refactor: 重构图片代理控制器，优化代码结构

backend/src/controllers/setting.ts

@@ -3,6 +3,7 @@ import { sendSuccess, sendError } from "../utils/response";
 import Searcher from "../services/Searcher";
 import UserSetting from "../models/UserSetting";
 import GlobalSetting from "../models/GlobalSetting";
+import { iamgesInstance } from "./teleImages";
 
 export const settingController = {
   async get(req: Request, res: Response): Promise<void> {
@@ -45,6 +46,7 @@ export const settingController = {
         await UserSetting.update(userSettings, { where: { userId } });
         if (role === 1 && globalSetting) await GlobalSetting.update(globalSetting, { where: {} });
         Searcher.updateAxiosInstance();
+        iamgesInstance.updateProxyConfig();
         sendSuccess(res, {
           message: "保存成功",
         });

backend/src/controllers/teleImages.ts

@@ -1,43 +1,64 @@
 import axios, { AxiosInstance } from "axios";
-import { Request, Response } from "express";
+import e, { Request, Response } from "express";
 import tunnel from "tunnel";
 import GlobalSetting from "../models/GlobalSetting";
 import { GlobalSettingAttributes } from "../models/GlobalSetting";
 
 export class ImageControll {
   private axiosInstance: AxiosInstance | null = null;
-  private isUpdate = false;
+  private settings: GlobalSetting | null = null;
 
   constructor() {
     this.initializeAxiosInstance();
   }
 
-  private async initializeAxiosInstance(isUpdate = false): Promise<void> {
-    let settings = null;
-    if (isUpdate) {
-      settings = await GlobalSetting.findOne();
-      this.isUpdate = isUpdate;
-    } else {
-      return;
+  private async initializeAxiosInstance(): Promise<void> {
+    try {
+      this.settings = await GlobalSetting.findOne();
+    } catch (error) {
+      console.error("Error fetching global settings:", error);
     }
-    const globalSetting = settings?.dataValues || ({} as GlobalSettingAttributes);
+    const globalSetting = this.settings?.dataValues || ({} as GlobalSettingAttributes);
     this.axiosInstance = axios.create({
       timeout: 3000,
-      httpsAgent: tunnel.httpsOverHttp({
-        proxy: {
-          host: globalSetting.httpProxyHost,
-          port: globalSetting.httpProxyPort,
-          headers: {
-            "Proxy-Authorization": "",
-          },
-        },
-      }),
+      httpsAgent: globalSetting.isProxyEnabled
+        ? tunnel.httpsOverHttp({
+            proxy: {
+              host: globalSetting.httpProxyHost,
+              port: globalSetting.httpProxyPort,
+              headers: {
+                "Proxy-Authorization": "",
+              },
+            },
+          })
+        : undefined,
       withCredentials: true,
     });
   }
+  public async updateProxyConfig(): Promise<void> {
+    try {
+      this.settings = await GlobalSetting.findOne();
+      const globalSetting = this.settings?.dataValues || ({} as GlobalSettingAttributes);
+      if (this.axiosInstance) {
+        this.axiosInstance.defaults.httpsAgent = globalSetting.isProxyEnabled
+          ? tunnel.httpsOverHttp({
+              proxy: {
+                host: globalSetting.httpProxyHost,
+                port: globalSetting.httpProxyPort,
+                headers: {
+                  "Proxy-Authorization": "",
+                },
+              },
+            })
+          : undefined;
+      }
+    } catch (error) {
+      console.error("Error updating proxy config:", error);
+    }
+  }
+
   async getImages(req: Request, res: Response, url: string): Promise<void> {
     try {
-      if (!this.isUpdate) await this.initializeAxiosInstance(true);
       const response = await this.axiosInstance?.get(url, { responseType: "stream" });
       res.set("Content-Type", response?.headers["content-type"]);
       response?.data.pipe(res);
@@ -47,7 +68,7 @@ export class ImageControll {
   }
 }
 
-const iamgesInstance = new ImageControll();
+export const iamgesInstance = new ImageControll();
 
 export const imageControll = {
   getImages: async (req: Request, res: Response): Promise<void> => {