import 'package:json_annotation/json_annotation.dart';

part 'example.g.dart';

@JsonSerializable()

class Person {

final String firstName;

@JsonKey(includeIfNull: false)

final String? middleName;

final String lastName;

@JsonKey(name: 'date-of-birth')

final DateTime dateOfBirth;

@JsonKey(name: 'last-order')

final DateTime? lastOrder;

List<Order> orders;

Person(

this.firstName,

this.lastName,

this.dateOfBirth, {

this.middleName,

this.lastOrder,

List<Order>? orders,

}) : orders = orders ?? <Order>[];

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

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

}

@JsonSerializable(includeIfNull: false)

class Order {

int? count;

int? itemNumber;

bool? isRushed;

Item? item;

@JsonKey(

name: 'prep-time',

fromJson: _durationFromMilliseconds,

toJson: _durationToMilliseconds,

)

Duration? prepTime;

@JsonKey(fromJson: _dateTimeFromEpochUs, toJson: _dateTimeToEpochUs)

final DateTime date;

Order(this.date);

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

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

static Duration? _durationFromMilliseconds(int? milliseconds) =>

milliseconds == null ? null : Duration(milliseconds: milliseconds);

static int? _durationToMilliseconds(Duration? duration) =>

duration?.inMilliseconds;

static DateTime _dateTimeFromEpochUs(int us) =>

DateTime.fromMicrosecondsSinceEpoch(us);

static int? _dateTimeToEpochUs(DateTime? dateTime) =>

dateTime?.microsecondsSinceEpoch;

}

@JsonSerializable()

class Item {

int? count;

int? itemNumber;

bool? isRushed;

Item();

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

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

}

@JsonLiteral('data.json')

Map get glossaryData => _$glossaryDataJsonLiteral;