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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 PatternFill, Border, Side, Alignment, Font |
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from core.utilities import round2 |
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from decimal import Decimal |
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import plotly.graph_objects as go |
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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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def export(result, 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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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, 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 = "EnergyFlowDiagram" |
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# Energy Flow Diagram Data Structure |
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nodes = list() |
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target = list() |
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values = list() |
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node_value = list() |
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source = list() |
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labels = list() |
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color = ['rgba(25,202,173, 0.8)', 'rgba(140,199,181, 0.8)', 'rgba(160,238,225, 0.8)', 'rgba(190,231,233, 0.8)', |
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'rgba(190,237,199,0.8)', 'rgba(109,91,7,0.8)', 'rgba(27,167,4,0.8)', 'rgba(108,234,12,0.8)', |
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'rgba(202,217,14,0.8)', 'rgba(70,6,12,0.8)', 'rgba(246,10,15,0.8)', 'rgba(240,5,15,0.8)'] |
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node_color_list = list() |
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for key, node in enumerate(report['nodes']): |
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nodes.append(node['name']) |
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node_value.append(Decimal(0.0)) |
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node_color_list.append(color[key % len(color)]) |
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for link in report['links']: |
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source.append(nodes.index(link['source'])) |
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target.append(nodes.index(link['target'])) |
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link_value = Decimal(link['value']) if link['value'] is not None else Decimal(0.0) |
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values.append(link_value) |
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node_value[nodes.index(link['source'])] = node_value[nodes.index(link['source'])] - link_value |
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node_value[nodes.index(link['target'])] = node_value[nodes.index(link['target'])] + link_value |
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for key, value in enumerate(nodes): |
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labels.append(value + ':' + str(node_value[key].copy_abs())) |
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# Row height |
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ws.row_dimensions[1].height = 102 |
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for i in range(2, 5 + 1): |
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ws.row_dimensions[i].height = 42 |
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for i in range(6, len(report['links']) + 15): |
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ws.row_dimensions[i].height = 60 |
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# Col width |
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ws.column_dimensions['A'].width = 1.5 |
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ws.column_dimensions['B'].width = 25.0 |
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for i in range(ord('C'), ord('L')): |
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ws.column_dimensions[chr(i)].width = 15.0 |
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# Font |
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name_font = Font(name='Arial', size=15, bold=True) |
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title_font = Font(name='Arial', size=15, bold=True) |
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table_fill = PatternFill(fill_type='solid', fgColor='90ee90') |
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f_border = Border(left=Side(border_style='medium'), |
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right=Side(border_style='medium'), |
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bottom=Side(border_style='medium'), |
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top=Side(border_style='medium') |
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) |
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b_border = Border( |
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bottom=Side(border_style='medium'), |
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) |
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b_c_alignment = Alignment(vertical='bottom', |
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horizontal='center', |
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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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c_c_alignment = Alignment(vertical='center', |
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horizontal='center', |
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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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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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# Img |
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img = Image("excelexporters/myems.png") |
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ws.add_image(img, 'A1') |
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# Title |
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ws['B3'].alignment = b_r_alignment |
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ws['B3'] = _('Name') + ':' |
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ws['C3'].border = b_border |
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ws['C3'].alignment = b_c_alignment |
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ws['C3'] = name |
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ws['B4'].alignment = b_r_alignment |
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ws['B4'] = _('Reporting Start Datetime') + ':' |
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ws['C4'].border = b_border |
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ws['C4'].alignment = b_c_alignment |
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ws['C4'] = reporting_start_datetime_local |
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ws['B5'].alignment = b_r_alignment |
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ws['B5'] = _('Reporting End Datetime') + ':' |
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ws['C5'].border = b_border |
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ws['C5'].alignment = b_c_alignment |
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ws['C5'] = reporting_end_datetime_local |
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# Title |
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ws['B6'].border = f_border |
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ws['B6'].font = name_font |
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ws['B6'].alignment = c_c_alignment |
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ws['B6'].fill = table_fill |
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ws['B6'] = _('Name') |
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ws['C6'].border = f_border |
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ws['C6'].alignment = c_c_alignment |
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ws['C6'].font = name_font |
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ws['C6'].fill = table_fill |
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ws['C6'] = _('Name') |
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ws['D6'].border = f_border |
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ws['D6'].alignment = c_c_alignment |
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ws['D6'].font = name_font |
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ws['D6'].fill = table_fill |
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ws['D6'] = _('Value') |
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current_row_number = 7 |
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for i in range(0, len(report['links'])): |
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ws['B' + str(current_row_number)].font = title_font |
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ws['B' + str(current_row_number)].border = f_border |
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ws['B' + str(current_row_number)].alignment = c_c_alignment |
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ws['B' + str(current_row_number)] = report['links'][i]['source'] |
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ws['C' + str(current_row_number)].font = title_font |
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ws['C' + str(current_row_number)].border = f_border |
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ws['C' + str(current_row_number)].alignment = c_c_alignment |
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ws['C' + str(current_row_number)] = report['links'][i]['target'] |
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ws['D' + str(current_row_number)].font = title_font |
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ws['D' + str(current_row_number)].border = f_border |
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ws['D' + str(current_row_number)].alignment = c_c_alignment |
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ws['D' + str(current_row_number)] = round2(report['links'][i]['value'], 2) |
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current_row_number += 1 |
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fig = go.Figure(data=[go.Sankey( |
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valueformat=".0f", |
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valuesuffix="TWh", |
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# Define nodes |
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node=dict(pad=15, thickness=15, line=dict(color="black", width=0.5), label=labels, color=node_color_list), |
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# Add links |
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link=dict(source=source, target=target, value=values) |
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)]) |
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fig.update_layout(title_text=name, font_size=10) |
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# Save image file |
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fig.write_image("sankey.png") |
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# Insert image |
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img = Image("sankey.png") |
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ws.add_image(img, 'B' + str(current_row_number)) |
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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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# Delete image file |
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os.remove("sankey.png") |
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return filename |
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MyEMS /
myems
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