Refactor the backend

backend/src/services/DatabaseService.ts

@@ -1,13 +1,22 @@
 import { Sequelize, QueryTypes } from "sequelize";
+import GlobalSetting from "../models/GlobalSetting";
+import { Searcher } from "./Searcher";
+import sequelize from "../config/database";
+
+// 全局设置默认值
+const DEFAULT_GLOBAL_SETTINGS = {
+  httpProxyHost: "127.0.0.1",
+  httpProxyPort: 7890,
+  isProxyEnabled: false,
+  CommonUserCode: 9527,
+  AdminUserCode: 230713,
+};
 
 export class DatabaseService {
   private sequelize: Sequelize;
 
   constructor() {
-    this.sequelize = new Sequelize({
-      dialect: "sqlite",
-      storage: "./data/database.sqlite",
-    });
+    this.sequelize = sequelize;
   }
 
   async initialize(): Promise<void> {
@@ -16,11 +25,26 @@ export class DatabaseService {
       await this.cleanupBackupTables();
       await this.sequelize.sync({ alter: true });
       await this.sequelize.query("PRAGMA foreign_keys = ON");
+      await this.initializeGlobalSettings();
     } catch (error) {
       throw new Error(`数据库初始化失败: ${(error as Error).message}`);
     }
   }
 
+  private async initializeGlobalSettings(): Promise<void> {
+    try {
+      const settings = await GlobalSetting.findOne();
+      if (!settings) {
+        await GlobalSetting.create(DEFAULT_GLOBAL_SETTINGS);
+        console.log("✅ Global settings initialized with default values.");
+      }
+      await Searcher.updateAxiosInstance();
+    } catch (error) {
+      console.error("❌ Failed to initialize global settings:", error);
+      throw error;
+    }
+  }
+
   private async cleanupBackupTables(): Promise<void> {
     const backupTables = await this.sequelize.query<{ name: string }>(
       "SELECT name FROM sqlite_master WHERE type='table' AND name LIKE '%\\_backup%' ESCAPE '\\'",