<?php
declare(strict_types=1);

namespace Operanse\Agent\Capabilities;

defined( 'ABSPATH' ) || exit;

use Operanse\Agent\Hooks\ChangeHooks;

final class GetRecentChanges extends AbstractCapability {
	public function name(): string {
		return 'get_recent_changes';
	}

	public function validate( array $params ): array {
		return array(
			'limit'         => Registry::int_param( $params, 'limit', 25, 1, 100 ),
			'offset'        => Registry::int_param( $params, 'offset', 0, 0, 10000 ),
			'since_minutes' => Registry::int_param( $params, 'since_minutes', 10080, 1, 43200 ),
		);
	}

	public function execute( array $params, float $deadline ): array {
		$list  = get_option( ChangeHooks::OPTION_LOCAL_CHANGES, array() );
		$list  = is_array( $list ) ? $list : array();
		$since = time() - $params['since_minutes'] * 60;
		$items = array_values( array_filter( $list, static fn( mixed $e ): bool => is_array( $e ) && (int) ( $e['at'] ?? 0 ) >= $since ) );
		usort( $items, static fn( array $a, array $b ): int => (int) $b['at'] <=> (int) $a['at'] );
		$page = array_slice( $items, $params['offset'], $params['limit'] );
		foreach ( $page as &$e ) {
			$e['at'] = gmdate( 'Y-m-d\TH:i:s\Z', (int) $e['at'] );
		}
		return array( 'items' => $page, 'total' => count( $items ) );
	}
}