feat: add Reverb realtime messaging

app/Events/ConversationUpdated.php

@@ -0,0 +1,46 @@
+<?php
+
+namespace App\Events;
+
+use App\Models\Conversation;
+use App\Services\Messaging\MessagingPayloadFactory;
+use Illuminate\Broadcasting\InteractsWithSockets;
+use Illuminate\Broadcasting\PrivateChannel;
+use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
+use Illuminate\Foundation\Events\Dispatchable;
+use Illuminate\Queue\SerializesModels;
+
+class ConversationUpdated implements ShouldBroadcast
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    public bool $afterCommit = true;
+    public string $queue;
+
+    public function __construct(
+        public int $userId,
+        public Conversation $conversation,
+        public string $reason,
+    ) {
+        $this->queue = (string) config('messaging.broadcast.queue', 'broadcasts');
+    }
+
+    public function broadcastOn(): array
+    {
+        return [new PrivateChannel('user.' . $this->userId)];
+    }
+
+    public function broadcastAs(): string
+    {
+        return 'conversation.updated';
+    }
+
+    public function broadcastWith(): array
+    {
+        return [
+            'event' => 'conversation.updated',
+            'reason' => $this->reason,
+            'conversation' => app(MessagingPayloadFactory::class)->conversationSummary($this->conversation, $this->userId),
+        ];
+    }
+}