Added notification logic and view api

2025-09-22 16:05:08 +03:30
parent 2e2718a92e
commit cfc61daf71
23 changed files with 1944 additions and 152 deletions
@@ -0,0 +1,132 @@
+import 'package:flutter/material.dart';
+import 'package:tm_app/core/utils/result.dart';
+import 'package:tm_app/data/repositories/notification_repository.dart';
+import 'package:tm_app/data/services/model/notification__response/notification_response_model.dart';
+
+class NotificationViewModel with ChangeNotifier {
+  final NotificationsRepository _repository;
+
+  NotificationViewModel({required NotificationsRepository repositoryViewModel})
+    : _repository = repositoryViewModel {
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      getNotifications();
+    });
+  }
+
+  bool _isLoading = false;
+  String? _errorMessage;
+  NotificationResponseModel? _notificationResponseModel;
+
+  int currentPage = 1;
+  static const int _pageSize = 10;
+  int _totalPages = 0;
+  bool _hasMoreData = true;
+
+  bool get isLoading => _isLoading;
+  String? get errorMessage => _errorMessage;
+  NotificationResponseModel? get notificationResponse =>
+      _notificationResponseModel;
+  bool get hasMoreData => _hasMoreData;
+  int get totalPages => _totalPages;
+
+  /// Fetch notifications
+Future<void> getNotifications({int page = 1, bool isMobile = false}) async {
+  _isLoading = true;
+  notifyListeners();
+
+  final int offset = _pageSize * page;
+
+  final result = await _repository.getNotifications(
+    limit: _pageSize,
+    offset: offset,
+  );
+
+  switch (result) {
+    case Ok<NotificationResponseModel>():
+      if (isMobile && page > 1) {
+        final oldNotifications =
+            _notificationResponseModel?.data?.notifications ?? [];
+
+        final newNotifications = result.value.data?.notifications ?? [];
+
+        _notificationResponseModel = result.value.copyWith(
+          data: result.value.data?.copyWith(
+            notifications: [...oldNotifications, ...newNotifications],
+          ),
+        );
+      } else {
+        _notificationResponseModel = result.value;
+      }
+
+      currentPage = page;
+      _hasMoreData =
+          (result.value.data?.notifications?.length ?? 0) >= _pageSize;
+      _totalPages = result.value.data?.meta?.pages ?? 1;
+      break;
+
+    case Error<NotificationResponseModel>():
+      _errorMessage = result.error.toString();
+      break;
+  }
+
+  _isLoading = false;
+  notifyListeners();
+}
+
+  /// Jump to page
+  Future<void> jumpToPage(int page) async {
+    if (_totalPages == 0 || page < 1 || page > _totalPages) {
+      return;
+    }
+    await getNotifications(page: page);
+  }
+
+  /// Mark all as read
+  Future<void> markAllAsRead() async {
+    _errorMessage = null;
+    notifyListeners();
+
+    final result = await _repository.markAllAsRead();
+
+    switch (result) {
+      case Ok<NotificationResponseModel>():
+        if (_notificationResponseModel?.data?.notifications != null) {
+          final updatedNotifications =
+              _notificationResponseModel!.data!.notifications!
+                  .map((n) => n.copyWith(seen: true))
+                  .toList();
+
+          _notificationResponseModel = _notificationResponseModel!.copyWith(
+            data: _notificationResponseModel!.data!.copyWith(
+              notifications: updatedNotifications,
+            ),
+          );
+        }
+        break;
+
+      case Error<NotificationResponseModel>():
+        _errorMessage = result.error.toString();
+        break;
+    }
+
+    notifyListeners();
+  }
+
+  String timeAgo(String dateTimeString) {
+    final createdAt = DateTime.parse(dateTimeString);
+    final now = DateTime.now();
+    final difference = now.difference(createdAt);
+
+    if (difference.inMinutes < 1) {
+      return 'Now';
+    } else if (difference.inMinutes < 60) {
+      return '${difference.inMinutes} Min ';
+    } else if (difference.inHours < 24) {
+      return '${difference.inHours} Hour ';
+    } else if (difference.inDays == 1) {
+      return 'Yesterday';
+    } else {
+      return '${difference.inDays} days ago';
+    }
+  }
+}