package main

import (
	"errors"
	"log"
	"os/exec"
)

func hyprpaperSet(path string) {

	err := hyprpaperPreload(path)
	if err != nil {
		log.Fatal("preload failed!", err)
	}
	err = hyprpaperWallpaper(path)
	if err != nil {
		log.Fatal("set wallpaper failed!", err)
	}
	err = hyprpaperUnloadAll()
	if err != nil {
		log.Fatal("unload all failed!", err)
	}
}

func hyprpaperPreload(path string) error {
	out, err := exec.Command("hyprctl", "hyprpaper", "preload", path).Output()
	if err != nil {
		return err
	}
	return checkHyprctlError(out)
}

func hyprpaperWallpaper(path string) error {
	out, err := exec.Command("hyprctl", "hyprpaper", "wallpaper", ",contain:"+path).Output()
	if err != nil {
		return err
	}
	return checkHyprctlError(out)
}

func hyprpaperUnloadAll() error {
	out, err := exec.Command("hyprctl", "hyprpaper", "unload", "unused").Output()
	if err != nil {
		return err
	}
	return checkHyprctlError(out)
}

func checkHyprctlError(out []byte) error {
	str := string(out)
	if str != "ok\n" {
		return errors.New(str)
	}
	return nil
}