updates

Former-commit-id: 9c36dea485ddd16a90f0a615e20baddaee6b9cde

http_assets.go

@@ -0,0 +1,49 @@
+package filemanager
+
+import (
+	"errors"
+	"mime"
+	"net/http"
+	"path/filepath"
+	"strings"
+)
+
+// AssetsURL is the url of the assets
+const AssetsURL = "/_filemanagerinternal"
+
+// Serve provides the needed assets for the front-end
+func serveAssets(w http.ResponseWriter, r *http.Request, m *FileManager) (int, error) {
+	// gets the filename to be used with Assets function
+	filename := strings.Replace(r.URL.Path, m.BaseURL+AssetsURL, "", 1)
+
+	var file []byte
+	var err error
+
+	switch {
+	case strings.HasPrefix(filename, "/css"):
+		filename = strings.Replace(filename, "/css/", "", 1)
+		file, err = m.Assets.CSS.Bytes(filename)
+	case strings.HasPrefix(filename, "/js"):
+		filename = strings.Replace(filename, "/js/", "", 1)
+		file, err = m.Assets.requiredJS.Bytes(filename)
+	case strings.HasPrefix(filename, "/vendor"):
+		filename = strings.Replace(filename, "/vendor/", "", 1)
+		file, err = m.Assets.JS.Bytes(filename)
+	default:
+		err = errors.New("not found")
+	}
+
+	if err != nil {
+		return http.StatusNotFound, nil
+	}
+
+	// Get the file extension and its mimetype
+	extension := filepath.Ext(filename)
+	mediatype := mime.TypeByExtension(extension)
+
+	// Write the header with the Content-Type and write the file
+	// content to the buffer
+	w.Header().Set("Content-Type", mediatype)
+	w.Write(file)
+	return 200, nil
+}