[5.x] Allow sorting folders in asset browser (#10935)

src/Assets/AssetFolder.php

@@ -97,6 +97,17 @@ public function lastModified()
         return $date;
     }
 
+    public function size()
+    {
+        $size = 0;
+
+        foreach ($this->assets() as $asset) {
+            $size += $asset->size();
+        }
+
+        return $size;
+    }
+
     public function save()
     {
         $this->disk()->put($this->path().'/.gitkeep', '');

src/Http/Controllers/CP/Assets/BrowserController.php

@@ -4,6 +4,7 @@
 
 use Illuminate\Http\Request;
 use Illuminate\Pagination\Paginator;
+use Statamic\Assets\AssetFolder;
 use Statamic\Contracts\Assets\AssetContainer as AssetContainerContract;
 use Statamic\Exceptions\AuthorizationException;
 use Statamic\Facades\Asset;
@@ -90,10 +91,24 @@ public function folder(Request $request, $container, $path = '/')
         if ($page >= $lastFolderPage) {
             $query = $folder->queryAssets();
 
-            if ($request->sort) {
+            if ($sort = $request->sort) {
+                $sortByMethod = $request->order === 'desc' ? 'sortByDesc' : 'sortBy';
+
+                $folders = $folders->$sortByMethod(
+                    fn (AssetFolder $folder) => method_exists($folder, $sort) ? $folder->$sort() : $folder->basename()
+                );
+
                 $query->orderBy($request->sort, $request->order ?? 'asc');
             } else {
-                $query->orderBy($container->sortField(), $container->sortDirection());
+                $sort = $container->sortField();
+                $order = $container->sortDirection();
+                $sortByMethod = $request->order === 'desc' ? 'sortByDesc' : 'sortBy';
+
+                $folders = $folders->$sortByMethod(
+                    fn (AssetFolder $folder) => method_exists($folder, $sort) ? $folder->$sort() : $folder->basename()
+                );
+
+                $query->orderBy($sort, $order);
             }
 
             $this->applyQueryScopes($query, $request->all());