Created response function, will return shorten URL

Signed-off-by: viveksahu26 <vivekkumarsahu650@gmail.com>

main.go

@@ -18,6 +18,12 @@ func handleShortUrl(writer http.ResponseWriter, req *http.Request) {
 
 	// save short and long URL to file
 	src.SaveToFile(shortURL, originalURL)
+
+	host := req.Host
+
+	// build Response
+	resp := src.BuildURLResponse(host, shortURL, originalURL)
+	fmt.Println("response: ", resp)
 }
 
 func main() {

src/buildURLresponse.go

@@ -0,0 +1,15 @@
+package src
+
+type URLResponse struct {
+	OriginalURL string `json:"originalURL"`
+	ShortURL    string `json:"shortURL"`
+}
+
+// It returns short URL as response
+func BuildURLResponse(host string, shortURL string, originalURL string) *URLResponse {
+	resp := &URLResponse{
+		OriginalURL: originalURL,
+		ShortURL:    "http://" + host + "/" + shortURL,
+	}
+	return resp
+}