penambahan export pada cost management dan summary detail

src/app/_services/tableexcel.service.ts

@@ -84,4 +84,70 @@ export class TableexcelService {
     });
     this.saveAsExcelFile(excelBuffer, excelFileName);
   }
+
+  public exportAsExcelFileCostManage(
+    json: any[],
+    excelFileName: string,
+    columns: string[]
+  ): void {
+    // Filter the json data based on the columns
+    const filteredJson = json.map((item) => {
+      const filteredItem = {};
+      columns.forEach((column) => {
+        filteredItem[column] = item[column];
+      });
+      return filteredItem;
+    });
+  
+    // Calculate totals for estimation_cost and total_use
+    const totalEstimationCost = filteredJson.reduce((sum, item) => sum + (item['estimation_cost'] || 0), 0);
+    const totalUse = filteredJson.reduce((sum, item) => sum + (item['total_use'] || 0), 0);
+  
+    // Create the worksheet
+    const worksheet: XLSX.WorkSheet = XLSX.utils.json_to_sheet(filteredJson);
+    const columnWidths = [
+      { wch: 40 },
+      { wch: 30 },
+      { wch: 20 },
+      { wch: 30 },
+      { wch: 30 },
+      { wch: 30 },
+    ];
+    worksheet["!cols"] = columnWidths;
+  
+    // Add header
+    const header = [
+      "Building",
+      "Room",
+      "Category",
+      "Total Use",
+      "Estimation Cost",
+      "Date",
+    ];
+    XLSX.utils.sheet_add_aoa(worksheet, [header]);
+  
+    // Add totals row
+    const totalsRow = [
+      "Totals",
+      "",
+      "",
+      `Total: ${totalUse} Kwh`,
+      `Total: ${totalEstimationCost}`,
+      ""
+    ];
+    XLSX.utils.sheet_add_aoa(worksheet, [totalsRow], { origin: -1 });
+  
+    // Create the workbook
+    const workbook: XLSX.WorkBook = {
+      Sheets: { data: worksheet },
+      SheetNames: ["data"],
+    };
+  
+    // Write the workbook and save it
+    const excelBuffer: any = XLSX.write(workbook, {
+      bookType: "xlsx",
+      type: "array",
+    });
+    this.saveAsExcelFile(excelBuffer, excelFileName);
+  }  
 }