package util

import (
	"butterfliu/config"
	"os"
	"os/exec"
	"path"
	"strconv"
)

func ExtractCover(filePath string, id int) (string, error) {
	config := config.LoadConfig()
	coverPath := path.Join(config.GetCachePath("cover"), strconv.Itoa(id)+".jpg")

	_, err := os.Stat(coverPath)
	if err == nil {
		return coverPath, nil
	}

	if _, err := exec.LookPath("ffmpeg"); err != nil {
		return "", err
	}
	cmd := exec.Command("ffmpeg", "-i", filePath, "-an", "-vcodec", "mjpeg", "-q:v", "5", "-f", "image2", "-y", coverPath)
	if err := cmd.Run(); err != nil {
		return "", err
	}

	return coverPath, nil

}