<?php
/**
 * Settings REST.
 *
 * @package Bloatwright
 */

namespace Bloatwright\Rest;

use Bloatwright\Profiler\Owner;
use Bloatwright\Services\LoaderInstaller;
use Bloatwright\Services\PrefixRegistry;
use Bloatwright\Services\Settings;
use Bloatwright\Services\UrlSet;

/**
 * /settings.
 */
class SettingsController extends BaseController {

	/**
	 * Routes.
	 */
	public function register_routes(): void {
		$this->route(
			'/settings',
			array(
				array(
					'methods'             => 'GET',
					'callback'            => array( $this, 'get' ),
					'permission_callback' => array( $this, 'permission' ),
				),
				array(
					'methods'             => 'POST, PATCH',
					'callback'            => array( $this, 'save' ),
					'permission_callback' => array( $this, 'permission' ),
					'args'                => self::save_args(),
				),
			)
		);
		$this->route(
			'/settings/loader',
			array(
				'methods'             => 'DELETE',
				'callback'            => array( $this, 'remove_loader' ),
				'permission_callback' => array( $this, 'permission' ),
			)
		);
	}

	/**
	 * Arguments accepted when saving. Every one is optional; numbers outside their range are clamped
	 * by Settings::sanitize().
	 *
	 * @return array<string, array<string, mixed>>
	 */
	private static function save_args(): array {
		$typed   = static function ( string $type, array $extra = array() ): array {
			return array_merge(
				array(
					'type'              => $type,
					'sanitize_callback' => 'rest_sanitize_request_arg',
					'validate_callback' => 'rest_validate_request_arg',
				),
				$extra
			);
		};
		$strings = array( 'items' => array( 'type' => 'string' ) );
		return array(
			'passes'         => $typed( 'integer' ),
			'timeout'        => $typed( 'integer' ),
			'history'        => $typed( 'integer' ),
			'cookie_ttl'     => $typed( 'integer' ),
			'mode'           => $typed( 'string', array( 'enum' => array( 'auto', 'browse' ) ) ),
			'remote_head'    => $typed( 'boolean' ),
			'warmup'         => $typed( 'boolean' ),
			'keep_data'      => $typed( 'boolean' ),
			'urls'           => $typed( 'array', $strings ),
			'expected_slugs' => $typed( 'array', $strings ),
			'overrides'      => $typed( 'object', array( 'additionalProperties' => array( 'type' => 'string' ) ) ),
		);
	}

	/**
	 * View.
	 */
	private function view(): array {
		if ( ! function_exists( 'get_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php'; // Lists installed but inactive plugins as owners too.
		}
		$owner  = new Owner();
		$owners = array();
		foreach ( $owner->all() as $k => $d ) {
			if ( in_array( $d['type'], array( 'plugin', 'inactive', 'theme', 'mu' ), true ) ) {
				$owners[] = array(
					'key'  => $k,
					'name' => $d['name'],
				);
			}
		}
		return Settings::get_all() + LoaderInstaller::status() + array(
			'overrides'        => (array) get_option( 'bloatwright_overrides', array() ),
			'owners'           => $owners,
			'default_urls'     => UrlSet::defaults(),
			'registry_version' => PrefixRegistry::version(),
		);
	}

	/**
	 * Get.
	 */
	public function get(): \WP_REST_Response {
		return new \WP_REST_Response( $this->view() );
	}

	/**
	 * Remove the must-use loader (it is written again when the next profiling run starts).
	 */
	public function remove_loader(): \WP_REST_Response {
		LoaderInstaller::remove();
		return new \WP_REST_Response( $this->view() );
	}

	/**
	 * Save.
	 *
	 * @param \WP_REST_Request $request Request.
	 */
	public function save( \WP_REST_Request $request ): \WP_REST_Response {
		$params = $request->get_json_params();
		$params = $params ? $params : $request->get_body_params();
		if ( isset( $params['overrides'] ) ) {
			$clean = array();
			foreach ( (array) $params['overrides'] as $dir => $key ) {
				$dir = sanitize_text_field( (string) $dir );
				$key = sanitize_text_field( (string) $key );
				if ( '' !== $dir && '' !== $key ) {
					$clean[ $dir ] = $key;
				}
			}
			update_option( 'bloatwright_overrides', $clean, false );
			unset( $params['overrides'] );
		}
		Settings::update( (array) $params );
		return new \WP_REST_Response( $this->view() );
	}
}