setRefreshToken by json

setRefreshToken.go

func getpath() string {
	file := os.Args[0]
	path, err := exec.LookPath(file)
	if err == nil {
		path = filepath.Dir(path)
	}
	return path
}

func readToken() {
	path := getpath()
	data, err := ioutil.ReadFile(path + "/secret.json")
	fmt.Println(path + "/secret.json")
	fmt.Println(data)
	if err != nil {
		fmt.Print(err)
	}

	// define data structure
	type Token struct {
		R_refresh_token string
	}

	// json data
	var obj Token

	// unmarshall it
	err = json.Unmarshal(data, &obj)
	if err != nil {
		fmt.Println("error:", err)
	}
	fmt.Println(obj)
	_refresh_token = obj.R_refresh_token
}