Product.dart

import 'package:json_annotation/json_annotation.dart';
import 'package:gogreen_utility_belt/interface_class/JSONSerializable.dart';
part 'Product.g.dart'; //flutter pub run build_runner build

@JsonSerializable()
class Product extends JSONSerializable {
  static final Product example = Product(//comment out on build_runner build
      upc: '10000000000',
      inventory: 0,
      categories: ['Rum'],
      desc: 'This is a product',
      discontinued: false,
      earliestShipDate: DateTime(2019),
      earliestShipDateQuantity: 0,
      imageBase64: '',
      imageURL: 'https://8.8.4.4',
      listPrice: 0.50,
      minSaleQty: 2,
      mongoID: {'\$id': ''},
      mpn: '0000',
      price: 0.75,
      productID: 10000,
      title: 'This is the title',
      uom: 'ea',
      uomQty: 1);
  final Map<String, String> mongoID;
  final String title;
  @JsonKey(fromJson: _toInteger)
  final int productID;
  final String mpn;
  final double listPrice;
  final double price;
  final String uom;
  @JsonKey(fromJson: _toInteger)
  final int uomQty;
  @JsonKey(fromJson: _toInteger)
  final int inventory;
  @JsonKey(fromJson: _toInteger)
  final int minSaleQty;
  final String desc;

  List<String> categories;
  final String imageURL;
  final String imageBase64;
  final String upc;
  final bool discontinued;
  @JsonKey(fromJson: _toDateTime)
  final DateTime earliestShipDate;
  @JsonKey(fromJson: _toInteger)
  final int earliestShipDateQuantity;

  Product(
      {this.categories,
      this.desc,
      this.discontinued,
      this.earliestShipDate,
      this.earliestShipDateQuantity,
      this.imageBase64,
      this.imageURL,
      this.inventory,
      this.listPrice,
      this.minSaleQty,
      this.mongoID,
      this.mpn,
      this.price,
      this.productID,
      this.title,
      this.uom,
      this.uomQty,
      this.upc});

  @override
  factory Product.fromJson(Map<String, dynamic> json) =>
      _$ProductFromJson(json);

  @override
  Map<String, dynamic> toJson() => _$ProductToJson(this);

  @override
  List<String> propertyNames() {
    List<String> list = [];
    for (String str in toJson().keys) {
      list.add(str);
    }
    print('returning property names');
    return list;
  }

  @override
  List<String> uniqueProperties() {
    return ['upc', 'mpn', 'productID'];
  }

  static int _toInteger(dynamic givenValue) {
    print('converting to integer');
    if(givenValue == null) {
      return 0;
    }
    else if(givenValue is int){
      return givenValue;
    }
    else if(givenValue is String) {
      return int.parse(givenValue);
    }
    else return 0;
  }

  static DateTime _toDateTime(dynamic givenValue) {
    print('converting to date time');
    if(givenValue == null){
      return null;
    }
    String stringValue = givenValue as String;
    if (stringValue == '') {
      return null;
    }
    List<String> splitValues = stringValue.split('/');
    if(splitValues.length == 3) {
      String year = splitValues[2];
      String month = splitValues[0];
      String day = splitValues[1];
      String properFormat = [year, month, day].join ('-');
//    print(properFormat);
      return DateTime.parse (properFormat);
    }
    else {
      print(givenValue);
      return null;
    }
  }
}

enum ProductSearchParameter {
  categories,
  desc,
  earliestShipDate,
  mpn,
  productID,
  title,
  upc
}