Restricts processing public shares to diagrams only [#133]

Author: davidjgraph

appinfo/info.xml

@@ -15,7 +15,7 @@
 - Supports public share links (read-only and editable)
 - Offline mode for privacy-sensitive deployments
 - Configurable editor URL for self-hosted diagrams.net instances]]></description>
-    <version>4.2.2</version>
+    <version>4.2.3</version>
     <licence>agpl</licence>
     <author>draw.io Ltd</author>
     <namespace>Drawio</namespace>

js/main.js

@@ -1,7 +1,7 @@
 {
     "name": "drawio",
     "description": "Integrates draw.io diagrams editor with Nextcloud",
-    "version": "4.2.2",
+    "version": "4.2.3",
     "author": "draw.io Ltd",
 
     "license": "agpl",

package.json

@@ -83,13 +83,23 @@ $(function ()
 {
     OCA.DrawIO.init();
 
-    // Sometimes the file doesn't open, so we add a delayed attempt as well
-    setTimeout(() => 
+    // On public share pages, auto-open if the shared file is a diagram
+    setTimeout(async () =>
     {
         if (window.location.pathname.startsWith('/s/'))
         {
-            // TODO Add whiteboard support for public shares
-            OCA.DrawIO.OpenEditor(null, false);
+            var shareToken = getSharingToken();
+            if (!shareToken) return;
+
+            try {
+                var url = generateUrl('/apps/' + OCA.DrawIO.AppName + '/ajax/getFileInfo?shareToken={shareToken}', { shareToken: shareToken });
+                var response = await $.get(url);
+                if (response && (response.mime === 'application/x-drawio' || response.mime === 'application/x-drawio-wb')) {
+                    OCA.DrawIO.OpenEditor(null, response.mime === 'application/x-drawio-wb');
+                }
+            } catch (e) {
+                // Not a diagram file or share not accessible — don't redirect
+            }
         }
     }, 10000);
 });