9b08b2896c
- Implement EmergencyService for handling emergency contacts per trip. - Create GuestFlagService to manage guest mode flags for trips. - Introduce NotificationService with local notification capabilities. - Add OfflineFlagService for managing offline caching flags. - Develop PackingService for shared packing lists per trip. - Implement ReminderService for managing reminders/to-dos per trip. - Create SosService for dispatching SOS events to a backend. - Add StorageService with album image upload functionality. - Implement TransportService for managing transport segments per trip. - Create TripChecklistService for storing and retrieving trip checklists. - Add TripDocumentService for persisting trip documents metadata. test: Add unit tests for new services - Implement tests for AlbumService, BudgetService, EmergencyService, GuestFlagService, PackingService, ReminderService, SosService, TransportService, TripChecklistService, and TripDocumentService. - Ensure tests cover adding, loading, deleting, and handling corrupted payloads for each service.
78 lines
2.7 KiB
Dart
78 lines
2.7 KiB
Dart
import 'package:shared_preferences/shared_preferences.dart';
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import 'package:travel_mate/models/checklist_item.dart';
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/// Service responsible for storing and retrieving per-trip checklists.
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///
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/// Persistence relies on `SharedPreferences` with one JSON string per trip
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/// key. All methods are resilient to corrupted payloads and return empty
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/// lists rather than throwing to keep the UI responsive.
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class TripChecklistService {
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/// Loads the checklist items for the given [tripId].
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///
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/// Returns an empty list if no data exists or if deserialization fails.
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Future<List<ChecklistItem>> loadChecklist(String tripId) async {
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final prefs = await SharedPreferences.getInstance();
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final raw = prefs.getString(_key(tripId));
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if (raw == null) {
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return const [];
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}
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try {
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return ChecklistItem.decodeList(raw);
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} catch (_) {
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// Corrupted payload: clear it to avoid persisting errors.
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await prefs.remove(_key(tripId));
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return const [];
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}
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}
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/// Persists the provided [items] list for [tripId].
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///
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/// This method overrides the previously stored list; use helpers like
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/// [addItem], [toggleItem], or [deleteItem] for incremental updates.
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Future<void> saveChecklist(String tripId, List<ChecklistItem> items) async {
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final prefs = await SharedPreferences.getInstance();
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await prefs.setString(_key(tripId), ChecklistItem.encodeList(items));
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}
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/// Adds a new [item] to the checklist for [tripId].
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///
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/// Items are appended in creation order; the updated list is persisted.
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Future<List<ChecklistItem>> addItem(String tripId, ChecklistItem item) async {
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final current = await loadChecklist(tripId);
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final updated = [...current, item];
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await saveChecklist(tripId, updated);
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return updated;
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}
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/// Toggles the completion state of the item matching [itemId].
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///
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/// Returns the updated list. If the item is not found, the list is
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/// returned unchanged to keep UI state consistent.
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Future<List<ChecklistItem>> toggleItem(String tripId, String itemId) async {
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final current = await loadChecklist(tripId);
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final updated = current
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.map((item) {
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if (item.id != itemId) {
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return item;
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}
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return item.copyWith(isDone: !item.isDone);
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})
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.toList(growable: false);
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await saveChecklist(tripId, updated);
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return updated;
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}
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/// Deletes the item matching [itemId] and persists the change.
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Future<List<ChecklistItem>> deleteItem(String tripId, String itemId) async {
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final current = await loadChecklist(tripId);
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final updated = current.where((item) => item.id != itemId).toList();
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await saveChecklist(tripId, updated);
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return updated;
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}
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String _key(String tripId) => 'checklist_$tripId';
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}
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