feat: 切换为MariaDB数据库存储

app/api/districts/route.ts

@@ -1,17 +1,21 @@
 import { NextResponse } from 'next/server';
-import fs from 'fs/promises';
-import path from 'path';
-
-const DATA_DIR = path.join(process.cwd(), 'data');
-const DISTRICTS_FILE = path.join(DATA_DIR, 'districts.json');
+import pool from '@/lib/db';
 
 export async function GET() {
+  let connection;
   try {
-    const data = await fs.readFile(DISTRICTS_FILE, 'utf-8');
-    const districts = JSON.parse(data);
+    connection = await pool.getConnection();
+    
+    const [rows] = await connection.query<any[]>('SELECT name FROM districts ORDER BY sort_order, id');
+    
+    const districts = rows.map((row: any) => row.name);
+    
+    connection.release();
     return NextResponse.json({ districts });
   } catch (error) {
     console.error('Get districts error:', error);
     return NextResponse.json({ districts: [] });
+  } finally {
+    if (connection) connection.release();
   }
 }