import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../domain/plant_location.dart';

/// In-Memory-Stellplätze mit Demo-Daten – wird später durch Firestore ersetzt.
class LocationsNotifier extends Notifier<List<PlantLocation>> {
  @override
  List<PlantLocation> build() {
    return const [
      PlantLocation(id: 'loc-wohnzimmer', name: 'Wohnzimmer'),
      PlantLocation(id: 'loc-schlafzimmer', name: 'Schlafzimmer'),
      PlantLocation(id: 'loc-kueche', name: 'Küche'),
    ];
  }

  void addLocation(String name) {
    final id = 'loc-${DateTime.now().millisecondsSinceEpoch}';
    state = [...state, PlantLocation(id: id, name: name)];
  }
}

final locationsProvider =
    NotifierProvider<LocationsNotifier, List<PlantLocation>>(
        LocationsNotifier.new);

final locationByIdProvider =
    Provider.family<PlantLocation?, String?>((ref, id) {
  if (id == null) return null;
  final locations = ref.watch(locationsProvider);
  for (final location in locations) {
    if (location.id == id) return location;
  }
  return null;
});