package scheduler

import (
	"log"
	"photowall/internal/service"
	"time"
)

// StartCleanup 启动过期班级清理定时任务。
// 每小时检查一次，超过 audit_deadline 仍未通过审核的班级自动删除。
func StartCleanup(adminSvc *service.AdminService) {
	go func() {
		// 启动后延迟 1 分钟先跑一次，避免服务刚启动就堆积
		time.Sleep(1 * time.Minute)
		runCleanup(adminSvc)

		ticker := time.NewTicker(1 * time.Hour)
		defer ticker.Stop()
		for range ticker.C {
			runCleanup(adminSvc)
		}
	}()
	log.Println("[scheduler] expired class cleanup started (runs hourly)")
}

func runCleanup(adminSvc *service.AdminService) {
	count, err := adminSvc.CleanupExpired()
	if err != nil {
		log.Printf("[scheduler] cleanup error: %v", err)
		return
	}
	if count > 0 {
		log.Printf("[scheduler] auto-deleted %d expired classes", count)
	}
}