1

server-node/src/services/wechatAuthService.ts

@@ -15,6 +15,7 @@ export type WechatAuthService = {
   buildAuthorizationUrl(params: {
     callbackUrl: string;
     state: string;
+    userAgent?: string | null;
   }): string;
   resolveCallbackProfile(params: {
     code?: string | null;
@@ -22,12 +23,40 @@ export type WechatAuthService = {
   }): Promise<WechatIdentityProfile>;
 };
 
+type WechatAuthorizationScene = 'desktop' | 'wechat_in_app';
+
+const WECHAT_IN_APP_AUTHORIZE_ENDPOINT =
+  'https://open.weixin.qq.com/connect/oauth2/authorize';
+
+function isWechatBrowser(userAgent?: string | null) {
+  return /MicroMessenger/iu.test(userAgent ?? '');
+}
+
+function isMobileBrowser(userAgent?: string | null) {
+  return /Android|iPhone|iPad|iPod|Mobile/iu.test(userAgent ?? '');
+}
+
+function resolveWechatAuthorizationScene(
+  userAgent?: string | null,
+): WechatAuthorizationScene {
+  if (isWechatBrowser(userAgent)) {
+    return 'wechat_in_app';
+  }
+
+  if (isMobileBrowser(userAgent)) {
+    throw badRequest('当前浏览器请使用手机号登录，或在微信内打开后再使用微信登录');
+  }
+
+  return 'desktop';
+}
+
 class MockWechatAuthService implements WechatAuthService {
   constructor(private readonly config: AppConfig['wechatAuth']) {}
 
   buildAuthorizationUrl(params: {
     callbackUrl: string;
     state: string;
+    userAgent?: string | null;
   }) {
     const callbackUrl = new URL(params.callbackUrl);
     callbackUrl.searchParams.set('mock_code', this.config.mockUserId);
@@ -64,12 +93,21 @@ class RealWechatAuthService implements WechatAuthService {
   buildAuthorizationUrl(params: {
     callbackUrl: string;
     state: string;
+    userAgent?: string | null;
   }) {
-    const url = new URL(this.config.authorizeEndpoint);
+    const scene = resolveWechatAuthorizationScene(params.userAgent);
+    const url = new URL(
+      scene === 'wechat_in_app'
+        ? WECHAT_IN_APP_AUTHORIZE_ENDPOINT
+        : this.config.authorizeEndpoint,
+    );
     url.searchParams.set('appid', this.config.appId);
     url.searchParams.set('redirect_uri', params.callbackUrl);
     url.searchParams.set('response_type', 'code');
-    url.searchParams.set('scope', 'snsapi_login');
+    url.searchParams.set(
+      'scope',
+      scene === 'wechat_in_app' ? 'snsapi_userinfo' : 'snsapi_login',
+    );
     url.searchParams.set('state', params.state);
     return `${url.toString()}#wechat_redirect`;
   }