<?php
/**
 * System info endpoint.
 *
 * @package Recast\WCS
 */

namespace Recast\WCS\Rest;

use Recast\WCS\Admin\Settings;
use Recast\WCS\Compat\Hpos;
use Recast\WCS\Install\Installer;

defined( 'ABSPATH' ) || exit;

/**
 * GET /system: versions, storage mode and background queue health.
 */
final class SystemController extends AbstractController {

	/**
	 * {@inheritdoc}
	 *
	 * @return void
	 */
	public function register_routes() {
		$this->route(
			'/system',
			array(
				'methods'  => \WP_REST_Server::READABLE,
				'callback' => array( $this, 'get_system' ),
			)
		);
	}

	/**
	 * Handles GET /system.
	 *
	 * @return \WP_REST_Response
	 */
	public function get_system() {
		$queue = array(
			'pending' => null,
			'failed'  => null,
		);
		if ( function_exists( 'as_get_scheduled_actions' ) ) {
			$queue['pending'] = count(
				as_get_scheduled_actions(
					array(
						'group'    => Installer::GROUP,
						'status'   => 'pending',
						'per_page' => 500,
					),
					'ids'
				)
			);
			$queue['failed']  = count(
				as_get_scheduled_actions(
					array(
						'group'    => Installer::GROUP,
						'status'   => 'failed',
						'per_page' => 500,
					),
					'ids'
				)
			);
		}

		$info = array(
			'plugin'          => RECAST_VERSION,
			'dbVersion'       => (int) get_option( Installer::OPTION_DB_VERSION, 0 ),
			'wordpress'       => get_bloginfo( 'version' ),
			'php'             => PHP_VERSION,
			'woocommerce'     => defined( 'WC_VERSION' ) ? WC_VERSION : null,
			'subscriptions'   => class_exists( 'WC_Subscriptions' ) ? (string) \WC_Subscriptions::$version : null,
			'hpos'            => Hpos::is_enabled(),
			'actionScheduler' => function_exists( 'as_enqueue_async_action' ),
			'queue'           => $queue,
			'settings'        => array_combine(
				array_map(
					static function ( $key ) {
						return substr( $key, strlen( 'recast_' ) );
					},
					array_keys( Settings::defaults() )
				),
				array_map( array( Settings::class, 'get' ), array_keys( Settings::defaults() ) )
			),
		);
		/**
		 * Filters the system information.
		 *
		 * @param array<string, mixed> $info Information.
		 */
		return $this->respond( apply_filters( 'recast_system_info', $info ) );
	}
}