class TransactionItem {
  final int id;
  final String label;
  final double amount;
  final String type;
  final int accountId;
  final int? targetAccountId;
  final int? categoryId;
  final int? provisionId;
  final DateTime date;
  final String? note;
  final bool isPending;
  final int? localOperationId;

  TransactionItem({
    required this.id,
    required this.label,
    required this.amount,
    required this.type,
    required this.accountId,
    required this.date,
    this.targetAccountId,
    this.categoryId,
    this.provisionId,
    this.note,
    this.isPending = false,
    this.localOperationId,
  });

  factory TransactionItem.fromJson(Map<String, dynamic> json) {
    return TransactionItem(
      id: json['id'] as int,
      label: json['label'] as String,
      amount: (json['amount'] as num? ?? 0).toDouble(),
      type: json['type'] as String,
      accountId: json['account_id'] as int,
      targetAccountId: json['target_account_id'] as int?,
      categoryId: json['category_id'] as int?,
      provisionId: json['provision_id'] as int?,
      date: DateTime.parse(json['date'] as String),
      note: json['note'] as String?,
      isPending: json['is_pending'] is int
          ? (json['is_pending'] as int) == 1
          : json['is_pending'] as bool? ?? false,
      localOperationId: json['local_operation_id'] as int?,
    );
  }

  factory TransactionItem.fromPending({
    required int localOperationId,
    required Map<String, dynamic> payload,
  }) {
    return TransactionItem(
      id: -localOperationId,
      label: payload['label'] as String? ?? 'Opération mobile',
      amount: (payload['amount'] as num? ?? 0).toDouble(),
      type: payload['type'] as String? ?? 'expense',
      accountId: payload['account_id'] as int,
      targetAccountId: payload['target_account_id'] as int?,
      categoryId: payload['category_id'] as int?,
      provisionId: payload['provision_id'] as int?,
      date: DateTime.tryParse(payload['date'] as String? ?? '') ?? DateTime.now(),
      note: payload['note'] as String?,
      isPending: true,
      localOperationId: localOperationId,
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'label': label,
      'amount': amount,
      'type': type,
      'account_id': accountId,
      'target_account_id': targetAccountId,
      'category_id': categoryId,
      'provision_id': provisionId,
      'date': date.toIso8601String(),
      'note': note,
      'is_pending': isPending,
      'local_operation_id': localOperationId,
    };
  }

  Map<String, dynamic> toDbMap() {
    return {
      'id': id,
      'label': label,
      'amount': amount,
      'type': type,
      'account_id': accountId,
      'target_account_id': targetAccountId,
      'category_id': categoryId,
      'provision_id': provisionId,
      'date': date.toIso8601String(),
      'note': note,
      'is_pending': isPending ? 1 : 0,
      'local_operation_id': localOperationId,
      'updated_at': DateTime.now().toIso8601String(),
    };
  }

  factory TransactionItem.fromDbMap(Map<String, dynamic> map) {
    return TransactionItem(
      id: map['id'] as int,
      label: map['label'] as String,
      amount: (map['amount'] as num? ?? 0).toDouble(),
      type: map['type'] as String,
      accountId: map['account_id'] as int,
      targetAccountId: map['target_account_id'] as int?,
      categoryId: map['category_id'] as int?,
      provisionId: map['provision_id'] as int?,
      date: DateTime.parse(map['date'] as String),
      note: map['note'] as String?,
      isPending: (map['is_pending'] as int? ?? 0) == 1,
      localOperationId: map['local_operation_id'] as int?,
    );
  }
}