<?php
/**
 * Sensor: Register
 *
 * Register sensor class file.
 *
 * @since      4.6.0
 * @package    wsal
 * @subpackage sensors
 */

declare(strict_types=1);

namespace WSAL\WP_Sensors;

use WSAL\Helpers\WP_Helper;
use WSAL\Helpers\Settings_Helper;
use WSAL\Controllers\Alert_Manager;

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( '\WSAL\WP_Sensors\WP_Register_Sensor' ) ) {
	/**
	 * User registration sensor.
	 *
	 * 4000 New user was created on WordPress
	 *
	 * @package    wsal
	 * @subpackage sensors
	 */
	class WP_Register_Sensor {

		/**
		 * Is that a login sensor or not?
		 * Sensors doesn't need to have this property, except where they explicitly not to set that value.
		 *
		 * @var boolean
		 *
		 * @since 4.5.0
		 */
		private static $login_sensor = true;

		/**
		 * Inits the main hooks
		 *
		 * @return void
		 *
		 * @since 4.5.0
		 */
		public static function init() {
			/*
			 * Default WordPress registration utilizes action 'register_new_user', but we cannot rely on it to detect
			 * a front-end registration implemented by a third party. We hook into the action 'user_register' because it is
			 * part of the function 'wp_insert_user' that definitely runs.
			 */
			add_action( 'user_register', array( __CLASS__, 'event_user_register' ), 10, 1 );
		}

		/**
		 * Is that a front end sensor? The sensors doesn't need to have that method implemented, except if they want to specifically set that value.
		 *
		 * @return boolean
		 *
		 * @since 4.5.0
		 */
		public static function is_login_sensor() {
			return self::$login_sensor;
		}

		/**
		 * That needs to be registered as a frontend sensor, when the admin sets the plugin to monitor the login from 3rd parties.
		 *
		 * @return boolean
		 *
		 * @since 4.5.1
		 */
		public static function is_frontend_sensor(): bool {
			$frontend_events = Settings_Helper::get_frontend_events();
			$should_load     = ! empty( $frontend_events['register'] ) || ! empty( $frontend_events['login'] ) || ! empty( $frontend_events['woocommerce'] );

			if ( $should_load ) {
				return true;
			}

			return false;
		}

		/**
		 * When a user registers, action 'user_register' is fired because it is part of the function 'wp_insert_user'. We
		 * can assume event 4000 if the current session is not logged in.
		 *
		 * @param int $user_id - User ID of the registered user.
		 *
		 * @since 4.5.0
		 */
		public static function event_user_register( $user_id ) {
			if ( is_user_logged_in() ) {
				// We bail if the user is logged in. That is no longer user registration, but user creation.
				return;
			}

			$user = get_userdata( $user_id );
			if ( ! $user instanceof \WP_User ) {
				// Bail if the user is not valid for some reason.
				return;
			}

			$new_user_data = array(
				'Username' => $user->user_login,
				'Roles'    => is_array( $user->roles ) ? implode( ', ', $user->roles ) : $user->roles,
			);

			$event_data = array(
				'NewUserID'    => $user_id,
				'NewUserData'  => (object) $new_user_data,
				'EditUserLink' => add_query_arg( 'user_id', $user_id, admin_url( 'user-edit.php' ) ),
			);

			if ( WP_Helper::is_multisite() ) {
				// Registration should not be logged on multisite if event 4024 is fired.
				Alert_Manager::trigger_event_if(
					4000,
					$event_data,
					/**
					* Don't log if event 4024 is fired.
					*/
					function () {
						return ! Alert_Manager::will_trigger( 4013 );
					}
				);
			} else {
				Alert_Manager::trigger_event( 4000, $event_data, true );
			}
		}
	}
}
