package main

import (
	"fmt"
	"os"

	"github.com/ksrnnb/qrcode"
)

func main() {
	q, err := qrcode.New(qrcode.ECL_Medium, "Hello, World")
	if err != nil {
		fmt.Fprintf(os.Stderr, "cannot be encoded: %v\n", err)
		return
	}

	size := 255
	p, err := q.PNG(size)
	if err != nil {
		fmt.Fprintf(os.Stderr, "png encode error: %v\n", err)
		return
	}

	err = os.WriteFile("qrcode.png", p, 0666)
	if err != nil {
		fmt.Fprintf(os.Stderr, "write file error: %v\n", err)
		return
	}
}