Add basic auth and fix repair issues

internal/handlers/basicauth.go

@@ -0,0 +1,17 @@
+package handlers
+
+import "net/http"
+
+func (hs *Handlers) basicAuth(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		username, password, ok := r.BasicAuth()
+		if !ok || username != hs.cfg.GetUsername() || password != hs.cfg.GetPassword() {
+			w.Header().Set("WWW-Authenticate", `Basic realm="restricted"`)
+			w.WriteHeader(http.StatusUnauthorized)
+			w.Write([]byte(http.StatusText(http.StatusUnauthorized)))
+			return
+		}
+
+		next.ServeHTTP(w, r)
+	})
+}