import 'package:json_annotation/json_annotation.dart';
import 'package:prasule/api/debt_person.dart';
part 'debt_entry.g.dart';

/// Single transaction
///
/// The debt will be split between people who are not in [whoPayed]
@JsonSerializable()
class DebtEntry {
  /// Single transaction
  ///
  /// The debt will be split between people who are not in [whoPayed]
  DebtEntry({
    required this.id,
    required this.amount,
    required this.name,
    required this.whoPayed,
  }) : assert(whoPayed.isNotEmpty, "There has to be at least one payer");

  /// Generates a class instance from a Map
  factory DebtEntry.fromJson(Map<String, dynamic> json) =>
      _$DebtEntryFromJson(json);

  /// Converts the data in this instance into a Map
  Map<String, dynamic> toJson() => _$DebtEntryToJson(this);

  /// Unique identifier
  @JsonKey(required: true, disallowNullValue: true)
  final int id;

  /// The payed amount
  @JsonKey(defaultValue: 0)
  int amount;

  /// User-friendly identifier for the transaction
  @JsonKey(defaultValue: "Unknown")
  String name;

  /// List of people who payed
  @JsonKey(defaultValue: DebtPerson.unknownPerson)
  List<DebtPerson> whoPayed;
}