package utils

import (
	"crypto/md5"
	"fmt"
	"io/ioutil"
	"os"
	"runtime"
)

func Md5sum(filepath string) (string, error) {
	f, err := os.Open(filepath)
	if nil != err {
		return "", err
	}
	defer f.Close()

	payload, err := ioutil.ReadAll(f)
	if nil != err {
		return "", err
	}

	md5sum := fmt.Sprintf("%x", md5.Sum(payload))
	runtime.GC()

	return md5sum, nil
}