<?php

declare(strict_types=1);

namespace LinkCheckup\Features\LinkLists;

use LinkCheckup\Shared\Links\Link;
use LinkCheckup\Shared\Links\LinkLookup;
use WP_REST_Request;

use function is_numeric;

final class RequestedLink {

	private const ID_PARAMETER = 'id';

	public function __construct( private LinkLookup $link_lookup ) {
	}

	/** @param WP_REST_Request<array<string, mixed>> $request */
	public function find( WP_REST_Request $request ): Link|null {
		$requested_id = $request->get_param( self::ID_PARAMETER );

		if ( ! is_numeric( $requested_id ) ) {
			return null;
		}

		return $this->link_lookup->find( (int) $requested_id );
	}
}