修复错误购买报错的问题,修复接口返回虚流量启动错误的问题

internal/task/auto_purchase.go

@@ -501,13 +501,10 @@ func (h *AutoPurchaseHandler) activateMainPackage(
 		return err
 	}
 
-	hasBlockingMain, err := packagepkg.HasBlockingMainPackageForFormal(tx.WithContext(ctx), carrierType, carrierID, now)
+	hasCurrentMain, err := packagepkg.HasCurrentMainPackageForQueue(tx.WithContext(ctx), carrierType, carrierID, now)
 	if err != nil {
 		return err
 	}
-	if hasBlockingMain {
-		return errors.New("已有主套餐，不能重复购买主套餐")
-	}
 
 	var status int
 	var priority int
@@ -516,11 +513,21 @@ func (h *AutoPurchaseHandler) activateMainPackage(
 	var nextResetAt *time.Time
 	var pendingRealnameActivation bool
 
-	status = constants.PackageUsageStatusActive
-	priority = 1
-	activatedAt = now
-	expiresAt = packagepkg.CalculateExpiryTime(pkg.CalendarType, activatedAt, pkg.DurationMonths, pkg.DurationDays)
-	nextResetAt = packagepkg.CalculateNextResetTime(pkg.DataResetCycle, pkg.CalendarType, now, activatedAt)
+	if hasCurrentMain {
+		status = constants.PackageUsageStatusPending
+		var maxPriority int
+		tx.Model(&model.PackageUsage{}).
+			Where(carrierType+"_id = ?", carrierID).
+			Select("COALESCE(MAX(priority), 0)").
+			Scan(&maxPriority)
+		priority = maxPriority + 1
+	} else {
+		status = constants.PackageUsageStatusActive
+		priority = 1
+		activatedAt = now
+		expiresAt = packagepkg.CalculateExpiryTime(pkg.CalendarType, activatedAt, pkg.DurationMonths, pkg.DurationDays)
+		nextResetAt = packagepkg.CalculateNextResetTime(pkg.DataResetCycle, pkg.CalendarType, now, activatedAt)
+	}
 
 	// REALNAME-02: 自动购包属于 C 端充值触发，不需要等实名（C 端已做前置实名检查）
 	// ExpiryBase 仅影响后台囤货路径，此处无需判断