feat: align with upstream 1.5.9.9

server/api/admin/grade-class/index.get.ts

@@ -0,0 +1,50 @@
+import { defineEventHandler } from 'h3'
+import { and, eq, isNotNull, sql } from 'drizzle-orm'
+import { db } from '~/drizzle/db'
+import { gradeClass, users } from '~/drizzle/schema'
+import { smartSort } from '~~/server/utils/grade-class-core'
+import { createApiError } from '~~/server/utils/apiError'
+import { SERVER_ERROR_CODES } from '~~/server/config/constants'
+
+export default defineEventHandler(async (event) => {
+  // 检查认证和权限
+  const user = event.context.user
+  if (!user || !['ADMIN', 'SUPER_ADMIN'].includes(user.role)) {
+    throw createApiError(403, SERVER_ERROR_CODES.COMMON_INSUFFICIENT_PERMISSION, '没有权限访问')
+  }
+
+  const [rows, counts] = await Promise.all([
+    db.select().from(gradeClass),
+    // 当前各年级班级的活跃用户数（用于管理界面人数展示）
+    db
+      .select({
+        grade: users.grade,
+        class: users.class,
+        count: sql<number>`count(*)::int`
+      })
+      .from(users)
+      .where(and(eq(users.status, 'active'), isNotNull(users.grade), isNotNull(users.class)))
+      .groupBy(users.grade, users.class)
+  ])
+
+  const countMap = new Map(
+    counts.map((row) => [`${row.grade}\u0000${row.class}`, row.count])
+  )
+
+  const items = rows
+    .map((item) => ({
+      id: item.id,
+      grade: item.grade,
+      class: item.class,
+      userCount: countMap.get(`${item.grade}\u0000${item.class}`) || 0
+    }))
+    .sort((a, b) => {
+      const gradeResult = smartSort(a.grade, b.grade)
+      return gradeResult || smartSort(a.class, b.class)
+    })
+
+  return {
+    success: true,
+    items
+  }
+})