/// Someone in a group, with the numbers the leaderboard ranks on.
class GroupMember {
  String id;

  String name;

  /// "Owner" or "Member".
  String role;

  /// Share of their own commitments kept over the last seven days, 0..1.
  double keptRate;

  /// Kept days in a row.
  int streak;

  /// Their standing name — Good, Warned, Grounded, Lockdown.
  String standing;

  DateTime? lastCheckIn;

  /// True for the signed-in user.
  bool me;

  GroupMember({
    this.id = "",
    this.name = "",
    this.role = "Member",
    this.keptRate = 0,
    this.streak = 0,
    this.standing = "Good",
    this.lastCheckIn,
    this.me = false,
  });

  bool get owner => role == "Owner";

  factory GroupMember.fromJson(Map<String, dynamic> json) {
    return GroupMember(
      id: json['id'] ?? "",
      name: json['name'] ?? "",
      role: json['role'] ?? "Member",
      keptRate: (json['keptRate'] ?? 0).toDouble(),
      streak: json['streak'] ?? 0,
      standing: json['standing'] ?? "Good",
      lastCheckIn: json['lastCheckIn'] == null
          ? null
          : DateTime.tryParse(json['lastCheckIn']),
      me: json['me'] ?? false,
    );
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = <String, dynamic>{};
    data['id'] = id;
    data['name'] = name;
    data['role'] = role;
    data['keptRate'] = keptRate;
    data['streak'] = streak;
    data['standing'] = standing;
    data['lastCheckIn'] = lastCheckIn?.toIso8601String();
    data['me'] = me;
    return data;
  }
}