VocPass · devin-ai-integration · Jul 3, 2026
diff --git a/lib/app.dart b/lib/app.dart
@@ -79,8 +79,12 @@ class _RootRouterState extends State<RootRouter> {
   }
 
   Future<void> _handleTokenLoginAndSyncNotify(String token) async {
-    await VocPassAuthService.instance.handleTokenLogin(token);
-    await NotificationTokenService.instance.uploadNow();
+    try {
+      await VocPassAuthService.instance.handleTokenLogin(token);
+      await NotificationTokenService.instance.uploadNow();
+    } catch (e) {
+      if (kDebugMode) print('[DeepLink] token login failed: $e');
+    }
   }
 
   @override

diff --git a/lib/screens/attendance_screen.dart b/lib/screens/attendance_screen.dart
@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:shared_preferences/shared_preferences.dart';
@@ -139,7 +140,8 @@ class _AttendanceScreenState extends State<AttendanceScreen> {
       } else {
         setState(() { _error = e.message; _isLoading = false; });
       }
-    } catch (_) {
+    } catch (e) {
+      if (kDebugMode) print('[Attendance] 缺曠資料載入失敗: $e');
       setState(() { _error = '缺曠資料載入失敗'; _isLoading = false; });
     }
   }

diff --git a/lib/screens/curriculum_screen.dart b/lib/screens/curriculum_screen.dart
@@ -1,5 +1,6 @@
 import 'dart:async';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
@@ -126,7 +127,8 @@ class _CurriculumScreenState extends State<CurriculumScreen> {
           _isLoading = false;
         });
       }
-    } catch (_) {
+    } catch (e) {
+      if (kDebugMode) print('[Curriculum] 課表載入失敗: $e');
       if (!mounted) return;
       setState(() {
         _error = '課表載入失敗';

diff --git a/lib/screens/exam_score_screen.dart b/lib/screens/exam_score_screen.dart
@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
@@ -49,7 +50,8 @@ class _ExamScoreScreenState extends State<ExamScoreScreen> {
           _isLoading = false;
         });
       }
-    } catch (_) {
+    } catch (e) {
+      if (kDebugMode) print('[ExamScore] 考試選單載入失敗: $e');
       setState(() {
         _error = '考試成績載入失敗';
         _isLoading = false;
@@ -148,7 +150,8 @@ class _ExamScoreDetailScreenState extends State<ExamScoreDetailScreen> {
         _error = e.message;
         _isLoading = false;
       });
-    } catch (_) {
+    } catch (e) {
+      if (kDebugMode) print('[ExamScore] 考試成績載入失敗: $e');
       setState(() {
         _error = '考試成績載入失敗';
         _isLoading = false;

diff --git a/lib/screens/following_screen.dart b/lib/screens/following_screen.dart
@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
@@ -34,7 +35,9 @@ class _FollowingListScreenState extends State<FollowingListScreen> {
       final profile = await VocPassAuthService.instance.fetchUser(username);
       if (!mounted) return;
       setState(() => _profiles[username] = profile);
-    } catch (_) {}
+    } catch (e) {
+      if (kDebugMode) print('[FollowingList] 取得用戶 $username 資料失敗: $e');
+    }
   }
 
   void _showAddDialog() {

diff --git a/lib/screens/forum/forum_screen.dart b/lib/screens/forum/forum_screen.dart
@@ -2,6 +2,7 @@
 
 import 'dart:async';
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:url_launcher/url_launcher.dart';
@@ -114,7 +115,10 @@ class _ForumScreenState extends State<ForumScreen> {
       else
         Future<ForumAdminInfo?>.value(null),
       ForumService.instance.fetchVocPassAdminInfo(),
-      ForumService.instance.fetchTags().catchError((_) => <ForumTagOption>[]),
+      ForumService.instance.fetchTags().catchError((e) {
+        if (kDebugMode) print('[Forum] fetchTags 失敗: $e');
+        return <ForumTagOption>[];
+      }),
     ]);
     if (!mounted) return;
     setState(() {

diff --git a/lib/screens/forum/forum_verification_sheet.dart b/lib/screens/forum/forum_verification_sheet.dart
@@ -1,5 +1,6 @@
 // 論壇學校驗證狀態說明
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
@@ -14,7 +15,9 @@ Future<void> showForumVerificationSheet(
   if (VocPassAuthService.instance.isLoggedIn) {
     try {
       await VocPassAuthService.instance.refreshMe();
-    } catch (_) {}
+    } catch (e) {
+      if (kDebugMode) print('[ForumVerification] 刷新用戶資料失敗: $e');
+    }
   }
   if (!context.mounted) return;
   await showModalBottomSheet<void>(

diff --git a/lib/screens/home_screen.dart b/lib/screens/home_screen.dart
@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
@@ -52,6 +53,7 @@ class _HomeScreenState extends State<HomeScreen> {
         });
       }
     } catch (e) {
+      if (kDebugMode) print('[Home] 獎懲資料載入失敗: $e');
       setState(() {
         _error = '資料載入失敗';
         _isLoading = false;

diff --git a/lib/screens/restaurant_screen.dart b/lib/screens/restaurant_screen.dart
@@ -1,5 +1,7 @@
 import 'dart:math';
 
+import 'package:flutter/foundation.dart';
+
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 import 'package:url_launcher/url_launcher.dart';
@@ -351,6 +353,7 @@ class _RestaurantDetailScreenState extends State<RestaurantDetailScreen> {
   bool _isLoading = false;
   bool _isLoadingMenu = false;
   String? _evalError;
+  String? _menuError;
 
   double? get _averageScore {
     if (_evaluations.isEmpty) return null;
@@ -385,9 +388,10 @@ class _RestaurantDetailScreenState extends State<RestaurantDetailScreen> {
       final list = await api.fetchRestaurantMenu(widget.restaurant.id);
       if (!mounted) return;
       setState(() { _menuItems = list; _isLoadingMenu = false; });
-    } catch (_) {
+    } catch (e) {
+      if (kDebugMode) print('[Restaurant] 菜單載入失敗: $e');
       if (!mounted) return;
-      setState(() => _isLoadingMenu = false);
+      setState(() { _menuError = e.toString(); _isLoadingMenu = false; });
     }
   }
 
@@ -565,6 +569,11 @@ class _RestaurantDetailScreenState extends State<RestaurantDetailScreen> {
                 padding: EdgeInsets.all(16),
                 child: CircularProgressIndicator(),
               ))
+            else if (_menuError != null)
+              Padding(
+                padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+                child: Text('菜單載入失敗', style: TextStyle(color: Colors.red[400])),
+              )
             else if (_menuItems.isEmpty)
               const Padding(
                 padding: EdgeInsets.symmetric(horizontal: 16, vertical: 8),

diff --git a/lib/screens/score_screen.dart b/lib/screens/score_screen.dart
@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
@@ -51,7 +52,8 @@ class _ScoreScreenState extends State<ScoreScreen> {
           _isLoading = false;
         });
       }
-    } catch (_) {
+    } catch (e) {
+      if (kDebugMode) print('[Score] 成績資料載入失敗: $e');
       setState(() {
         _error = '成績資料載入失敗';
         _isLoading = false;

diff --git a/lib/screens/w2m/w2m_result_screen.dart b/lib/screens/w2m/w2m_result_screen.dart
@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:provider/provider.dart';
@@ -667,10 +668,11 @@ class _W2MEditSheetState extends State<_W2MEditSheet> {
     _selectedDates = widget.event.dates.map((s) {
       try {
         return DateTime.parse(s);
-      } catch (_) {
-        return DateTime.now();
+      } catch (e) {
+        if (kDebugMode) print('[W2M] 無法解析日期 "$s": $e');
+        return null;
       }
-    }).toSet();
+    }).whereType<DateTime>().toSet();
   }
 
   @override

diff --git a/lib/services/api_service.dart b/lib/services/api_service.dart
@@ -514,7 +514,8 @@ class ApiService extends ChangeNotifier {
     Map<String, CourseInfo>? curriculum;
     try {
       curriculum = await curriculumFuture;
-    } catch (_) {
+    } catch (e) {
+      if (kDebugMode) print('[ApiService] 課表載入失敗（缺曠頁面仍可運作）: $e');
       curriculum = null;
     }
 

diff --git a/lib/services/forum_service.dart b/lib/services/forum_service.dart
@@ -131,7 +131,9 @@ class ForumService {
       if (data is Map) {
         return ForumAdminInfo.fromJson(data.cast<String, dynamic>());
       }
-    } catch (_) {}
+    } catch (e) {
+      if (kDebugMode) print('[Forum] fetchAdminInfo 失敗: $e');
+    }
     return null;
   }
 

diff --git a/lib/services/vocpass_auth_service.dart b/lib/services/vocpass_auth_service.dart
@@ -56,12 +56,14 @@ class VocPassAuthService extends ChangeNotifier {
     } catch (e) {
       await _saveToken(null);
       if (kDebugMode) print('[VocPassAuth] 取得使用者資料失敗: $e');
+      rethrow;
     }
   }
 
-  // Restore session on app start
-  Future<void> restoreSession() async {
-    if (_authToken == null || _authToken!.isEmpty) return;
+  // Restore session on app start.
+  // Returns true if session was restored, false if token was invalid/expired.
+  Future<bool> restoreSession() async {
+    if (_authToken == null || _authToken!.isEmpty) return false;
     try {
       final user = await fetchMe();
       currentUser = user;
@@ -71,9 +73,11 @@ class VocPassAuthService extends ChangeNotifier {
       }
       notifyListeners();
       if (kDebugMode) print('[VocPassAuth] 已恢復 session: ${user.displayName}');
+      return true;
     } catch (e) {
       await _saveToken(null);
       if (kDebugMode) print('[VocPassAuth] Session 已失效: $e');
+      return false;
     }
   }