feat: Docker部署与CI/CD集成, 搜索栏修复, 上传目录改为data

lib/db.ts

@@ -0,0 +1,50 @@
+import mysql from 'mysql2/promise';
+import { SystemConfig } from '../types';
+
+// This is a singleton to reuse the connection pool in a server environment (Next.js)
+
+let pool: mysql.Pool | null = null;
+
+// Default config (fallback)
+const DEFAULT_CONFIG = {
+    host: process.env.DB_HOST || '127.0.0.1',
+    user: process.env.DB_USER || 'root',
+    password: process.env.DB_PASSWORD || 'password',
+    database: process.env.DB_NAME || 'nexus_db',
+    waitForConnections: true,
+    connectionLimit: 10,
+    queueLimit: 0
+};
+
+export const getDbConnection = async (configOverride?: SystemConfig) => {
+    if (pool) return pool;
+
+    const config = configOverride ? {
+        host: configOverride.dbHost,
+        port: parseInt(configOverride.dbPort),
+        user: configOverride.dbUser,
+        password: configOverride.dbPass,
+        database: configOverride.dbName,
+    } : DEFAULT_CONFIG;
+
+    try {
+        pool = mysql.createPool({
+            ...config,
+            waitForConnections: true,
+            connectionLimit: 10,
+            queueLimit: 0
+        });
+        
+        
+        return pool;
+    } catch (error) {
+        console.error('[MYSQL] Failed to initialize pool:', error);
+        throw error;
+    }
+};
+
+export const query = async (sql: string, params: any[]) => {
+    const db = await getDbConnection();
+    const [results] = await db.execute(sql, params);
+    return results;
+};