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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 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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######################################################################################################################## |
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# PROCEDURES |
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# Step 1: Validate the report data |
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# Step 2: Generate excel file from the report data |
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# Step 3: Encode the excel file to Base64 |
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######################################################################################################################## |
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def export(result, space_name, reporting_start_datetime_local, reporting_end_datetime_local, 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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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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View Code Duplication |
def generate_excel(report, space_name, reporting_start_datetime_local, 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 = "VirtualMeterBatch" |
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# Col width |
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for i in range(ord('A'), ord('L')): |
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ws.column_dimensions[chr(i)].width = 20.0 |
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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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# Title |
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title_font = Font(size=12, bold=True) |
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ws['A6'].font = title_font |
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ws['A6'] = _('ID') |
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ws['B6'].font = title_font |
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ws['B6'] = _('Name') |
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ws['C6'].font = title_font |
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ws['C6'] = _('Space') |
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ca_len = len(report['energycategories']) |
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for i in range(0, ca_len): |
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col = chr(ord('D') + i) |
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ws[col + '6'].font = title_font |
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ws[col + '6'] = report['energycategories'][i]['name'] + " (" + \ |
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report['energycategories'][i]['unit_of_measure'] + ")" |
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current_row_number = 7 |
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for i in range(0, len(report['virtual_meters'])): |
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ws['A' + str(current_row_number)] = str(report['virtual_meters'][i]['id']) |
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ws['B' + str(current_row_number)] = report['virtual_meters'][i]['virtual_meter_name'] |
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ws['C' + str(current_row_number)] = report['virtual_meters'][i]['space_name'] |
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ca_len = len(report['virtual_meters'][i]['values']) |
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for j in range(0, ca_len): |
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col = chr(ord('D') + j) |
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ws[col + str(current_row_number)] = report['virtual_meters'][i]['values'][j] |
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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
17623517467
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