eatvio-infra/app/Messages/ChatMessage.php

<?php

namespace App\Messages;

use App\Models\Chat;
use App\Models\User;
use Faker\Factory as FakerFactory;

class ChatMessage
{
    public int $id;

    public mixed $payload;

    public function __construct(int $id, mixed $payload)
    {
        $this->id = $id;
        $this->payload = $payload;
    }

    public function someRandomFillFunction(): void
    {

        $users1 = User::all()->pluck('id');
        $users2 = User::all()->pluck('id');
        $faker = FakerFactory::create();

        $users1->each(
            function ($user1) use ($faker, $users2) {
                $users2->each(
                    function ($user2) use ($faker, $user1) {
                        if ($user1 === $user2) {
                            return;
                        }
                        $data1 = [
                            'from_user_id' => $user2,
                            'to_user_id' => $user1,
                            'data' => $faker->text(),
                        ];

                        $data2 = [
                            'from_user_id' => $user1,
                            'to_user_id' => $user2,
                            'data' => $faker->text(),
                        ];

                        $newMessage = (new Chat())->forceFill($data1);
                        $newMessage->save();
                        $newMessage = (new Chat())->forceFill($data2);
                        $newMessage->save();
                    }
                );
            }
        );
    }
}