class Customer {
  final String id;
  final String firstName;
  final String lastName;
  final String? email;
  final String? phone;
  final String licenseStatus;
  final bool isFlagged;
  final String? flagReason;
  final DateTime? dateOfBirth;
  final String? nationality;
  final DateTime createdAt;

  const Customer({
    required this.id,
    required this.firstName,
    required this.lastName,
    this.email,
    this.phone,
    required this.licenseStatus,
    required this.isFlagged,
    this.flagReason,
    this.dateOfBirth,
    this.nationality,
    required this.createdAt,
  });

  String get fullName => '$firstName $lastName';

  factory Customer.fromJson(Map<String, dynamic> json) => Customer(
        id: json['id'] as String,
        firstName: json['firstName'] as String,
        lastName: json['lastName'] as String,
        email: json['email'] as String?,
        phone: json['phone'] as String?,
        licenseStatus: json['licenseStatus'] as String? ?? 'PENDING',
        isFlagged: json['isFlagged'] as bool? ?? false,
        flagReason: json['flagReason'] as String?,
        dateOfBirth: json['dateOfBirth'] != null
            ? DateTime.tryParse(json['dateOfBirth'] as String)
            : null,
        nationality: json['nationality'] as String?,
        createdAt: DateTime.parse(
            json['createdAt'] as String? ?? DateTime.now().toIso8601String()),
      );
}

class CustomerListResponse {
  final List<Customer> data;
  final int total;
  final int page;
  final int pageSize;

  const CustomerListResponse({
    required this.data,
    required this.total,
    required this.page,
    required this.pageSize,
  });

  factory CustomerListResponse.fromApi(dynamic json) {
    if (json is List<dynamic>) {
      final customers = json
          .map((e) => Customer.fromJson(e as Map<String, dynamic>))
          .toList();
      return CustomerListResponse(
        data: customers,
        total: customers.length,
        page: 1,
        pageSize: customers.length,
      );
    }
    return CustomerListResponse.fromJson(json as Map<String, dynamic>);
  }

  factory CustomerListResponse.fromJson(Map<String, dynamic> json) =>
      CustomerListResponse(
        data: ((json['data'] ?? const <dynamic>[]) as List<dynamic>)
            .map((e) => Customer.fromJson(e as Map<String, dynamic>))
            .toList(),
        total: json['total'] as int? ?? ((json['data'] as List<dynamic>?)?.length ?? 0),
        page: json['page'] as int? ?? 1,
        pageSize: json['pageSize'] as int? ?? 20,
      );
}