feat: align with upstream 1.5.9.9

server/api/admin/semesters/[id].delete.ts

@@ -0,0 +1,63 @@
+import { db, eq, semesters, songs } from '~/drizzle/db'
+
+export default defineEventHandler(async (event) => {
+  // 验证管理员权限
+  const user = event.context.user
+  if (!user || !['ADMIN', 'SUPER_ADMIN', 'SONG_ADMIN'].includes(user.role)) {
+    throw createError({
+      statusCode: 403,
+      message: '需要管理员权限'
+    })
+  }
+
+  // 获取学期 ID
+  const semesterId = parseInt(getRouterParam(event, 'id') || '0')
+  if (!semesterId || isNaN(semesterId)) {
+    throw createError({
+      statusCode: 400,
+      message: '无效的学期 ID'
+    })
+  }
+
+  // 检查学期是否存在
+  const semesterResult = await db
+    .select()
+    .from(semesters)
+    .where(eq(semesters.id, semesterId))
+    .limit(1)
+  const semester = semesterResult[0]
+
+  if (!semester) {
+    throw createError({
+      statusCode: 404,
+      message: '学期不存在'
+    })
+  }
+
+  // 检查是否为当前活跃学期
+  if (semester.isActive) {
+    throw createError({
+      statusCode: 400,
+      message: '不能删除当前活跃的学期'
+    })
+  }
+
+  // 检查是否有关联的歌曲
+  const songCountResult = await db.select().from(songs).where(eq(songs.semester, semester.name))
+  const songCount = songCountResult.length
+
+  if (songCount > 0) {
+    throw createError({
+      statusCode: 400,
+      message: `该学期下还有 ${songCount} 首歌曲，无法删除`
+    })
+  }
+
+  // 删除学期
+  await db.delete(semesters).where(eq(semesters.id, semesterId))
+
+  return {
+    success: true,
+    message: '学期删除成功'
+  }
+})