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

/// A folder for different entries and people
@JsonSerializable()
class DebtScenario {
  /// A folder for different entries and people
  DebtScenario({
    required this.id,
    required this.name,
    required this.isArchived,
    required this.people,
    this.entries = const [],
  });

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

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

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

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

  /// Whether this scenario should be shown under archived ones
  @JsonKey(defaultValue: false)
  bool isArchived;

  /// All entries
  @JsonKey(defaultValue: [])
  final List<DebtEntry> entries;

  /// All people
  @JsonKey(defaultValue: _defaultPeopleList)
  final List<DebtPerson> people;

  /// Getter for the next unused unique number ID for a [DebtPerson]
  int get nextPersonId {
    var id = 1;
    while (people.where((element) => element.id == id).isNotEmpty) {
      id++; // create unique ID
    }
    return id;
  }

  /// Getter for the next unused unique number ID for a [DebtEntry]
  int get nextEntryId {
    var id = 1;
    while (entries.where((element) => element.id == id).isNotEmpty) {
      id++; // create unique ID
    }
    return id;
  }
}

List<DebtPerson> _defaultPeopleList() => [DebtPerson.unknownPerson()];