注册登录优化

AiStudy-app/src/app/tab3/tab3.page.ts

@@ -178,17 +178,23 @@ export class Tab3Page implements OnInit {
       let user = new CloudUser();
       await user.login(this.loginData.username, this.loginData.password);
       
-      // 更新界面状态
+      // 登录后检查用户是否真的存在
+      const currentUser = new CloudUser();
+      if (!currentUser.get('username')) {
+        throw new Error('用户不存在');
+      }
+      
+      // 如果登录成功且用户存在，更新界面状态
       this.isLoggedIn = true;
-      this.userName = user.get('username');
-      this.userLevel = user.get('level') || 'LV.1 新手学习者';
-      this.userAvatar = user.get('avatar') || 'assets/anime-avatar.png';
+      this.userName = currentUser.get('username');
+      this.userLevel = currentUser.get('level') || 'LV.1 新手学习者';
+      this.userAvatar = currentUser.get('avatar') || 'assets/anime-avatar.png';
       
       // 更新用户统计数据
       this.userStats = {
-        learningDays: user.get('learningDays') || 0,
-        achievementCount: user.get('achievementCount') || 0,
-        completionRate: user.get('completionRate') || 0
+        learningDays: currentUser.get('learningDays') || 0,
+        achievementCount: currentUser.get('achievementCount') || 0,
+        completionRate: currentUser.get('completionRate') || 0
       };
 
       // 显示登录成功提示
@@ -202,8 +208,12 @@ export class Tab3Page implements OnInit {
     } catch (error: any) {
       console.error('登录错误:', error);
       let errorMessage = '登录失败，请稍后重试';
+      
+      // 根据错误代码显示不同的错误信息
       if (error.code === 101) {
         errorMessage = '用户名或密码错误';
+      } else if (error.code === 205 || error.message === '用户不存在') {
+        errorMessage = '用户不存在，请先注册';
       }
 
       const alert = await this.alertController.create({
@@ -212,6 +222,10 @@ export class Tab3Page implements OnInit {
         buttons: ['确定']
       });
       await alert.present();
+
+      // 如果出错，确保用户状态为未登录
+      this.isLoggedIn = false;
+      this.resetUserData();
     }
   }