class CouponsHead {
  String? couponId;
  String? businessId;
  String? targetProduct;
  String? type;
  int? quantity;
  DateTime? expiration;
  double? lower;
  double? upper;
  String? state;
  DateTime? generated;

  CouponsHead(
      {this.businessId,
      this.couponId,
      this.expiration,
      this.quantity,
      this.state,
      this.targetProduct,
      this.type,
      this.lower,
      this.upper,
      this.generated});

  CouponsHead.fromJSON(Map<dynamic, dynamic> json)
      : businessId = json['businessId'],
        couponId = json['couponId'],
        expiration = DateTime.tryParse((json['expiration']).toString()),
        generated = DateTime.tryParse((json['generated']).toString()),
        quantity = int.parse((json['quantity']).toString()),
        state = json['state'],
        type = json['type'],
        targetProduct = json['targetProduct'],
        lower = double.parse((json['lower']).toString()),
        upper = double.parse((json['upper']).toString());

   Map<dynamic, dynamic> toJson() {
    final Map<dynamic, dynamic> data = Map<dynamic, dynamic>();
    data['businessID'] = this.businessId;
    data['couponID'] = this.couponId;
    data['expiration'] = this.expiration!.toIso8601String();
    data['generated'] = this.generated != null
        ? this.generated!.toIso8601String()
        : DateTime.now().toIso8601String();
    data['quantity'] = this.quantity;
    data['state'] = this.state;
    data['type'] = this.type;
    data['targetProduct'] = this.targetProduct;
    data['lowerlimit'] = this.lower.toString();
    data['upperlimit'] = this.upper.toString();
    return data;
  }

  @override
  String toString() {
    return '{"businessID": "$businessId","couponID": "$couponId", "expiration": "$expiration", "generated": "$generated","quantity": "$quantity",' +
        '"state": "$state", "type": "$type", "targetProduct": "$targetProduct","lower": "$lower","upper": "$upper"}';
  }
}