實作部門分析數據

app/api/admin/analytics/departments/route.ts

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+import { NextRequest, NextResponse } from "next/server"
+import { executeQuery } from "@/lib/database/connection"
+
+export async function GET(request: NextRequest) {
+  try {
+    // 獲取所有用戶
+    const users = await executeQuery(`
+      SELECT id, name, department, role
+      FROM users
+      ORDER BY department, name
+    `)
+
+    // 獲取所有測試結果
+    const testResults = await executeQuery(`
+      SELECT 
+        tr.user_id,
+        tr.test_type,
+        tr.score,
+        tr.completed_at,
+        u.name as user_name,
+        u.department
+      FROM test_results tr
+      LEFT JOIN users u ON tr.user_id = u.id
+      ORDER BY u.department, tr.completed_at DESC
+    `)
+
+    // 獲取綜合測試結果
+    const combinedResults = await executeQuery(`
+      SELECT 
+        ctr.user_id,
+        ctr.logic_score,
+        ctr.creativity_score,
+        ctr.overall_score,
+        ctr.completed_at,
+        u.name as user_name,
+        u.department
+      FROM combined_test_results ctr
+      LEFT JOIN users u ON ctr.user_id = u.id
+      ORDER BY u.department, ctr.completed_at DESC
+    `)
+
+    // 按部門分組統計
+    const departmentMap = new Map()
+
+    // 初始化所有部門
+    const allDepartments = Array.from(new Set(users.map((u: any) => u.department)))
+    
+    allDepartments.forEach(dept => {
+      departmentMap.set(dept, {
+        department: dept,
+        totalUsers: 0,
+        participatedUsers: new Set(),
+        logicScores: [],
+        creativeScores: [],
+        combinedScores: [],
+        testCounts: {
+          logic: 0,
+          creative: 0,
+          combined: 0
+        }
+      })
+    })
+
+    // 統計用戶數據
+    users.forEach((user: any) => {
+      const dept = user.department
+      if (departmentMap.has(dept)) {
+        departmentMap.get(dept).totalUsers++
+      }
+    })
+
+    // 統計測試結果
+    testResults.forEach((result: any) => {
+      const dept = result.department
+      if (departmentMap.has(dept)) {
+        const deptData = departmentMap.get(dept)
+        deptData.participatedUsers.add(result.user_id)
+        deptData.testCounts[result.test_type]++
+        
+        if (result.test_type === 'logic') {
+          deptData.logicScores.push(result.score)
+        } else if (result.test_type === 'creative') {
+          deptData.creativeScores.push(result.score)
+        }
+      }
+    })
+
+    // 統計綜合測試結果
+    combinedResults.forEach((result: any) => {
+      const dept = result.department
+      if (departmentMap.has(dept)) {
+        const deptData = departmentMap.get(dept)
+        deptData.participatedUsers.add(result.user_id)
+        deptData.testCounts.combined++
+        deptData.combinedScores.push(result.overall_score)
+      }
+    })
+
+    // 計算部門統計數據
+    const departmentStats = Array.from(departmentMap.values()).map(deptData => {
+      const participatedCount = deptData.participatedUsers.size
+      const participationRate = deptData.totalUsers > 0 
+        ? Math.round((participatedCount / deptData.totalUsers) * 100) 
+        : 0
+
+      // 計算平均分數
+      const averageLogicScore = deptData.logicScores.length > 0
+        ? Math.round(deptData.logicScores.reduce((sum: number, score: number) => sum + score, 0) / deptData.logicScores.length)
+        : 0
+
+      const averageCreativeScore = deptData.creativeScores.length > 0
+        ? Math.round(deptData.creativeScores.reduce((sum: number, score: number) => sum + score, 0) / deptData.creativeScores.length)
+        : 0
+
+      const averageCombinedScore = deptData.combinedScores.length > 0
+        ? Math.round(deptData.combinedScores.reduce((sum: number, score: number) => sum + score, 0) / deptData.combinedScores.length)
+        : 0
+
+      // 計算整體平均分數
+      const allScores = [averageLogicScore, averageCreativeScore, averageCombinedScore].filter(s => s > 0)
+      const overallAverage = allScores.length > 0
+        ? Math.round(allScores.reduce((sum, score) => sum + score, 0) / allScores.length)
+        : 0
+
+      return {
+        department: deptData.department,
+        totalUsers: deptData.totalUsers,
+        participatedUsers: participatedCount,
+        participationRate,
+        averageLogicScore,
+        averageCreativeScore,
+        averageCombinedScore,
+        overallAverage,
+        testCounts: deptData.testCounts
+      }
+    })
+
+    // 計算整體統計
+    const totalUsers = users.length
+    const totalParticipants = new Set([
+      ...testResults.map((r: any) => r.user_id),
+      ...combinedResults.map((r: any) => r.user_id)
+    ]).size
+    const overallParticipationRate = totalUsers > 0 
+      ? Math.round((totalParticipants / totalUsers) * 100) 
+      : 0
+
+    // 計算整體平均分數
+    const allScores = [
+      ...testResults.map((r: any) => r.score),
+      ...combinedResults.map((r: any) => r.overall_score)
+    ]
+    const averageScore = allScores.length > 0
+      ? Math.round(allScores.reduce((sum, score) => sum + score, 0) / allScores.length)
+      : 0
+
+    const totalTests = testResults.length + combinedResults.length
+
+    return NextResponse.json({
+      success: true,
+      data: {
+        departmentStats,
+        overallStats: {
+          totalUsers,
+          totalParticipants,
+          overallParticipationRate,
+          averageScore,
+          totalTests
+        }
+      }
+    })
+
+  } catch (error) {
+    console.error("獲取部門分析數據失敗:", error)
+    return NextResponse.json(
+      { success: false, message: "獲取部門分析數據失敗", error: error instanceof Error ? error.message : String(error) },
+      { status: 500 }
+    )
+  }
+}