app/controllers/url.go


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package controllers

import (
	"crypto/md5"
	"fmt"
	"io"
	"io/ioutil"
	"net/http"
)

func HashUrl(url string) (string, error) {
	response, err := http.Get(url)
	if err != nil {
		return "Get request failed.", err
	}

	defer response.Body.Close()
	contents, err := ioutil.ReadAll(response.Body)
	if er != nil {
		return "Reading body failed.", err
	}

	h := md5.New()
	io.WriteString(h, string(contents))
	hash := fmt.Sprintf("%x", h.Sum(nil))

	return hash, nil
}