From ffb8e2e99e1d0c105b1c545ff7ab4d3149ec6c48 Mon Sep 17 00:00:00 2001
From: joonhoekim <26rote@gmail.com>
Date: Mon, 1 Dec 2025 15:22:38 +0900
Subject: (김준회) 서버측 where, order by 절 지원을 위한 v2 임시작업
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---
 components/client-table-v2/import-utils.ts | 100 +++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 components/client-table-v2/import-utils.ts

(limited to 'components/client-table-v2/import-utils.ts')

diff --git a/components/client-table-v2/import-utils.ts b/components/client-table-v2/import-utils.ts
new file mode 100644
index 00000000..bc7f4b44
--- /dev/null
+++ b/components/client-table-v2/import-utils.ts
@@ -0,0 +1,100 @@
+import ExcelJS from "exceljs"
+
+interface ImportExcelOptions {
+  file: File
+  /**
+   * Map Excel header names to data keys.
+   * Example: { "Name": "name", "Age": "age" }
+   */
+  columnMapping?: Record<string, string>
+  /**
+   * Row offset to start reading data (0-based).
+   * Default: 1 (assuming row 0 is header)
+   */
+  dataStartRow?: number
+}
+
+export interface ExcelImportResult<T = any> {
+  data: T[]
+  errors: string[]
+}
+
+/**
+ * Generic function to read an Excel file and convert it to an array of objects.
+ * Does NOT handle database insertion or validation logic.
+ */
+export async function importFromExcel<T = any>({
+  file,
+  columnMapping = {},
+  dataStartRow = 1,
+}: ImportExcelOptions): Promise<ExcelImportResult<T>> {
+  const workbook = new ExcelJS.Workbook()
+  const arrayBuffer = await file.arrayBuffer()
+  
+  try {
+    await workbook.xlsx.load(arrayBuffer)
+  } catch (error) {
+     return { data: [], errors: ["Failed to parse Excel file. Please ensure it is a valid .xlsx file."] }
+  }
+
+  const worksheet = workbook.worksheets[0] // Read the first sheet
+  const data: T[] = []
+  const errors: string[] = []
+
+  if (!worksheet) {
+    return { data: [], errors: ["No worksheet found in the Excel file."] }
+  }
+
+  // 1. Read Header Row (assumed to be row 1 for mapping if no explicit mapping provided, 
+  //    or we can use it to validate mapping)
+  const headers: string[] = []
+  const headerRow = worksheet.getRow(1)
+  headerRow.eachCell((cell, colNumber) => {
+    headers[colNumber] = String(cell.value).trim()
+  })
+
+  // 2. Iterate Data Rows
+  worksheet.eachRow((row, rowNumber) => {
+    if (rowNumber <= dataStartRow) return // Skip header/pre-header rows
+
+    const rowData: any = {}
+    let hasData = false
+
+    row.eachCell((cell, colNumber) => {
+      const headerText = headers[colNumber]
+      if (!headerText) return
+
+      // Determine the key to use for this column
+      // Priority: Explicit mapping -> Header text as key
+      const key = columnMapping[headerText] || headerText
+
+      let cellValue = cell.value
+
+      // Handle ExcelJS object values (e.g. formula results, hyperlinks)
+      if (cellValue && typeof cellValue === 'object') {
+        if ('result' in cellValue) {
+             // Formula result
+             cellValue = (cellValue as any).result
+        } else if ('text' in cellValue) {
+             // Hyperlink text
+             cellValue = (cellValue as any).text
+        } else if ('richText' in cellValue) {
+             // Rich text
+             cellValue = (cellValue as any).richText.map((t: any) => t.text).join('')
+        }
+      }
+      
+      if (cellValue !== null && cellValue !== undefined && String(cellValue).trim() !== '') {
+          hasData = true
+          rowData[key] = cellValue
+      }
+    })
+
+    if (hasData) {
+      data.push(rowData as T)
+    }
+  })
+
+  return { data, errors }
+}
+
-- 
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