From 9cabe879404f1ec05dbf4e65d55162b5573aeced Mon Sep 17 00:00:00 2001
From: joonhoekim <26rote@gmail.com>
Date: Fri, 28 Nov 2025 20:30:23 +0900
Subject: (김준회) dynamic table - init
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---
 components/client-table/export-utils.ts | 136 ++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 components/client-table/export-utils.ts

(limited to 'components/client-table/export-utils.ts')

diff --git a/components/client-table/export-utils.ts b/components/client-table/export-utils.ts
new file mode 100644
index 00000000..edcc8dff
--- /dev/null
+++ b/components/client-table/export-utils.ts
@@ -0,0 +1,136 @@
+import { ColumnDef } from "@tanstack/react-table"
+import ExcelJS from "exceljs"
+import { saveAs } from "file-saver"
+
+export async function exportToExcel<TData>(
+  data: TData[],
+  columns: ColumnDef<TData, any>[],
+  filename: string = "export.xlsx"
+) {
+  const workbook = new ExcelJS.Workbook()
+  const worksheet = workbook.addWorksheet("Data")
+
+  // Filter out utility columns and resolve headers
+  const exportableColumns = columns.filter(
+    (col) => 
+      col.id !== "select" && 
+      col.id !== "actions" && 
+      // @ts-ignore - simple check for now
+      (typeof col.header === "string" || typeof col.accessorKey === "string")
+  )
+
+  // Setup columns
+  worksheet.columns = exportableColumns.map((col) => {
+    let headerText = ""
+    if (typeof col.header === "string") {
+      headerText = col.header
+    } else if (typeof col.accessorKey === "string") {
+      headerText = col.accessorKey
+    }
+
+    return {
+      header: headerText,
+      key: (col.accessorKey as string) || col.id,
+      width: 20, 
+    }
+  })
+
+  // Add rows
+  data.forEach((row) => {
+    const rowData: any = {}
+    exportableColumns.forEach((col) => {
+      const key = (col.accessorKey as string) || col.id
+      if (key) {
+        const value = getValueByPath(row, key)
+        rowData[key] = value
+      }
+    })
+    worksheet.addRow(rowData)
+  })
+
+  worksheet.getRow(1).font = { bold: true }
+
+  const buffer = await workbook.xlsx.writeBuffer()
+  const blob = new Blob([buffer], {
+    type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+  })
+  saveAs(blob, filename)
+}
+
+function getValueByPath(obj: any, path: string) {
+  return path.split('.').reduce((acc, part) => acc && acc[part], obj)
+}
+
+interface CreateTemplateOptions<TData> {
+  columns: ColumnDef<TData, any>[]
+  filename?: string
+  includeColumns?: { key: string; header: string }[]
+  excludeColumns?: string[] // accessorKey or id to exclude
+}
+
+export async function createExcelTemplate<TData>({
+  columns,
+  filename = "template.xlsx",
+  includeColumns = [],
+  excludeColumns = [],
+}: CreateTemplateOptions<TData>) {
+  const workbook = new ExcelJS.Workbook()
+  const worksheet = workbook.addWorksheet("Template")
+
+  // 1. Filter columns from definition
+  const baseColumns = columns.filter((col) => {
+    const key = (col.accessorKey as string) || col.id
+    
+    // Skip system columns
+    if (col.id === "select" || col.id === "actions") return false
+    
+    // Skip excluded columns
+    if (excludeColumns.includes(key!) || (col.id && excludeColumns.includes(col.id))) return false
+
+    return true
+  })
+
+  // 2. Map to ExcelJS columns
+  const excelColumns = baseColumns.map((col) => {
+    let headerText = ""
+    if (typeof col.header === "string") {
+      headerText = col.header
+    } else if (typeof col.accessorKey === "string") {
+      headerText = col.accessorKey
+    }
+    
+    return {
+      header: headerText,
+      key: (col.accessorKey as string) || col.id,
+      width: 20
+    }
+  })
+
+  // 3. Add extra included columns
+  includeColumns.forEach((col) => {
+    excelColumns.push({
+      header: col.header,
+      key: col.key,
+      width: 20
+    })
+  })
+
+  worksheet.columns = excelColumns
+
+  // Style Header
+  const headerRow = worksheet.getRow(1)
+  headerRow.font = { bold: true }
+  headerRow.fill = {
+    type: 'pattern',
+    pattern: 'solid',
+    fgColor: { argb: 'FFD3D3D3' } // Light Gray
+  }
+
+  // Add Data Validation or Comments if needed (future expansion)
+
+  const buffer = await workbook.xlsx.writeBuffer()
+  const blob = new Blob([buffer], {
+    type: "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+  })
+  saveAs(blob, filename)
+}
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