feat: add Reverb realtime messaging

app/Events/MessageRead.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace App\Events;
+
+use App\Models\Conversation;
+use App\Models\ConversationParticipant;
+use App\Models\User;
+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 MessageRead implements ShouldBroadcast
+{
+    use Dispatchable, InteractsWithSockets, SerializesModels;
+
+    public bool $afterCommit = true;
+    public string $queue;
+
+    public function __construct(
+        public Conversation $conversation,
+        public ConversationParticipant $participant,
+        public User $reader,
+    ) {
+        $this->queue = (string) config('messaging.broadcast.queue', 'broadcasts');
+        $this->dontBroadcastToCurrentUser();
+    }
+
+    public function broadcastOn(): array
+    {
+        return [new PrivateChannel('conversation.' . $this->conversation->id)];
+    }
+
+    public function broadcastAs(): string
+    {
+        return 'message.read';
+    }
+
+    public function broadcastWith(): array
+    {
+        return [
+            'event' => 'message.read',
+            'conversation_id' => (int) $this->conversation->id,
+            'user' => app(MessagingPayloadFactory::class)->userSummary($this->reader),
+            'last_read_message_id' => $this->participant->last_read_message_id ? (int) $this->participant->last_read_message_id : null,
+            'last_read_at' => optional($this->participant->last_read_at)?->toIso8601String(),
+        ];
+    }
+}