import 'package:common_utils/common_utils.dart';
import 'package:equatable/equatable.dart';
import 'package:floor/floor.dart';
import 'package:json_annotation/json_annotation.dart';
import 'package:pj_supermarket_cloud/common/index.dart';

part 'user_entity.g.dart';

// 优惠
@JsonSerializable()
class DiscountsItem {
  /// 优惠活动名称
  String name;

  /// 用餐时间段类型
  @JsonKey(
    fromJson: JsonTool.stringToProductHourType,
    toJson: JsonTool.productHourTypeToString,
  )
  ProductHourType? hourType;

  /// 优惠类型
  @JsonKey(
    fromJson: JsonTool.stringToDiscountsType,
    toJson: JsonTool.discountsTypeToString,
  )
  DiscountsType? type;

  /// 基础金额(分),超过了这个基数`extraPer`就生效
  int basePrice;

  /// 特色菜是否额外收费
  @JsonKey(
    fromJson: JsonTool.stringToBoolean,
    toJson: JsonTool.booleanToString,
  )
  bool specialDishEnable;

  /// 打折(8折->0.8)
  double? extraPer;

  DiscountsItem({
    required this.name,
    required this.hourType,
    required this.type,
    required this.basePrice,
    required this.specialDishEnable,
    required this.extraPer,
  });

  /// 计算优惠后的价格
  /// [totalPrice] 总金额(分)
  /// [return] 优惠的价格(分)
  int computedDiscountsExtraPrice(int totalPrice) {
    if (totalPrice <= basePrice) return 0;
    final rate = extraPer ?? 1.0;
    if (rate == 1.0) return 0;
    return (totalPrice * (rate - 1)).round();
  }

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

  Map<String, dynamic> toJson() => _$DiscountsItemToJson(this);
}

@JsonSerializable()
@Entity(tableName: "user_record")
class UserEntity extends Equatable {
  /// 自增ID
  @PrimaryKey(autoGenerate: true)
  int? id;

  /// 用户id
  String userId;

  /// 用户名
  String nickname;

  /// 手机号码
  String? mobile;

  /// 用户头像
  String? avatar;

  /// 钱包卡号
  String? walletCardNumber;

  /// 钱包id
  String? walletId;

  /// 钱包类型id
  String? walletTypeId;

  /// 钱包余额
  int? walletBalance;

  /// 用户所属的商户id(主要用于机器的离线模式)
  String? canteenId;

  /// 优惠活动
  List<DiscountsItem>? discountsList;

  /// 优惠活动更新时间
  DateTime? discountsUpdateTime;

  /// 创建时间
  DateTime? createTime;

  /// 同步时间
  DateTime? updateTime;

  UserEntity({
    this.id,
    required this.userId,
    required this.nickname,
    this.mobile,
    this.avatar,
    this.walletCardNumber,
    this.walletId,
    this.walletTypeId,
    this.walletBalance,
    this.canteenId,
    this.createTime,
    this.updateTime,
    this.discountsUpdateTime,
    this.discountsList,
  });

  /// 计算优惠后的价格
  /// [totalPrice] 总金额(分)
  /// [return] 优惠的价格(分)
  int computedDiscountsPrice(int totalPrice) {
    if (ObjectUtil.isEmpty(discountsList)) {
      return 0;
    }
    var discountsPrice = 0;
    for (final item in discountsList!) {
      discountsPrice += item.computedDiscountsExtraPrice(totalPrice);
    }
    return discountsPrice;
  }

  /// 根据`discountsUpdateTime`来计算,最小更新时间30s
  bool isUpdateDiscounts() {
    if (ObjectUtil.isEmpty(discountsUpdateTime)) {
      return true;
    }
    return DateTime.now().difference(discountsUpdateTime!).inSeconds > 30;
  }

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

  Map<String, dynamic> toJson() => _$UserEntityToJson(this);

  @override
  List<Object?> get props => [
        userId,
        nickname,
        mobile,
        walletCardNumber,
        walletId,
        walletTypeId,
        walletBalance,
      ];
}