highlight mentions

app/routes/api.py

@@ -19,3 +19,15 @@ def babycode_preview():
         return {'error': 'banned_tags field is invalid type'}, 400
     rendered = babycode_to_html(markup, banned_tags).result
     return {'html': rendered}
+
+@bp.get('/whoami/')
+def whoami():
+    user = get_active_user()
+    if not user:
+        return {}
+
+    return {
+        'id': user.id,
+        'username': user.username,
+        'display_name': user.display_name,
+    }