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File: //proc/self/cwd/wp-content/plugins/mainwp-child/class/class-mainwp-child-back-up-wordpress.php
<?php
/**
 * MainWP BackUpWordPress
 *
 * MainWP BackUpWordPress Extension handler.
 * Extension URL: https://mainwp.com/extension/backupwordpress/
 *
 * @package MainWP\Child
 *
 * Credits
 *
 * Plugin-Name: BackUpWordPress
 * Plugin URI: http://bwp.hmn.md/
 * Author: Human Made Limited
 * Author URI: http://hmn.md/
 * Licence: GPL-2+
 */

namespace MainWP\Child;

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

// phpcs:disable PSR1.Classes.ClassDeclaration, WordPress.WP.AlternativeFunctions, Generic.Metrics.CyclomaticComplexity -- required to achieve desired results, pull request solutions appreciated.

/**
 * Class MainWP_Child_Back_Up_WordPress
 *
 * MainWP BackUpWordPress Extension handler.
 */
class MainWP_Child_Back_Up_WordPress {

    /**
     * Public static variable to hold the single instance of the class.
     *
     * @var mixed Default null
     */
    public static $instance = null;

    /**
     * Public variable to hold the infomration if the BackUpWordPress plugin is installed on the child site.
     *
     * @var bool If BackUpWordPress intalled, return true, if not, return false.
     */
    public $is_plugin_installed = false;

    /**
     * Method instance()
     *
     * Create a public static instance.
     *
     * @return mixed Class instance.
     */
    public static function instance() {
        if ( null === self::$instance ) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    /**
     * MainWP_Child_Back_Up_WordPress constructor.
     *
     * Run any time the class is called.
     *
     * @uses is_plugin_active() Determines whether a plugin is active.
     * @see https://developer.wordpress.org/reference/functions/is_plugin_active/
     */
    public function __construct() {
        require_once ABSPATH . 'wp-admin/includes/plugin.php';
        if ( is_plugin_active( 'backupwordpress/backupwordpress.php' ) ) {
            $this->is_plugin_installed = true;
            if ( version_compare( phpversion(), '5.3', '>=' ) ) {
                add_filter( 'mainwp_site_sync_others_data', array( $this, 'sync_others_data' ), 10, 2 );
            }
        }
    }

    /**
     * Method init()
     *
     * Initiate action hooks.
     *
     * @uses get_option() Retrieves an option value based on an option name.
     * @see https://developer.wordpress.org/reference/functions/get_option/
     *
     * @return void
     */
    public function init() {
        if ( version_compare( phpversion(), '5.3', '<' ) ) {
            return;
        }

        if ( ! $this->is_plugin_installed ) {
            return;
        }

        add_action( 'mainwp_child_site_stats', array( $this, 'do_site_stats' ) );

        if ( 'hide' === get_option( 'mainwp_backupwordpress_hide_plugin' ) ) {
            add_filter( 'all_plugins', array( $this, 'all_plugins' ) );
            add_action( 'admin_menu', array( $this, 'remove_menu' ) );
            add_filter( 'site_transient_update_plugins', array( &$this, 'remove_update_nag' ) );
            add_filter( 'mainwp_child_hide_update_notice', array( &$this, 'hide_update_notice' ) );
        }
    }

    /**
     * Remove the BackUpWordPress plugin update notice when the plugin is hidden.
     *
     * @param array $slugs Array containing installed plugins slugs.
     *
     * @return array $slugs Array containing installed plugins slugs.
     */
    public function hide_update_notice( $slugs ) {
        $slugs[] = 'backupwordpress/backupwordpress.php';
        return $slugs;
    }

    /**
     * Remove the BackUpWordPress plugin update notice when the plugin is hidden.
     *
     * @param object $value Object containing update information.
     *
     * @return object $value Object containing update information.
     *
     * @uses \MainWP\Child\MainWP_Helper::is_updates_screen()
     */
    public function remove_update_nag( $value ) {
        if ( MainWP_Helper::is_dashboard_request() ) {
            return $value;
        }

        if ( ! MainWP_Helper::is_updates_screen() ) {
            return $value;
        }
        if ( isset( $value->response['backupwordpress/backupwordpress.php'] ) ) {
            unset( $value->response['backupwordpress/backupwordpress.php'] );
        }

        return $value;
    }

    /**
     * Fire off certain BackUpWordPress plugin actions.
     *
     * @uses \MainWP\Child\MainWP_Helper::write() Write response data to be sent to the MainWP Dashboard.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::is_activated() Check if the plugin is activated.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::set_showhide() Hide or unhide the BackUpWordPress plugin.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::delete_schedule() Delete backup schedule.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::hmbkp_request_cancel_backup() Cancel backup process.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::get_backup_status() Get the bacukp process status.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::reload_backups() Reload backups.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::hmbkp_request_delete_backup() Delete backup.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::run_schedule() Run schedules.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::save_all_schedules() Save all schedules.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::update_schedule() Update schedule.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::get_excluded() Get excluded files.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::directory_browse() Browse directory.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::hmbkp_add_exclude_rule() Add exclusion rule.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::hmbkp_remove_exclude_rule() Remove exclusion rule.
     * @uses \MainWP\Child\MainWP_Child_Back_Up_WordPress::general_exclude_add_rule() General exclusion rules.
     */
    public function action() { // phpcs:ignore -- Current complexity is the only way to achieve desired results, pull request solutions appreciated.
        $information = array();
        if ( ! self::is_activated() ) {
            $information['error'] = 'NO_BACKUPWORDPRESS';
            MainWP_Helper::write( $information );
        }
        $mwp_action = MainWP_System::instance()->validate_params( 'mwp_action' );
        if ( ! empty( $mwp_action ) ) {
            switch ( $mwp_action ) {
                case 'set_showhide':
                    $information = $this->set_showhide();
                    break;
                case 'delete_schedule':
                    $information = $this->delete_schedule();
                    break;
                case 'cancel_schedule':
                    $information = $this->hmbkp_request_cancel_backup();
                    break;
                case 'get_backup_status':
                    $information = $this->get_backup_status();
                    break;
                case 'reload_backupslist':
                    $information = $this->reload_backups();
                    break;
                case 'delete_backup':
                    $information = $this->hmbkp_request_delete_backup();
                    break;
                case 'run_schedule':
                    $information = $this->run_schedule();
                    break;
                case 'save_all_schedules':
                    $information = $this->save_all_schedules();
                    break;
                case 'update_schedule':
                    $information = $this->update_schedule();
                    break;
                case 'get_excluded':
                    $information = $this->get_excluded();
                    break;
                case 'directory_browse':
                    $information = $this->directory_browse();
                    break;
                case 'exclude_add_rule':
                    $information = $this->hmbkp_add_exclude_rule();
                    break;
                case 'exclude_remove_rule':
                    $information = $this->hmbkp_remove_exclude_rule();
                    break;
                case 'general_exclude_add_rule':
                    $information = $this->general_exclude_add_rule();
                    break;
            }
        }
        MainWP_Helper::write( $information );
    }

    /**
     * Check schedule and get the ID.
     *
     * @return int Schedule ID.
     *
     * @uses \MainWP\Child\MainWP_Helper::write() Write response data to be sent to the MainWP Dashboard.
     * @uses sanitize_text_field() Sanitizes a string from user input or from the database.
     * @see https://developer.wordpress.org/reference/functions/sanitize_text_field/
     */
    public function check_schedule() {
        $schedule_id = ( isset( $_POST['schedule_id'] ) && ! empty( $_POST['schedule_id'] ) ) ? sanitize_text_field( wp_unslash( $_POST['schedule_id'] ) ) : ''; // phpcs:ignore WordPress.Security.NonceVerification
        if ( empty( $schedule_id ) ) {
            $information = array( 'error' => 'Empty schedule id' );
            MainWP_Helper::write( $information );
        } else {
            $schedule_id = sanitize_text_field( rawurldecode( $schedule_id ) );
            \HM\BackUpWordPress\Schedules::get_instance()->refresh_schedules();
            if ( ! \HM\BackUpWordPress\Schedules::get_instance()->get_schedule( $schedule_id ) ) {
                $information = array( 'result' => 'NOTFOUND' );
                MainWP_Helper::write( $information );
            }
        }

        return $schedule_id;
    }

    /**
     * Sync the BackUpWordPress plugin settings.
     *
     * @param array $information Array containing the sync information.
     * @param array $data        Array containing the BackUpWordPress plugin data to be synced.
     *
     * @uses MainWP_Child_Back_Up_WordPress::get_sync_data() Get synced BackUpWordPress data.
     *
     * @return array $information Array containing the sync information.
     */
    public function sync_others_data( $information, $data = array() ) {
        if ( isset( $data['syncBackUpWordPress'] ) && $data['syncBackUpWordPress'] ) {
            try {
                $information['syncBackUpWordPress'] = $this->get_sync_data();
            } catch ( MainWP_Exception $e ) {
                // ok!
            }
        }
        return $information;
    }

    /**
     * Get synced BackUpWordPress data.
     *
     * @return array Return an array containing the synced data.
     *
     * @uses \MainWP\Child\MainWP_Helper::instance()->check_classes_exists() Check if requested class exists.
     * @uses \MainWP\Child\MainWP_Helper::instance()->check_methods() Check if requested method exists.
     *
     * @used-by \MainWP\Child\MainWP_Child_Back_Up_WordPress::sync_others_data() Sync the BackUpWordPress plugin settings.
     */
    private function get_sync_data() {
        MainWP_Helper::instance()->check_classes_exists( '\HM\BackUpWordPress\Schedules' );
        MainWP_Helper::instance()->check_methods( '\HM\BackUpWordPress\Schedules', array( 'get_instance', 'refresh_schedules', 'get_schedules' ) );

        \HM\BackUpWordPress\Schedules::get_instance()->refresh_schedules();
        $schedules    = \HM\BackUpWordPress\Schedules::get_instance()->get_schedules();
        $backups_time = array();

        if ( is_array( $schedules ) && count( $schedules ) ) {
            foreach ( $schedules as $sche ) {
                if ( true === MainWP_Helper::instance()->check_methods( $sche, array( 'get_backups' ), true ) ) {
                    $existing_backup = $sche->get_backups();
                    if ( ! empty( $existing_backup ) ) {
                        $backups_time = array_merge( $backups_time, array_keys( $existing_backup ) );
                    }
                }
            }
        }

        $lasttime_backup = 0;
        if ( ! empty( $backups_time ) ) {
            $lasttime_backup = max( $backups_time );
        }

        $return = array( 'lasttime_backup' => $lasttime_backup );

        return $return;
    }

    /**
     * Add support for the reporting system.
     *
     * @uses has_action() Check if any action has been registered for a hook.
     * @see https://developer.wordpress.org/reference/functions/has_action/
     *
     * @uses MainWP_Child_Back_Up_WordPress::do_reports_log() Add BackUpWordPress data to the reports database table.
     */
    public function do_site_stats() {
        if ( has_action( 'mainwp_child_reports_log' ) ) {
            do_action( 'mainwp_child_reports_log', 'backupwordpress' );
        } else {
            $this->do_reports_log( 'backupwordpress' );
        }
    }

    /**
     * Add BackUpWordPress data to the reports database table.
     *
     * @param string $ext Current extension.
     *
     * @uses \MainWP\Child\MainWP_Helper::instance()->check_classes_exists() Check if the requested class exists.
     * @uses \MainWP\Child\MainWP_Helper::instance()->check_methods() Check if the requested method exists.
     * @uses \MainWP\Child\MainWP_Utility::update_lasttime_backup() Get the last backup timestamp
     * @uses \MainWP\Child\MainWP_Utility::update_lasttime_backup()
     *
     * @used-by \MainWP\Child\MainWP_Child_Back_Up_WordPress::do_site_stats() Add support for the reporting system.
     */
    public function do_reports_log( $ext = '' ) {
        if ( 'backupwordpress' !== $ext ) {
            return;
        }
        if ( ! $this->is_plugin_installed ) {
            return;
        }

        try {
            MainWP_Helper::instance()->check_classes_exists( '\HM\BackUpWordPress\Schedules' );
            MainWP_Helper::instance()->check_methods( '\HM\BackUpWordPress\Schedules', array( 'get_instance', 'refresh_schedules', 'get_schedules' ) );

            // Refresh the schedules from the database to make sure we have the latest changes.
            \HM\BackUpWordPress\Schedules::get_instance()->refresh_schedules();
            $schedules = \HM\BackUpWordPress\Schedules::get_instance()->get_schedules();
            if ( is_array( $schedules ) && count( $schedules ) > 0 ) {
                $check = current( $schedules );
                MainWP_Helper::instance()->check_methods( $check, array( 'get_backups', 'get_type' ) );

                foreach ( $schedules as $schedule ) {
                    foreach ( $schedule->get_backups() as $file ) {
                        $backup_type = $schedule->get_type();
                        $message     = 'BackupWordpres backup ' . $backup_type . ' finished';
                        $destination = 'N/A';
                        if ( file_exists( $file ) ) {
                            $date = filemtime( $file );
                            if ( ! empty( $date ) ) {
                                do_action( 'mainwp_reports_backupwordpress_backup', $destination, $message, 'finished', $backup_type, $date );
                                MainWP_Utility::update_lasttime_backup( 'backupwordpress', $date ); // to support backup before update feature.
                            }
                        }
                    }
                }
            }
        } catch ( MainWP_Exception $e ) {
            // ok!
        }
    }

    /**
     * Hide or unhide the BackUpWordPress plugin.
     *
     * @return array Action result.
     *
     * @uses \MainWP\Child\MainWP_Helper::update_option() Update database option by option name.
     *
     * @used-by \MainWP\Child\MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     */
    public function set_showhide() {
        $hide = MainWP_System::instance()->validate_params( 'showhide' );
        MainWP_Helper::update_option( 'mainwp_backupwordpress_hide_plugin', $hide );
        $information['result'] = 'SUCCESS';

        return $information;
    }

    /**
     * Delete schedule.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function delete_schedule() {
        $schedule_id = $this->check_schedule();
        $schedule    = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( rawurldecode( $schedule_id ) ) );

        if ( $schedule ) {
            $schedule->cancel( true );
            $information['result'] = 'SUCCESS';
        } else {
            $information['result'] = 'NOTFOUND';
        }

        return $information;
    }

    /**
     * Cancel the backup process.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function hmbkp_request_cancel_backup() {
        $schedule_id = $this->check_schedule();
        $schedule    = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( rawurldecode( $schedule_id ) ) );

        // Delete the running backup.
        if ( method_exists( $schedule, 'get_running_backup_filename' ) ) {
            if ( $schedule->get_running_backup_filename() && file_exists( trailingslashit( hmbkp_path() ) . $schedule->get_running_backup_filename() ) ) {
                wp_delete_file( trailingslashit( hmbkp_path() ) . $schedule->get_running_backup_filename() );
            }
            if ( $schedule->get_schedule_running_path() && file_exists( $schedule->get_schedule_running_path() ) ) {
                wp_delete_file( $schedule->get_schedule_running_path() );
            }
        } else {
            $status = $schedule->get_status();
            // Delete the running backup.
            if ( $status->get_backup_filename() && file_exists( trailingslashit( \HM\BackUpWordPress\Path::get_path() ) . $status->get_backup_filename() ) ) {
                wp_delete_file( trailingslashit( \HM\BackUpWordPress\Path::get_path() ) . $status->get_backup_filename() );
            }
            if ( file_exists( $status->get_status_filepath() ) ) {
                wp_delete_file( $status->get_status_filepath() );
            }
        }

        \HM\BackUpWordPress\Path::get_instance()->cleanup();

        if ( null === $status ) {
            $information['scheduleStatus'] = $schedule->get_status();
        } else {
            $information['scheduleStatus'] = $status->get_status();
        }

        $information['result'] = 'SUCCESS';

        return $information;
    }

    /**
     * Get the backup process status.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function get_backup_status() {
        $schedule_id = $this->check_schedule();
        $schedule    = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( rawurldecode( $schedule_id ) ) );

        if ( method_exists( $schedule, 'get_running_backup_filename' ) ) {
            $information['scheduleStatus'] = $schedule->get_status();
        } else {
            $status                        = $schedule->get_status();
            $information['scheduleStatus'] = $status->get_status();
        }

        $information['result'] = 'SUCCESS';

        return $information;
    }

    /**
     * Run schedule.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function run_schedule() {
        $schedule_id = $this->check_schedule();
        if ( function_exists( 'hmbkp_run_schedule_async' ) ) {
            hmbkp_run_schedule_async( $schedule_id );
        } elseif ( function_exists( '\HM\BackUpWordPress\run_schedule_async' ) ) {
            \HM\BackUpWordPress\Path::get_instance()->cleanup();
            // Fixes an issue on servers which only allow a single session per client.
            session_write_close();
            $task = new \HM\Backdrop\Task( '\HM\BackUpWordPress\run_schedule_async', $schedule_id );
            $task->schedule();
        } else {
            return array( 'error' => esc_html__( 'Error while trying to trigger the schedule', 'mainwp-child' ) );
        }
        return array( 'result' => 'SUCCESS' );
    }

    /**
     * Reload backups.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function reload_backups() {

        $scheduleIds = isset( $_POST['schedule_ids'] ) ? array_map( 'sanitize_text_field', wp_unslash( $_POST['schedule_ids'] ) ) : array(); // phpcs:ignore WordPress.Security.NonceVerification
        \HM\BackUpWordPress\Schedules::get_instance()->refresh_schedules();

        $all_schedules_ids = array();
        $schedules         = \HM\BackUpWordPress\Schedules::get_instance()->get_schedules();
        foreach ( $schedules as $sch ) {
            $all_schedules_ids[] = $sch->get_id();
        }

        if ( empty( $all_schedules_ids ) ) {
            return array( 'error' => 'Schedules could not be found.' );
        }

        foreach ( $all_schedules_ids as $schedule_id ) {
            if ( ! \HM\BackUpWordPress\Schedules::get_instance()->get_schedule( $schedule_id ) ) {
                continue;
            }

            $schedule    = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( rawurldecode( $schedule_id ) ) );
            $started_ago = method_exists( $schedule, 'get_schedule_running_start_time' ) ? $schedule->get_schedule_running_start_time() : $schedule->get_schedule_start_time();
            $out         = array(
                'b'              => $this->get_backupslist_html( $schedule ),
                'count'          => count( $schedule->get_backups() ),
                'file_size_text' => $this->hmbkp_get_site_size_text( $schedule ),
                'started_ago'    => human_time_diff( $started_ago ),
            );

            if ( method_exists( $schedule, 'get_running_backup_filename' ) ) {
                $out['scheduleStatus'] = $schedule->get_status();
            } else {
                $status                = $schedule->get_status();
                $out['scheduleStatus'] = $status->get_status();
            }

            $information['backups'][ $schedule_id ] = $out;
        }

        $send_back_schedules = array();

        $schedules = \HM\BackUpWordPress\Schedules::get_instance()->get_schedules();
        foreach ( $schedules as $schedule ) {
            $sch_id = $schedule->get_id();
            if ( ! in_array( $sch_id, $scheduleIds ) ) {
                $current_option = get_option( 'hmbkp_schedule_' . $sch_id );
                if ( is_array( $current_option ) ) {
                    unset( $current_option['excludes'] );
                    $started_ago                    = method_exists( $schedule, 'get_schedule_running_start_time' ) ? $schedule->get_schedule_running_start_time() : $schedule->get_schedule_start_time();
                    $send_back_schedules[ $sch_id ] = array(
                        'options'        => $current_option,
                        'b'              => $this->get_backupslist_html( $schedule ),
                        'count'          => count( $schedule->get_backups() ),
                        'file_size_text' => $this->hmbkp_get_site_size_text( $schedule ),
                        'scheduleStatus' => $schedule->get_status(),
                        'started_ago'    => human_time_diff( $started_ago ),
                    );
                    if ( method_exists( $schedule, 'get_running_backup_filename' ) ) {
                        $send_back_schedules['scheduleStatus'] = $schedule->get_status();
                    } else {
                        $status                                = $schedule->get_status();
                        $send_back_schedules['scheduleStatus'] = $status->get_status();
                    }
                }
            }
        }

        if ( function_exists( '\HM\BackUpWordPress\Backup::get_home_path' ) ) {
            $backups_path = str_replace( \HM\BackUpWordPress\Backup::get_home_path(), '', hmbkp_path() );
        } else {
            $backups_path = str_replace( \HM\BackUpWordPress\Path::get_home_path(), '', \HM\BackUpWordPress\Path::get_path() );
        }

        $information['backups_path']        = $backups_path;
        $information['send_back_schedules'] = $send_back_schedules;
        $information['result']              = 'SUCCESS';

        return $information;
    }

    /**
     * Delete backup.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function hmbkp_request_delete_backup() {
        // phpcs:disable WordPress.Security.NonceVerification
        if ( ! isset( $_POST['hmbkp_backuparchive'] ) || empty( $_POST['hmbkp_backuparchive'] ) ) {
            return array( 'error' => esc_html__( 'Invalid data. Please check and try again.', 'mainwp-child' ) );
        }

        $schedule_id = $this->check_schedule();

        $schedule = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( rawurldecode( $schedule_id ) ) );

        $deleted = isset( $_POST['hmbkp_backuparchive'] ) ? $schedule->delete_backup( base64_decode( rawurldecode( wp_unslash( $_POST['hmbkp_backuparchive'] ) ) ) ) : false; // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions,WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- base64_encode function is used for http encode compatible..
        // phpcs:enable

        if ( is_wp_error( $deleted ) ) {
            return array( 'error' => $deleted->get_error_message() );
        }

        $ret = array(
            'result'         => 'SUCCESS',
            'b'              => $this->get_backupslist_html( $schedule ),
            'count'          => count( $schedule->get_backups() ),
            'file_size_text' => $this->hmbkp_get_site_size_text( $schedule ),
        );
        if ( method_exists( $schedule, 'get_running_backup_filename' ) ) {
            $ret['scheduleStatus'] = $schedule->get_status();
        } else {
            $status                = $schedule->get_status();
            $ret['scheduleStatus'] = $status->get_status();
        }
        return $ret;
    }

    /**
     * Get backups list HTML.
     *
     * @param object $schedule Object containing the schedule data.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function get_backupslist_html( $schedule ) {
        ob_start();
        ?>
        <table class="widefat">
            <thead>
                <tr>
                    <th scope="col"><?php function_exists( 'hmbkp_backups_number' ) ? hmbkp_backups_number( $schedule ) : ( function_exists( 'backups_number' ) ? backups_number( $schedule ) : '' ); ?></th>
                    <th scope="col"><?php esc_html_e( 'Size', 'mainwp-child' ); ?></th>
                    <th scope="col"><?php esc_html_e( 'Type', 'mainwp-child' ); ?></th>
                    <th scope="col"><?php esc_html_e( 'Actions', 'mainwp-child' ); ?></th>
                </tr>
            </thead>
            <tbody>
            <?php
            if ( $schedule->get_backups() ) {
                $schedule->delete_old_backups();
                foreach ( $schedule->get_backups() as $file ) {
                    if ( ! file_exists( $file ) ) {
                        continue;
                    }
                    $this->hmbkp_get_backup_row( $file, $schedule );
                }
            } else {
                ?>
                <tr>
                    <td class="hmbkp-no-backups" colspan="4"><?php esc_html_e( 'This is where your backups will appear once you have some.', 'mainwp-child' ); ?></td>
                </tr>
            <?php } ?>
            </tbody>
        </table>
        <?php
        $html = ob_get_clean();

        return $html;
    }

    /**
     * Get the site size text.
     *
     * @param \HM\BackUpWordPress\Scheduled_Backup $schedule Object containing the schedule data.
     *
     * @return string Site size text.
     */
    public function hmbkp_get_site_size_text( \HM\BackUpWordPress\Scheduled_Backup $schedule ) {
        if ( method_exists( $schedule, 'is_site_size_cached' ) ) {
            if ( ( 'database' === $schedule->get_type() ) || $schedule->is_site_size_cached() ) {
                return sprintf( '(<code title="' . esc_html__( 'Backups will be compressed and should be smaller than this.', 'mainwp-child' ) . '">%s</code>)', esc_attr( $schedule->get_formatted_site_size() ) );
            }
        } else {
            $site_size = new \HM\BackUpWordPress\Site_Size( $schedule->get_type(), $schedule->get_excludes() );
            if ( ( 'database' === $schedule->get_type() ) || $site_size->is_site_size_cached() ) {
                return sprintf( '(<code title="' . esc_html__( 'Backups will be compressed and should be smaller than this.', 'mainwp-child' ) . '">%s</code>)', esc_attr( $site_size->get_formatted_site_size() ) );
            }
        }

        return sprintf( '(<code class="calculating" title="' . esc_html__( 'this shouldn\'t take long&hellip;', 'mainwp-child' ) . '">' . esc_html__( 'calculating the size of your backup&hellip;', 'mainwp-child' ) . '</code>)' );
    }

    /**
     * Get the backup table row HTML.
     *
     * @param resource                             $file     Backup file.
     * @param \HM\BackUpWordPress\Scheduled_Backup $schedule Object containing the schedule data.
     */
    public function hmbkp_get_backup_row( $file, \HM\BackUpWordPress\Scheduled_Backup $schedule ) {
        $encoded_file = rawurlencode( base64_encode( $file ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions -- base64_encode function is used for http encode compatible..
        $offset       = get_option( 'gmt_offset' ) * 3600;
        ?>
        <tr class="hmbkp_manage_backups_row">
            <th scope="row">
                <?php echo esc_html( date_i18n( get_option( 'date_format' ) . ' - ' . get_option( 'time_format' ), filemtime( $file ) + $offset ) ); ?>
            </th>
            <td class="code">
                <?php echo esc_html( size_format( filesize( $file ) ) ); ?>
            </td>
            <td><?php echo function_exists( 'hmbkp_human_get_type' ) ? esc_html( hmbkp_human_get_type( $file, $schedule ) ) : esc_html( \HM\BackUpWordPress\human_get_type( $file, $schedule ) ); ?></td>
            <td>
                <?php
                if ( function_exists( 'hmbkp_is_path_accessible' ) ) {
                    if ( hmbkp_is_path_accessible( hmbkp_path() ) ) {
                        ?>
                        <a href="#" onclick="event.preventDefault(); mainwp_backupwp_download_backup('<?php echo esc_js( $encoded_file ); ?>', <?php echo esc_attr( $schedule->get_id() ); ?>, this);" class="download-action"><?php esc_html_e( 'Download', 'mainwp-child' ); ?></a> |
                        <?php
                    }
                } elseif ( function_exists( '\HM\BackUpWordPress\is_path_accessible' ) ) {
                    if ( \HM\BackUpWordPress\is_path_accessible( \HM\BackUpWordPress\Path::get_path() ) ) {
                        ?>
                        <a href="#" onclick="event.preventDefault(); mainwp_backupwp_download_backup('<?php echo esc_js( $encoded_file ); ?>', <?php echo esc_attr( $schedule->get_id() ); ?>, this);" class="download-action"><?php esc_html_e( 'Download', 'mainwp-child' ); ?></a> |
                        <?php
                    }
                }
                ?>
                <a href="#" onclick="event.preventDefault(); mainwp_backupwp_delete_backup('<?php echo esc_js( $encoded_file ); ?>', <?php echo esc_attr( $schedule->get_id() ); ?>, this);" class="delete-action"><?php esc_html_e( 'Delete', 'mainwp-child' ); ?></a>
            </td>
        </tr>
        <?php
    }

    /**
     * Get excluded files.
     *
     * @param string $browse_dir Browse directory path.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function get_excluded( $browse_dir = null ) {

        $schedule_id = $this->check_schedule();
        $schedule    = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( rawurldecode( $schedule_id ) ) );

        $new_version = true;
        if ( method_exists( $schedule, 'get_running_backup_filename' ) ) {
            $new_version        = false;
            $user_excludes      = array_diff( $schedule->get_excludes(), $schedule->backup->default_excludes() );
            $root_dir           = $schedule->backup->get_root();
            $is_size_calculated = $schedule->is_site_size_being_calculated();
        } else {
            $excludes           = $schedule->get_excludes();
            $user_excludes      = $excludes->get_user_excludes();
            $root_dir           = \HM\BackUpWordPress\Path::get_root();
            $is_size_calculated = \HM\BackUpWordPress\Site_Size::is_site_size_being_calculated();
        }

        ob_start();

        ?>
        <div class="hmbkp-exclude-settings">
            <h3><?php esc_html_e( 'Currently Excluded', 'mainwp-child' ); ?></h3>
            <p><?php esc_html_e( 'We automatically detect and ignore common <abbr title="Version Control Systems">VCS</abbr> folders and other backup plugin folders.', 'mainwp-child' ); ?></p>
            <?php
            $this->render_table_excluded( $root_dir, $schedule, $excludes, $user_excludes, $new_version )
            ?>
            <h3 id="directory-listing"><?php esc_html_e( 'Your Site', 'mainwp-child' ); ?></h3>
            <p><?php esc_html_e( 'Here\'s a directory listing of all files on your site, you can browse through and exclude files or folders that you don\'t want included in your backup.', 'mainwp-child' ); ?></p>
            <?php
            $directory = $root_dir;

            if ( isset( $browse_dir ) ) {

                $untrusted_directory = rawurldecode( $browse_dir );

                // Only allow real sub directories of the site root to be browsed.
                if ( false !== strpos( $untrusted_directory, $root_dir ) && is_dir( $untrusted_directory ) ) {
                    $directory = $untrusted_directory;
                }
            }

            // Kick off a recursive filesize scan.
            if ( $new_version ) {
                $site_size      = new \HM\BackUpWordPress\Site_Size();
                $exclude_string = implode( '|', $excludes->get_excludes_for_regex() );
                if ( function_exists( '\HM\BackUpWordPress\list_directory_by_total_filesize' ) ) {
                    $files = \HM\BackUpWordPress\list_directory_by_total_filesize( $directory, $excludes );
                }
            } else {
                $files          = $schedule->list_directory_by_total_filesize( $directory );
                $exclude_string = $schedule->backup->exclude_string( 'regex' );
            }
            if ( $files ) {
                $this->render_table_files( $files, $schedule, $directory, $root_dir, $new_version, $site_size, $is_size_calculated );
            }
            ?>
            <p class="submit">
                <a href="#" onclick="event.preventDefault(); mainwp_backupwp_edit_exclude_done()" class="button-primary"><?php esc_html_e( 'Done', 'mainwp-child' ); ?></a>
            </p>
        </div>
        <?php
        $output           = ob_get_clean();
        $information['e'] = $output;

        return $information;
    }

    /**
     * Render table of the excluded items.
     *
     * @param string $root_dir      Root directory.
     * @param object $schedule      Object containng the schedule data.
     * @param object $excludes      Files to exclude.
     * @param object $user_excludes Excluded by user.
     * @param string $new_version   New version.
     */
    private function render_table_excluded( $root_dir, $schedule, $excludes, $user_excludes, $new_version ) {
        ?>
        <table class="widefat">
            <tbody>
            <?php foreach ( $user_excludes as $key => $exclude ) : ?>
                <?php $exclude_path = new \SplFileInfo( trailingslashit( $root_dir ) . ltrim( str_ireplace( $root_dir, '', $exclude ), '/' ) ); ?>
                <tr>
                    <th scope="row">
                        <?php if ( $exclude_path->isFile() ) { ?>
                            <div class="dashicons dashicons-media-default"></div>
                        <?php } elseif ( $exclude_path->isDir() ) { ?>
                            <div class="dashicons dashicons-portfolio"></div>
                        <?php } ?>
                    </th>
                    <td>
                        <code><?php echo esc_html( str_ireplace( $root_dir, '', $exclude ) ); ?></code>
                    </td>
                    <td>
                        <?php
                        if ( $new_version ) {
                            $is_default_rule = ( in_array( $exclude, $excludes->get_default_excludes() ) ) || ( \HM\BackUpWordPress\Path::get_path() === trailingslashit( \HM\BackUpWordPress\Path::get_root() ) . untrailingslashit( $exclude ) );
                        } else {
                            $is_default_rule = ( in_array( $exclude, $schedule->backup->default_excludes() ) ) || ( hmbkp_path() === untrailingslashit( $exclude ) );
                        }
                        if ( $is_default_rule ) :
                            ?>
                            <?php esc_html_e( 'Default rule', 'mainwp-child' ); ?>
                        <?php elseif ( defined( 'HMBKP_EXCLUDE' ) && false !== strpos( HMBKP_EXCLUDE, $exclude ) ) : ?>
                            <?php esc_html_e( 'Defined in wp-config.php', 'mainwp-child' ); ?>
                        <?php else : ?>
                            <a href="#" onclick="event.preventDefault(); mainwp_backupwp_remove_exclude_rule('<?php esc_js( $exclude ); ?>', this);" class="delete-action"><?php esc_html_e( 'Stop excluding', 'mainwp-child' ); ?></a>
                        <?php endif; ?>
                    </td>
                </tr>
            <?php endforeach; ?>
            </tbody>
        </table>
        <?php
    }

    /**
     * Render the files table.
     *
     * @param object $files              Backup files.
     * @param object $schedule           Object containng the schedule data.
     * @param string $directory          Backups directory.
     * @param string $root_dir           Site root directory.
     * @param string $new_version        New version.
     * @param int    $site_size          Site size.
     * @param bool   $is_size_calculated Check if the size is calculated.
     */
    private function render_table_files( $files, $schedule, $directory, $root_dir, $new_version, $site_size, $is_size_calculated ) {
        ?>
        <table class="widefat">
            <thead>
            <?php
                $this->render_table_header_files( $root_dir, $directory, $schedule, $new_version, $site_size, $is_size_calculated );
            ?>
        </thead>
        <tbody>
            <?php
            $this->render_table_body_files( $files, $schedule, $root_dir, $new_version, $site_size, $is_size_calculated );
            ?>
        </tbody>
        </table>
        <?php
    }

    /**
     * Render the backup table header.
     *
     * @param string $root_dir           Site root directory.
     * @param string $directory          Backups directory.
     * @param object $schedule           Object containng the schedule data.
     * @param string $new_version        New version.
     * @param int    $site_size          Site size.
     * @param bool   $is_size_calculated Check if the size is calculated.
     */
    private function render_table_header_files( $root_dir, $directory, $schedule, $new_version, $site_size, $is_size_calculated ) {
        ?>
        <tr>
            <th></th>
            <th scope="col"><?php esc_html_e( 'Name', 'mainwp-child' ); ?></th>
            <th scope="col" class="column-format"><?php esc_html_e( 'Size', 'mainwp-child' ); ?></th>
            <th scope="col"
                class="column-format"><?php esc_html_e( 'Permissions', 'mainwp-child' ); ?></th>
            <th scope="col" class="column-format"><?php esc_html_e( 'Type', 'mainwp-child' ); ?></th>
            <th scope="col" class="column-format"><?php esc_html_e( 'Status', 'mainwp-child' ); ?></th>
        </tr>
        <tr>
            <th scope="row">
                <div class="dashicons dashicons-admin-home"></div>
            </th>
            <th scope="col">
                <?php
                if ( $root_dir !== $directory ) {
                    ?>
                    <a href="#" onclick="event.preventDefault(); mainwp_backupwp_directory_browse( '', this )"><?php echo esc_html( $root_dir ); ?></a>
                    <code>/</code>
                    <?php
                    $parents = array_filter( explode( '/', str_replace( trailingslashit( $root_dir ), '', trailingslashit( dirname( $directory ) ) ) ) );
                    foreach ( $parents as $directory_basename ) {
                        ?>
                        <a href="#" onclick="event.preventDefault(); mainwp_backupwp_directory_browse('<?php echo rawurlencode( substr( $directory, 0, strpos( $directory, $directory_basename ) ) . $directory_basename ); ?>', this)"><?php echo esc_html( $directory_basename ); ?></a>
                        <code>/</code>
                    <?php } ?>
                    <?php echo esc_html( basename( $directory ) ); ?>
                <?php } else { ?>
                    <?php echo esc_html( $root_dir ); ?>
                <?php } ?>
            </th>
            <td class="column-filesize">
                <?php if ( $is_size_calculated ) : ?>
                    <span class="spinner"></span>
                    <?php
                else :
                    $root = new \SplFileInfo( $root_dir );
                    if ( $new_version ) {
                        $size = $site_size->filesize( $root );
                    } else {
                        $size = $schedule->filesize( $root, true );
                    }
                    if ( false !== $size ) {
                        $size = size_format( $size );
                        if ( ! $size ) {
                            $size = '0 B';
                        }
                        ?>
                        <code>
                            <?php echo esc_html( $size ); ?>
                            <a class="dashicons dashicons-update" href="<?php echo esc_attr( wp_nonce_url( add_query_arg( 'hmbkp_recalculate_directory_filesize', rawurlencode( $root_dir ) ), 'hmbkp-recalculate_directory_filesize' ) ); ?>"><span><?php esc_html_e( 'Refresh', 'mainwp-child' ); ?></span></a>
                        </code>
                    <?php } ?>
                <?php endif; ?>
            <td>
                <?php echo esc_html( substr( sprintf( '%o', fileperms( $root_dir ) ), - 4 ) ); ?>
            </td>
            <td>
                <?php
                if ( is_link( $root_dir ) ) {
                    esc_html_e( 'Symlink', 'mainwp-child' );
                } elseif ( is_dir( $root_dir ) ) {
                    esc_html_e( 'Folder', 'mainwp-child' );
                }
                ?>
            </td>
            <td></td>
        </tr>
        <?php
    }

    /**
     * Render the backup table body.
     *
     * @param object $files              Backup files.
     * @param object $schedule           Object containng the schedule data.
     * @param string $root_dir           Site root directory.
     * @param string $new_version        New version.
     * @param int    $site_size          Site size.
     * @param bool   $is_size_calculated Check if the size is calculated.
     */
    private function render_table_body_files( $files, $schedule, $root_dir, $new_version, $site_size, $is_size_calculated ) { // phpcs:ignore -- Current complexity is the only way to achieve desired results, pull request solutions appreciated.

        foreach ( $files as $size => $file ) {
            $is_excluded   = false;
            $is_unreadable = false;
            // Check if the file is excluded.
            if ( $new_version ) {
                if ( $exclude_string && preg_match( '(' . $exclude_string . ')', str_ireplace( trailingslashit( $root_dir ), '', wp_normalize_path( $file->getPathname() ) ) ) ) {
                    $is_excluded = true;
                }
            } elseif ( $exclude_string && preg_match( '(' . $exclude_string . ')', str_ireplace( trailingslashit( $root_dir ), '', \HM\BackUpWordPress\Backup::conform_dir( $file->getPathname() ) ) ) ) {
                    $is_excluded = true;
            }
            // Skip unreadable files.
            if ( ! realpath( $file->getPathname() ) || ! $file->isReadable() ) {
                $is_unreadable = true;
            }
            ?>
            <tr>
                <td>
                    <?php if ( $is_unreadable ) { ?>
                        <div class="dashicons dashicons-dismiss"></div>
                    <?php } elseif ( $file->isFile() ) { ?>
                        <div class="dashicons dashicons-media-default"></div>
                    <?php } elseif ( $file->isDir() ) { ?>
                        <div class="dashicons dashicons-portfolio"></div>
                    <?php } ?>
                </td>
                <td>
                    <?php
                    if ( $new_version ) {
                        if ( $is_unreadable ) {
                            ?>
                            <code class="strikethrough" title="<?php echo esc_attr( wp_normalize_path( $file->getRealPath() ) ); ?>"><?php echo esc_html( $file->getBasename() ); ?></code>
                        <?php } elseif ( $file->isFile() ) { ?>
                            <code title="<?php echo esc_attr( wp_normalize_path( $file->getRealPath() ) ); ?>"><?php echo esc_html( $file->getBasename() ); ?></code>
                        <?php } elseif ( $file->isDir() ) { ?>
                            <code title="<?php echo esc_attr( $file->getRealPath() ); ?>"><a href="#" onclick="event.preventDefault(); mainwp_backupwp_directory_browse('<?php echo rawurlencode( wp_normalize_path( $file->getPathname() ) ); ?>', this)"><?php echo esc_html( $file->getBasename() ); ?></a></code>
                            <?php
                        }
                    } elseif ( $is_unreadable ) {
                        ?>
                            <code class="strikethrough" title="<?php echo esc_attr( $file->getRealPath() ); ?>"><?php echo esc_html( $file->getBasename() ); ?></code>
                        <?php } elseif ( $file->isFile() ) { ?>
                            <code title="<?php echo esc_attr( $file->getRealPath() ); ?>"><?php echo esc_html( $file->getBasename() ); ?></code>
                            <?php
                        } elseif ( $file->isDir() ) {
                            ?>
                            <code title="<?php echo esc_attr( $file->getRealPath() ); ?>"><a href="#" onclick="event.preventDefault(); mainwp_backupwp_directory_browse('<?php echo rawurlencode( $file->getPathname() ); ?>', this)"><?php echo esc_html( $file->getBasename() ); ?></a></code>
                            <?php

                        }
                        ?>
                </td>
                <td class="column-format column-filesize">
                    <?php if ( $file->isDir() && $is_size_calculated ) : ?>
                        <span class="spinner"></span>
                        <?php
                    else :
                        if ( $new_version ) {
                            $size = $site_size->filesize( $file );
                        } else {
                            $size = $schedule->filesize( $file );
                        }
                        if ( false !== $size ) {
                            $size = size_format( $size );
                            if ( ! $size ) {
                                $size = '0 B';
                            }
                            ?>
                            <code>
                                <?php echo esc_html( $size ); ?>
                                <?php if ( $file->isDir() ) { ?>
                                    <a title="<?php esc_attr_e( 'Recalculate the size of this directory', 'mainwp-child' ); ?>" class="dashicons dashicons-update" href="<?php echo esc_attr( wp_nonce_url( add_query_arg( 'hmbkp_recalculate_directory_filesize', rawurlencode( wp_normalize_path( $file->getPathname() ) ) ), 'hmbkp-recalculate_directory_filesize' ) ); ?>"><span><?php esc_html_e( 'Refresh', 'mainwp-child' ); ?></span></a>
                                <?php } ?>
                            </code>
                        <?php } else { ?>
                            <code>--</code>
                            <?php
                        }
                    endif;
                    ?>
                </td>
                <td>
                    <?php echo esc_html( substr( sprintf( '%o', $file->getPerms() ), - 4 ) ); ?>
                </td>
                <td>
                    <?php if ( $file->isLink() ) : ?>
                        <span title="<?php echo esc_attr( wp_normalize_path( $file->GetRealPath() ) ); ?>"><?php esc_html_e( 'Symlink', 'mainwp-child' ); ?></span>
                        <?php
                    elseif ( $file->isDir() ) :
                        esc_html_e( 'Folder', 'mainwp-child' );
                    else :
                        esc_html_e( 'File', 'mainwp-child' );
                    endif;
                    ?>
                </td>
                <td class="column-format">
                    <?php if ( $is_unreadable ) : ?>
                        <strong title="<?php esc_attr_e( 'Unreadable files won\'t be backed up.', 'mainwp-child' ); ?>"><?php esc_html_e( 'Unreadable', 'mainwp-child' ); ?></strong>
                    <?php elseif ( $is_excluded ) : ?>
                        <strong><?php esc_html_e( 'Excluded', 'mainwp-child' ); ?></strong>
                        <?php
                    else :
                        $exclude_path = $file->getPathname();

                        // Excluded directories need to be trailingslashed.
                        if ( $file->isDir() ) {
                            $exclude_path = trailingslashit( wp_normalize_path( $file->getPathname() ) );
                        }
                        ?>
                        <a href="#" onclick="event.preventDefault(); mainwp_backupwp_exclude_add_rule('<?php echo rawurlencode( $exclude_path ); ?>', this)" class="button-secondary"><?php esc_html_e( 'Exclude &rarr;', 'mainwp-child' ); ?></a>
                    <?php endif; ?>
                </td>
            </tr>
            <?php
        }
    }

    /**
     * Browse the directory.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function directory_browse() {
         // phpcs:disable WordPress.Security.NonceVerification
        $browse_dir = isset( $_POST['browse_dir'] ) ? sanitize_text_field( wp_unslash( $_POST['browse_dir'] ) ) : '';
         // phpcs:enable
        $out                       = array();
        $return                    = $this->get_excluded( $browse_dir );
        $out['e']                  = $return['e'];
        $out['current_browse_dir'] = $browse_dir;

        return $out;
    }

    /**
     * Add exclusion rule.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function hmbkp_add_exclude_rule() {
        // phpcs:disable WordPress.Security.NonceVerification
        if ( ! isset( $_POST['exclude_pathname'] ) || empty( $_POST['exclude_pathname'] ) ) {
            return array( 'error' => esc_html__( 'Empty exclude directory path.', 'mainwp-child' ) );
        }

        $schedule_id = $this->check_schedule();
        $schedule    = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( $schedule_id ) );

        $exclude_rule = isset( $_POST['exclude_pathname'] ) ? rawurldecode( wp_unslash( $_POST['exclude_pathname'] ) ) : ''; //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

        $schedule->set_excludes( $exclude_rule, true );

        $schedule->save();

        $current_path = isset( $_POST['browse_dir'] ) ? sanitize_text_field( rawurldecode( wp_unslash( $_POST['browse_dir'] ) ) ) : '';  //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

        if ( empty( $current_path ) ) {
            $current_path = null;
        }

        $return                    = $this->get_excluded( $current_path );
        $out['e']                  = $return['e'];
        $out['current_browse_dir'] = isset( $_POST['browse_dir'] ) ? sanitize_text_field( wp_unslash( $_POST['browse_dir'] ) ) : '';
        // phpcs:enable
        return $out;
    }

    /**
     * Remove exclusion rule.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function hmbkp_remove_exclude_rule() {
        // phpcs:disable WordPress.Security.NonceVerification
        if ( ! isset( $_POST['remove_rule'] ) || empty( $_POST['remove_rule'] ) ) {
            return array( 'error' => esc_html__( 'Empty exclude directory path.', 'mainwp-child' ) );
        }

        $schedule_id = $this->check_schedule();
        $schedule    = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( $schedule_id ) );

        $excludes               = $schedule->get_excludes();
        $exclude_rule_to_remove = stripslashes( sanitize_text_field( wp_unslash( $_POST['remove_rule'] ) ) );

        if ( method_exists( $excludes, 'get_user_excludes' ) ) {
            $schedule->set_excludes( array_diff( $excludes->get_user_excludes(), (array) $exclude_rule_to_remove ) );
        } else {
            $schedule->set_excludes( array_diff( $excludes, $exclude_rule_to_remove ) );
        }

        $schedule->save();

        $current_path = isset( $_POST['browse_dir'] ) ? sanitize_text_field( rawurldecode( wp_unslash( $_POST['browse_dir'] ) ) ) : ''; //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

        if ( empty( $current_path ) ) {
            $current_path = null;
        }

        $return = $this->get_excluded( $current_path );

        $out['e']                  = $return['e'];
        $out['current_browse_dir'] = isset( $_POST['browse_dir'] ) ? sanitize_text_field( wp_unslash( $_POST['browse_dir'] ) ) : '';
        // phpcs:enable
        return $out;
    }

    /**
     * General exclusion rules.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function general_exclude_add_rule() {

        $sch_id   = $this->check_schedule();
        $schedule = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( $sch_id ) );
        // phpcs:disable WordPress.Security.NonceVerification
        $exclude_paths = isset( $_POST['exclude_paths'] ) ? rawurldecode( wp_unslash( $_POST['exclude_paths'] ) ) : '';  //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
        $exclude_paths = explode( "\n", $exclude_paths );
        if ( is_array( $exclude_paths ) && count( $exclude_paths ) > 0 ) {
            foreach ( $exclude_paths as $excl_rule ) {
                $excl_rule = trim( $excl_rule );
                $excl_rule = trim( $excl_rule, '/' );

                if ( empty( $excl_rule ) ) {
                        continue;
                }

                $exclude_rule = ABSPATH . $excl_rule;
                $path         = realpath( $exclude_rule );
                if ( false !== $path ) {
                    $schedule->set_excludes( $exclude_rule, true );
                    $schedule->save();
                }
            }
        }

        $un_exclude_paths = isset( $_POST['un_exclude_paths'] ) ? rawurldecode( wp_unslash( $_POST['un_exclude_paths'] ) ) : '';  //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
        $un_exclude_paths = explode( "\n", $un_exclude_paths );

        if ( is_array( $un_exclude_paths ) && count( get_user_excludes ) > 0 ) {
            foreach ( $un_exclude_paths as $exclude_rule_to_remove ) {
                    $exclude_rule_to_remove = trim( $exclude_rule_to_remove );
                    $exclude_rule_to_remove = trim( $exclude_rule_to_remove, '/' );

                if ( empty( $exclude_rule_to_remove ) ) {
                    continue;
                }

                    $excludes = $schedule->get_excludes();
                if ( method_exists( $excludes, 'get_user_excludes' ) ) {
                    $schedule->set_excludes( array_diff( $excludes->get_user_excludes(), (array) $exclude_rule_to_remove ) );
                } else {
                    $schedule->set_excludes( array_diff( $excludes, $exclude_rule_to_remove ) );
                }
                    $schedule->save();
            }
        }
        // phpcs:enable
        return array( 'result' => 'SUCCESS' );
    }

    /**
     * Update backup schedule.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function update_schedule() {
        // phpcs:disable WordPress.Security.NonceVerification
        $sch_id  = isset( $_POST['schedule_id'] ) ? sanitize_text_field( rawurldecode( wp_unslash( $_POST['schedule_id'] ) ) ) : 0; //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
        $options = isset( $_POST['options'] ) ? json_decode( base64_decode( wp_unslash( $_POST['options'] ) ), true ) : false; // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions,WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- base64_encode function is used for http encode compatible.
        // phpcs:enable
        if ( ! is_array( $options ) || empty( $options ) || empty( $sch_id ) ) {
            return array( 'error' => esc_html__( 'Schedule data', 'mainwp-child' ) );
        }

        $filter_opts = array(
            'type',
            'email',
            'reoccurrence',
            'max_backups',
            'schedule_start_time',
        );

        $out = array();
        if ( is_array( $options ) ) {
            $old_options = get_option( 'hmbkp_schedule_' . $sch_id );
            if ( is_array( $old_options ) ) {
                foreach ( $old_options as $key => $val ) {
                    if ( ! in_array( $key, $filter_opts ) ) {
                        $options[ $key ] = $old_options[ $key ];
                    }
                }
            }

            update_option( 'hmbkp_schedule_' . $sch_id, $options );
            delete_transient( 'hmbkp_schedules' );
            $out['result'] = 'SUCCESS';
        } else {
            $out['result'] = 'NOTCHANGE';
        }

        $schedule = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( $sch_id ) );

        if ( ! empty( $options['reoccurrence'] ) && ! empty( $options['schedule_start_time'] ) ) {
            // Calculate the start time depending on the recurrence.
            $start_time = $options['schedule_start_time'];
            if ( $start_time ) {
                $schedule->set_schedule_start_time( $start_time );
            }
        }

        if ( ! empty( $options['reoccurrence'] ) ) {
            $schedule->set_reoccurrence( $options['reoccurrence'] );
        }
        $out['next_occurrence'] = $schedule->get_next_occurrence( false );

        return $out;
    }

    /**
     * Save all backup schedules.
     *
     * @used-by MainWP_Child_Back_Up_WordPress::action() Fire off certain BackUpWordPress plugin actions.
     *
     * @return array Action result.
     */
    public function save_all_schedules() {
        // phpcs:disable WordPress.Security.NonceVerification
        $schedules = isset( $_POST['all_schedules'] ) ? json_decode( base64_decode( wp_unslash( $_POST['all_schedules'] ) ), true ) : false; // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions,WordPress.Security.NonceVerification,WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- base64_encode function is used for http encode compatible..
        // phpcs:enable
        if ( ! is_array( $schedules ) || empty( $schedules ) ) {
            return array( 'error' => esc_html__( 'Schedule data', 'mainwp-child' ) );
        }

        $out = array();
        foreach ( $schedules as $sch_id => $sch ) {
            if ( empty( $sch_id ) || ! isset( $sch['options'] ) || ! is_array( $sch['options'] ) ) {
                continue;
            }
            $options     = $sch['options'];
            $filter_opts = array(
                'type',
                'email',
                'reoccurrence',
                'max_backups',
                'schedule_start_time',
            );
            if ( is_array( $options ) ) {
                $old_options = get_option( 'hmbkp_schedule_' . $sch_id );
                if ( is_array( $old_options ) ) {
                    foreach ( $old_options as $key => $val ) {
                        if ( ! in_array( $key, $filter_opts ) ) {
                            $options[ $key ] = $old_options[ $key ];
                        }
                    }
                }
                update_option( 'hmbkp_schedule_' . $sch_id, $options );
            }

            $schedule = new \HM\BackUpWordPress\Scheduled_Backup( sanitize_text_field( $sch_id ) );

            if ( ! empty( $options['reoccurrence'] ) && ! empty( $options['schedule_start_time'] ) ) {
                // Calculate the start time depending on the recurrence.
                $start_time = $options['schedule_start_time'];
                if ( $start_time ) {
                    $schedule->set_schedule_start_time( $start_time );
                }
            }

            if ( ! empty( $options['reoccurrence'] ) ) {
                $schedule->set_reoccurrence( $options['reoccurrence'] );
            }
            $out['result'] = 'SUCCESS';
        }
        delete_transient( 'hmbkp_schedules' );
        return $out;
    }

    /**
     * Check if the BacupWordPress plugin is activated.
     *
     * @return bool Return true if the plugin is activated, false if not.
     */
    public static function is_activated() {
        if ( ! defined( 'HMBKP_PLUGIN_PATH' ) || ! class_exists( '\HM\BackUpWordPress\Plugin' ) ) {
            return false;
        }

        return true;
    }

    /**
     * Remove the BackupWordPress plugin from the list of all plugins when the plugin is hidden.
     *
     * @param array $plugins Array containing all installed plugins.
     *
     * @return array $plugins Array containing all installed plugins without the BackupWordPress.
     */
    public function all_plugins( $plugins ) {
        foreach ( $plugins as $key => $value ) {
            $plugin_slug = basename( $key, '.php' );
            if ( 'backupwordpress' === $plugin_slug ) {
                unset( $plugins[ $key ] );
            }
        }

        return $plugins;
    }

    /**
     * Remove the BackupWordPress menu item when the plugin is hidden.
     *
     * @uses wp_safe_redirect() Performs a safe (local) redirect, using wp_redirect().
     * @see https://developer.wordpress.org/reference/functions/wp_safe_redirect/
     *
     * @uses get_option() Retrieves an option value based on an option name.
     * @see https://developer.wordpress.org/reference/functions/get_option/
     */
    public function remove_menu() {

        /**
         * Submenu array.
         *
         * @global object
         */
        global $submenu;

        if ( isset( $submenu['tools.php'] ) ) {
            foreach ( $submenu['tools.php'] as $index => $item ) {
                if ( 'backupwordpress' === $item[2] ) {
                    unset( $submenu['tools.php'][ $index ] );
                    break;
                }
            }
        }

        $pos = isset( $_SERVER['REQUEST_URI'] ) ? stripos( sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) ), 'tools.php?page=backupwordpress' ) : false;
        if ( false !== $pos ) {
            wp_safe_redirect( get_option( 'siteurl' ) . '/wp-admin/index.php' );
            exit();
        }
    }
}