package conf

import (
	"io/ioutil"
	"log"
	"os"
	"path/filepath"
	"rtzh_elec_temperature/global"
	"rtzh_elec_temperature/logger"
	"strings"
	"sync"

	"github.com/astaxie/beego"

	"github.com/fsnotify/fsnotify"
)

var GlobalConfig = map[string]string{"loglevel": "4"}
var wrlock sync.RWMutex
var GCWRlock sync.RWMutex

func init() {
	ConfWatcher, err := fsnotify.NewWatcher()
	if err != nil {
		log.Fatal(err)
	}

	//done := make(chan bool)

	dir, _ := filepath.Abs(filepath.Dir(os.Args[0]))

	err = ConfWatcher.Add(dir + "/conf/app.conf")
	if err != nil {
		log.Println(err)
		return
	}
	log.Println("监听配置文件改动:" + dir + "/conf/app.conf,请确保本程序对文件的访问权限已正确设置！")
	go func() {
		for {
			select {
			case event := <-ConfWatcher.Events:
				if event.Op&fsnotify.Write == fsnotify.Write {
					//log.Println("modified file:", event)
					LoadAppConf()
				}
			case err := <-ConfWatcher.Errors:
				if err != nil {
					log.Println("error:", err)
				}
			}
		}
		ConfWatcher.Close()
	}()

	//<-done
}

func LoadAppConf() {
	GCWRlock.Lock()
	GlobalConfig = map[string]string{"loglevel": "4"}
	GCWRlock.Unlock()
	wrlock.Lock()
	fileHanlder, err := os.Open("conf/app.conf")
	if err != nil {
		logger.Logger.Error("配置文件app.conf:" + err.Error())
		os.Exit(1)
	}
	txt, readerr := ioutil.ReadAll(fileHanlder)
	if readerr != nil {
		log.Println(readerr.Error())
		os.Exit(1)
	}
	fileHanlder.Close()
	txtStr := string(txt)
	if txtStr == "" {
		log.Println("配置文件app.conf配置不正确，请正确配置")
		os.Exit(1)
	}
	kv := strings.Split(txtStr, "\n")

	for _, v := range kv {
		if strings.Trim(v, " ") == "" {
			continue
		}
		if strings.HasPrefix(v, "#") {
			continue
		}
		v1 := strings.Split(v, "#")[0]
		if len(v1) == 0 {
			continue
		}
		tmpstr := strings.Split(v1, "=")
		key := strings.ToLower(tmpstr[0])
		value := strings.Trim(v1[len(key)+1:], " ")
		if value != "" {
			GCWRlock.Lock()
			GlobalConfig[key] = value
			if key == "noauthrouter" {
				global.NoAuthRouter = strings.Split(value, ",")
			}
			GCWRlock.Unlock()
		}
	}
	wrlock.Unlock()
	logger.LogLevel = GlobalConfig["loglevel"]
	logger.Logger.Info("配置文件:conf/app.conf更改已重新加载！")
	if GlobalConfig["loglevel"] == "5" {
		beego.SetLevel(beego.LevelNotice)
	} else {
		beego.SetLevel(beego.LevelError)
	}
}