router_static.go: prefix JS with Origin

api/router_static.go

@@ -14,21 +14,46 @@ func redirectLogin(w http.ResponseWriter, r *http.Request) {
 	http.Redirect(w, r, "/login", 301)
 }
 
+type staticAssetPlugs struct {
+	Origin string
+}
+
 type staticHtmlPlugs struct {
 	CdnPrefix string
 }
 
 func initStaticRouter(router *mux.Router) error {
-	for _, path := range []string{"js", "css", "images"} {
-		router.PathPrefix("/" + path + "/").HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			f, err := os.Stat("." + r.URL.Path)
-			if err != nil || f.IsDir() {
-				http.NotFound(w, r)
+	asset := make(map[string]string)
+
+	for _, dir := range []string{"js", "css", "images"} {
+		files, err := ioutil.ReadDir("./" + dir)
+		if err != nil {
+			logger.Errorf("cannot read directory ./%s: %v", dir, err)
+			return err
 		}
 
-			http.ServeFile(w, r, "."+r.URL.Path)
+		for _, file := range files {
+			sl := string(os.PathSeparator)
+			path := sl + dir + sl + file.Name()
+
+			contents, err := ioutil.ReadFile("." + path)
+			if err != nil {
+				logger.Errorf("cannot read file %s: %v", path, err)
+				return err
+			}
+
+			if dir == "js" {
+				asset[path] = "window.API='" + os.Getenv("ORIGIN") + "/api';" + string(contents)
+			} else {
+				asset[path] = string(contents)
+			}
+
+			logger.Debugf("routing %s", path)
+			router.HandleFunc(path, func(w http.ResponseWriter, r *http.Request) {
+				fmt.Fprint(w, asset[r.URL.Path])
 			})
 		}
+	}
 
 	pages := []string{
 		"login",