<?php

namespace App\Actions;

use App\Models\Inbox;
use App\Models\User;
use DB;

final readonly class CreateOrGetInboxAction
{
    /**
     *
     * @throws \Throwable
     */
    public function execute(User $recipient, User $sender): Inbox
    {
        $existingInbox = Inbox::whereHas('users', fn($q) => $q->where('id', $sender->id))
            ->whereHas('users', fn($q) => $q->where('id', $recipient->id))
            ->first();

        if ($existingInbox) {
            return $existingInbox;
        }

        return DB::transaction(function () use ($sender, $recipient) {
            $inbox = Inbox::create();
            $inbox->users()->attach([$sender->id, $recipient->id]);

            return $inbox;
        }, 2);
    }
}