5bbfbcdae9
问题：滑动窗口过期后（如昨天用满额度），前端仍显示历史数据（红色进度条100%、"即将重置"） 解决： - 后端返回数据前检查窗口是否过期，过期则清零展示数据 - 前端处理 window_start 为 null 的情况，显示"窗口未激活" - 不影响实际的窗口激活逻辑，窗口仍从当天零点开始
638 lines
20 KiB
Go
638 lines
20 KiB
Go
package service
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"time"
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"sub2api/internal/model"
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"sub2api/internal/pkg/pagination"
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"sub2api/internal/service/ports"
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)
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var (
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ErrSubscriptionNotFound = errors.New("subscription not found")
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ErrSubscriptionExpired = errors.New("subscription has expired")
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ErrSubscriptionSuspended = errors.New("subscription is suspended")
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ErrSubscriptionAlreadyExists = errors.New("subscription already exists for this user and group")
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ErrGroupNotSubscriptionType = errors.New("group is not a subscription type")
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ErrDailyLimitExceeded = errors.New("daily usage limit exceeded")
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ErrWeeklyLimitExceeded = errors.New("weekly usage limit exceeded")
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ErrMonthlyLimitExceeded = errors.New("monthly usage limit exceeded")
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)
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// SubscriptionService 订阅服务
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type SubscriptionService struct {
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groupRepo ports.GroupRepository
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userSubRepo ports.UserSubscriptionRepository
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billingCacheService *BillingCacheService
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}
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// NewSubscriptionService 创建订阅服务
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func NewSubscriptionService(groupRepo ports.GroupRepository, userSubRepo ports.UserSubscriptionRepository, billingCacheService *BillingCacheService) *SubscriptionService {
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return &SubscriptionService{
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groupRepo: groupRepo,
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userSubRepo: userSubRepo,
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billingCacheService: billingCacheService,
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}
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}
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// AssignSubscriptionInput 分配订阅输入
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type AssignSubscriptionInput struct {
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UserID int64
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GroupID int64
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ValidityDays int
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AssignedBy int64
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Notes string
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}
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// AssignSubscription 分配订阅给用户（不允许重复分配）
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func (s *SubscriptionService) AssignSubscription(ctx context.Context, input *AssignSubscriptionInput) (*model.UserSubscription, error) {
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// 检查分组是否存在且为订阅类型
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group, err := s.groupRepo.GetByID(ctx, input.GroupID)
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if err != nil {
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return nil, fmt.Errorf("group not found: %w", err)
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}
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if !group.IsSubscriptionType() {
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return nil, ErrGroupNotSubscriptionType
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}
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// 检查是否已存在订阅
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exists, err := s.userSubRepo.ExistsByUserIDAndGroupID(ctx, input.UserID, input.GroupID)
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if err != nil {
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return nil, err
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}
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if exists {
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return nil, ErrSubscriptionAlreadyExists
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}
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sub, err := s.createSubscription(ctx, input)
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if err != nil {
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return nil, err
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}
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// 失效订阅缓存
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if s.billingCacheService != nil {
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userID, groupID := input.UserID, input.GroupID
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go func() {
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cacheCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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_ = s.billingCacheService.InvalidateSubscription(cacheCtx, userID, groupID)
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}()
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}
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return sub, nil
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}
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// AssignOrExtendSubscription 分配或续期订阅（用于兑换码等场景）
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// 如果用户已有同分组的订阅：
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// - 未过期：从当前过期时间累加天数
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// - 已过期：从当前时间开始计算新的过期时间，并激活订阅
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//
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// 如果没有订阅：创建新订阅
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func (s *SubscriptionService) AssignOrExtendSubscription(ctx context.Context, input *AssignSubscriptionInput) (*model.UserSubscription, bool, error) {
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// 检查分组是否存在且为订阅类型
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group, err := s.groupRepo.GetByID(ctx, input.GroupID)
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if err != nil {
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return nil, false, fmt.Errorf("group not found: %w", err)
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}
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if !group.IsSubscriptionType() {
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return nil, false, ErrGroupNotSubscriptionType
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}
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// 查询是否已有订阅
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existingSub, err := s.userSubRepo.GetByUserIDAndGroupID(ctx, input.UserID, input.GroupID)
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if err != nil {
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// 不存在记录是正常情况，其他错误需要返回
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existingSub = nil
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}
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validityDays := input.ValidityDays
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if validityDays <= 0 {
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validityDays = 30
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}
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// 已有订阅，执行续期
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if existingSub != nil {
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now := time.Now()
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var newExpiresAt time.Time
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if existingSub.ExpiresAt.After(now) {
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// 未过期：从当前过期时间累加
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newExpiresAt = existingSub.ExpiresAt.AddDate(0, 0, validityDays)
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} else {
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// 已过期：从当前时间开始计算
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newExpiresAt = now.AddDate(0, 0, validityDays)
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}
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// 更新过期时间
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if err := s.userSubRepo.ExtendExpiry(ctx, existingSub.ID, newExpiresAt); err != nil {
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return nil, false, fmt.Errorf("extend subscription: %w", err)
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}
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// 如果订阅已过期或被暂停，恢复为active状态
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if existingSub.Status != model.SubscriptionStatusActive {
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if err := s.userSubRepo.UpdateStatus(ctx, existingSub.ID, model.SubscriptionStatusActive); err != nil {
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return nil, false, fmt.Errorf("update subscription status: %w", err)
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}
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}
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// 追加备注
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if input.Notes != "" {
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newNotes := existingSub.Notes
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if newNotes != "" {
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newNotes += "\n"
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}
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newNotes += input.Notes
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if err := s.userSubRepo.UpdateNotes(ctx, existingSub.ID, newNotes); err != nil {
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log.Printf("update subscription notes failed: sub_id=%d err=%v", existingSub.ID, err)
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}
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}
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// 失效订阅缓存
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if s.billingCacheService != nil {
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userID, groupID := input.UserID, input.GroupID
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go func() {
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cacheCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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_ = s.billingCacheService.InvalidateSubscription(cacheCtx, userID, groupID)
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}()
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}
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// 返回更新后的订阅
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sub, err := s.userSubRepo.GetByID(ctx, existingSub.ID)
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return sub, true, err // true 表示是续期
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}
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// 没有订阅，创建新订阅
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sub, err := s.createSubscription(ctx, input)
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if err != nil {
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return nil, false, err
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}
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// 失效订阅缓存
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if s.billingCacheService != nil {
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userID, groupID := input.UserID, input.GroupID
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go func() {
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cacheCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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_ = s.billingCacheService.InvalidateSubscription(cacheCtx, userID, groupID)
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}()
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}
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return sub, false, nil // false 表示是新建
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}
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// createSubscription 创建新订阅（内部方法）
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func (s *SubscriptionService) createSubscription(ctx context.Context, input *AssignSubscriptionInput) (*model.UserSubscription, error) {
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validityDays := input.ValidityDays
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if validityDays <= 0 {
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validityDays = 30
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}
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now := time.Now()
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sub := &model.UserSubscription{
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UserID: input.UserID,
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GroupID: input.GroupID,
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StartsAt: now,
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ExpiresAt: now.AddDate(0, 0, validityDays),
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Status: model.SubscriptionStatusActive,
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AssignedAt: now,
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Notes: input.Notes,
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CreatedAt: now,
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UpdatedAt: now,
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}
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// 只有当 AssignedBy > 0 时才设置（0 表示系统分配，如兑换码）
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if input.AssignedBy > 0 {
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sub.AssignedBy = &input.AssignedBy
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}
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if err := s.userSubRepo.Create(ctx, sub); err != nil {
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return nil, err
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}
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// 重新获取完整订阅信息（包含关联）
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return s.userSubRepo.GetByID(ctx, sub.ID)
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}
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// BulkAssignSubscriptionInput 批量分配订阅输入
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type BulkAssignSubscriptionInput struct {
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UserIDs []int64
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GroupID int64
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ValidityDays int
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AssignedBy int64
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Notes string
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}
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// BulkAssignResult 批量分配结果
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type BulkAssignResult struct {
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SuccessCount int
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FailedCount int
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Subscriptions []model.UserSubscription
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Errors []string
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}
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// BulkAssignSubscription 批量分配订阅
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func (s *SubscriptionService) BulkAssignSubscription(ctx context.Context, input *BulkAssignSubscriptionInput) (*BulkAssignResult, error) {
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result := &BulkAssignResult{
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Subscriptions: make([]model.UserSubscription, 0),
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Errors: make([]string, 0),
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}
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for _, userID := range input.UserIDs {
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sub, err := s.AssignSubscription(ctx, &AssignSubscriptionInput{
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UserID: userID,
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GroupID: input.GroupID,
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ValidityDays: input.ValidityDays,
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AssignedBy: input.AssignedBy,
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Notes: input.Notes,
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})
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if err != nil {
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result.FailedCount++
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result.Errors = append(result.Errors, fmt.Sprintf("user %d: %v", userID, err))
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} else {
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result.SuccessCount++
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result.Subscriptions = append(result.Subscriptions, *sub)
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}
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}
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return result, nil
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}
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// RevokeSubscription 撤销订阅
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func (s *SubscriptionService) RevokeSubscription(ctx context.Context, subscriptionID int64) error {
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// 先获取订阅信息用于失效缓存
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sub, err := s.userSubRepo.GetByID(ctx, subscriptionID)
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if err != nil {
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return err
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}
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if err := s.userSubRepo.Delete(ctx, subscriptionID); err != nil {
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return err
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}
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// 失效订阅缓存
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if s.billingCacheService != nil {
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userID, groupID := sub.UserID, sub.GroupID
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go func() {
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cacheCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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_ = s.billingCacheService.InvalidateSubscription(cacheCtx, userID, groupID)
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}()
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}
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return nil
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}
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// ExtendSubscription 延长订阅
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func (s *SubscriptionService) ExtendSubscription(ctx context.Context, subscriptionID int64, days int) (*model.UserSubscription, error) {
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sub, err := s.userSubRepo.GetByID(ctx, subscriptionID)
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if err != nil {
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return nil, ErrSubscriptionNotFound
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}
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// 计算新的过期时间
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newExpiresAt := sub.ExpiresAt.AddDate(0, 0, days)
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if err := s.userSubRepo.ExtendExpiry(ctx, subscriptionID, newExpiresAt); err != nil {
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return nil, err
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}
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// 如果订阅已过期，恢复为active状态
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if sub.Status == model.SubscriptionStatusExpired {
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if err := s.userSubRepo.UpdateStatus(ctx, subscriptionID, model.SubscriptionStatusActive); err != nil {
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return nil, err
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}
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}
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// 失效订阅缓存
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if s.billingCacheService != nil {
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userID, groupID := sub.UserID, sub.GroupID
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go func() {
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cacheCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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_ = s.billingCacheService.InvalidateSubscription(cacheCtx, userID, groupID)
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}()
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}
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return s.userSubRepo.GetByID(ctx, subscriptionID)
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}
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// GetByID 根据ID获取订阅
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func (s *SubscriptionService) GetByID(ctx context.Context, id int64) (*model.UserSubscription, error) {
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return s.userSubRepo.GetByID(ctx, id)
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}
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// GetActiveSubscription 获取用户对特定分组的有效订阅
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func (s *SubscriptionService) GetActiveSubscription(ctx context.Context, userID, groupID int64) (*model.UserSubscription, error) {
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sub, err := s.userSubRepo.GetActiveByUserIDAndGroupID(ctx, userID, groupID)
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if err != nil {
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return nil, ErrSubscriptionNotFound
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}
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return sub, nil
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}
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// ListUserSubscriptions 获取用户的所有订阅
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func (s *SubscriptionService) ListUserSubscriptions(ctx context.Context, userID int64) ([]model.UserSubscription, error) {
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subs, err := s.userSubRepo.ListByUserID(ctx, userID)
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if err != nil {
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return nil, err
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}
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normalizeExpiredWindows(subs)
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return subs, nil
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}
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// ListActiveUserSubscriptions 获取用户的所有有效订阅
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func (s *SubscriptionService) ListActiveUserSubscriptions(ctx context.Context, userID int64) ([]model.UserSubscription, error) {
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subs, err := s.userSubRepo.ListActiveByUserID(ctx, userID)
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if err != nil {
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return nil, err
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}
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normalizeExpiredWindows(subs)
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return subs, nil
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}
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// ListGroupSubscriptions 获取分组的所有订阅
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func (s *SubscriptionService) ListGroupSubscriptions(ctx context.Context, groupID int64, page, pageSize int) ([]model.UserSubscription, *pagination.PaginationResult, error) {
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params := pagination.PaginationParams{Page: page, PageSize: pageSize}
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subs, pag, err := s.userSubRepo.ListByGroupID(ctx, groupID, params)
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if err != nil {
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return nil, nil, err
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}
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normalizeExpiredWindows(subs)
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return subs, pag, nil
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}
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// List 获取所有订阅（分页，支持筛选）
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func (s *SubscriptionService) List(ctx context.Context, page, pageSize int, userID, groupID *int64, status string) ([]model.UserSubscription, *pagination.PaginationResult, error) {
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params := pagination.PaginationParams{Page: page, PageSize: pageSize}
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subs, pag, err := s.userSubRepo.List(ctx, params, userID, groupID, status)
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if err != nil {
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return nil, nil, err
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}
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normalizeExpiredWindows(subs)
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return subs, pag, nil
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}
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// normalizeExpiredWindows 将已过期窗口的数据清零（仅影响返回数据，不影响数据库）
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// 这确保前端显示正确的当前窗口状态，而不是过期窗口的历史数据
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func normalizeExpiredWindows(subs []model.UserSubscription) {
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for i := range subs {
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sub := &subs[i]
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// 日窗口过期：清零展示数据
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if sub.NeedsDailyReset() {
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sub.DailyWindowStart = nil
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sub.DailyUsageUSD = 0
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}
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// 周窗口过期：清零展示数据
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if sub.NeedsWeeklyReset() {
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sub.WeeklyWindowStart = nil
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sub.WeeklyUsageUSD = 0
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}
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// 月窗口过期：清零展示数据
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if sub.NeedsMonthlyReset() {
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sub.MonthlyWindowStart = nil
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sub.MonthlyUsageUSD = 0
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}
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}
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}
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// startOfDay 返回给定时间所在日期的零点（保持原时区）
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func startOfDay(t time.Time) time.Time {
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return time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, t.Location())
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}
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// CheckAndActivateWindow 检查并激活窗口（首次使用时）
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func (s *SubscriptionService) CheckAndActivateWindow(ctx context.Context, sub *model.UserSubscription) error {
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if sub.IsWindowActivated() {
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return nil
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}
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// 使用当天零点作为窗口起始时间
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windowStart := startOfDay(time.Now())
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return s.userSubRepo.ActivateWindows(ctx, sub.ID, windowStart)
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}
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// CheckAndResetWindows 检查并重置过期的窗口
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func (s *SubscriptionService) CheckAndResetWindows(ctx context.Context, sub *model.UserSubscription) error {
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// 使用当天零点作为新窗口起始时间
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windowStart := startOfDay(time.Now())
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needsInvalidateCache := false
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// 日窗口重置（24小时）
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if sub.NeedsDailyReset() {
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if err := s.userSubRepo.ResetDailyUsage(ctx, sub.ID, windowStart); err != nil {
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return err
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}
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sub.DailyWindowStart = &windowStart
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sub.DailyUsageUSD = 0
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needsInvalidateCache = true
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}
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// 周窗口重置（7天）
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if sub.NeedsWeeklyReset() {
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if err := s.userSubRepo.ResetWeeklyUsage(ctx, sub.ID, windowStart); err != nil {
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return err
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}
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sub.WeeklyWindowStart = &windowStart
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sub.WeeklyUsageUSD = 0
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needsInvalidateCache = true
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}
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// 月窗口重置（30天）
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if sub.NeedsMonthlyReset() {
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if err := s.userSubRepo.ResetMonthlyUsage(ctx, sub.ID, windowStart); err != nil {
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return err
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}
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sub.MonthlyWindowStart = &windowStart
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sub.MonthlyUsageUSD = 0
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needsInvalidateCache = true
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}
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// 如果有窗口被重置，失效 Redis 缓存以保持一致性
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if needsInvalidateCache && s.billingCacheService != nil {
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_ = s.billingCacheService.InvalidateSubscription(ctx, sub.UserID, sub.GroupID)
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}
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return nil
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}
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// CheckUsageLimits 检查使用限额（返回错误如果超限）
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func (s *SubscriptionService) CheckUsageLimits(ctx context.Context, sub *model.UserSubscription, group *model.Group, additionalCost float64) error {
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if !sub.CheckDailyLimit(group, additionalCost) {
|
||
return ErrDailyLimitExceeded
|
||
}
|
||
if !sub.CheckWeeklyLimit(group, additionalCost) {
|
||
return ErrWeeklyLimitExceeded
|
||
}
|
||
if !sub.CheckMonthlyLimit(group, additionalCost) {
|
||
return ErrMonthlyLimitExceeded
|
||
}
|
||
return nil
|
||
}
|
||
|
||
// RecordUsage 记录使用量到订阅
|
||
func (s *SubscriptionService) RecordUsage(ctx context.Context, subscriptionID int64, costUSD float64) error {
|
||
return s.userSubRepo.IncrementUsage(ctx, subscriptionID, costUSD)
|
||
}
|
||
|
||
// SubscriptionProgress 订阅进度
|
||
type SubscriptionProgress struct {
|
||
ID int64 `json:"id"`
|
||
GroupName string `json:"group_name"`
|
||
ExpiresAt time.Time `json:"expires_at"`
|
||
ExpiresInDays int `json:"expires_in_days"`
|
||
Daily *UsageWindowProgress `json:"daily,omitempty"`
|
||
Weekly *UsageWindowProgress `json:"weekly,omitempty"`
|
||
Monthly *UsageWindowProgress `json:"monthly,omitempty"`
|
||
}
|
||
|
||
// UsageWindowProgress 使用窗口进度
|
||
type UsageWindowProgress struct {
|
||
LimitUSD float64 `json:"limit_usd"`
|
||
UsedUSD float64 `json:"used_usd"`
|
||
RemainingUSD float64 `json:"remaining_usd"`
|
||
Percentage float64 `json:"percentage"`
|
||
WindowStart time.Time `json:"window_start"`
|
||
ResetsAt time.Time `json:"resets_at"`
|
||
ResetsInSeconds int64 `json:"resets_in_seconds"`
|
||
}
|
||
|
||
// GetSubscriptionProgress 获取订阅使用进度
|
||
func (s *SubscriptionService) GetSubscriptionProgress(ctx context.Context, subscriptionID int64) (*SubscriptionProgress, error) {
|
||
sub, err := s.userSubRepo.GetByID(ctx, subscriptionID)
|
||
if err != nil {
|
||
return nil, ErrSubscriptionNotFound
|
||
}
|
||
|
||
group := sub.Group
|
||
if group == nil {
|
||
group, err = s.groupRepo.GetByID(ctx, sub.GroupID)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
}
|
||
|
||
progress := &SubscriptionProgress{
|
||
ID: sub.ID,
|
||
GroupName: group.Name,
|
||
ExpiresAt: sub.ExpiresAt,
|
||
ExpiresInDays: sub.DaysRemaining(),
|
||
}
|
||
|
||
// 日进度
|
||
if group.HasDailyLimit() && sub.DailyWindowStart != nil {
|
||
limit := *group.DailyLimitUSD
|
||
resetsAt := sub.DailyWindowStart.Add(24 * time.Hour)
|
||
progress.Daily = &UsageWindowProgress{
|
||
LimitUSD: limit,
|
||
UsedUSD: sub.DailyUsageUSD,
|
||
RemainingUSD: limit - sub.DailyUsageUSD,
|
||
Percentage: (sub.DailyUsageUSD / limit) * 100,
|
||
WindowStart: *sub.DailyWindowStart,
|
||
ResetsAt: resetsAt,
|
||
ResetsInSeconds: int64(time.Until(resetsAt).Seconds()),
|
||
}
|
||
if progress.Daily.RemainingUSD < 0 {
|
||
progress.Daily.RemainingUSD = 0
|
||
}
|
||
if progress.Daily.Percentage > 100 {
|
||
progress.Daily.Percentage = 100
|
||
}
|
||
if progress.Daily.ResetsInSeconds < 0 {
|
||
progress.Daily.ResetsInSeconds = 0
|
||
}
|
||
}
|
||
|
||
// 周进度
|
||
if group.HasWeeklyLimit() && sub.WeeklyWindowStart != nil {
|
||
limit := *group.WeeklyLimitUSD
|
||
resetsAt := sub.WeeklyWindowStart.Add(7 * 24 * time.Hour)
|
||
progress.Weekly = &UsageWindowProgress{
|
||
LimitUSD: limit,
|
||
UsedUSD: sub.WeeklyUsageUSD,
|
||
RemainingUSD: limit - sub.WeeklyUsageUSD,
|
||
Percentage: (sub.WeeklyUsageUSD / limit) * 100,
|
||
WindowStart: *sub.WeeklyWindowStart,
|
||
ResetsAt: resetsAt,
|
||
ResetsInSeconds: int64(time.Until(resetsAt).Seconds()),
|
||
}
|
||
if progress.Weekly.RemainingUSD < 0 {
|
||
progress.Weekly.RemainingUSD = 0
|
||
}
|
||
if progress.Weekly.Percentage > 100 {
|
||
progress.Weekly.Percentage = 100
|
||
}
|
||
if progress.Weekly.ResetsInSeconds < 0 {
|
||
progress.Weekly.ResetsInSeconds = 0
|
||
}
|
||
}
|
||
|
||
// 月进度
|
||
if group.HasMonthlyLimit() && sub.MonthlyWindowStart != nil {
|
||
limit := *group.MonthlyLimitUSD
|
||
resetsAt := sub.MonthlyWindowStart.Add(30 * 24 * time.Hour)
|
||
progress.Monthly = &UsageWindowProgress{
|
||
LimitUSD: limit,
|
||
UsedUSD: sub.MonthlyUsageUSD,
|
||
RemainingUSD: limit - sub.MonthlyUsageUSD,
|
||
Percentage: (sub.MonthlyUsageUSD / limit) * 100,
|
||
WindowStart: *sub.MonthlyWindowStart,
|
||
ResetsAt: resetsAt,
|
||
ResetsInSeconds: int64(time.Until(resetsAt).Seconds()),
|
||
}
|
||
if progress.Monthly.RemainingUSD < 0 {
|
||
progress.Monthly.RemainingUSD = 0
|
||
}
|
||
if progress.Monthly.Percentage > 100 {
|
||
progress.Monthly.Percentage = 100
|
||
}
|
||
if progress.Monthly.ResetsInSeconds < 0 {
|
||
progress.Monthly.ResetsInSeconds = 0
|
||
}
|
||
}
|
||
|
||
return progress, nil
|
||
}
|
||
|
||
// GetUserSubscriptionsWithProgress 获取用户所有订阅及进度
|
||
func (s *SubscriptionService) GetUserSubscriptionsWithProgress(ctx context.Context, userID int64) ([]SubscriptionProgress, error) {
|
||
subs, err := s.userSubRepo.ListActiveByUserID(ctx, userID)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
progresses := make([]SubscriptionProgress, 0, len(subs))
|
||
for _, sub := range subs {
|
||
progress, err := s.GetSubscriptionProgress(ctx, sub.ID)
|
||
if err != nil {
|
||
continue
|
||
}
|
||
progresses = append(progresses, *progress)
|
||
}
|
||
|
||
return progresses, nil
|
||
}
|
||
|
||
// UpdateExpiredSubscriptions 更新过期订阅状态（定时任务调用）
|
||
func (s *SubscriptionService) UpdateExpiredSubscriptions(ctx context.Context) (int64, error) {
|
||
return s.userSubRepo.BatchUpdateExpiredStatus(ctx)
|
||
}
|
||
|
||
// ValidateSubscription 验证订阅是否有效
|
||
func (s *SubscriptionService) ValidateSubscription(ctx context.Context, sub *model.UserSubscription) error {
|
||
if sub.Status == model.SubscriptionStatusExpired {
|
||
return ErrSubscriptionExpired
|
||
}
|
||
if sub.Status == model.SubscriptionStatusSuspended {
|
||
return ErrSubscriptionSuspended
|
||
}
|
||
if sub.IsExpired() {
|
||
// 更新状态
|
||
_ = s.userSubRepo.UpdateStatus(ctx, sub.ID, model.SubscriptionStatusExpired)
|
||
return ErrSubscriptionExpired
|
||
}
|
||
return nil
|
||
}
|