enum MealType { breakfast, lunch, dinner, snack }

enum MealSource { manual, photoAi }

enum MealSyncStatus { pending, synced, failed }

class MealEntry {
  MealEntry({
    required this.id,
    required this.name,
    required this.mealType,
    required this.calories,
    required this.proteinGrams,
    required this.carbohydrateGrams,
    required this.fatGrams,
    required this.consumedAt,
    this.source = MealSource.manual,
    this.notes = '',
    this.syncStatus = MealSyncStatus.pending,
  });

  final String id;
  final String name;
  final MealType mealType;
  final double calories;
  final double proteinGrams;
  final double carbohydrateGrams;
  final double fatGrams;
  final DateTime consumedAt;
  final MealSource source;
  final String notes;
  MealSyncStatus syncStatus;

  Map<String, dynamic> toMap() => {
        'id': id,
        'name': name,
        'meal_type': mealType.name,
        'calories': calories,
        'protein_grams': proteinGrams,
        'carbohydrate_grams': carbohydrateGrams,
        'fat_grams': fatGrams,
        'consumed_at': consumedAt.toUtc().toIso8601String(),
        'source': source == MealSource.photoAi ? 'photo_ai' : 'manual',
        'notes': notes,
        'sync_status': syncStatus.name,
      };

  Map<String, dynamic> toApiPayload() => {
        'client_meal_uuid': id,
        'name': name,
        'meal_type': mealType.name,
        'calories': calories,
        'protein_grams': proteinGrams,
        'carbohydrate_grams': carbohydrateGrams,
        'fat_grams': fatGrams,
        'consumed_at': consumedAt.toUtc().toIso8601String(),
        'source': source == MealSource.photoAi ? 'photo_ai' : 'manual',
        'notes': notes,
      };

  factory MealEntry.fromMap(Map<String, dynamic> map) => MealEntry(
        id: map['id'] as String,
        name: map['name'] as String,
        mealType: MealType.values.firstWhere(
          (value) => value.name == map['meal_type'],
          orElse: () => MealType.snack,
        ),
        calories: _asDouble(map['calories']),
        proteinGrams: _asDouble(map['protein_grams']),
        carbohydrateGrams: _asDouble(map['carbohydrate_grams']),
        fatGrams: _asDouble(map['fat_grams']),
        consumedAt: DateTime.parse(map['consumed_at'] as String).toLocal(),
        source: map['source'] == 'photo_ai' || map['source'] == 'photoAi'
            ? MealSource.photoAi
            : MealSource.manual,
        notes: map['notes'] as String? ?? '',
        syncStatus: MealSyncStatus.values.firstWhere(
          (value) => value.name == map['sync_status'],
          orElse: () => MealSyncStatus.pending,
        ),
      );
}

double _asDouble(dynamic value) => value is num ? value.toDouble() : 0;