优化

client/flutter/lib/models/stats.dart

@@ -0,0 +1,154 @@
+/// 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'] ?? {},
+    );
+  }
+}