package main

import (
	"fmt"
	"github.com/robfig/cron"
	"io/ioutil"
	"log"
	"net/http"
	"os/exec"
	"time"
)

func TimeTask() {
	c := cron.New()
	cronstr := "@every " + fmt.Sprint(config.TaskTime) + "m"
	_ = c.AddFunc(cronstr, func() {
		log.Println("每3分钟执行一次")
		StartTask()
	})
	c.Start()
}

func StartTask()  {
	time.AfterFunc(time.Second * time.Duration(config.AdvanceTime), DestroyRes)
	registe()

}

func DestroyRes()  {
	log.Println("提前销毁资源")
	destory()
}

//公网IP
func getMyIp() string {
	resp, err := http.Get("http://myexternalip.com/raw")
	if err != nil {
		return ""
	}
	defer resp.Body.Close()
	bs, _ := ioutil.ReadAll(resp.Body)
	ip := myipreg.FindString(string(bs))
	return ip
}

//切换ip, 保证与旧IP不重复
func changeIP() {
	for i := 0; i < 10; i++ {
		exec.Command("rasdial", config.Name, "/disconnect").Run()
		exec.Command("rasdial", config.Name, config.User, config.Pwd).Run()
		////清空
		//for k, _ := range cache {
		//	delete(cache, k)
		//}
		newip := getMyIp()
		if newip == "" {
			log.Println("取不到公网IP，可能拨号失败了")
			time.Sleep(1 * time.Minute)
		} else if myoldip != newip {
			log.Printf("你的公网IP从%s换成%s \n", myoldip, newip)
			myoldip = newip
			break
		} else {
			log.Println("取到的IP重复了")
		}
	}
}