show message when there is error in submit or remove approvals

lib/core/network/app_exceptions.dart

@@ -21,7 +21,7 @@ class FetchDataException extends AppException {
   FetchDataException([String? message, int? statusCode, originalError])
     : super(
         message ?? 'Error During Communication: ',
-        'Network Error',
+        'Network Error : ',
         statusCode,
         originalError,
       );
@@ -31,7 +31,7 @@ class AuthenticationException extends AppException {
   AuthenticationException([String? message, int? statusCode, originalError])
     : super(
         message ?? 'Authentication Failed.',
-        'Auth Error: ',
+        'Auth Error : ',
         statusCode,
         originalError,
       );
@@ -41,7 +41,7 @@ class NetworkConnectionException extends AppException {
   NetworkConnectionException([String? message, originalError])
     : super(
         message ?? 'No internet connection available.',
-        'Connection Error: ',
+        'Connection Error : ',
         null,
         originalError,
       );
@@ -51,7 +51,7 @@ class TimeoutException extends AppException {
   TimeoutException([String? message, originalError])
     : super(
         message ?? 'Request timed out.',
-        'Timeout Error: ',
+        'Timeout Error : ',
         null,
         originalError,
       );
@@ -61,7 +61,7 @@ class ServerException extends AppException {
   ServerException([String? message, int? statusCode, originalError])
     : super(
         message ?? 'Server error occurred.',
-        'Server Error: ',
+        'Server Error : ',
         statusCode,
         originalError,
       );
@@ -71,7 +71,7 @@ class BadRequestException extends AppException {
   BadRequestException([String? message, int? statusCode, originalError])
     : super(
         message ?? 'Bad request.',
-        'Bad Request Error: ',
+        'Bad Request Error : ',
         statusCode,
         originalError,
       );
@@ -81,7 +81,7 @@ class NotFoundException extends AppException {
   NotFoundException([String? message, int? statusCode, originalError])
     : super(
         message ?? 'Resource not found.',
-        'Not Found Error: ',
+        'Not Found Error : ',
         statusCode,
         originalError,
       );
@@ -91,7 +91,7 @@ class ForbiddenException extends AppException {
   ForbiddenException([String? message, int? statusCode, originalError])
     : super(
         message ?? 'Access forbidden.',
-        'Forbidden Error: ',
+        'Forbidden Error : ',
         statusCode,
         originalError,
       );
@@ -101,7 +101,7 @@ class RateLimitException extends AppException {
   RateLimitException([String? message, int? statusCode, originalError])
     : super(
         message ?? 'Rate limit exceeded.',
-        'Rate Limit Error: ',
+        'Rate Limit Error : ',
         statusCode,
         originalError,
       );

lib/data/services/liked_tenders_service.dart

@@ -6,22 +6,22 @@ import '../../../core/network/network_manager.dart';
 
 class LikedTendersService {
   LikedTendersService({required NetworkManager networkManager})
-      : _networkManager = networkManager;
+    : _networkManager = networkManager;
 
   final NetworkManager _networkManager;
 
-Future<Result<LikedTendersResponse>> getLikedTenders({
+  Future<Result<LikedTendersResponse>> getLikedTenders({
-  int offset = 0,
+    int offset = 0,
-  int limit = 20,
+    int limit = 20,
-}) async {
+  }) async {
-  final uri = '${LikedTendersApi.likedTenders}&limit=$limit&offset=$offset';
+    final uri = '${LikedTendersApi.likedTenders}&limit=$limit&offset=$offset';
 
-  final result = await _networkManager.makeRequest(
+    final result = await _networkManager.makeRequest(
-    uri,
+      uri,
-    (json) => LikedTendersResponse.fromJson(json),
+      (json) => LikedTendersResponse.fromJson(json),
-    method: 'GET',
+      method: 'GET',
-  );
+    );
 
-  return result;
+    return result;
-}
+  }
 }

lib/view_models/liked_tenders_view_model.dart

@@ -55,6 +55,11 @@ class LikedTendersViewModel with ChangeNotifier {
     _homeViewModel.init();
   }
 
+  void clearApprovalErrorMessage() {
+    _errorMessage = null;
+    notifyListeners();
+  }
+
   Future<void> getLikedTenders({bool reset = false}) async {
     if (!reset && (isLoadingMore || !hasMore)) {
       return;
@@ -303,7 +308,7 @@ class LikedTendersViewModel with ChangeNotifier {
         approvalStatus = false;
         break;
     }
-
+    approvalStatus = false;
     _isSubmitApprovalLoading = false;
     notifyListeners();
   }
@@ -370,6 +375,7 @@ class LikedTendersViewModel with ChangeNotifier {
         break;
     }
 
+    approvalStatus = false;
     _isRejectApprovalLoading = false;
     notifyListeners();
   }

lib/views/liked_tenders/pages/liked_tenders_desktop_page.dart

@@ -24,9 +24,26 @@ class _LikedTendersDesktopPageState extends State<LikedTendersDesktopPage> {
   @override
   void initState() {
     viewModel = context.read<LikedTendersViewModel>();
+    viewModel.addListener(_viewModelListener);
     super.initState();
   }
 
+  void _viewModelListener() {
+    if (viewModel.approvalErrorMessage?.isNotEmpty == true &&
+        viewModel.approvalStatus == false) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(viewModel.approvalErrorMessage!)));
+      viewModel.clearApprovalErrorMessage();
+    }
+  }
+
+  @override
+  void dispose() {
+    viewModel.removeListener(_viewModelListener);
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return PopScope(

lib/views/liked_tenders/pages/liked_tenders_mobile_page.dart

@@ -27,6 +27,18 @@ class _LikedTendersMobilePageState extends State<LikedTendersMobilePage> {
     viewModel = context.read<LikedTendersViewModel>();
     super.initState();
     _scrollController = ScrollController()..addListener(_onScroll);
+    viewModel.addListener(_viewModelListener);
+  }
+
+  void _viewModelListener() {
+    if (mounted &&
+        viewModel.approvalErrorMessage?.isNotEmpty == true &&
+        viewModel.approvalStatus == false) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(viewModel.approvalErrorMessage!)));
+      viewModel.clearApprovalErrorMessage();
+    }
   }
 
   void _onScroll() {
@@ -46,6 +58,7 @@ class _LikedTendersMobilePageState extends State<LikedTendersMobilePage> {
   void dispose() {
     _scrollController.removeListener(_onScroll);
     _scrollController.dispose();
+    viewModel.removeListener(_viewModelListener);
     super.dispose();
   }
 
@@ -94,75 +107,71 @@ class _LikedTendersMobilePageState extends State<LikedTendersMobilePage> {
                   final itemCount =
                       feedback.length + (viewModel.isLoadingMore ? 1 : 0);
 
-                  return RefreshIndicator(
+                  return ListView.builder(
-                    onRefresh: () async {
+                    controller: _scrollController,
-                      await viewModel.getLikedTenders(reset: true);
+                    padding: EdgeInsets.symmetric(
-                    },
+                      horizontal: 24.0.w(),
-                    child: ListView.builder(
+                      vertical: 15.0.h(),
-                      controller: _scrollController,
+                    ),
-                      padding: EdgeInsets.symmetric(
+                    itemCount: itemCount,
-                        horizontal: 24.0.w(),
+                    itemBuilder: (context, index) {
-                        vertical: 15.0.h(),
+                      if (index < feedback.length) {
-                      ),
+                        final item = feedback[index];
-                      itemCount: itemCount,
+                        TenderApprovalsData? approval;
-                      itemBuilder: (context, index) {
+                        bool hasApproval = viewModel.hasTenderApprovalForTender(
-                        if (index < feedback.length) {
+                          item.tenderId!,
-                          final item = feedback[index];
+                        );
-                          TenderApprovalsData? approval;
+                        if (hasApproval) {
-                          bool hasApproval = viewModel
+                          approval = viewModel.getApprovalStatusForTender(
-                              .hasTenderApprovalForTender(item.tenderId!);
+                            item.tenderId!,
-                          if (hasApproval) {
-                            approval = viewModel.getApprovalStatusForTender(
-                              item.tenderId!,
-                            );
-                          } else {
-                            approval = null;
-                          }
-
-                          return Padding(
-                            padding: EdgeInsets.only(bottom: 20.0.h()),
-                            child: Dismissible(
-                              key: ValueKey(item.tenderId ?? index),
-                              direction: DismissDirection.endToStart,
-                              background: Container(
-                                alignment: Alignment.centerRight,
-                                padding: EdgeInsets.symmetric(
-                                  horizontal: 20.0.w(),
-                                ),
-                                child: SvgPicture.asset(
-                                  AssetsManager.trash,
-                                  width: 32.0.w(),
-                                  height: 32.0.h(),
-                                ),
-                              ),
-                              onDismissed: (_) {
-                                if (item.tenderId != null) {
-                                  viewModel.removeTenderById(item.tenderId!);
-                                }
-                              },
-                              child: LikedListItem(
-                                tender: item.tender!,
-                                approval: approval,
-                              ),
-                            ),
                           );
                         } else {
-                          return Padding(
+                          approval = null;
-                            padding: EdgeInsets.symmetric(vertical: 20.0.h()),
+                        }
-                            child: Center(
+
-                              child: SizedBox(
+                        return Padding(
-                                width: 24.0.w(),
+                          padding: EdgeInsets.only(bottom: 20.0.h()),
-                                height: 24.0.h(),
+                          child: Dismissible(
-                                child: CircularProgressIndicator(
+                            key: ValueKey(item.tenderId ?? index),
-                                  color: AppColors.secondary50,
+                            direction: DismissDirection.endToStart,
-                                  strokeWidth: 2,
+                            background: Container(
-                                ),
+                              alignment: Alignment.centerRight,
+                              padding: EdgeInsets.symmetric(
+                                horizontal: 20.0.w(),
+                              ),
+                              child: SvgPicture.asset(
+                                AssetsManager.trash,
+                                width: 32.0.w(),
+                                height: 32.0.h(),
                               ),
                             ),
-                          );
+                            onDismissed: (_) {
-                        }
+                              if (item.tenderId != null) {
-                      },
+                                viewModel.removeTenderById(item.tenderId!);
-                    ),
+                              }
+                            },
+                            child: LikedListItem(
+                              tender: item.tender!,
+                              approval: approval,
+                            ),
+                          ),
+                        );
+                      } else {
+                        return Padding(
+                          padding: EdgeInsets.symmetric(vertical: 20.0.h()),
+                          child: Center(
+                            child: SizedBox(
+                              width: 24.0.w(),
+                              height: 24.0.h(),
+                              child: CircularProgressIndicator(
+                                color: AppColors.secondary50,
+                                strokeWidth: 2,
+                              ),
+                            ),
+                          ),
+                        );
+                      }
+                    },
                   );
                 },
               ),

lib/views/liked_tenders/pages/liked_tenders_tablet_page.dart

@@ -26,6 +26,23 @@ class _LikedTendersTabletPageState extends State<LikedTendersTabletPage> {
   void initState() {
     viewModel = context.read<LikedTendersViewModel>();
     super.initState();
+    viewModel.addListener(_viewModelListener);
+  }
+
+  void _viewModelListener() {
+    if (viewModel.approvalErrorMessage?.isNotEmpty == true &&
+        viewModel.approvalStatus == false) {
+      ScaffoldMessenger.of(
+        context,
+      ).showSnackBar(SnackBar(content: Text(viewModel.approvalErrorMessage!)));
+      viewModel.clearApprovalErrorMessage();
+    }
+  }
+
+  @override
+  void dispose() {
+    viewModel.removeListener(_viewModelListener);
+    super.dispose();
   }
 
   @override