429 lines
12 KiB
Dart
429 lines
12 KiB
Dart
import 'package:equatable/equatable.dart';
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import 'package:json_annotation/json_annotation.dart';
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import '../../utils/date_time_parser.dart';
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part 'subscription_models.g.dart';
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/// 订阅计划模型
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@JsonSerializable()
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class SubscriptionPlan extends Equatable {
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final String? id;
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final String planName;
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final String? description;
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final double price;
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final String currency;
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final BillingCycle billingCycle;
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final String? roleId;
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final int? creditsGranted;
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final bool active;
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final bool recommended;
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final int priority;
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final Map<String, dynamic>? features;
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final int trialDays;
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final int maxUsers;
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final DateTime? createdAt;
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final DateTime? updatedAt;
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const SubscriptionPlan({
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this.id,
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required this.planName,
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this.description,
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required this.price,
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required this.currency,
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required this.billingCycle,
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this.roleId,
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this.creditsGranted,
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this.active = true,
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this.recommended = false,
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this.priority = 0,
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this.features,
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this.trialDays = 0,
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this.maxUsers = -1,
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this.createdAt,
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this.updatedAt,
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});
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factory SubscriptionPlan.fromJson(Map<String, dynamic> json) {
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// 兼容后端字段可能为空或类型不一致（如 BigDecimal 序列化为字符串）
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final dynamic priceRaw = json['price'];
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final double parsedPrice = priceRaw is num
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? priceRaw.toDouble()
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: (priceRaw is String ? double.tryParse(priceRaw) ?? 0.0 : 0.0);
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final dynamic priorityRaw = json['priority'];
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final int parsedPriority = priorityRaw is num
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? priorityRaw.toInt()
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: (priorityRaw is String ? int.tryParse(priorityRaw) ?? 0 : 0);
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final dynamic creditsRaw = json['creditsGranted'];
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final int? parsedCredits = creditsRaw == null
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? null
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: (creditsRaw is num
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? creditsRaw.toInt()
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: (creditsRaw is String ? int.tryParse(creditsRaw) : null));
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final dynamic activeRaw = json['active'];
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final bool parsedActive = activeRaw is bool
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? activeRaw
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: (activeRaw is String ? activeRaw.toLowerCase() == 'true' : true);
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final dynamic recommendedRaw = json['recommended'];
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final bool parsedRecommended = recommendedRaw is bool
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? recommendedRaw
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: (recommendedRaw is String ? recommendedRaw.toLowerCase() == 'true' : false);
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final featuresRaw = json['features'];
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final Map<String, dynamic>? parsedFeatures =
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featuresRaw is Map<String, dynamic> ? featuresRaw : null;
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return SubscriptionPlan(
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id: json['id'] as String?,
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planName: (json['planName'] as String?) ?? '未命名套餐',
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description: json['description'] as String?,
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price: parsedPrice,
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currency: (json['currency'] as String?) ?? 'CNY',
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billingCycle: _parseBillingCycle(json['billingCycle']),
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roleId: json['roleId'] as String?,
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creditsGranted: parsedCredits,
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active: parsedActive,
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recommended: parsedRecommended,
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priority: parsedPriority,
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features: parsedFeatures,
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trialDays: ((json['trialDays'] is String)
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? int.tryParse(json['trialDays'])
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: (json['trialDays'] as num?))
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?.toInt() ?? 0,
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maxUsers: ((json['maxUsers'] is String)
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? int.tryParse(json['maxUsers'])
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: (json['maxUsers'] as num?))
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?.toInt() ?? -1,
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createdAt: json['createdAt'] != null ? parseBackendDateTime(json['createdAt']) : null,
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updatedAt: json['updatedAt'] != null ? parseBackendDateTime(json['updatedAt']) : null,
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);
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}
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Map<String, dynamic> toJson() => _$SubscriptionPlanToJson(this);
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@override
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List<Object?> get props => [
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id,
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planName,
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description,
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price,
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currency,
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billingCycle,
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roleId,
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creditsGranted,
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active,
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recommended,
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priority,
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features,
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trialDays,
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maxUsers,
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createdAt,
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updatedAt,
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];
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/// 获取月度等价价格
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double get monthlyEquivalentPrice {
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switch (billingCycle) {
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case BillingCycle.monthly:
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return price;
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case BillingCycle.quarterly:
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return price / 3;
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case BillingCycle.yearly:
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return price / 12;
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case BillingCycle.lifetime:
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return price / 120; // 假设10年使用期
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}
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}
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/// 获取计费周期显示文本
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String get billingCycleText {
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switch (billingCycle) {
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case BillingCycle.monthly:
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return '月付';
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case BillingCycle.quarterly:
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return '季付';
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case BillingCycle.yearly:
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return '年付';
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case BillingCycle.lifetime:
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return '终身';
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}
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}
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/// 获取格式化价格
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String get formattedPrice {
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return '$currency ${price.toStringAsFixed(2)}';
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}
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/// 解析BillingCycle枚举
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static BillingCycle _parseBillingCycle(dynamic value) {
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if (value == null) return BillingCycle.monthly;
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final stringValue = value.toString().toUpperCase();
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switch (stringValue) {
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case 'MONTHLY':
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return BillingCycle.monthly;
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case 'QUARTERLY':
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return BillingCycle.quarterly;
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case 'YEARLY':
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return BillingCycle.yearly;
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case 'LIFETIME':
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return BillingCycle.lifetime;
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default:
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return BillingCycle.monthly;
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}
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}
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/// 创建副本
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SubscriptionPlan copyWith({
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String? id,
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String? planName,
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String? description,
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double? price,
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String? currency,
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BillingCycle? billingCycle,
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String? roleId,
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int? creditsGranted,
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bool? active,
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bool? recommended,
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int? priority,
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Map<String, dynamic>? features,
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int? trialDays,
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int? maxUsers,
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DateTime? createdAt,
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DateTime? updatedAt,
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}) {
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return SubscriptionPlan(
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id: id ?? this.id,
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planName: planName ?? this.planName,
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description: description ?? this.description,
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price: price ?? this.price,
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currency: currency ?? this.currency,
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billingCycle: billingCycle ?? this.billingCycle,
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roleId: roleId ?? this.roleId,
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creditsGranted: creditsGranted ?? this.creditsGranted,
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active: active ?? this.active,
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recommended: recommended ?? this.recommended,
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priority: priority ?? this.priority,
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features: features ?? this.features,
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trialDays: trialDays ?? this.trialDays,
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maxUsers: maxUsers ?? this.maxUsers,
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createdAt: createdAt ?? this.createdAt,
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updatedAt: updatedAt ?? this.updatedAt,
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);
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}
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}
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/// 计费周期枚举
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enum BillingCycle {
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@JsonValue('MONTHLY')
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monthly,
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@JsonValue('QUARTERLY')
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quarterly,
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@JsonValue('YEARLY')
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yearly,
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@JsonValue('LIFETIME')
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lifetime,
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}
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/// 用户订阅模型
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@JsonSerializable()
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class UserSubscription extends Equatable {
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final String? id;
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final String userId;
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final String planId;
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final DateTime? startDate;
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final DateTime? endDate;
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final SubscriptionStatus status;
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final bool autoRenewal;
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final String? paymentMethod;
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final String? transactionId;
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final int creditsUsed;
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final int totalCredits;
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final DateTime? canceledAt;
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final String? cancelReason;
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final DateTime? trialEndDate;
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final bool isTrial;
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final DateTime? createdAt;
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final DateTime? updatedAt;
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const UserSubscription({
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this.id,
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required this.userId,
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required this.planId,
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this.startDate,
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this.endDate,
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required this.status,
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this.autoRenewal = false,
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this.paymentMethod,
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this.transactionId,
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this.creditsUsed = 0,
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this.totalCredits = 0,
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this.canceledAt,
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this.cancelReason,
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this.trialEndDate,
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this.isTrial = false,
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this.createdAt,
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this.updatedAt,
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});
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factory UserSubscription.fromJson(Map<String, dynamic> json) {
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return UserSubscription(
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id: json['id'] as String?,
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userId: json['userId'] as String,
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planId: json['planId'] as String,
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startDate: json['startDate'] != null ? parseBackendDateTime(json['startDate']) : null,
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endDate: json['endDate'] != null ? parseBackendDateTime(json['endDate']) : null,
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status: _parseSubscriptionStatus(json['status']),
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autoRenewal: json['autoRenewal'] as bool? ?? false,
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paymentMethod: json['paymentMethod'] as String?,
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transactionId: json['transactionId'] as String?,
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creditsUsed: (json['creditsUsed'] as num?)?.toInt() ?? 0,
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totalCredits: (json['totalCredits'] as num?)?.toInt() ?? 0,
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canceledAt: json['canceledAt'] != null ? parseBackendDateTime(json['canceledAt']) : null,
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cancelReason: json['cancelReason'] as String?,
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trialEndDate: json['trialEndDate'] != null ? parseBackendDateTime(json['trialEndDate']) : null,
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isTrial: json['isTrial'] as bool? ?? false,
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createdAt: json['createdAt'] != null ? parseBackendDateTime(json['createdAt']) : null,
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updatedAt: json['updatedAt'] != null ? parseBackendDateTime(json['updatedAt']) : null,
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);
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}
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Map<String, dynamic> toJson() => _$UserSubscriptionToJson(this);
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@override
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List<Object?> get props => [
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id,
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userId,
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planId,
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startDate,
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endDate,
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status,
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autoRenewal,
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paymentMethod,
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transactionId,
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creditsUsed,
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totalCredits,
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canceledAt,
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cancelReason,
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trialEndDate,
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isTrial,
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createdAt,
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updatedAt,
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];
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/// 获取剩余积分
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int get remainingCredits => (totalCredits - creditsUsed).clamp(0, totalCredits);
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/// 检查订阅是否有效
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bool get isValid {
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final now = DateTime.now();
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return (status == SubscriptionStatus.active || status == SubscriptionStatus.trial) &&
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(endDate == null || endDate!.isAfter(now));
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}
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/// 检查是否即将过期（7天内）
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bool get isExpiringSoon {
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if (endDate == null) return false;
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final now = DateTime.now();
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final sevenDaysLater = now.add(const Duration(days: 7));
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return endDate!.isBefore(sevenDaysLater) && endDate!.isAfter(now);
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}
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/// 解析SubscriptionStatus枚举
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static SubscriptionStatus _parseSubscriptionStatus(dynamic value) {
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if (value == null) return SubscriptionStatus.active;
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final stringValue = value.toString().toUpperCase();
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switch (stringValue) {
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case 'ACTIVE':
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return SubscriptionStatus.active;
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case 'TRIAL':
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return SubscriptionStatus.trial;
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case 'CANCELED':
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return SubscriptionStatus.canceled;
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case 'EXPIRED':
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return SubscriptionStatus.expired;
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case 'SUSPENDED':
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return SubscriptionStatus.suspended;
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case 'REFUNDED':
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return SubscriptionStatus.refunded;
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default:
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return SubscriptionStatus.active;
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}
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}
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/// 获取状态显示文本
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String get statusText {
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switch (status) {
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case SubscriptionStatus.active:
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return '活跃';
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case SubscriptionStatus.trial:
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return '试用期';
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case SubscriptionStatus.canceled:
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return '已取消';
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case SubscriptionStatus.expired:
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return '已过期';
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case SubscriptionStatus.suspended:
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return '暂停';
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case SubscriptionStatus.refunded:
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return '已退款';
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}
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}
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}
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/// 订阅状态枚举
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enum SubscriptionStatus {
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@JsonValue('ACTIVE')
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active,
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@JsonValue('TRIAL')
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trial,
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@JsonValue('CANCELED')
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canceled,
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@JsonValue('EXPIRED')
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expired,
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@JsonValue('SUSPENDED')
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suspended,
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@JsonValue('REFUNDED')
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refunded,
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}
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/// 订阅统计信息
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@JsonSerializable()
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class SubscriptionStatistics extends Equatable {
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final int totalPlans;
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final int activePlans;
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final int totalSubscriptions;
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final int activeSubscriptions;
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final int trialSubscriptions;
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final double monthlyRevenue;
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final double yearlyRevenue;
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const SubscriptionStatistics({
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required this.totalPlans,
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required this.activePlans,
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required this.totalSubscriptions,
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required this.activeSubscriptions,
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required this.trialSubscriptions,
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required this.monthlyRevenue,
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required this.yearlyRevenue,
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});
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factory SubscriptionStatistics.fromJson(Map<String, dynamic> json) =>
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_$SubscriptionStatisticsFromJson(json);
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Map<String, dynamic> toJson() => _$SubscriptionStatisticsToJson(this);
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@override
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List<Object?> get props => [
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totalPlans,
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activePlans,
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totalSubscriptions,
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activeSubscriptions,
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trialSubscriptions,
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monthlyRevenue,
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yearlyRevenue,
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];
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} |