/// My stats returned by stats.getMyStats
class MyStats {
  final TotalStats total;
  final TodayStats today;
  final List<InviteSummary> recentInvites;

  MyStats({
    required this.total,
    required this.today,
    this.recentInvites = const [],
  });

  factory MyStats.fromJson(Map<String, dynamic> json) {
    return MyStats(
      total: TotalStats.fromJson(json['total'] ?? {}),
      today: TodayStats.fromJson(json['today'] ?? {}),
      recentInvites: (json['recentInvites'] as List?)
              ?.map((e) => InviteSummary.fromJson(e))
              .toList() ??
          [],
    );
  }
}

class TotalStats {
  final int totalInvites;
  final int totalJoins;
  final int totalConversions;
  final double totalRevenue;

  TotalStats({
    this.totalInvites = 0,
    this.totalJoins = 0,
    this.totalConversions = 0,
    this.totalRevenue = 0,
  });

  factory TotalStats.fromJson(Map<String, dynamic> json) {
    return TotalStats(
      totalInvites: json['totalInvites'] ?? 0,
      totalJoins: json['totalJoins'] ?? 0,
      totalConversions: json['totalConversions'] ?? 0,
      totalRevenue: (json['totalRevenue'] ?? 0).toDouble(),
    );
  }
}

class TodayStats {
  final int invitesCreated;
  final int joins;
  final int conversions;
  final double revenue;

  TodayStats({
    this.invitesCreated = 0,
    this.joins = 0,
    this.conversions = 0,
    this.revenue = 0,
  });

  factory TodayStats.fromJson(Map<String, dynamic> json) {
    return TodayStats(
      invitesCreated: json['invitesCreated'] ?? 0,
      joins: json['joins'] ?? 0,
      conversions: json['conversions'] ?? 0,
      revenue: (json['revenue'] ?? 0).toDouble(),
    );
  }
}

class InviteSummary {
  final String? id;
  final String? code;
  final String? groupId;
  final String? link;
  final int? clickCount;
  final int? joinCount;
  final DateTime? createdAt;

  InviteSummary({
    this.id,
    this.code,
    this.groupId,
    this.link,
    this.clickCount,
    this.joinCount,
    this.createdAt,
  });

  factory InviteSummary.fromJson(Map<String, dynamic> json) {
    return InviteSummary(
      id: (json['_id'] ?? json['id'])?.toString(),
      code: json['code'],
      groupId: json['groupId']?.toString(),
      link: json['link'],
      clickCount: json['clickCount'],
      joinCount: json['joinCount'],
      createdAt: json['createdAt'] != null
          ? DateTime.parse(json['createdAt'].toString())
          : null,
    );
  }
}

/// Ranking entry returned by stats.getRanking
class RankingEntry {
  final int rank;
  final String salesId;
  final int totalJoins;
  final int totalConversions;
  final double totalRevenue;
  final Map<String, dynamic>? user;

  RankingEntry({
    this.rank = 0,
    required this.salesId,
    this.totalJoins = 0,
    this.totalConversions = 0,
    this.totalRevenue = 0,
    this.user,
  });

  factory RankingEntry.fromJson(Map<String, dynamic> json) {
    return RankingEntry(
      rank: json['rank'] ?? 0,
      salesId: (json['_id'] ?? json['salesId'] ?? '').toString(),
      totalJoins: json['totalJoins'] ?? 0,
      totalConversions: json['totalConversions'] ?? 0,
      totalRevenue: (json['totalRevenue'] ?? 0).toDouble(),
      user: json['user'],
    );
  }

  String get displayName =>
      user?['nickname']?.toString() ?? user?['email']?.toString() ?? salesId;
}

/// Platform stats returned by stats.getPlatformStats
class PlatformStats {
  final Map<String, dynamic> platform;
  final Map<String, dynamic> today;

  PlatformStats({
    this.platform = const {},
    this.today = const {},
  });

  factory PlatformStats.fromJson(Map<String, dynamic> json) {
    return PlatformStats(
      platform: json['platform'] ?? {},
      today: json['today'] ?? {},
    );
  }
}