Update channels.php

routes/channels.php

@@ -1,6 +1,8 @@
 <?php
 
 use Illuminate\Support\Facades\Broadcast;
+use App\Models\ResearchSpace;
+use App\Models\ResearchSpaceCollaborator;
 
 /*
 |--------------------------------------------------------------------------
@@ -14,3 +16,23 @@
 */
 
 Broadcast::channel('App.Models.User.{id}', fn($user, $id): bool => (int) $user->id === (int) $id);
+
+// Channel for ResearchSpace real-time updates.
+// A user may listen if they are the owner or a collaborator on the space.
+Broadcast::channel('research-space.{id}', function ($user, $id) {
+    try {
+        $space = ResearchSpace::find($id);
+        if (! $space) {
+            return false;
+        }
+        if ($space->owner_id === $user->id) {
+            return true;
+        }
+
+        return ResearchSpaceCollaborator::where('research_space_id', $id)
+            ->where('user_id', $user->id)
+            ->exists();
+    } catch (\Throwable $e) {
+        return false;
+    }
+});