feat: align with upstream 1.5.9.9

server/api/songs/count.get.ts

@@ -0,0 +1,24 @@
+import { createError, defineEventHandler, getQuery } from 'h3'
+import { db } from '~/drizzle/db'
+import { songs } from '~/drizzle/schema'
+import { count, eq } from 'drizzle-orm'
+import { createApiError } from '~~/server/utils/apiError'
+
+export default defineEventHandler(async (event) => {
+  const query = getQuery(event)
+  const semester = query.semester as string
+
+  try {
+    const result = semester
+      ? await db.select({ count: count() }).from(songs).where(eq(songs.semester, semester))
+      : await db.select({ count: count() }).from(songs)
+    const totalCount = result[0]?.count || 0
+
+    return {
+      count: totalCount
+    }
+  } catch (error) {
+    console.error('获取歌曲数量失败:', error)
+    throw createApiError(500, 'SONG_FETCH_COUNT_FAILED', '获取歌曲数量失败')
+  }
+})