// +build ignore

package main

import (
	"encoding/base64"
	"io/ioutil"
	"os"
	"path/filepath"
)

// Reads image.tar and saves as a constant in rootfs.go
func main() {
	wd, err := os.Getwd()
	if err != nil {
		panic(err)
	}
	out, err := os.Create(filepath.Join(wd, "image", "data.go"))
	if err != nil {
		panic(err)
	}
	tarPath := filepath.Join(wd, "image.tar")

	out.Write([]byte("// Package image is autogenerated; DO NOT EDIT DIRECTLY\n"))
	out.Write([]byte("// See generate.go for more info\n"))
	out.Write([]byte("package image\n\n"))
	out.Write([]byte("const (\n"))
	out.Write([]byte("\t// DATA is the image data that is embessed at compile time.\n"))
	out.Write([]byte("\tDATA = `"))
	f, err := ioutil.ReadFile(tarPath)
	if err != nil {
		panic(err)
	}

	tar := base64.StdEncoding.EncodeToString(f)
	out.Write([]byte(tar))

	out.Write([]byte("`\n"))
	out.Write([]byte(")\n"))
}