rag/app/Events/Streaming.php

<?php

namespace App\Events;

use App\Models\Message;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Contracts\Broadcasting\ShouldBroadcastNow;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Queue\SerializesModels;

class Streaming implements ShouldBroadcastNow
{
    use Dispatchable, InteractsWithSockets, SerializesModels;

    public readonly string $chunk;
    public readonly int $index;

    /**
     * Create a new event instance.
     */
    public function __construct(private readonly Message $message, string $chunk, int $index)
    {
        $this->chunk = $chunk;
        $this->index = $index;
    }

    /**
     * Get the channels the event should broadcast on.
     *
     * @return array<int, \Illuminate\Broadcasting\Channel>
     */
    public function broadcastOn(): array
    {
        return [new PrivateChannel('App.Models.Message.' . $this->message->id)];
    }

    public function broadcastAs(): string
    {
        return 'Streaming';
    }
}