add simple index

main.go

@@ -62,7 +62,23 @@ func handleUpload(w http.ResponseWriter, r *http.Request) {
 	log.Printf("successfully handled chart %s", path.Base(p))
 }
 
-func handleGet(w http.ResponseWriter, r *http.Request) {
+func handleGetHome(w http.ResponseWriter, r *http.Request) {
+	w.Write([]byte(fmt.Sprintf(`
+<div>
+<h1>Chart Repository</h1>
+<p>
+	To add this repostory to Helm, run:
+<code>
+<pre>
+helm repo add &lt;name&gt; %s
+</pre>
+</code>
+</p>
+</div>
+`, url)))
+}
+
+func handleGetFile(w http.ResponseWriter, r *http.Request) {
 	p := path.Join(dir, r.URL.Path)
 	if st, err := os.Stat(p); os.IsNotExist(err) || st.IsDir() {
 		http.Error(w, "Not Found", http.StatusNotFound)
@@ -86,7 +102,11 @@ func handle(w http.ResponseWriter, r *http.Request) {
 	case "PUT":
 		handleUpload(w, r)
 	case "GET":
-		handleGet(w, r)
+		if r.URL.Path == "/" {
+			handleGetHome(w, r)
+		} else {
+			handleGetFile(w, r)
+		}
 	default:
 		http.Error(w, "Bad Request", http.StatusBadRequest)
 	}