sort and filter added to tenders web

lib/view_models/tenders_view_model.dart

@@ -1,11 +1,13 @@
 import 'dart:developer';
 
 import 'package:flutter/material.dart';
+import 'package:intl/intl.dart';
 import 'package:tm_app/core/utils/device_utils.dart';
 import 'package:tm_app/data/repositories/tenders_repository.dart';
 import 'package:tm_app/data/services/model/feedback_data/feedback_data.dart';
 import 'package:tm_app/data/services/model/feedback_response/feedback_response.dart';
 import 'package:tm_app/data/services/model/tenders/tenders_response/tenders_response.dart';
+import 'package:tm_app/views/tenders/strings/tenders_strings.dart';
 
 import '../core/utils/result.dart';
 import 'home_view_model.dart';
@@ -47,6 +49,88 @@ class TendersViewModel with ChangeNotifier {
 
   bool get hasMoreData => _hasMoreData;
 
+  // Filter States
+  DateTimeRange? selectedDateRange;
+  String selectedStatus = 'All';
+  String selectedSort = '';
+  String sortBy = '';
+  String sortOrder = '';
+  final _fmt = DateFormat('yyyy/MM/dd');
+
+  String get startDateFormatted =>
+      selectedDateRange?.start != null
+          ? _fmt.format(selectedDateRange!.start)
+          : 'YYYY/MM/DD';
+
+  String get endDateFormatted =>
+      selectedDateRange?.end != null
+          ? _fmt.format(selectedDateRange!.end)
+          : 'YYYY/MM/DD';
+
+  String get startDateUnix =>
+      selectedDateRange?.start != null
+          ? (selectedDateRange!.start.millisecondsSinceEpoch ~/ 1000).toString()
+          : '';
+
+  String get endDateUnix =>
+      selectedDateRange?.end != null
+          ? (selectedDateRange!.end.millisecondsSinceEpoch ~/ 1000).toString()
+          : '';
+
+  // --- Filter Actions ---
+  void setDateRange(DateTimeRange? range) {
+    selectedDateRange = range;
+    notifyListeners();
+  }
+
+  void setStatus(String status) {
+    // Clear data when status changes
+    _clearAllData();
+    selectedStatus = status;
+    currentPage = 1;
+    notifyListeners();
+  }
+
+  void setSort(String sort) {
+    // Clear data when status changes
+    _clearAllData();
+    selectedSort = sort;
+    if (sort == TendersStrings.lessBudget) {
+      sortBy = 'estimated_value';
+      sortOrder = 'asc';
+    } else if (sort == TendersStrings.moreBudget) {
+      sortBy = 'estimated_value';
+      sortOrder = 'desc';
+    } else if (sort == TendersStrings.minimumTime) {
+      sortBy = 'submission_deadline';
+      sortOrder = 'asc';
+    } else if (sort == TendersStrings.mostOfTheTime) {
+      sortBy = 'submission_deadline';
+      sortOrder = 'desc';
+    }
+    currentPage = 1;
+    notifyListeners();
+  }
+
+  void _clearAllData() {
+    _tendersResponse = null;
+    _errorMessage = null;
+    _currentOffset = 0;
+    _hasMoreData = true;
+    currentPage = 1;
+    sortBy = '';
+    sortOrder = '';
+    selectedSort = '';
+    selectedStatus = '';
+
+    notifyListeners();
+  }
+
+  void init(BuildContext context) async {
+    clearAll();
+    await getTenders(context: context);
+  }
+
   /// Get feedback for a specific tender
   FeedbackData? getFeedbackForTender(String tenderId) {
     try {
@@ -61,10 +145,13 @@ class TendersViewModel with ChangeNotifier {
     return feedbacks.any((f) => f.tender == tenderId);
   }
 
-  Future<void> getTenders({String? query, BuildContext? context}) async {
+  Future<void> getTenders({
+    required BuildContext context,
+    String? query,
+  }) async {
     _isLoading = true;
     notifyListeners();
-    if (context != null && DeviceUtils.isDesktop(context)) {
+    if (DeviceUtils.isDesktop(context)) {
       await getTendersDesktop(query: query);
     } else {
       await getTendersMobile(query: query);
@@ -72,7 +159,7 @@ class TendersViewModel with ChangeNotifier {
   }
 
   Future<void> getTendersMobile({String? query}) async {
-    clearAll(); // Clear all data before fetching new tenders
+    // Clear all data before fetching new tenders
 
     _currentOffset = 0;
     _hasMoreData = true;
@@ -82,6 +169,8 @@ class TendersViewModel with ChangeNotifier {
       limit: _pageSize,
       offset: _currentOffset,
       query: query,
+      sortBy: '',
+      sortOrder: '',
     );
     switch (result) {
       case Ok<TendersResponse>():
@@ -111,9 +200,16 @@ class TendersViewModel with ChangeNotifier {
     notifyListeners();
   }
 
-  Future<void> getTendersDesktop({String? query}) async {
-    clearAll(); // Clear all data before fetching new tenders
-
+  Future<void> getTendersDesktop({
+    String? query,
+    String? sortBy,
+    String? sortOrder,
+    String? publicationDateFrom,
+    String? publicationDateTo,
+  }) async {
+    // Clear all data before fetching new tenders
+    _isLoading = true;
+    notifyListeners();
     _currentOffset = 0;
     _hasMoreData = true;
     _searchQuery = query;
@@ -122,6 +218,10 @@ class TendersViewModel with ChangeNotifier {
       limit: _pageSize,
       offset: _currentOffset,
       query: query,
+      sortBy: sortBy ?? '',
+      sortOrder: sortOrder ?? '',
+      publicationDateFrom: publicationDateFrom ?? '',
+      publicationDateTo: publicationDateTo ?? '',
     );
     switch (result) {
       case Ok<TendersResponse>():
@@ -166,6 +266,8 @@ class TendersViewModel with ChangeNotifier {
       limit: _pageSize,
       offset: _currentOffset,
       query: _searchQuery,
+      sortBy: sortBy,
+      sortOrder: sortOrder,
     );
 
     switch (result) {
@@ -356,13 +458,24 @@ class TendersViewModel with ChangeNotifier {
     notifyListeners();
   }
 
+  Future<void> callWithSortAndStatus() async {
+    await getTendersDesktop(
+      sortBy: sortBy,
+      sortOrder: sortOrder,
+      publicationDateFrom: startDateUnix,
+      publicationDateTo: endDateUnix,
+    );
+  }
+
   /// Search tenders with query
   Future<void> searchTenders(String query) async {
-    if (query.trim().isEmpty) {
-      await getTendersDesktop();
-    } else {
-      await getTendersDesktop(query: query.trim());
-    }
+    await getTendersDesktop(
+      query: query.trim(),
+      sortBy: sortBy,
+      sortOrder: sortOrder,
+      publicationDateFrom: startDateUnix,
+      publicationDateTo: endDateUnix,
+    );
   }
 
   /// Clear all data (tenders, feedbacks, and approvals)
@@ -370,6 +483,11 @@ class TendersViewModel with ChangeNotifier {
     clearTenders();
     clearFeedbacks();
     _searchQuery = null;
+    selectedSort = '';
+    selectedStatus = '';
+    selectedDateRange = null;
+    sortBy = '';
+    sortOrder = '';
     notifyListeners();
   }
 
@@ -389,6 +507,8 @@ class TendersViewModel with ChangeNotifier {
       limit: _pageSize,
       offset: _currentOffset,
       query: _searchQuery,
+      sortBy: sortBy,
+      sortOrder: sortOrder,
     );
 
     switch (result) {