新增評分項目設定、資料庫整合

lib/database.ts

@@ -0,0 +1,78 @@
+import mysql from 'mysql2/promise';
+
+// 資料庫配置
+const dbConfig = {
+  host: process.env.DB_HOST || 'mysql.theaken.com',
+  port: parseInt(process.env.DB_PORT || '33306'),
+  user: process.env.DB_USER || 'root',
+  password: process.env.DB_PASSWORD || 'zh6161168',
+  database: process.env.DB_NAME || 'db_AI_scoring',
+  charset: 'utf8mb4',
+  timezone: '+08:00',
+  acquireTimeout: 60000,
+  timeout: 60000,
+  reconnect: true,
+  multipleStatements: true,
+};
+
+// 建立連接池
+const pool = mysql.createPool({
+  ...dbConfig,
+  waitForConnections: true,
+  connectionLimit: 10,
+  queueLimit: 0,
+});
+
+// 資料庫連接函數
+export async function getConnection() {
+  try {
+    const connection = await pool.getConnection();
+    return connection;
+  } catch (error) {
+    console.error('資料庫連接失敗:', error);
+    throw error;
+  }
+}
+
+// 執行查詢函數
+export async function query(sql: string, params?: any[]) {
+  try {
+    const [rows] = await pool.execute(sql, params);
+    return rows;
+  } catch (error) {
+    console.error('查詢執行失敗:', error);
+    throw error;
+  }
+}
+
+// 執行事務函數
+export async function transaction(callback: (connection: mysql.PoolConnection) => Promise<any>) {
+  const connection = await pool.getConnection();
+  try {
+    await connection.beginTransaction();
+    const result = await callback(connection);
+    await connection.commit();
+    return result;
+  } catch (error) {
+    await connection.rollback();
+    throw error;
+  } finally {
+    connection.release();
+  }
+}
+
+// 測試資料庫連接
+export async function testConnection() {
+  try {
+    const connection = await getConnection();
+    await connection.ping();
+    connection.release();
+    console.log('✅ 資料庫連接成功');
+    return true;
+  } catch (error) {
+    console.error('❌ 資料庫連接失敗:', error);
+    return false;
+  }
+}
+
+export default pool;