import 'package:isar/isar.dart';

import '../../../core/constants/app_defaults.dart';

part 'app_config.g.dart';

enum EntitlementSource {
  none,
  purchase,
  restore,
}

@collection
class AppConfig {
  AppConfig();

  Id id = AppDefaults.singletonId;

  @Index(unique: true, replace: true)
  late String configKey;

  @Index(type: IndexType.value)
  late DateTime updatedAt;

  late DateTime createdAt;
  int freeTrialLimit = AppDefaults.defaultFreeTrialLimit;
  int usedTrialCount = 0;
  bool isVipUnlocked = false;
  DateTime? vipUnlockedAt;
  String? lastIapErrorMessage;

  @enumerated
  EntitlementSource entitlementSource = EntitlementSource.none;

  factory AppConfig.createDefault({DateTime? now}) {
    final current = now ?? DateTime.now();

    return AppConfig()
      ..configKey = 'local_app_config'
      ..createdAt = current
      ..updatedAt = current
      ..freeTrialLimit = AppDefaults.defaultFreeTrialLimit
      ..usedTrialCount = 0
      ..isVipUnlocked = false
      ..entitlementSource = EntitlementSource.none;
  }

  int get remainingTrialCount {
    final remaining = freeTrialLimit - usedTrialCount;
    return remaining > 0 ? remaining : 0;
  }

  bool get canStartScoring => isVipUnlocked || usedTrialCount < freeTrialLimit;

  AppConfig copyWith({
    int? freeTrialLimit,
    int? usedTrialCount,
    bool? isVipUnlocked,
    DateTime? vipUnlockedAt,
    String? lastIapErrorMessage,
    EntitlementSource? entitlementSource,
    DateTime? updatedAt,
  }) {
    return AppConfig()
      ..id = id
      ..configKey = configKey
      ..createdAt = createdAt
      ..updatedAt = updatedAt ?? DateTime.now()
      ..freeTrialLimit = freeTrialLimit ?? this.freeTrialLimit
      ..usedTrialCount = usedTrialCount ?? this.usedTrialCount
      ..isVipUnlocked = isVipUnlocked ?? this.isVipUnlocked
      ..vipUnlockedAt = vipUnlockedAt ?? this.vipUnlockedAt
      ..lastIapErrorMessage = lastIapErrorMessage ?? this.lastIapErrorMessage
      ..entitlementSource = entitlementSource ?? this.entitlementSource;
  }
}