package main

import (
	"fmt"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
	"sync"
	"time"

	"github.com/sirupsen/logrus"
)

const (
	diffTime        = 3600 * 24 * 3
	MaxErrorMinutes = 20
)

type MonitorStatus struct {
	MQTTMessageHandle time.Time
	MQTTConnectMgr    time.Time
}

var mypath = [...]string{"/usr/app/ipole/log/", "/usr/app/camera/log/", "/usr/app/its/log/"}

var _once1 sync.Once
var _single1 *MonitorStatus

func GetMonitorStatus() *MonitorStatus {
	_once1.Do(func() {
		_single1 = &MonitorStatus{
			MQTTMessageHandle: time.Now(),
			MQTTConnectMgr:    time.Now(),
		}
	})
	return _single1
}

func (o *MonitorStatus) GetMonitorRunStatus() bool {
	t1 := time.Since(o.MQTTConnectMgr).Minutes()
	t2 := time.Since(o.MQTTMessageHandle).Minutes()
	return int(t1) < MaxErrorMinutes && int(t2) < MaxErrorMinutes
}

func runInLinux(cmd string) (string, error) {
	result, err := exec.Command("/bin/sh", "-c", cmd).Output()
	if err != nil {
		return "", err
	}
	return strings.TrimSpace(string(result)), err
}

// CheckProRunning 根据进程名判断进程是否运行
func CheckProRunning(serverName string) (bool, error) {
	a := "ps |grep " + serverName
	str, err := runInLinux(a)
	if err != nil {
		return false, err
	}

	logrus.Info("ps len", len(str), str)
	return len(str) > 30, nil
}

func CheckAndDeleteLogfile() {
	for _, v := range mypath {
		getFilelist(v)
	}
}

func getFilelist(path string) {
	nowTime := time.Now().Unix()
	err := filepath.Walk(path, func(path string, f os.FileInfo, err error) error {
		if f == nil {
			return err
		}
		fileTime := f.ModTime().Unix()
		if (nowTime-fileTime) > diffTime && !strings.ContainsAny(strings.TrimSuffix(f.Name(), ".log"), "abcdefghijkmlnopqrstuvwxyz") { //判断文件是否超过3天
			fmt.Printf("Delete file %v !\r\n", path)
			os.RemoveAll(path + "/" + f.Name())
		}
		return nil
	})
	if err != nil {
		logrus.Infof("filepath.Walk() returned %v\r\n", err)
	}
}