'][i]['end_value'] |
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ws['I' + str(current_row_number)] = report['meters'][i]['difference_value'] |
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current_row_number += 1 |
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filename = str(uuid.uuid4()) + '.xlsx' |
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wb.save(filename) |
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return filename |
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MyEMS /
myems
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