feat(wip): Update entities and adopt a proper repository workflow for trip "obtention"

frontend/lib/presentation/providers/core_providers.dart

@@ -0,0 +1,49 @@
+import 'package:anyway/core/dio_client.dart';
+import 'package:anyway/data/repositories/local_onboarding_repository.dart';
+import 'package:anyway/domain/repositories/onboarding_repository.dart';
+import 'package:anyway/domain/repositories/trip_repository.dart';
+import 'package:anyway/data/repositories/backend_trip_repository.dart';
+import 'package:anyway/data/datasources/trip_remote_datasource.dart';
+import 'package:anyway/data/repositories/preferences_repository_impl.dart';
+import 'package:anyway/domain/repositories/preferences_repository.dart';
+import 'dart:io';
+
+import 'package:dio/dio.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+/// Provide a configured Dio instance (used by data layer)
+final dioProvider = Provider<Dio>((ref) {
+  // baseUrl can be configured via environment; use a sensible default
+  return Dio(BaseOptions(
+    baseUrl: 'https://anyway.anydev.info',
+    connectTimeout: const Duration(seconds: 5),
+    receiveTimeout: const Duration(seconds: 120),
+    headers: {
+      HttpHeaders.acceptHeader: 'application/json',
+      HttpHeaders.contentTypeHeader: 'application/json',
+    },
+  ));
+});
+
+/// Provide a simple wrapper client if needed elsewhere
+final dioClientProvider = Provider<DioClient>((ref) {
+  final dio = ref.read(dioProvider);
+  return DioClient(baseUrl: dio.options.baseUrl);
+});
+
+/// Onboarding repository backed by SharedPreferences
+final onboardingRepositoryProvider = Provider<OnboardingRepository>((ref) {
+  return LocalOnboardingRepository();
+});
+
+/// Preferences repository (local persistence)
+final preferencesRepositoryProvider = Provider<PreferencesRepository>((ref) {
+  return PreferencesRepositoryImpl();
+});
+
+/// Trip repository backed by the backend
+final tripRepositoryProvider = Provider<TripRepository>((ref) {
+  final dio = ref.read(dioProvider);
+  final remote = TripRemoteDataSourceImpl(dio: dio);
+  return BackendTripRepository(remote: remote);
+});

frontend/lib/presentation/providers/landmark_providers.dart

@@ -0,0 +1,16 @@
+import 'package:anyway/domain/entities/landmark.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+class IntermediateLandmarksNotifier extends Notifier<List<Landmark>> {
+    @override
+    List<Landmark> build() => [];
+
+    void setLandmarks(List<Landmark> landmarks) {
+        state = List.unmodifiable(landmarks);
+    }
+
+    void clear() => state = [];
+}
+
+final intermediateLandmarksProvider =
+        NotifierProvider<IntermediateLandmarksNotifier, List<Landmark>>(IntermediateLandmarksNotifier.new);

frontend/lib/presentation/providers/onboarding_state_provider.dart

@@ -1,9 +1,10 @@
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:shared_preferences/shared_preferences.dart';
+import 'package:anyway/domain/repositories/onboarding_repository.dart';
+import 'package:anyway/presentation/providers/core_providers.dart';
 
 final onboardingStateProvider = FutureProvider<bool>((ref) async {
-  final prefs = await SharedPreferences.getInstance();
-  return prefs.getBool('onboardingCompleted') ?? false;
+  final repo = ref.watch(onboardingRepositoryProvider);
+  return repo.isOnboarded();
 });
 
 
@@ -16,9 +17,10 @@ class OnboardingController {
   OnboardingController(this.ref);
 
   Future<void> setOnboarded(bool value) async {
-    final prefs = await SharedPreferences.getInstance();
-    await prefs.setBool('onboardingCompleted', value);
+    final repo = ref.read(onboardingRepositoryProvider);
+    await repo.setOnboarded(value);
     // refresh the read provider so UI updates
     ref.invalidate(onboardingStateProvider);
   }
 }
+

frontend/lib/presentation/providers/trip_provider.dart

@@ -1,6 +1,16 @@
-// import 'package:anyway/data/repositories/trip_repository.dart';
-// import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:anyway/domain/entities/preferences.dart';
+import 'package:anyway/domain/entities/trip.dart';
+import 'package:anyway/presentation/providers/landmark_providers.dart';
 
-// final weatherRepositoryProvider = Provider<TripRepository>((ref) {
-//   return TripRepositoryImpl(???);
-// });
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:anyway/presentation/providers/core_providers.dart';
+
+// Provides a function that creates a trip given preferences.
+final createTripProvider = Provider<Future<Trip> Function(Preferences)>((ref) {
+	return (Preferences prefs) async {
+		final repo = ref.read(tripRepositoryProvider);
+		final landmarks = await repo.searchLandmarks(prefs);
+		ref.read(intermediateLandmarksProvider.notifier).setLandmarks(landmarks);
+		return repo.getTrip(preferences: prefs, landmarks: landmarks);
+	};
+});