简化H5应用用户授权

frontend/src/app/context/UserContext.tsx

@@ -51,6 +51,13 @@ const DEFAULT_PROFILE: UserProfile = {
 };
 
 const STORAGE_KEY = "pregnancy_user_profile";
+const USER_BASIC_KEY = "user_basic";
+
+export interface BasicUserInfo {
+  id: string;
+  openid: string;
+  phone: string;
+}
 
 function loadProfile(): UserProfile {
   try {
@@ -169,6 +176,7 @@ interface UserContextValue {
   updateUser: (data: Partial<UserProfile>) => void;
   updateUserRemote: (data: Partial<UserProfile>) => Promise<void>;
   setToken: (token: string) => void;
+  setTokenAndUser: (token: string, info: BasicUserInfo) => void;
   fetchProfile: () => Promise<void>;
   logout: () => void;
 }
@@ -224,17 +232,28 @@ export function UserProvider({ children }: { children: ReactNode }) {
     }
   }, [updateUser]);
 
-  const fetchProfile = useCallback(async () => {
+  const fetchProfile = useCallback(async (): Promise<UserProfileDTO | null> => {
     try {
       const dto = await getUserProfile();
       const profile = mapDtoToProfile(dto);
       setUser(profile);
       saveProfile(profile);
+      return dto;
     } catch {
       // Token 失效会被 api.ts 自动处理（跳转登录页）
+      return null;
     }
   }, []);
 
+  const setTokenAndUser = useCallback((newToken: string, info: BasicUserInfo) => {
+    // 清理前一个用户的本地数据
+    localStorage.removeItem(STORAGE_KEY);
+    setUser(DEFAULT_PROFILE);
+    saveToken(newToken);
+    localStorage.setItem(USER_BASIC_KEY, JSON.stringify(info));
+    setTokenState(newToken);
+  }, []);
+
   const logout = useCallback(() => {
     clearToken();
     localStorage.removeItem(STORAGE_KEY);
@@ -250,7 +269,7 @@ export function UserProvider({ children }: { children: ReactNode }) {
   }, []); // eslint-disable-line react-hooks/exhaustive-deps
 
   return (
-    <UserContext.Provider value={{ user, token, updateUser, updateUserRemote, setToken, fetchProfile, logout }}>
+    <UserContext.Provider value={{ user, token, updateUser, updateUserRemote, setToken, setTokenAndUser, fetchProfile, logout }}>
       {children}
     </UserContext.Provider>
   );