eryao/apps/lib/features/divination/data/models/yao_coin_converter.dart

import 'divination_params.dart';

class YaoCoinConverter {
  const YaoCoinConverter._();

  static YaoType fromHuaCount(int huaCount) {
    return switch (huaCount) {
      0 => YaoType.oldYin,
      1 => YaoType.youngYang,
      2 => YaoType.youngYin,
      3 => YaoType.oldYang,
      _ => throw ArgumentError.value(huaCount, 'huaCount', 'must be 0..3'),
    };
  }

  static YaoType fromZiCount(int ziCount) {
    return fromHuaCount(3 - ziCount);
  }
}