hide the empty "..." menu button on BoxSet detail pages for guests

Jellyfin.Plugin.ShareLinks/Web/sharelinks.js

@@ -338,6 +338,29 @@
     return guestStatePromise;
   }
 
+  function hideEmptyMoreButtonOnBoxSet() {
+    var button = document.querySelector(".btnMoreCommands.detailButton");
+    if (!button) {
+      return;
+    }
+
+    var itemId = parseItemIdFromUrl() || findItemIdInDocument();
+    var id = itemId ? itemId.toLowerCase() : "";
+    var type =
+      id && Object.prototype.hasOwnProperty.call(itemTypeCache, id)
+        ? itemTypeCache[id]
+        : null;
+
+    if (type === "boxset") {
+      button.setAttribute("data-sharelinks-hidden-boxset", "1");
+      button.style.setProperty("display", "none", "important");
+    } else if (button.getAttribute("data-sharelinks-hidden-boxset") === "1") {
+      // Route changed away from a BoxSet page (SPA navigation): restore it.
+      button.removeAttribute("data-sharelinks-hidden-boxset");
+      button.style.removeProperty("display");
+    }
+  }
+
   function hideBlockedGuestMenuItems() {
     var nodes = document.querySelectorAll(".actionSheetMenuItem");
     Array.prototype.forEach.call(nodes, function (node) {
@@ -382,11 +405,24 @@
     hideGuestControls();
     hideBlockedGuestMenuItems();
 
+    var pageItemId = parseItemIdFromUrl() || findItemIdInDocument();
+    if (pageItemId && isItemGuid(pageItemId)) {
+      var id = pageItemId.toLowerCase();
+      if (
+        !Object.prototype.hasOwnProperty.call(itemTypeCache, id) &&
+        !itemTypeInFlight[id]
+      ) {
+        itemTypeInFlight[id] = fetchItemType(id); // populates itemTypeCache, then calls scheduleWork()
+      }
+    }
+    hideEmptyMoreButtonOnBoxSet();
+
     // UX-only lockdown: the guest user's real access boundary is still the
     // server-side policy and item tags. This just keeps the web client out
     // of the user's way, while still letting the guest browse into the
     // shared tree (series -> season -> episode) when the server says the
     // item is visible to them.
+
     if (!context.allowedItemId) {
       return;
     }