import 'package:vid/us/vid_us_unit.dart';

/// 测量项配置元信息
class ItemMeta {
  /// 名称
  String name;

  /// 描述
  String description;

  /// 简介注释
  String briefAnnotation;

  /// 测量类型
  String measureType;

  /// 计算输出元信息
  List<ItemOutputMeta> outputs;

  /// 子项元信息集合
  List<ItemMeta> childItems;

  /// 多测量方法
  List<ItemMeta> multiMethodItems;

  /// 当前测量项的购买状态
  /// 0: Free 免费
  /// 1: Probation 试用中
  /// 2: Unpaid 未购买
  /// 3: Purchased 已购买
  ///   /// 【TODO】 暂时屏蔽 buyStatus
  // WorkingItemStatusEnum? buyStatus;

  int? rimWidth;

  ItemMeta(
    this.name, {
    required this.measureType,
    required this.description,
    required this.outputs,
    // this.buyStatus,
    this.rimWidth,
    this.briefAnnotation = '',
    this.childItems = const [],
    this.multiMethodItems = const [],
  });

  /// 根据名称获取子项
  ItemMeta? getChildByName(String name) {
    final matchList = childItems.where((e) => e.name == name);
    if (matchList.isNotEmpty) {
      return matchList.first;
    }
    return null;
  }

  /// 根据类型获取子项
  ItemMeta? getChildByType(String type) {
    final matchList = childItems.where((e) => e.measureType == type);
    if (matchList.isNotEmpty) {
      return matchList.first;
    }
    return null;
  }
}

class ItemOutputMeta {
  /// 名称
  String name;

  /// 描述
  String description;

  /// 单位
  VidUsUnit unit;

  /// 简介注释
  String? briefAnnotation;

  /// 额外注释
  String? additionalAnnotation;

  /// 小数精度
  int fractionalDigits;

  ItemOutputMeta(
    this.name,
    this.description,
    this.unit, {
    this.briefAnnotation,
    this.additionalAnnotation,
    this.fractionalDigits = 2,
  });

  ItemOutputMeta copyWith({
    String? name,
    String? description,
    VidUsUnit? unit,
    String? briefAnnotation,
    String? additionalAnnotation,
    int? fractionalDigits,
  }) {
    final meta = ItemOutputMeta(
      name ?? this.name,
      description ?? this.description,
      unit ?? this.unit,
      additionalAnnotation: additionalAnnotation ?? this.additionalAnnotation,
      fractionalDigits: fractionalDigits ?? this.fractionalDigits,
    );
    return meta;
  }
}