part of '../unit_dtos.dart';

@freezed
class UnitDto with _$UnitDto {
  const UnitDto._();

  const factory UnitDto({
    @JsonKey(name: "id") String? id,
    @JsonKey(name: "organization_id") String? organizationId,
    @JsonKey(name: "name") String? name,
    @JsonKey(name: "abbreviation") String? abbreviation,
    @JsonKey(name: "is_active") bool? isActive,
  }) = _UnitDto;

  factory UnitDto.fromJson(Map<String, dynamic> json) =>
      _$UnitDtoFromJson(json);

  ProductUnit toDomain() => ProductUnit(
    id: id ?? '',
    organizationId: organizationId ?? '',
    name: name ?? '',
    abbreviation: abbreviation ?? '',
    isActive: isActive ?? true,
  );

  factory UnitDto.fromDomain(ProductUnit unit) => UnitDto(
    id: unit.id,
    organizationId: unit.organizationId,
    name: unit.name,
    abbreviation: unit.abbreviation,
    isActive: unit.isActive,
  );

  /// Response `/units` belum tentu berbentuk sama di setiap versi backend —
  /// bisa `data: [...]` atau `data: { units: [...] }`. Terima keduanya supaya
  /// POS tidak kehilangan satuan hanya karena pembungkusnya berbeda.
  static List<UnitDto> listFromResponse(dynamic data) {
    if (data is List) {
      return data
          .whereType<Map<String, dynamic>>()
          .map(UnitDto.fromJson)
          .toList();
    }

    if (data is Map<String, dynamic>) {
      for (final key in const ['units', 'items', 'data']) {
        final value = data[key];
        if (value is List) {
          return value
              .whereType<Map<String, dynamic>>()
              .map(UnitDto.fromJson)
              .toList();
        }
      }
    }

    return const [];
  }
}