<?php
/**
 * REST: GET/PUT /airanksuite/v1/crawlers
 *
 * @package AiRankSuite
 */

declare(strict_types=1);

namespace AiRankSuite\Modules\CrawlerControls\Rest;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

use AiRankSuite\Modules\CrawlerControls\CrawlerControlsModule;
use AiRankSuite\Rest\RestController;
use AiRankSuite\Support\Options;
use WP_REST_Request;
use WP_REST_Response;

final class CrawlersController extends RestController {

	public function __construct( private Options $options ) {}

	public function register_routes(): void {
		register_rest_route(
			self::NAMESPACE,
			'/crawlers',
			array(
				array(
					'methods'             => 'GET',
					'callback'            => array( $this, 'get' ),
					'permission_callback' => static fn(): bool => current_user_can( 'manage_options' ),
				),
				array(
					'methods'             => 'PUT',
					'callback'            => array( $this, 'update' ),
					'permission_callback' => static fn(): bool => current_user_can( 'manage_options' ),
					'args'                => array(
						'enabled' => array( 'type' => 'boolean' ),
						'blocked' => array( 'type' => 'array' ),
						'log'     => array( 'type' => 'boolean' ),
						'enforce' => array( 'type' => 'boolean' ),
					),
				),
			)
		);

		// Read the robots.txt the site really serves and check the rules are
		// in it. Writing a rule and serving it are different things.
		register_rest_route(
			self::NAMESPACE,
			'/crawlers/verify',
			array(
				'methods'             => 'POST',
				'permission_callback' => static function () {
							if ( ! current_user_can( 'manage_options' ) ) {
								return self::forbidden();
							}
							return self::spend( 'crawlerverify', 60 );
						},
				'callback'            => function () {
					$settings = $this->options->get( 'crawler_controls', CrawlerControlsModule::defaults() );
					return new WP_REST_Response(
						\AiRankSuite\Modules\CrawlerControls\Services\CrawlerLog::verify( (array) $settings['blocked'] )
					);
				},
			)
		);

		register_rest_route(
			self::NAMESPACE,
			'/crawlers/traffic',
			array(
				'methods'             => 'DELETE',
				'permission_callback' => static fn(): bool => current_user_can( 'manage_options' ),
				'callback'            => function () {
					\AiRankSuite\Modules\CrawlerControls\Services\CrawlerLog::reset();
					$settings = $this->options->get( 'crawler_controls', CrawlerControlsModule::defaults() );
					return new WP_REST_Response(
						\AiRankSuite\Modules\CrawlerControls\Services\CrawlerLog::report( (array) $settings['blocked'] )
					);
				},
			)
		);
	}

	public function get(): WP_REST_Response {
		$settings = $this->options->get( 'crawler_controls', CrawlerControlsModule::defaults() );
		$physical = file_exists( trailingslashit( ABSPATH ) . 'robots.txt' );

		return new WP_REST_Response(
			array(
				'settings'            => $settings,
				'bots'                => CrawlerControlsModule::bots(),
				'robots_url'          => home_url( '/robots.txt' ),
				'physical_robots_txt' => $physical,
				// What actually arrived, so the matrix is a set of decisions
				// with evidence behind them rather than guesses.
				'traffic'             => \AiRankSuite\Modules\CrawlerControls\Services\CrawlerLog::report(
					(array) $settings['blocked']
				),
			)
		);
	}

	public function update( WP_REST_Request $request ): WP_REST_Response {
		$defaults = CrawlerControlsModule::defaults();
		$values   = array();
		if ( $request->has_param( 'enabled' ) ) {
			$values['enabled'] = (bool) $request->get_param( 'enabled' );
		}
		if ( $request->has_param( 'blocked' ) ) {
			$known             = array_keys( CrawlerControlsModule::bots() );
			$values['blocked'] = array_values( array_intersect( (array) $request->get_param( 'blocked' ), $known ) );
		}
		$this->options->set( 'crawler_controls', $values, $defaults );
		return $this->get();
	}
}