<?php
/**
 * MainWP Updates
 *
 * Manage updates on the site.
 *
 * @package MainWP\Child
 */

namespace MainWP\Child;

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

//phpcs:disable Generic.Metrics.CyclomaticComplexity -- Current complexity is the only way to achieve desired results, pull request solutions appreciated.

/**
 * Class MainWP_Child_Updates
 *
 * Manage updates on the site.
 */
class MainWP_Child_Updates { //phpcs:ignore -- NOSONAR - multi methods.

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

    /**
     * Private variable to filter update transients without last_checked and checked fields.
     *
     * @var object Filter update transients.
     */
    private $filterFunction = null;


    /**
     * Method get_class_name()
     *
     * Get class name.
     *
     * @return string __CLASS__ Class name.
     */
    public static function get_class_name() {
        return __CLASS__;
    }

    /**
     * MainWP_Child_Updates constructor.
     *
     * Run any time class is called.
     */
    public function __construct() {
        $this->filterFunction = function ( $a ) {
            if ( empty( $a ) ) {
                return false;
            }
            if ( is_object( $a ) && property_exists( $a, 'last_checked' ) && ! property_exists( $a, 'checked' ) ) {
                return false;
            }
            return $a;
        };
    }

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

        return static::$instance;
    }

    /**
     * Method include_updates()
     *
     * Include WP Core files required for performing updates.
     */
    private function include_updates() {
        include_once ABSPATH . '/wp-admin/includes/class-wp-upgrader.php'; // NOSONAR -- WP compatible.

        if ( file_exists( ABSPATH . '/wp-admin/includes/screen.php' ) ) {
            include_once ABSPATH . '/wp-admin/includes/screen.php'; // NOSONAR -- WP compatible.
        }
        if ( file_exists( ABSPATH . '/wp-admin/includes/template.php' ) ) {
            include_once ABSPATH . '/wp-admin/includes/template.php'; // NOSONAR -- WP compatible.
        }
        if ( file_exists( ABSPATH . '/wp-admin/includes/misc.php' ) ) {
            include_once ABSPATH . '/wp-admin/includes/misc.php'; // NOSONAR -- WP compatible.
        }
        include_once ABSPATH . '/wp-admin/includes/file.php'; // NOSONAR -- WP compatible.
        include_once ABSPATH . '/wp-admin/includes/plugin.php'; // NOSONAR -- WP compatible.
        include_once ABSPATH . '/wp-admin/includes/plugin-install.php'; // NOSONAR -- WP compatible.
    }

    /**
     * Method upgrade_plugin_theme()
     *
     * Fire off plugins and themes updates and write feedback to the synchronization information.
     *
     * @uses \MainWP\Child\MainWP_Child_Updates::upgrade_plugin() Execute plugins updates.
     * @uses \MainWP\Child\MainWP_Child_Updates::upgrade_theme() Execute themes updates.
     * @uses \MainWP\Child\MainWP_Child_Stats::get_site_stats()
     * @uses \MainWP\Child\MainWP_Helper::get_wp_filesystem()
     * @uses \MainWP\Child\MainWP_Helper::instance()->error()
     * @uses \MainWP\Child\MainWP_Helper::write()
     */
    public function upgrade_plugin_theme() {

        /**
         * Action before update plugin, theme.
         *
         * @since 4.3
         */
        do_action( 'mainwp_child_before_update_plugin_theme' );

        MainWP_Helper::maybe_set_doing_cron();

        MainWP_Helper::get_wp_filesystem();

        $this->include_updates();

        $information                     = array();
        $information['upgrades']         = array();
        $information['other_data']       = array();
        $mwp_premium_updates_to_do       = array();
        $mwp_premium_updates_to_do_slugs = array();
        $premiumUpgrader                 = false;

        $hooks = array(
            'upgrader_pre_install',
        );
        MainWP_Child_Actions::get_instance()->init_custom_hooks( $hooks );

        static::enable_pre_auto_rollback_hooking();

        $plugin_update = false;
        // phpcs:disable WordPress.Security.NonceVerification
        if ( isset( $_POST['type'] ) && 'plugin' === $_POST['type'] ) {
            $this->upgrade_plugin( $information, $mwp_premium_updates_to_do, $mwp_premium_updates_to_do_slugs, $premiumUpgrader );
            $plugin_update = true;
        } elseif ( isset( $_POST['type'] ) && 'theme' === $_POST['type'] ) {
            $this->upgrade_theme( $information, $mwp_premium_updates_to_do, $mwp_premium_updates_to_do_slugs, $premiumUpgrader );
        } else {
            MainWP_Helper::instance()->error( esc_html__( 'Invalid request!', 'mainwp-child' ) );
        }

        if ( count( $mwp_premium_updates_to_do ) > 0 ) {
            $this->update_premiums_to_do( $information, $premiumUpgrader, $mwp_premium_updates_to_do, $mwp_premium_updates_to_do_slugs );
        }

        /**
         * WP-Rocket auto cache purge.
         *
         * Purge cache after updates.
         *
         * @params $information.
         */
        MainWP_Child_Cache_Purge::instance()->auto_purge_cache();

        if ( ! $plugin_update ) {
            // Save Status results.
            $information['sync'] = MainWP_Child_Stats::get_instance()->get_site_stats( array(), false ); // causing sync plugins updates info are not correct.
        }

        // ** Send data to MainWP Dashboard. **//

        // Send last purged time stamp to MainWP Dashboard.
        $information['mainwp_cache_control_last_purged'] = get_option( 'mainwp_cache_control_last_purged', 0 );
        // Send active cache solution to MainWP Dashboard.
        $information['mainwp_cache_control_cache_solution'] = get_option( 'mainwp_cache_control_cache_solution', 0 );
        // Send data for Cache Control Logs.
        $information['mainwp_cache_control_logs'] = get_option( 'mainwp_cache_control_log', '' );

        $send_exit = ! isset( $_POST['send_exit'] ) || true === $_POST['send_exit'] ? true : false;
        if ( $send_exit ) {
            MainWP_Helper::write( $information );
        }
        // phpcs:enable WordPress.WP.AlternativeFunctions
    }


    /**
     * Method upgrade_plugin()
     *
     * Initiate the plugin update process.
     *
     * @param array $information                    An array containing the synchronization information.
     * @param array $mwp_premium_updates_to_do       An array containing the list of premium plugins to update.
     * @param array $mwp_premium_updates_to_do_slugs An array containing the list of premium plugins slugs to update.
     * @param bool  $premiumUpgrader                If true, use premium upgrader.
     *
     * @uses MainWP_Child_Updates::to_upgrade_plugins() Complete the plugins update process.
     * @uses MainWP_Child_Updates::to_support_some_premiums_updates() Custom support for some premium plugins.
     * @uses \MainWP\Child\MainWP_Helper::instance()->error()
     * @uses get_plugin_updates() The WordPress Core get plugin updates function.
     * @see https://developer.wordpress.org/reference/functions/get_plugin_updates/
     *
     * @used-by MainWP_Child_Updates::upgrade_plugin_theme() Fire off plugins and themes updates and write feedback to the synchronization information.
     */
    private function upgrade_plugin( &$information, &$mwp_premium_updates_to_do, &$mwp_premium_updates_to_do_slugs, &$premiumUpgrader ) { //phpcs:ignore -- NOSONAR - complex.

        include_once ABSPATH . '/wp-admin/includes/update.php'; // NOSONAR -- WP compatible.
        if ( null !== $this->filterFunction ) {
            add_filter( 'pre_site_transient_update_plugins', $this->filterFunction, 99 );
        }
        // phpcs:disable WordPress.Security.NonceVerification
        // to fix conflict.
        MainWP_Utility::remove_filters_by_hook_name( 'update_plugins_oxygenbuilder.com', 10 );
        // phpcs:disable WordPress.Security.NonceVerification
        $plugins = isset( $_POST['list'] ) ? explode( ',', urldecode( wp_unslash( $_POST['list'] ) ) ) : array(); //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

        $this->to_support_some_premiums_updates( $plugins );

        /**
         * WordPress current filter.
         *
         * @global array $wp_current_filter WordPress current filter.
         */
        global $wp_current_filter;

        $wp_current_filter[] = 'load-plugins.php'; // phpcs:ignore -- Required for custom plugin installations, pull request solutions appreciated.
        wp_update_plugins();

        // prevent premium plugins re-create update info.
        remove_all_filters( 'pre_set_site_transient_update_plugins' );

        // support cached premium plugins update info, hooking in the bulk_upgrade().
        add_filter( 'pre_site_transient_update_plugins', array( $this, 'set_cached_update_plugins' ) );

        $information['plugin_updates'] = get_plugin_updates();

        $plugins = isset( $_POST['list'] ) ? explode( ',', urldecode( wp_unslash( $_POST['list'] ) ) ) : array(); //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
        // phpcs:enable WordPress.WP.AlternativeFunctions

        $premiumPlugins = array();
        $premiumUpdates = get_option( 'mainwp_premium_updates' );
        if ( is_array( $premiumUpdates ) ) {
            $newPlugins = array();
            foreach ( $plugins as $plugin ) {
                if ( in_array( $plugin, $premiumUpdates ) ) {
                    $premiumPlugins[] = $plugin;
                } else {
                    $newPlugins[] = $plugin;
                }
            }
            $plugins = $newPlugins;
        }

        try {
            $plugins = $this->check_update_requires( $plugins );
        } catch ( MainWP_Exception $e ) {
            $message = $e->getMessage();
            MainWP_Helper::instance()->error( $message );
        }

        if ( count( $plugins ) > 0 ) {
            $this->to_update_plugins( $information, $plugins );
        }

        // support cached premium plugins update info, hooking in the bulk_upgrade().
        remove_filter( 'pre_site_transient_update_plugins', array( $this, 'set_cached_update_plugins' ), 10 );
        delete_site_transient( 'mainwp_update_plugins_cached' ); // fix cached update info.

        if ( ! empty( $premiumPlugins ) ) {
            $mwp_premium_updates = apply_filters( 'mwp_premium_perform_update', array() );
            if ( is_array( $mwp_premium_updates ) && is_array( $premiumPlugins ) ) {
                foreach ( $premiumPlugins as $premiumPlugin ) {
                    foreach ( $mwp_premium_updates as $key => $update ) {
                        $slug = ( isset( $update['slug'] ) ? $update['slug'] : $update['Name'] );
                        if ( 0 === strcmp( $slug, $premiumPlugin ) ) {
                            $mwp_premium_updates_to_do[ $key ] = $update;
                            $mwp_premium_updates_to_do_slugs[] = $premiumPlugin;
                        }
                    }
                }
            }
            unset( $mwp_premium_updates );
            // fix updates for Yithemes premium plugins that hook into upgrader_pre_download.
            $url             = 'update.php?action=update-selected&amp;plugins=' . rawurlencode( implode( ',', $plugins ) );
            $nonce           = 'bulk-update-plugins';
            $premiumUpgrader = new \Plugin_Upgrader( new \Bulk_Plugin_Upgrader_Skin( compact( 'nonce', 'url' ) ) );
        }

        if ( empty( $plugins ) && empty( $premiumPlugins ) ) {
            MainWP_Helper::instance()->error( esc_html__( 'Invalid request!', 'mainwp-child' ) );
        }

        if ( null !== $this->filterFunction ) {
            remove_filter( 'pre_site_transient_update_plugins', $this->filterFunction, 99 );
        }
    }

    /**
     * Method check_update_requires()
     *
     * Check update requires.
     *
     * @param array $plugins     An array containing plugins to be updated.
     *
     * @return array An array of available plugins updates.
     * @throws MainWP_Exception|MainWP_Exception Error MainWP_Exception.
     */
    private function check_update_requires( $plugins ) {
        if ( ! function_exists( 'is_php_version_compatible' ) || ! is_array( $plugins ) ) {
            return $plugins;
        }

        $tmpPlugins = array();
        foreach ( $plugins as $plugin ) {

            $plugin_data = array(
                'requires'     => '',
                'requires_php' => '',
            );

            $plugin_data = array_merge( $plugin_data, get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin ) );

            // Check for headers in the plugin's PHP file, give precedence to the plugin headers.
            $plugin_data['requires']     = ! empty( $plugin_data['RequiresWP'] ) ? $plugin_data['RequiresWP'] : $plugin_data['requires'];
            $plugin_data['requires_php'] = ! empty( $plugin_data['RequiresPHP'] ) ? $plugin_data['RequiresPHP'] : $plugin_data['requires_php'];

            $plugin_data['wp_compatible']  = is_wp_version_compatible( $plugin_data['requires'] );
            $plugin_data['php_compatible'] = is_php_version_compatible( $plugin_data['requires_php'] );

            if ( ! $plugin_data['wp_compatible'] || ! $plugin_data['php_compatible'] ) {
                // Current WordPress or PHP versions do not meet minimum requirements for update.
                if ( 1 === count( $plugins ) ) {
                    throw new MainWP_Exception( 'Current WordPress or PHP versions do not meet minimum requirements for update.' );
                }
                continue;
            }

            $tmpPlugins[] = $plugin;
        }
        return $tmpPlugins;
    }

    /**
     * Method to_update_plugins()
     *
     * Complete the plugins update process.
     *
     * @param array $information An array containing the synchronization information.
     * @param array $plugins     An array containing plugins to be updated.
     *
     * @uses \MainWP\Child\MainWP_Helper::instance()->error()
     *
     * @used-by MainWP_Child_Updates::upgrade_plugin() Initiate the plugin update process.
     */
    private function to_update_plugins( &$information, $plugins ) { //phpcs:ignore -- NOSONAR - complex.
        $failed = true;
            // fix updates for Yithemes premium plugins that hook into upgrader_pre_download.
        $url   = 'update.php?action=update-selected&amp;plugins=' . rawurlencode( implode( ',', $plugins ) );
        $nonce = 'bulk-update-plugins';

        do_action( 'mainwp_child_before_update', 'plugin', $plugins );

        $upgrader = new \Plugin_Upgrader( new \Bulk_Plugin_Upgrader_Skin( compact( 'nonce', 'url' ) ) );
        $result   = $upgrader->bulk_upgrade( $plugins );

        do_action( 'mainwp_child_after_update', 'plugin', $result, $plugins );

        if ( ! empty( $result ) ) {

            $plugins_info = MainWP_Child_Actions::get_instance()->get_current_plugins_info();

            $updated_plugins     = array();
            $updated_error_codes = array();
            foreach ( $result as $plugin => $info ) {
                $success            = false;
                $problematic_update = false;
                $error              = '';
                $up_errors_codes    = '';
                if ( empty( $info ) ) {
                    $up_errors_codes                    = 'undefined_error';
                    $information['upgrades'][ $plugin ] = false;
                    $api                                = apply_filters( 'plugins_api', false, 'plugin_information', array( 'slug' => $plugin ) );
                    if ( is_wp_error( $api ) ) {
                        $error                                    = $api->get_error_message();
                        $information['upgrades_error'][ $plugin ] = $error;
                        $up_errors_codes                          = $api->get_error_codes();
                    }
                    if ( ! is_wp_error( $api ) && ! empty( $api ) && isset( $api->download_link ) ) {
                        $res = $upgrader->install( $api->download_link );
                        if ( ! is_wp_error( $res ) && ! ( is_null( $res ) ) ) {
                            $information['upgrades'][ $plugin ] = true;
                            $success                            = true;
                        }
                        if ( is_wp_error( $res ) ) {
                            $error                                    = $api->get_error_message();
                            $information['upgrades_error'][ $plugin ] = $error;
                            $up_errors_codes                          = $api->get_error_codes();
                        }
                    }
                } elseif ( is_wp_error( $info ) ) {
                    $error                                    = $info->get_error_message();
                    $information['upgrades_error'][ $plugin ] = $error;
                    $errors_codes                             = $info->get_error_codes();
                    $up_errors_codes                          = $errors_codes;
                    if ( is_array( $errors_codes ) && in_array( 'mainwp_update_error_code', $errors_codes ) ) {
                        $problematic_update = true;
                    }
                } else {
                    $information['upgrades'][ $plugin ] = true;
                    $success                            = true;
                }

                if ( ! empty( $up_errors_codes ) && is_array( $up_errors_codes ) ) {
                    $up_errors_codes = implode( ',', $up_errors_codes );
                }

                $old_info = isset( $plugins_info[ $plugin ] ) ? $plugins_info[ $plugin ] : array();
                if ( ! is_array( $old_info ) ) {
                    $old_info = array();
                }
                $info = array(
                    'name'        => isset( $old_info['Name'] ) ? $old_info['Name'] : '',
                    'old_version' => isset( $old_info['Version'] ) ? $old_info['Version'] : '',
                    'slug'        => $plugin,
                    'success'     => $success ? 1 : 0,
                );

                if ( ! empty( $error ) ) {
                    $info['error'] = $error;
                }

                if ( $problematic_update ) {
                    $info['rollback'] = 1;
                }

                $current_info = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin );
                if ( ! is_array( $current_info ) ) {
                    $current_info = array();
                }
                if ( ! empty( $current_info['Version'] ) ) {
                    $info['version'] = $current_info['Version'];
                }

                if ( empty( $info['name'] ) && ! empty( $current_info['Name'] ) ) {
                    $info['name'] = $current_info['Name'];
                }

                $updated_plugins[ $plugin ] = $info;

                if ( ! empty( $up_errors_codes ) ) {
                    $updated_error_codes[ $plugin ] = $up_errors_codes;
                }
            }
            $information['other_data']['updated_data'] = $updated_plugins;
            if ( ! empty( $updated_error_codes ) ) {
                $information['other_data']['upgrade_error_codes'] = $updated_error_codes;
            }
            $failed = false;
        }

        if ( $failed ) {
            MainWP_Helper::instance()->error( esc_html__( 'Invalid request!', 'mainwp-child' ) );
        }
    }

    /**
     * Method upgrade_theme()
     *
     * Execute themes updates.
     *
     * @param array $information                    An array containing the synchronization information.
     * @param array $mwp_premium_updates_to_do       An array containing the list of premium themes to update.
     * @param array $mwp_premium_updates_to_do_slugs An array containing the list of premium themes slugs to update.
     * @param bool  $premiumUpgrader                If true, use premium upgrader.
     *
     * @uses \MainWP\Child\MainWP_Child_Updates::to_upgrade_themes() Complete the themes update process.
     * @uses \MainWP\Child\MainWP_Child_Updates::upgrade_get_theme_updates() Get theme updates information.
     * @uses \MainWP\Child\MainWP_Helper::instance()->error()
     *
     * @used-by \MainWP\Child\MainWP_Child_Updates::upgrade_plugin_theme() Fire off plugins and themes updates and write feedback to the synchronization information.
     */
    private function upgrade_theme( &$information, &$mwp_premium_updates_to_do, &$mwp_premium_updates_to_do_slugs, &$premiumUpgrader ) { //phpcs:ignore -- NOSONAR - complex.

        include_once ABSPATH . '/wp-admin/includes/update.php'; // NOSONAR -- WP compatible.
        if ( null !== $this->filterFunction ) {
            add_filter( 'pre_site_transient_update_themes', $this->filterFunction, 99 );
        }

        wp_update_themes();

        $last_update = get_site_transient( 'update_themes' );

        include_once ABSPATH . '/wp-admin/includes/theme.php'; // NOSONAR -- WP compatible.

        // to support cached premium themes update info, hooking in the bulk_upgrade().
        add_filter( 'pre_site_transient_update_themes', array( $this, 'set_cached_update_themes' ) );

        $information['theme_updates'] = $this->upgrade_get_theme_updates();
        // phpcs:disable WordPress.Security.NonceVerification
        $themes = isset( $_POST['list'] ) ? explode( ',', wp_unslash( $_POST['list'] ) ) : array(); //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
        // phpcs:enable WordPress.WP.AlternativeFunctions
        $premiumThemes  = array();
        $premiumUpdates = get_option( 'mainwp_premium_updates' );
        if ( is_array( $premiumUpdates ) ) {
            $newThemes = array();
            foreach ( $themes as $theme ) {
                if ( in_array( $theme, $premiumUpdates ) ) {
                    $premiumThemes[] = $theme;
                } else {
                    $newThemes[] = $theme;
                }
            }
            $themes = $newThemes;
        }

        if ( count( $themes ) > 0 ) {
            $this->to_upgrade_themes( $information, $themes, $last_update );
        }

        remove_filter( 'pre_site_transient_update_themes', array( $this, 'set_cached_update_themes' ), 10 );
        delete_site_transient( 'mainwp_update_themes_cached' ); // fix cached update info.

        if ( ! empty( $premiumThemes ) ) {
            $mwp_premium_updates             = apply_filters( 'mwp_premium_perform_update', array() );
            $mwp_premium_updates_to_do       = array();
            $mwp_premium_updates_to_do_slugs = array();
            if ( is_array( $premiumThemes ) && is_array( $mwp_premium_updates ) ) {
                foreach ( $premiumThemes as $premiumTheme ) {
                    foreach ( $mwp_premium_updates as $key => $update ) {
                        $slug = ( isset( $update['slug'] ) ? $update['slug'] : $update['Name'] );
                        if ( 0 === strcmp( $slug, $premiumTheme ) ) {
                            $mwp_premium_updates_to_do[ $key ] = $update;
                            $mwp_premium_updates_to_do_slugs[] = $slug;
                        }
                    }
                }
            }
            unset( $mwp_premium_updates );
            $premiumUpgrader = new \Theme_Upgrader( new \Bulk_Theme_Upgrader_Skin( compact( 'nonce', 'url' ) ) );
        }
        if ( empty( $themes ) && empty( $premiumThemes ) ) {
            MainWP_Helper::instance()->error( esc_html__( 'Invalid request!', 'mainwp-child' ) );
        }

        if ( null !== $this->filterFunction ) {
            remove_filter( 'pre_site_transient_update_themes', $this->filterFunction, 99 );
        }
    }

    /**
     * Method to_upgrade_themes()
     *
     * Complete the themes update process.
     *
     * @param array  $information An array containing the synchronization information.
     * @param array  $themes      An array containing themes to be updated.
     * @param string $last_update Contains the last update timestamp.
     *
     * @uses get_site_transient() Retrieves the value of a site transient.
     * @see https://developer.wordpress.org/reference/functions/get_site_transient/
     *
     * @uses set_site_transient() Sets/updates the value of a site transient.
     * @see https://developer.wordpress.org/reference/functions/set_site_transient/
     *
     * @used-by \MainWP\Child\MainWP_Child_Updates::upgrade_theme() Initiate the theme update process.
     *
     * @uses \MainWP\Child\MainWP_Helper::instance()->error()
     */
    private function to_upgrade_themes( &$information, $themes, $last_update ) { //phpcs:ignore -- NOSONAR - complex.
        $addFilterToFixUpdate_optimizePressTheme = false;
        if ( in_array( 'optimizePressTheme', $themes ) ) {
            $addFilterToFixUpdate_optimizePressTheme = true;
            add_filter( 'site_transient_update_themes', array( $this, 'hook_fix_optimize_press_theme_update' ), 99 );
        }

        $url   = 'update.php?action=update-selected&amp;themes=' . rawurlencode( implode( ',', $themes ) );
        $nonce = 'bulk-update-themes';

        if ( null !== $this->filterFunction ) {
            remove_filter( 'pre_site_transient_update_plugins', $this->filterFunction, 99 );
        }

        $last_update2 = get_site_transient( 'update_themes' );
        set_site_transient( 'update_themes', $last_update );

        do_action( 'mainwp_child_before_update', 'theme', $themes );

        $failed   = true;
        $upgrader = new \Theme_Upgrader( new \Bulk_Theme_Upgrader_Skin( compact( 'nonce', 'url' ) ) );
        $result   = $upgrader->bulk_upgrade( $themes );

        do_action( 'mainwp_child_after_update', 'theme', $result, $themes );

        if ( ! empty( $result ) ) {
            wp_clean_themes_cache();
            $themes_info         = MainWP_Child_Actions::get_instance()->get_current_themes_info();
            $updated_themes      = array();
            $updated_error_codes = array();
            foreach ( $result as $theme => $value ) {
                $success            = false;
                $error              = '';
                $problematic_update = false;
                $up_error_codes     = '';
                if ( empty( $value ) ) {
                    $information['upgrades'][ $theme ] = false;
                    $up_error_codes                    = 'undefined_error';
                } elseif ( is_wp_error( $value ) ) {
                    $error                             = $value->get_error_message();
                    $information['upgrades'][ $theme ] = false;
                    $errors_codes                      = $value->get_error_codes();
                    if ( is_array( $errors_codes ) && in_array( 'mainwp_update_error_code', $errors_codes ) ) {
                        $problematic_update = true;
                    }
                    $up_error_codes = $errors_codes;
                } else {
                    $information['upgrades'][ $theme ] = true;
                    $success                           = true;
                }

                if ( ! empty( $up_error_codes ) && is_array( $up_error_codes ) ) {
                    $up_error_codes = implode( ',', $up_error_codes );
                }

                $old_info = isset( $themes_info[ $theme ] ) ? $themes_info[ $theme ] : array();
                if ( ! is_array( $old_info ) ) {
                    $old_info = array();
                }
                $info = array(
                    'name'        => isset( $old_info['name'] ) ? $old_info['name'] : '',
                    'old_version' => isset( $old_info['version'] ) ? $old_info['version'] : '',
                    'slug'        => $theme,
                    'success'     => $success ? 1 : 0,
                );

                if ( $problematic_update ) {
                    $info['rollback'] = 1;
                }

                if ( ! empty( $error ) ) {
                    $info['error'] = $error;
                }

                $current_info = wp_get_theme( $theme );
                if ( ! is_array( $current_info ) ) {
                    $current_info = array();
                }

                $current_info = wp_get_theme( $theme );
                if ( is_object( $current_info ) ) {
                    $info['version'] = $current_info->display( 'Version', true, false );
                }

                $updated_themes[ $theme ] = $info;
                if ( ! empty( $up_error_codes ) ) {
                    $updated_error_codes[ $theme ] = $up_error_codes;
                }
            }
            $information['other_data']['updated_data'] = $updated_themes;
            if ( ! empty( $updated_error_codes ) ) {
                $information['other_data']['upgrade_error_codes'] = $updated_error_codes;
            }

            $failed = false;
        }

        if ( $failed ) {
            MainWP_Helper::instance()->error( esc_html__( 'Invalid request!', 'mainwp-child' ) );
        }

        if ( null !== $this->filterFunction ) {
            add_filter( 'pre_site_transient_update_themes', $this->filterFunction, 99 );
        }

        set_site_transient( 'update_themes', $last_update2 );

        if ( $addFilterToFixUpdate_optimizePressTheme ) {
            remove_filter(
                'site_transient_update_themes',
                array(
                    $this,
                    'hook_fix_optimize_press_theme_update',
                ),
                99
            );
        }
    }

    /**
     * Method update_premiums_to_do()
     *
     * Update premium plugins.
     *
     * @param array $information                    An array containing the synchronization information.
     * @param bool  $premiumUpgrader                If true, use premium upgrader.
     * @param array $mwp_premium_updates_to_do       An array containing the list of premium themes to update.
     * @param array $mwp_premium_updates_to_do_slugs An array containing the list of premium themes slugs to update.
     */
    private function update_premiums_to_do( &$information, $premiumUpgrader, $mwp_premium_updates_to_do, $mwp_premium_updates_to_do_slugs ) { //phpcs:ignore -- NOSONAR - complex.

        if ( ! isset( $information['other_data']['updated_data'] ) ) {
            $information['other_data']['updated_data'] = array();
        }

        $plugins_info    = MainWP_Child_Actions::get_instance()->get_current_plugins_info();
        $updated_plugins = array();

        // Upgrade via WP.
        // @see wp-admin/update.php.
        $results = $premiumUpgrader->bulk_upgrade( $mwp_premium_updates_to_do_slugs );
        if ( ! empty( $results ) ) {
            foreach ( $results as $plugin => $result ) {
                if ( ! empty( $result ) ) {

                    if ( is_wp_error( $result ) ) {
                        $slug = $plugin;

                        $update_info = array();
                        if ( is_array( $mwp_premium_updates_to_do ) ) {
                            $update_info = array_filter(
                                $mwp_premium_updates_to_do,
                                function ( $e ) use ( $slug ) {
                                    return isset( $e['slug'] ) && $e['slug'] === $slug;
                                }
                            );
                            if ( $update_info ) {
                                $update_info = current( $update_info );
                            }
                            if ( ! is_array( $update_info ) ) {
                                $update_info = array();
                            }
                        }

                        $problematic_update = false;
                        $error              = $result->get_error_message();
                        $errors_codes       = $result->get_error_codes();
                        if ( is_array( $errors_codes ) && in_array( 'mainwp_update_error_code', $errors_codes ) ) {
                            $problematic_update = true;
                        }

                        $old_info = isset( $plugins_info[ $slug ] ) ? $plugins_info[ $slug ] : array();

                        if ( ! is_array( $old_info ) ) {
                            $old_info = array();
                        }
                        $name = isset( $old_info['Name'] ) ? $old_info['Name'] : '';

                        $info = array(
                            'name'        => $name,
                            'old_version' => isset( $old_info['Version'] ) ? $old_info['Version'] : '',
                            'slug'        => $slug,
                            'success'     => 0,
                        );

                        if ( empty( $info['old_version'] ) && ! empty( $update_info['Version'] ) ) {
                            $info['old_version'] = $update_info['Version'];
                        }

                        if ( $problematic_update ) {
                            $info['rollback'] = 1;
                        }

                        if ( ! empty( $error ) ) {
                            $info['error'] = $error;
                        }

                        $current_info = get_plugin_data( WP_PLUGIN_DIR . '/' . $slug );
                        if ( ! is_array( $current_info ) ) {
                            $current_info = array();
                        }

                        if ( ! empty( $current_info['Version'] ) ) {
                            $info['version'] = $current_info['Version'];
                        }

                        if ( empty( $info['name'] ) && ! empty( $current_info['Name'] ) ) {
                            $info['name'] = $current_info['Name'];
                        }

                        if ( empty( $info['name'] ) ) {
                            $info['name'] = $slug;
                        }

                        $information['other_data']['updated_data'][ $slug ] = $info;

                    } else {
                        $information['upgrades'][ $plugin ] = true;
                    }
                    $updated_plugins[ $slug ] = 1; // to prevent try next and incorrect.
                }
            }
        }

        // Upgrade via callback.
        foreach ( $mwp_premium_updates_to_do as $update ) {

            if ( isset( $update['slug'] ) && isset( $updated_plugins[ $update['slug'] ] ) ) {
                continue;
            }

            $slug = ( isset( $update['slug'] ) ? $update['slug'] : $update['Name'] );

            if ( isset( $update['url'] ) ) {

                $installer = new \WP_Upgrader();

                $hook_extra = array();

                if ( 'plugin' === $update['type'] && false !== strpos( $slug, '/' ) ) {
                    $hook_extra = array(
                        'plugin'      => $slug,
                        'temp_backup' => array(
                            'slug' => dirname( $slug ),
                            'src'  => WP_PLUGIN_DIR,
                            'dir'  => 'plugins',
                        ),
                    );
                }

                $result = $installer->run(
                    array(
                        'package'           => $update['url'],
                        'destination'       => ( 'plugin' === $update['type'] ? WP_PLUGIN_DIR : WP_CONTENT_DIR . '/themes' ),
                        'clear_destination' => true,
                        'clear_working'     => true,
                        'hook_extra'        => $hook_extra,
                    )
                );

                $success                          = ! is_wp_error( $result ) && ! empty( $result );
                $information['upgrades'][ $slug ] = $success;

                $problematic_update = false;

                $error = '';

                if ( is_wp_error( $result ) ) {
                    $error        = $result->get_error_message();
                    $errors_codes = $result->get_error_codes();
                    if ( is_array( $errors_codes ) && in_array( 'mainwp_update_error_code', $errors_codes ) ) {
                        $problematic_update = true;
                    }
                }

                $name = ! empty( $update['name'] ) ? $update['name'] : '';

                if ( empty( $name ) ) {
                    $name = ! empty( $update['Name'] ) ? $update['Name'] : '';
                }

                $old_info = array();

                if ( 'plugin' === $update['type'] ) {
                    $old_info = isset( $plugins_info[ $slug ] ) ? $plugins_info[ $slug ] : array();
                    if ( ! is_array( $old_info ) ) {
                        $old_info = array();
                    }
                }

                $info = array(
                    'name'        => $name,
                    'old_version' => isset( $old_info['version'] ) ? $old_info['version'] : '',
                    'slug'        => $slug,
                    'success'     => $success ? 1 : 0,
                );

                if ( $problematic_update ) {
                    $info['rollback'] = 1;
                }

                if ( ! empty( $error ) ) {
                    $info['error'] = $error;
                }

                if ( 'plugin' === $update['type'] ) {
                    $current_info = get_plugin_data( WP_PLUGIN_DIR . '/' . $slug );
                    if ( ! is_array( $current_info ) ) {
                        $current_info = array();
                    }

                    if ( ! empty( $current_info['Version'] ) ) {
                        $info['version'] = $current_info['Version'];
                    }

                    if ( empty( $info['name'] ) && ! empty( $current_info['Name'] ) ) {
                        $info['name'] = $current_info['Name'];
                    }
                }

                if ( empty( $info['version'] ) && ! empty( $update['version'] ) ) {
                    $info['version'] = $update['version'];
                }

                if ( empty( $info['name'] ) ) {
                    $info['name'] = $slug;
                }

                $information['other_data']['updated_data'][ $slug ] = $info;

            } elseif ( isset( $update['callback'] ) ) {
                if ( is_array( $update['callback'] ) && isset( $update['callback'][0] ) && isset( $update['callback'][1] ) ) {
                    $update_result                    = call_user_func(
                        array(
                            $update['callback'][0],
                            $update['callback'][1],
                        )
                    );
                    $information['upgrades'][ $slug ] = $update_result;
                } elseif ( is_string( $update['callback'] ) ) {
                    $update_result                    = call_user_func( $update['callback'] );
                    $information['upgrades'][ $slug ] = $update_result;
                } else {
                    $information['upgrades'][ $slug ] = false;
                }
            } else {
                $information['upgrades'][ $slug ] = false;
            }
        }
    }

    /**
     * Method to_support_some_premiums_updates()
     *
     * Custom support for some premium plugins.
     *
     * @param array $plugins An array containing installed plugins information.
     *
     * @used-by MainWP_Child_Updates::upgrade_plugin() Initiate the plugin update process.
     */
    private function to_support_some_premiums_updates( $plugins ) {
        // Custom fix for the iThemes products.
        if ( in_array( 'backupbuddy/backupbuddy.php', $plugins ) && isset( $GLOBALS['ithemes_updater_path'] ) ) {
            if ( ! class_exists( '\Ithemes_Updater_Settings' ) ) {
                require_once $GLOBALS['ithemes_updater_path'] . '/settings.php'; // NOSONAR - WP compatible.
            }
            if ( class_exists( '\Ithemes_Updater_Settings' ) ) {
                $ithemes_updater = new \Ithemes_Updater_Settings();
                $ithemes_updater->update();
            }
        }
        // Custom fix for the smart-manager-for-wp-e-commerce update.
        if ( in_array( 'smart-manager-for-wp-e-commerce/smart-manager.php', $plugins ) && file_exists( plugin_dir_path( __FILE__ ) . '../../smart-manager-for-wp-e-commerce/pro/upgrade.php' ) && file_exists( plugin_dir_path( __FILE__ ) . '../../smart-manager-for-wp-e-commerce/smart-manager.php' ) ) {
            include_once plugin_dir_path( __FILE__ ) . '../../smart-manager-for-wp-e-commerce/smart-manager.php'; // NOSONAR -- WP compatible.
            include_once plugin_dir_path( __FILE__ ) . '../../smart-manager-for-wp-e-commerce/pro/upgrade.php'; // NOSONAR -- WP compatible.
        }
    }

    /**
     * Method upgrade_get_theme_updates()
     *
     * Get theme updates information.
     *
     * @return array An array of available theme updates information.
     *
     * @uses get_theme_updates() The WordPress Core get theme updates function.
     * @see https://developer.wordpress.org/reference/functions/get_theme_updates/
     *
     * @used-by \MainWP\Child\MainWP_Child_Updates::upgrade_theme() Execute themes updates.
     * @uses \MainWP\Child\MainWP_Helper::search()
     */
    public function upgrade_get_theme_updates() {
        $themeUpdates    = get_theme_updates();
        $newThemeUpdates = array();
        $theme_name      = wp_get_theme()->get( 'Name' );
        if ( is_array( $themeUpdates ) ) {
            foreach ( $themeUpdates as $slug => $themeUpdate ) {
                $newThemeUpdate            = array();
                $newThemeUpdate['update']  = $themeUpdate->update;
                $newThemeUpdate['Name']    = MainWP_Helper::search( $themeUpdate, 'Name' );
                $newThemeUpdate['Version'] = MainWP_Helper::search( $themeUpdate, 'Version' );
                $newThemeUpdate['active']  = ( $newThemeUpdate['Name'] === $theme_name ) ? 1 : 0;
                $newThemeUpdates[ $slug ]  = $newThemeUpdate;
            }
        }

        return $newThemeUpdates;
    }

    /**
     * Method hook_fix_optimize_press_theme_update()
     *
     * Cutom support for the Optimize Press theme.
     *
     * @param object $transient Object containig the update transient information.
     *
     * @used-by MainWP_Child_Update::to_upgrade_themes() Complete the themes update process.
     *
     * @return object $transient Object containig the update transient information.
     */
    public function hook_fix_optimize_press_theme_update( $transient ) {
        if ( ! defined( 'OP_FUNC' ) ) {
            return $transient;
        }

        $theme_slug = 'optimizePressTheme';

        if ( ! function_exists( 'op_sl_update' ) ) {
            require_once OP_FUNC . 'options.php'; // NOSONAR - WP compatible.
            require_once OP_FUNC . 'sl_api.php'; // NOSONAR - WP compatible.
        }
        $apiResponse = op_sl_update( 'theme' );

        if ( is_wp_error( $apiResponse ) ) {
            return $transient;
        }

        $obj              = new \stdClass();
        $obj->slug        = $theme_slug;
        $obj->new_version = $apiResponse->new_version;
        $obj->url         = $apiResponse->url;
        $obj->package     = $apiResponse->s3_package;
        $obj->sections    = array(
            'description' => $apiResponse->section->description,
            'changelog'   => $apiResponse->section->changelog,
        );

        $transient->response[ $theme_slug ] = (array) $obj;

        return $transient;
    }

    /**
     * Method set_cached_update_plugins()
     *
     * Support cached premium plugins update info, hooking in the bulk_upgrade().
     *
     * @param bool   $false_value true|false.
     * @param object $_transient_data Contains the transient data.
     *
     * @uses get_site_transient() Retrieves the value of a site transient.
     * @see https://developer.wordpress.org/reference/functions/get_site_transient/
     *
     * @return object $_transient_data Contains the updated transient data.
     */
    public function set_cached_update_plugins( $false_value = false, $_transient_data = null ) {

        if ( ! is_object( $_transient_data ) ) {
            $_transient_data = new \stdClass();
        }

        $pre                = false;
        $cached_update_info = get_site_transient( 'mainwp_update_plugins_cached' );
        if ( is_array( $cached_update_info ) && count( $cached_update_info ) > 0 ) {
            foreach ( $cached_update_info as $slug => $info ) {
                if ( ! isset( $_transient_data->response[ $slug ] ) && isset( $info->update ) ) {
                    $_transient_data->response[ $slug ] = $info->update;
                    $pre                                = true;
                }
            }
        }

        if ( false === $pre ) {
            return $false_value;
        }

        return $_transient_data;
    }

    /**
     * Method set_cached_update_themes()
     *
     * Support cached premium themes update info, hooking in the bulk_upgrade().
     *
     * @param bool   $false_value true|false.
     * @param object $_transient_data Contains the transient data.
     *
     * @uses get_site_transient() Retrieves the value of a site transient.
     * @see https://developer.wordpress.org/reference/functions/get_site_transient/
     *
     * @return object $_transient_data Contains the updated transient data.
     */
    public function set_cached_update_themes( $false_value = false, $_transient_data = null ) {

        if ( ! is_object( $_transient_data ) ) {
            $_transient_data = new \stdClass();
        }

        $pre                = false;
        $cached_update_info = get_site_transient( 'mainwp_update_themes_cached' );
        if ( is_array( $cached_update_info ) && count( $cached_update_info ) > 0 ) {
            foreach ( $cached_update_info as $slug => $info ) {
                if ( ! isset( $_transient_data->response[ $slug ] ) && isset( $info->update ) ) {
                    $_transient_data->response[ $slug ] = $info->update;
                    $pre                                = true;
                }
            }
        }

        if ( false === $pre ) {
            return $false_value;
        }

        return $_transient_data;
    }

    /**
     * Method detect_premium_themesplugins_updates()
     *
     * Detect premium plugins and themes updates.
     *
     * @uses get_site_transient() Retrieves the value of a site transient.
     * @see https://developer.wordpress.org/reference/functions/get_site_transient/
     *
     * @uses set_site_transient() Sets/updates the value of a site transient.
     * @see https://developer.wordpress.org/reference/functions/set_site_transient/
     *
     * @uses \MainWP\Child\MainWP_Child_Callable::is_callable_function()
     * @uses \MainWP\Child\MainWP_Child_Callable::call_function()
     */
    public function detect_premium_themesplugins_updates() {
        // phpcs:disable WordPress.Security.NonceVerification
        if ( isset( $_GET['_detect_plugins_updates'] ) && 'yes' === $_GET['_detect_plugins_updates'] ) {
            // to fix some premium plugins update notification.
            $current = get_site_transient( 'update_plugins' );
            set_site_transient( 'update_plugins', $current );

            add_filter( 'pre_site_transient_update_plugins', $this->filterFunction, 99 );
            $plugins = get_plugin_updates();
            remove_filter( 'pre_site_transient_update_plugins', $this->filterFunction, 99 );

            set_site_transient( 'mainwp_update_plugins_cached', $plugins, DAY_IN_SECONDS );
        }

        if ( isset( $_GET['_detect_themes_updates'] ) && 'yes' === $_GET['_detect_themes_updates'] ) {
            add_filter( 'pre_site_transient_update_themes', $this->filterFunction, 99 );
            $themes = get_theme_updates();
            remove_filter( 'pre_site_transient_update_themes', $this->filterFunction, 99 );

            set_site_transient( 'mainwp_update_themes_cached', $themes, DAY_IN_SECONDS );
        }

        $type = isset( $_GET['_request_update_premiums_type'] ) ? sanitize_text_field( wp_unslash( $_GET['_request_update_premiums_type'] ) ) : '';

        if ( 'plugin' === $type || 'theme' === $type ) {
            $list = isset( $_GET['list'] ) ? wp_unslash( $_GET['list'] ) : ''; //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

            if ( ! empty( $list ) ) {
                $_POST['type'] = $type;
                $_POST['list'] = $list;

                $function = 'upgradeplugintheme'; // to call function upgrade_plugin_theme().
                if ( MainWP_Child_Callable::get_instance()->is_callable_function( $function ) ) {
                    MainWP_Child_Callable::get_instance()->call_function( $function );
                }
            }
        }
        // phpcs:enable WordPress.WP.AlternativeFunctions
    }

    /**
     * Method upgrade_wp()
     *
     * Initiate the WordPress core files update.
     *
     * @uses \MainWP\Child\MainWP_Child_Updates::do_upgrade_wp() Run the WordPress Core update.
     * @uses \MainWP\Child\MainWP_Helper::get_wp_filesystem()
     * @uses \MainWP\Child\MainWP_Helper::write()
     */
    public function upgrade_wp() {

        MainWP_Helper::get_wp_filesystem();

        $information = array();

        include_once ABSPATH . '/wp-admin/includes/update.php'; // NOSONAR -- WP compatible.
        include_once ABSPATH . '/wp-admin/includes/class-wp-upgrader.php'; // NOSONAR -- WP compatible.

        if ( file_exists( ABSPATH . '/wp-admin/includes/screen.php' ) ) {
            include_once ABSPATH . '/wp-admin/includes/screen.php'; // NOSONAR -- WP compatible.
        }
        if ( file_exists( ABSPATH . '/wp-admin/includes/template.php' ) ) {
            include_once ABSPATH . '/wp-admin/includes/template.php'; // NOSONAR -- WP compatible.
        }
        include_once ABSPATH . '/wp-admin/includes/file.php'; // NOSONAR -- WP compatible.
        include_once ABSPATH . '/wp-admin/includes/misc.php'; // NOSONAR -- WP compatible.

        $locked = $this->check_core_updater_locked();
        if ( $locked ) {
            $information['error'] = esc_html__( 'Another update is currently in progress.', 'mainwp-child' );
            MainWP_Helper::write( $information );
        }

        /**
         * Action before update WP.
         *
         * @since 4.3
         */
        do_action( 'mainwp_child_before_update_wp' );

        if ( null !== $this->filterFunction ) {
            add_filter( 'pre_site_transient_update_core', $this->filterFunction, 99 );
        }
        if ( null !== $this->filterFunction ) {
            add_filter( 'pre_transient_update_core', $this->filterFunction, 99 );
        }
        $this->do_upgrade_wp( $information );

        if ( null !== $this->filterFunction ) {
            remove_filter( 'pre_site_transient_update_core', $this->filterFunction, 99 );
        }
        if ( null !== $this->filterFunction ) {
            remove_filter( 'pre_transient_update_core', $this->filterFunction, 99 );
        }

        /**
         * WP-Rocket auto cache purge.
         *
         * Purge cache after updates.
         *
         * @params $information.
         */
        MainWP_Child_Cache_Purge::instance()->auto_purge_cache();

        // Send last purged time stamp to MainWP Dashboard.
        $information['mainwp_cache_control_last_purged'] = get_option( 'mainwp_cache_control_last_purged', 0 );
        // Send active cache solution to MainWP Dashboard.
        $information['mainwp_cache_control_cache_solution'] = get_option( 'mainwp_cache_control_cache_solution', 0 );
        // Send data for Cache Control Logs.
        $information['mainwp_cache_control_logs'] = get_option( 'mainwp_cache_control_log', '' );

        MainWP_Helper::write( $information );
    }

    /**
     * Method do_upgrade_wp()
     *
     * Run the WordPress Core update.
     *
     * @param array $information An array containing the synchronization information.
     *
     * @used-by MainWP_Child_Updates::upgrade_wp() Initiate the WordPress core files update.
     */
    private function do_upgrade_wp( &$information ) { //phpcs:ignore -- NOSONAR - complex.
        // Check for new versions.
        MainWP_System::wp_mainwp_version_check();

        // Get WordPress version via the shared helper method for consistency.
        // phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase -- Using static access for centralized version retrieval
        $wp_ver = MainWP_Child_Server_Information_Base::get_wordpress_version();

        $core_updates = get_core_updates();
        if ( is_array( $core_updates ) && count( $core_updates ) > 0 ) {
            foreach ( $core_updates as $core_update ) {
                if ( 'latest' === $core_update->response ) {
                    $information['upgrade'] = 'SUCCESS';
                } elseif ( 'upgrade' === $core_update->response && get_locale() === $core_update->locale && version_compare( $wp_ver, $core_update->current, '<=' ) ) {
                    $old_ver     = $wp_ver;
                    $current_ver = $core_update->current;

                    // Upgrade!
                    $upgrade = false;
                    if ( class_exists( '\Core_Upgrader' ) ) {
                        $core    = new \Core_Upgrader();
                        $upgrade = $core->upgrade( $core_update );
                    }
                    // If this does not work - add code from /wp-admin/includes/class-wp-upgrader.php in the newer versions.
                    // So users can upgrade older versions too.
                    // 3rd option: 'wp_update_core'.

                    if ( ! is_wp_error( $upgrade ) ) {
                        $information['upgrade']     = 'SUCCESS';
                        $information['old_version'] = $old_ver;
                        $information['version']     = $current_ver;
                    } else {
                        $information['upgrade'] = 'WPERROR';
                    }
                    break;
                }
            }

            if ( ! isset( $information['upgrade'] ) ) {
                foreach ( $core_updates as $core_update ) {
                    if ( 'upgrade' === $core_update->response && version_compare( $wp_ver, $core_update->current, '<=' ) ) {
                        $old_ver     = $wp_ver;
                        $current_ver = $core_update->current;
                        // Upgrade!
                        $upgrade = false;
                        if ( class_exists( '\Core_Upgrader' ) ) {
                            $core    = new \Core_Upgrader();
                            $upgrade = $core->upgrade( $core_update );
                        }
                        // If this does not work - add code from /wp-admin/includes/class-wp-upgrader.php in the newer versions
                        // So users can upgrade older versions too.
                        // 3rd option: 'wp_update_core'.
                        if ( ! is_wp_error( $upgrade ) ) {
                            $information['upgrade']     = 'SUCCESS';
                            $information['old_version'] = $old_ver;
                            $information['version']     = $current_ver;
                        } else {
                            $information['upgrade'] = 'WPERROR';
                            $up_error_codes         = 'undefined_error';
                            if ( is_wp_error( $upgrade ) ) {
                                $up_error_codes = implode( ',', $upgrade->get_error_codes() );
                            }
                            if ( ! empty( $up_error_codes ) ) {
                                $information['other_data']['upgrade_error_codes'] = $up_error_codes;
                            }
                        }
                        break;
                    }
                }
            }
        } else {
            $information['upgrade'] = 'NORESPONSE';
        }
    }

    /**
     * Method check_core_updater_locked()
     *
     * Check core updater locked.
     *
     *  @return bool true locked.
     */
    private function check_core_updater_locked() {
        $lock_option = 'core_updater.lock';
        $lock_result = get_option( $lock_option );
        // There isn't a lock, bail.
        if ( ! $lock_result ) {
            return false;
        }

        $release_timeout = 15 * MINUTE_IN_SECONDS;
        // Check to see if the lock is still valid. If it is, bail.
        if ( $lock_result > ( time() - $release_timeout ) ) {
            return true;
        }
        return false;
    }


    /**
     * Method upgrade_translation()
     *
     * Update translations and set feedback to the sync information.
     *
     * @uses \MainWP\Child\MainWP_Child_Stats::get_site_stats()
     * @uses \MainWP\Child\MainWP_Helper::write()
     */
    public function upgrade_translation() { //phpcs:ignore -- NOSONAR - complex.
        MainWP_Helper::maybe_set_doing_cron();

        MainWP_Helper::get_wp_filesystem();
        include_once ABSPATH . '/wp-admin/includes/class-wp-upgrader.php'; // NOSONAR -- WP compatible.
        if ( file_exists( ABSPATH . '/wp-admin/includes/screen.php' ) ) {
            include_once ABSPATH . '/wp-admin/includes/screen.php'; // NOSONAR -- WP compatible.
        }
        if ( file_exists( ABSPATH . '/wp-admin/includes/template.php' ) ) {
            include_once ABSPATH . '/wp-admin/includes/template.php'; // NOSONAR -- WP compatible.
        }
        if ( file_exists( ABSPATH . '/wp-admin/includes/misc.php' ) ) {
            include_once ABSPATH . '/wp-admin/includes/misc.php'; // NOSONAR -- WP compatible.
        }
        include_once ABSPATH . '/wp-admin/includes/file.php'; // NOSONAR -- WP compatible.

        include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php'; // NOSONAR -- WP compatible.

        // to fix conflict.
        MainWP_Utility::remove_filters_by_hook_name( 'update_plugins_oxygenbuilder.com', 10 );

        MainWP_System::wp_mainwp_version_check();
        wp_update_themes();
        wp_update_plugins();
         // phpcs:disable WordPress.Security.NonceVerification
        $upgrader             = new \Language_Pack_Upgrader( new \Language_Pack_Upgrader_Skin( compact( 'url', 'nonce', 'title', 'context' ) ) );
        $translations         = isset( $_POST['list'] ) ? explode( ',', urldecode( wp_unslash( $_POST['list'] ) ) ) : array(); //phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
        $all_language_updates = wp_get_translation_updates();
         // phpcs:enable WordPress.WP.AlternativeFunctions
        $language_updates = array();
        foreach ( $all_language_updates as $current_language_update ) {
            if ( in_array( $current_language_update->slug, $translations ) ) {
                $language_updates[] = $current_language_update;
            }
        }

        $updated_trans       = array();
        $updated_error_codes = array();

        $result = empty( $language_updates ) ? false : $upgrader->bulk_upgrade( $language_updates );
        if ( ! empty( $result ) ) {
            $count_result = count( $result );
            for ( $i = 0; $i < $count_result; $i++ ) {
                $success        = false;
                $up_error_codes = '';
                if ( empty( $result[ $i ] ) || is_wp_error( $result[ $i ] ) ) {
                    $up_error_codes = 'undefined_error';
                    if ( is_wp_error( $result[ $i ] ) ) {
                        $up_error_codes = implode( ',', $result[ $i ]->get_error_codes() );
                    }
                    $information['upgrades'][ $language_updates[ $i ]->slug ] = false;
                } else {
                    $information['upgrades'][ $language_updates[ $i ]->slug ] = true;
                    $success = true;
                }

                if ( ! empty( $up_error_codes ) ) {
                    $updated_error_codes[ $language_updates[ $i ]->slug ] = $up_error_codes;
                }

                if ( isset( $language_updates[ $i ] ) ) {
                    $array_item = (array) $language_updates[ $i ];
                    if ( isset( $array_item['slug'] ) ) {
                        $_slug = $array_item['slug'];
                        $name  = $upgrader->get_name_for_update( $language_updates[ $i ] );
                        if ( empty( $name ) || ! is_string( $name ) ) {
                            $name = $_slug;
                        }
                        $item            = array();
                        $item['name']    = $name;
                        $item['slug']    = $_slug;
                        $item['type']    = isset( $array_item['type'] ) ? $array_item['type'] : '';
                        $item['version'] = isset( $array_item['version'] ) ? $array_item['version'] : '';
                        $item['success'] = $success ? 1 : 0;

                        $updated_trans[ $language_updates[ $i ]->slug ] = $item;
                    }
                }
            }
        } else {
            $information['upgrades'] = array(); // Fix error message when translations updated.
        }
        $information['other_data']['updated_data'] = $updated_trans;
        if ( ! empty( $updated_error_codes ) ) {
            $information['other_data']['upgrade_error_codes'] = $updated_error_codes;
        }
        $information['sync'] = MainWP_Child_Stats::get_instance()->get_site_stats( array(), false );
        MainWP_Helper::write( $information );
    }


    /**
     * Method enable_pre_auto_rollback_hooking().
     */
    public static function enable_pre_auto_rollback_hooking() {
        add_filter( 'upgrader_install_package_result', array( static::get_class_name(), 'upgrader_auto_rollback_hooking' ), 99, 2 );
    }

    /**
     * Method upgrader_auto_rollback_hooking().
     *
     * @param array|WP_Error $result     Result from WP_Upgrader::install_package().
     * @param array          $hook_extra Extra arguments passed to hooked filters.
     */
    public static function upgrader_auto_rollback_hooking( $result, $hook_extra = array() ) {
        if ( is_wp_error( $result ) && is_array( $hook_extra ) && ! empty( $hook_extra['temp_backup'] ) ) {
            $result->add( 'mainwp_update_error_code', 'Update error.' );
        }
        return $result;
    }
}
