From 0d6c14b999abf4a04db4541abb5f320ef5de2014 Mon Sep 17 00:00:00 2001
From: YangZhang-GitHub <2533471770@qq.com>
Date: Wed, 3 Mar 2021 11:47:26 +0800
Subject: [PATCH 1/2] Added
 'excelexporters.combinedequipmentenergyitem.export()' method

---
 myems-api/reports/combinedequipmentenergyitem.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/myems-api/reports/combinedequipmentenergyitem.py b/myems-api/reports/combinedequipmentenergyitem.py
index bccdf7c0..5e25004a 100644
--- a/myems-api/reports/combinedequipmentenergyitem.py
+++ b/myems-api/reports/combinedequipmentenergyitem.py
@@ -5,6 +5,7 @@ import config
 from datetime import datetime, timedelta, timezone
 from core import utilities
 from decimal import Decimal
+import excelexporters.combinedequipmentenergyitem
 
 
 class Reporting:
@@ -516,4 +517,11 @@ class Reporting:
             "values": parameters_data['values']
         }
 
+        # export result to Excel file and then encode the file to base64 string
+        result['excel_bytes_base64'] = excelexporters.combinedequipmentenergyitem.export(result,
+                                                                                         combined_equipment['name'],
+                                                                                         reporting_start_datetime_local,
+                                                                                         reporting_end_datetime_local,
+                                                                                         period_type)
+
         resp.body = json.dumps(result)

From f0589cbb97c07f6028a5e30e8c4136d1a1d4d05a Mon Sep 17 00:00:00 2001
From: YangZhang-GitHub <2533471770@qq.com>
Date: Wed, 3 Mar 2021 11:48:07 +0800
Subject: [PATCH 2/2] Implemented the CombinedEquipmentEnergyItem Excel
 Exporter

---
 .../combinedequipmentenergyitem.py            | 464 ++++++++++++++++++
 1 file changed, 464 insertions(+)
 create mode 100644 myems-api/excelexporters/combinedequipmentenergyitem.py

diff --git a/myems-api/excelexporters/combinedequipmentenergyitem.py b/myems-api/excelexporters/combinedequipmentenergyitem.py
new file mode 100644
index 00000000..83d50974
--- /dev/null
+++ b/myems-api/excelexporters/combinedequipmentenergyitem.py
@@ -0,0 +1,464 @@
+import base64
+import uuid
+import os
+from openpyxl.chart import (
+    PieChart,
+    LineChart,
+    BarChart,
+    Reference,
+)
+from openpyxl.styles import PatternFill, Border, Side, Alignment, Font
+from openpyxl.drawing.image import Image
+from openpyxl import Workbook
+from openpyxl.chart.label import DataLabelList
+
+
+####################################################################################################################
+# PROCEDURES
+# Step 1: Validate the report data
+# Step 2: Generate excel file
+# Step 3: Encode the excel file bytes to Base64
+####################################################################################################################
+
+
+def export(report,
+           name,
+           reporting_start_datetime_local,
+           reporting_end_datetime_local,
+           period_type):
+    ####################################################################################################################
+    # Step 1: Validate the report data
+    ####################################################################################################################
+    if report is None:
+        return None
+    print(report)
+
+    ####################################################################################################################
+    # Step 2: Generate excel file from the report data
+    ####################################################################################################################
+    filename = generate_excel(report,
+                              name,
+                              reporting_start_datetime_local,
+                              reporting_end_datetime_local,
+                              period_type)
+    ####################################################################################################################
+    # Step 3: Encode the excel file to Base64
+    ####################################################################################################################
+    try:
+        with open(filename, 'rb') as binary_file:
+            binary_file_data = binary_file.read()
+    except IOError as ex:
+        pass
+
+    # Base64 encode the bytes
+    base64_encoded_data = base64.b64encode(binary_file_data)
+    # get the Base64 encoded data using human-readable characters.
+    base64_message = base64_encoded_data.decode('utf-8')
+    # delete the file from server
+    try:
+        os.remove(filename)
+    except NotImplementedError as ex:
+        pass
+    return base64_message
+
+
+def generate_excel(report,
+                   name,
+                   reporting_start_datetime_local,
+                   reporting_end_datetime_local,
+                   period_type):
+    wb = Workbook()
+    ws = wb.active
+
+    # Row height
+    ws.row_dimensions[1].height = 102
+    for i in range(2, 2000 + 1):
+        ws.row_dimensions[i].height = 42
+
+    # Col width
+    ws.column_dimensions['A'].width = 1.5
+
+    ws.column_dimensions['B'].width = 25.0
+
+    for i in range(ord('C'), ord('L')):
+        ws.column_dimensions[chr(i)].width = 15.0
+
+    # Font
+    name_font = Font(name='Constantia', size=15, bold=True)
+    title_font = Font(name='宋体', size=15, bold=True)
+    data_font = Font(name='Franklin Gothic Book', size=11)
+
+    table_fill = PatternFill(fill_type='solid', fgColor='1F497D')
+    f_border = Border(left=Side(border_style='medium', color='00000000'),
+                      right=Side(border_style='medium', color='00000000'),
+                      bottom=Side(border_style='medium', color='00000000'),
+                      top=Side(border_style='medium', color='00000000')
+                      )
+    b_border = Border(
+        bottom=Side(border_style='medium', color='00000000'),
+    )
+
+    b_c_alignment = Alignment(vertical='bottom',
+                              horizontal='center',
+                              text_rotation=0,
+                              wrap_text=True,
+                              shrink_to_fit=False,
+                              indent=0)
+    c_c_alignment = Alignment(vertical='center',
+                              horizontal='center',
+                              text_rotation=0,
+                              wrap_text=True,
+                              shrink_to_fit=False,
+                              indent=0)
+    b_r_alignment = Alignment(vertical='bottom',
+                              horizontal='right',
+                              text_rotation=0,
+                              wrap_text=True,
+                              shrink_to_fit=False,
+                              indent=0)
+    c_r_alignment = Alignment(vertical='bottom',
+                              horizontal='center',
+                              text_rotation=0,
+                              wrap_text=True,
+                              shrink_to_fit=False,
+                              indent=0)
+    # Img
+    img = Image("excelexporters/myems.png")
+    img.width = img.width * 0.85
+    img.height = img.height * 0.85
+    # img = Image("myems.png")
+    ws.add_image(img, 'B1')
+
+    # Title
+    ws.row_dimensions[3].height = 60
+
+    ws['B3'].font = name_font
+    ws['B3'].alignment = b_r_alignment
+    ws['B3'] = 'Name:'
+    ws['C3'].border = b_border
+    ws['C3'].alignment = b_c_alignment
+    ws['C3'].font = name_font
+    ws['C3'] = name
+
+    ws['D3'].font = name_font
+    ws['D3'].alignment = b_r_alignment
+    ws['D3'] = 'Period:'
+    ws['E3'].border = b_border
+    ws['E3'].alignment = b_c_alignment
+    ws['E3'].font = name_font
+    ws['E3'] = period_type
+
+    ws['F3'].font = name_font
+    ws['F3'].alignment = b_r_alignment
+    ws['F3'] = 'Date:'
+    ws['G3'].border = b_border
+    ws['G3'].alignment = b_c_alignment
+    ws['G3'].font = name_font
+    ws['G3'] = reporting_start_datetime_local + "__" + reporting_end_datetime_local
+    ws.merge_cells("G3:H3")
+
+    if "reporting_period" not in report.keys() or \
+            "names" not in report['reporting_period'].keys() or len(report['reporting_period']['names']) == 0:
+        filename = str(uuid.uuid4()) + '.xlsx'
+        wb.save(filename)
+
+        return filename
+
+    ##################################
+
+    current_row_number = 6
+
+    reporting_period_data = report['reporting_period']
+
+    has_names_data_flag = True
+
+    if "names" not in reporting_period_data.keys() or \
+            reporting_period_data['names'] is None or \
+            len(reporting_period_data['names']) == 0:
+        has_names_data_flag = False
+
+    if has_names_data_flag:
+        ws['B' + str(current_row_number)].font = title_font
+        ws['B' + str(current_row_number)] = name + ' 报告期消耗'
+
+        current_row_number += 1
+
+        category = reporting_period_data['names']
+        ca_len = len(category)
+
+        ws.row_dimensions[current_row_number].height = 60
+        ws['B' + str(current_row_number)].fill = table_fill
+        ws['B' + str(current_row_number)].border = f_border
+
+        col = 'C'
+
+        for i in range(0, ca_len):
+            ws[col + str(current_row_number)].fill = table_fill
+            ws[col + str(current_row_number)].font = name_font
+            ws[col + str(current_row_number)].alignment = c_c_alignment
+            ws[col + str(current_row_number)].border = f_border
+            ws[col + str(current_row_number)] = \
+                reporting_period_data['names'][i] + " " + reporting_period_data['energy_category_names'][i] + \
+                " (" + reporting_period_data['units'][i] + ")"
+
+            col = chr(ord(col) + 1)
+
+        current_row_number += 1
+
+        ws['B' + str(current_row_number)].font = title_font
+        ws['B' + str(current_row_number)].alignment = c_c_alignment
+        ws['B' + str(current_row_number)].border = f_border
+        ws['B' + str(current_row_number)] = '消耗'
+
+        col = 'C'
+
+        for i in range(0, ca_len):
+            ws[col + str(current_row_number)].font = name_font
+            ws[col + str(current_row_number)].alignment = c_c_alignment
+            ws[col + str(current_row_number)].border = f_border
+            ws[col + str(current_row_number)] = round(reporting_period_data['subtotals'][i], 2)
+
+            col = chr(ord(col) + 1)
+
+        current_row_number += 1
+
+        # ws['B' + str(current_row_number)].font = title_font
+        # ws['B' + str(current_row_number)].alignment = c_c_alignment
+        # ws['B' + str(current_row_number)].border = f_border
+        # ws['B' + str(current_row_number)] = '单位面积值'
+        #
+        # col = 'C'
+        #
+        # for i in range(0, ca_len):
+        #     ws[col + str(current_row_number)].font = name_font
+        #     ws[col + str(current_row_number)].alignment = c_c_alignment
+        #     ws[col + str(current_row_number)].border = f_border
+        #     ws[col + str(current_row_number)] = round(reporting_period_data['subtotals_per_unit_area'][i], 2)
+        #
+        #     col = chr(ord(col) + 1)
+        #
+        # current_row_number += 1
+
+        ws['B' + str(current_row_number)].font = title_font
+        ws['B' + str(current_row_number)].alignment = c_c_alignment
+        ws['B' + str(current_row_number)].border = f_border
+        ws['B' + str(current_row_number)] = '环比'
+
+        col = 'C'
+
+        for i in range(0, ca_len):
+            ws[col + str(current_row_number)].font = name_font
+            ws[col + str(current_row_number)].alignment = c_c_alignment
+            ws[col + str(current_row_number)].border = f_border
+            ws[col + str(current_row_number)] = str(
+                round(reporting_period_data['increment_rates'][i] * 100, 2)) + '%' \
+                if reporting_period_data['increment_rates'][i] is not None else '-'
+
+            col = chr(ord(col) + 1)
+
+        current_row_number += 2
+
+        category_dict = group_by_category(reporting_period_data['energy_category_names'])
+
+        for category_dict_name, category_dict_values in category_dict.items():
+
+            ws['B' + str(current_row_number)].font = title_font
+            ws['B' + str(current_row_number)] = \
+                name + ' ' + category_dict_name + ' (' + reporting_period_data['units'][category_dict_values[0]] + \
+                ') 分项消耗占比'
+
+            current_row_number += 1
+            table_start_row_number = current_row_number
+
+            ws['B' + str(current_row_number)].fill = table_fill
+            ws['B' + str(current_row_number)].border = f_border
+
+            ws['C' + str(current_row_number)].font = name_font
+            ws['C' + str(current_row_number)].fill = table_fill
+            ws['C' + str(current_row_number)].alignment = c_c_alignment
+            ws['C' + str(current_row_number)].border = f_border
+            ws['C' + str(current_row_number)] = '消耗'
+
+            current_row_number += 1
+
+            for i in category_dict_values:
+                ws['B' + str(current_row_number)].font = title_font
+                ws['B' + str(current_row_number)].alignment = c_c_alignment
+                ws['B' + str(current_row_number)].border = f_border
+                ws['B' + str(current_row_number)] = \
+                    reporting_period_data['names'][i] + " (" + reporting_period_data['units'][i] + ")"
+                ws['C' + str(current_row_number)].font = name_font
+                ws['C' + str(current_row_number)].alignment = c_c_alignment
+                ws['C' + str(current_row_number)].border = f_border
+                ws['C' + str(current_row_number)] = round(reporting_period_data['subtotals'][i], 3)
+
+                current_row_number += 1
+
+            table_end_row_number = current_row_number - 1
+
+            pie = PieChart()
+            pie.title = \
+                name + ' ' + category_dict_name + ' (' + reporting_period_data['units'][category_dict_values[0]] + \
+                ') 分项消耗占比'
+            labels = Reference(ws, min_col=2, min_row=table_start_row_number + 1, max_row=table_end_row_number)
+            pie_data = Reference(ws, min_col=3, min_row=table_start_row_number, max_row=table_end_row_number)
+            pie.add_data(pie_data, titles_from_data=True)
+            pie.set_categories(labels)
+            pie.height = 6.6
+            pie.width = 9
+            s1 = pie.series[0]
+            s1.dLbls = DataLabelList()
+            s1.dLbls.showCatName = False
+            s1.dLbls.showVal = True
+            s1.dLbls.showPercent = True
+            ws.add_chart(pie, 'D' + str(table_start_row_number))
+
+            if len(category_dict_values) < 4:
+                current_row_number = current_row_number - len(category_dict_values) + 4
+
+            current_row_number += 1
+
+        #####################################
+
+        has_values_data = True
+        has_timestamps_data = True
+
+        if 'values' not in reporting_period_data.keys() or \
+                reporting_period_data['values'] is None or \
+                len(reporting_period_data['values']) == 0:
+            has_values_data = False
+
+        if 'timestamps' not in reporting_period_data.keys() or \
+                reporting_period_data['timestamps'] is None or \
+                len(reporting_period_data['timestamps']) == 0 or \
+                len(reporting_period_data['timestamps'][0]) == 0:
+            has_timestamps_data = False
+
+        if has_values_data and has_timestamps_data:
+            ca_len = len(reporting_period_data['names'])
+            time = reporting_period_data['timestamps'][0]
+
+            ws['B' + str(current_row_number)].font = title_font
+            ws['B' + str(current_row_number)] = name + ' 详细数据'
+
+            current_row_number += 1
+
+            chart_start_row_number = current_row_number
+
+            current_row_number += ca_len * 6
+            table_start_row_number = current_row_number
+
+            ws.row_dimensions[current_row_number].height = 60
+            ws['B' + str(current_row_number)].fill = table_fill
+            ws['B' + str(current_row_number)].font = title_font
+            ws['B' + str(current_row_number)].alignment = c_c_alignment
+            ws['B' + str(current_row_number)].border = f_border
+            ws['B' + str(current_row_number)] = '日期时间'
+
+            col = 'C'
+
+            for i in range(0, ca_len):
+                ws[col + str(current_row_number)].fill = table_fill
+                ws[col + str(current_row_number)].font = title_font
+                ws[col + str(current_row_number)].alignment = c_c_alignment
+                ws[col + str(current_row_number)].border = f_border
+                ws[col + str(current_row_number)] = \
+                    reporting_period_data['names'][i] + " (" + reporting_period_data['units'][i] + ")"
+                col = chr(ord(col) + 1)
+
+            current_row_number += 1
+
+            for i in range(0, len(time)):
+                ws['B' + str(current_row_number)].font = title_font
+                ws['B' + str(current_row_number)].alignment = c_c_alignment
+                ws['B' + str(current_row_number)].border = f_border
+                ws['B' + str(current_row_number)] = time[i]
+
+                col = 'C'
+                for j in range(0, ca_len):
+                    ws[col + str(current_row_number)].font = title_font
+                    ws[col + str(current_row_number)].alignment = c_c_alignment
+                    ws[col + str(current_row_number)].border = f_border
+                    ws[col + str(current_row_number)] = round(reporting_period_data['values'][j][i], 2) \
+                        if reporting_period_data['values'][j][i] is not None else 0.00
+                    col = chr(ord(col) + 1)
+
+                current_row_number += 1
+
+            table_end_row_number = current_row_number - 1
+
+            ws['B' + str(current_row_number)].font = title_font
+            ws['B' + str(current_row_number)].alignment = c_c_alignment
+            ws['B' + str(current_row_number)].border = f_border
+            ws['B' + str(current_row_number)] = '小计'
+
+            col = 'C'
+
+            for i in range(0, ca_len):
+                ws[col + str(current_row_number)].font = title_font
+                ws[col + str(current_row_number)].alignment = c_c_alignment
+                ws[col + str(current_row_number)].border = f_border
+                ws[col + str(current_row_number)] = round(reporting_period_data['subtotals'][i], 2)
+                col = chr(ord(col) + 1)
+
+            current_row_number += 2
+
+            format_time_width_number = 1.0
+            min_len_number = 1.0
+            min_width_number = 11.0  # format_time_width_number * min_len_number + 4 and min_width_number > 11.0
+
+            if period_type == 'hourly':
+                format_time_width_number = 4.0
+                min_len_number = 2
+                min_width_number = 12.0
+            elif period_type == 'daily':
+                format_time_width_number = 2.5
+                min_len_number = 4
+                min_width_number = 14.0
+            elif period_type == 'monthly':
+                format_time_width_number = 2.1
+                min_len_number = 4
+                min_width_number = 12.4
+            elif period_type == 'yearly':
+                format_time_width_number = 1.5
+                min_len_number = 5
+                min_width_number = 11.5
+
+            for i in range(0, ca_len):
+                line = LineChart()
+                line.title = '报告期消耗 - ' + \
+                             reporting_period_data['names'][i] + " (" + reporting_period_data['units'][i] + ")"
+                labels = Reference(ws, min_col=2, min_row=table_start_row_number + 1, max_row=table_end_row_number)
+                line_data = Reference(ws, min_col=3 + i, min_row=table_start_row_number, max_row=table_end_row_number)
+                line.add_data(line_data, titles_from_data=True)
+                line.set_categories(labels)
+                line_data = line.series[0]
+                line_data.marker.symbol = "circle"
+                line_data.smooth = True
+                line.x_axis.crosses = 'min'
+                line.height = 8.25
+                line.width = format_time_width_number * len(time) if len(time) > min_len_number else min_width_number
+                if line.width > 24:
+                    line.width = 24
+                line.dLbls = DataLabelList()
+                line.dLbls.dLblPos = 't'
+                line.dLbls.showVal = True
+                line.dLbls.showPercent = False
+                chart_col = 'B'
+                chart_cell = chart_col + str(chart_start_row_number)
+                chart_start_row_number += 6
+                ws.add_chart(line, chart_cell)
+
+    filename = str(uuid.uuid4()) + '.xlsx'
+    wb.save(filename)
+
+    return filename
+
+
+def group_by_category(category_list):
+    category_dict = dict()
+    for i, value in enumerate(category_list):
+        if value not in category_dict.keys():
+            category_dict[value] = list()
+        category_dict[value].append(i)
+    return category_dict