basic site design, directory path reading, uuid setup, file icon mimetype categorization

viewer/helpers.py

@@ -0,0 +1,8 @@
+def get_mediatype(mimetype: str) -> str:
+    """Simple media type categorization based on the given mimetype"""
+    if mimetype is not None:
+        if mimetype.startswith('image'):
+            return 'image'
+        elif mimetype.startswith('video'):
+            return 'video'
+    return 'file'