emergency/lib/models/country.dart

import 'emergency_number.dart';

/// Ein Land mit seinen landesspezifischen Notrufnummern.
class Country {
  const Country({
    required this.isoCode,
    required this.nameDe,
    required this.nameEn,
    required this.flag,
    required this.numbers,
  });

  /// ISO 3166-1 alpha-2 Code, z. B. "DE".
  final String isoCode;
  final String nameDe;
  final String nameEn;
  final String flag;
  final List<EmergencyNumber> numbers;

  factory Country.fromJson(String isoCode, Map<String, dynamic> json) {
    final numbersJson = json['numbers'] as List<dynamic>;
    return Country(
      isoCode: isoCode,
      nameDe: json['name_de'] as String,
      nameEn: json['name_en'] as String,
      flag: json['flag'] as String,
      numbers: numbersJson
          .map((e) => EmergencyNumber.fromJson(e as Map<String, dynamic>))
          .toList(growable: false),
    );
  }

  @override
  String toString() => 'Country(isoCode: $isoCode, nameEn: $nameEn)';

  @override
  bool operator ==(Object other) =>
      identical(this, other) ||
      (other is Country &&
          other.isoCode == isoCode &&
          other.nameDe == nameDe &&
          other.nameEn == nameEn &&
          other.flag == flag &&
          _listEquals(other.numbers, numbers));

  @override
  int get hashCode => Object.hash(isoCode, nameDe, nameEn, flag, Object.hashAll(numbers));

  static bool _listEquals(List<EmergencyNumber> a, List<EmergencyNumber> b) {
    if (a.length != b.length) return false;
    for (var i = 0; i < a.length; i++) {
      if (a[i] != b[i]) return false;
    }
    return true;
  }
}