<?php
/**
 * Holds the Front class
 *
 * @package administrator-only
 */

namespace Admon\Includes;

if ( ! class_exists( 'Front' ) ) {
	/**
	 * Handles the protection on the front end pages
	 */
	class Front {
		/**
		 * Construct the class
		 */
		public function __construct() {
			add_action( 'template_redirect', array( $this, 'check_for_access' ) );
		}

		/**
		 * Check if the access should be restricted and redirect the user if they don't have access
		 *
		 * @since 1.0.0
		 *
		 * @return void
		 */
		public function check_for_access(): void {
			$allowed_pages = $this->get_allowed_pages();

			if ( $this->is_setting_enabled() ) {
				/**
				 * Before front end redirection
				 *
				 * Run before the front end redirection
				 *
				 * @since 1.0.0
				 */
				do_action( 'admon_before_front_redirection' );

				if ( ! in_array( $GLOBALS['pagenow'], $allowed_pages, true ) && ! defined( 'REST_REQUEST' ) ) {
					if ( ! is_user_logged_in() || ! current_user_can( 'manage_options' ) ) {
						wp_redirect( get_option( 'admon_front_end_link' ) );
						exit;
					}
				}
			}
		}

		/**
		 * Check if the front end protection is enabled
		 *
		 * @since 1.0.0
		 *
		 * @return bool
		 */
		private function is_setting_enabled(): bool {
			$setting = get_option( 'admon_front_end' );

			if ( 'true' === $setting ) {
				return true;
			}

			return false;
		}

		/**
		 * Return an array of the slugs of the allowed pages
		 *
		 * @since 1.0.0
		 *
		 * @return string[]
		 */
		private function get_allowed_pages(): array {
			$allowed_pages = array(
				'wp-login.php',
				'wp-admin',
			);

			$setting = get_option( 'admon_excluded_pages' );

			if ( ! empty( $setting ) ) {
				$pages = json_decode( $setting );

				foreach ( $pages as $page ) {
					$permalink = get_permalink( $page );

					if ( $permalink ) {
						$allowed_pages[] = $permalink;
					}
				}
			}

			return $allowed_pages;
		}
	}

	new Front();
}