feat: add first metadata implementation

lib/utils.go

@@ -1,6 +1,7 @@
 package lib
 
 import (
+	"errors"
 	"strings"
 )
 
@@ -12,7 +13,7 @@ const (
 	UrlTypeInvalid
 )
 
-func GetUrlType(url string) UrlType {
+func ParseUrlType(url string) UrlType {
 	if strings.Contains(url, "https://open.spotify.com/track") {
 		return UrlTypeTrack
 	}
@@ -23,3 +24,13 @@ func GetUrlType(url string) UrlType {
 
 	return UrlTypeInvalid
 }
+
+func ParseTrackId(url string) (string, error) {
+	tmp := strings.Split(url, "/")
+
+	if len(tmp) == 0 {
+		return "", errors.New("Invalid URL.")
+	}
+
+	return tmp[len(tmp)-1], nil
+}