package main

import (
	"golang.org/x/image/webp"
	"image/png"
	"io"
	"log"
	"os"
)

func main() {
	var (
		inFile  io.Reader
		outFile io.Writer
	)

	iFile, err := os.OpenFile("/home/debuggerx/Pictures/test.webp", os.O_RDONLY, 0)
	if err != nil {
		log.Fatal(err)
	}
	defer iFile.Close()
	inFile = iFile

	oFile, err := os.OpenFile("/home/debuggerx/Pictures/test.png", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 666)
	if err != nil {
		log.Fatal(err)
	}
	defer oFile.Close()
	outFile = oFile

	m, err := webp.Decode(inFile)
	if err != nil {
		log.Fatal(err)
	}

	err = png.Encode(outFile, m)
	if err != nil {
		log.Fatal(err)
	}
}