valid url len

url.go

@@ -22,7 +22,9 @@ var (
 func TrimUrlForScylla(fullUrl string) (scyllaUrl string, hostName string, err error) {
 
 	trimmedUrl := strings.TrimSpace(fullUrl)
-
+	if len(trimmedUrl) == 0 {
+		return "", "", ErrInvalidUrl
+	}
 	//remove everything behind ? or #
 	if index := strings.Index(trimmedUrl, "?"); index > 0 {
 		trimmedUrl = trimmedUrl[0:index]
@@ -35,9 +37,14 @@ func TrimUrlForScylla(fullUrl string) (scyllaUrl string, hostName string, err er
 	if trimmedUrl[len(trimmedUrl)-1:] != "/" {
 		trimmedUrl = trimmedUrl + "/"
 	}
-	trimmedUrl = strings.Replace(trimmedUrl, "http://", "https://", 1)
 
-	if len(trimmedUrl) < 9 {
+	if strings.Index(trimmedUrl, "http") == -1 {
+		trimmedUrl = "https://" + trimmedUrl
+	} else {
+		trimmedUrl = strings.Replace(trimmedUrl, "http://", "https://", 1)
+	}
+
+	if len(trimmedUrl) < 11 {
 		return "", "", ErrInvalidUrl
 	}
 	host := trimmedUrl[8:]

url_test.go

@@ -238,6 +238,11 @@ func TestTrimUrlForScylla(t *testing.T) {
 			wantUrl:  "https://www.gala.de/amp/lifestyle/film-tv-musik/joko-winterscheidt--er-holt-sich-seine-show-zurueck-24032084.html&amp_tf=Von %1$s&aoh=17095534826758&csi=1&referrer=https://www.google.com&ampshare=https://www.gala.de/lifestyle/film-tv-musik/joko-winterscheidt-siegt-gegen-klaas-und-holt-sich-seine-show-zurueck-24032084.html/",
 			wantHost: "www.gala.de",
 		},
+		{
+			fullUrl:  "www.gala.de",
+			wantUrl:  "https://www.gala.de/",
+			wantHost: "www.gala.de",
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.fullUrl, func(_ *testing.T) {