package ytdl

import (
	"bytes"
	"os/exec"
	"strings"
	"sync"

	"github.com/spf13/viper"
)

var (
	version     string
	versionOnce sync.Once
)

func GetVersion() string {
	var err error
	versionOnce.Do(func() {
		cmd := exec.Command(
			viper.GetString("ytdlp_path"),
			"--version",
		)

		var out bytes.Buffer
		cmd.Stdout = &out

		err = cmd.Run()
		if err != nil {
			return
		}

		version = strings.TrimSpace(out.String())
	})

	if err != nil {
		return "Error getting version"
	}

	return version
}