package main

import (
	"context"
	"fmt"
	"time"

	"git.wecise.com/wecise/common/etcd"
)

func main() {
	etcdPath := "47.92.151.165:2379"
	etcdUser := ""
	etcdPass := ""
	etcdFile := "/matrix/etc/omdb"
	etcdURL := "etcd://" + etcdUser + "@" + etcdPath + "" + etcdFile
	fmt.Println(etcdURL)
	cli, err := etcd.NewClient(etcdPath, etcdUser, etcdPass)
	if err != nil {
		fmt.Println(err)
		return
	}
	val, err := cli.Get(etcdFile)
	if err != nil {
		fmt.Println(err)
		return
	}
	fmt.Println(fmt.Sprintf("load config from %s", etcdURL))
	cache_value := []string{""}
	on_change := func(value string) {
		if cache_value[0] != value {
			fmt.Println("config changed:\r\n", value)
		}
	}
	on_change(val)
	ch := cli.Watch(context.Background(), etcdFile, false)
	go func() {
		fmt.Println(fmt.Sprintf("watching %s", etcdURL))
		for {
			select {
			case evt := <-ch:
				on_change(evt.Node.Value)
			}
		}
	}()
	for {
		time.Sleep(1 * time.Minute)
	}
}