<?php

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// phpcs:ignoreFile

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/**

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* The preset class.

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*

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* @since 5.3.0

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*/

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namespace LiteSpeed;

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defined('WPINC') || exit();

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class Preset extends Import {

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protected $_summary;

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const MAX_BACKUPS = 10;

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const TYPE_APPLY = 'apply';

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const TYPE_RESTORE = 'restore';

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const STANDARD_DIR = LSCWP_DIR . 'data/preset';

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const BACKUP_DIR = LITESPEED_STATIC_DIR . '/auto-backup';

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/**

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* Returns sorted backup names

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*

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* @since 5.3.0

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* @access public

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*/

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public static function get_backups() {

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self::init_filesystem();

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global $wp_filesystem;

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$backups = array_map(

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function ( $path ) {

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return self::basename($path['name']);

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},

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$wp_filesystem->dirlist(self::BACKUP_DIR) ?: array()

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);

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rsort($backups);

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return $backups;

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}

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/**

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* Removes extra backup files

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*

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* @since 5.3.0

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* @access public

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*/

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public static function prune_backups() {

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$backups = self::get_backups();

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global $wp_filesystem;

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foreach (array_slice($backups, self::MAX_BACKUPS) as $backup) {

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$path = self::get_backup($backup);

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$wp_filesystem->delete($path);

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Debug2::debug('[Preset] Deleted old backup from ' . $backup);

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}

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}

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/**

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* Returns a settings file's extensionless basename given its filesystem path

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*

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* @since 5.3.0

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* @access public

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*/

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public static function basename( $path ) {

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return basename($path, '.data');

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}

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/**

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* Returns a standard preset's path given its extensionless basename

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*

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* @since 5.3.0

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* @access public

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*/

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public static function get_standard( $name ) {

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return path_join(self::STANDARD_DIR, $name . '.data');

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}

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/**

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* Returns a backup's path given its extensionless basename

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*

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* @since 5.3.0

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* @access public

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*/

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public static function get_backup( $name ) {

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return path_join(self::BACKUP_DIR, $name . '.data');

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}

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/**

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* Initializes the global $wp_filesystem object and clears stat cache

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*

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* @since 5.3.0

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*/

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static function init_filesystem() {

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require_once ABSPATH . '/wp-admin/includes/file.php';

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\WP_Filesystem();

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clearstatcache();

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}

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/**

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* Init

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*

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* @since 5.3.0

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*/

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public function __construct() {

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Debug2::debug('[Preset] Init');

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$this->_summary = self::get_summary();

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}

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/**

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* Applies a standard preset's settings given its extensionless basename

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*

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* @since 5.3.0

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* @access public

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*/

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public function apply( $preset ) {

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$this->make_backup($preset);

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$path = self::get_standard($preset);

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$result = $this->import_file($path) ? $preset : 'error';

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$this->log($result);

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}

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/**

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* Restores settings from the backup file with the given timestamp, then deletes the file

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*

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* @since 5.3.0

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* @access public

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*/

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public function restore( $timestamp ) {

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$backups = array();

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foreach (self::get_backups() as $backup) {

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if (preg_match('/^backup-' . $timestamp . '(-|$)/', $backup) === 1) {

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$backups[] = $backup;

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}

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}

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if (empty($backups)) {

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$this->log('error');

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return;

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}

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$backup = $backups[0];

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$path = self::get_backup($backup);

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if (!$this->import_file($path)) {

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$this->log('error');

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return;

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}

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self::init_filesystem();

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global $wp_filesystem;

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$wp_filesystem->delete($path);

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Debug2::debug('[Preset] Deleted most recent backup from ' . $backup);

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$this->log('backup');

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}

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/**

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* Saves current settings as a backup file, then prunes extra backup files

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*

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* @since 5.3.0

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* @access public

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*/

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public function make_backup( $preset ) {

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$backup = 'backup-' . time() . '-before-' . $preset;

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$data = $this->export(true);

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$path = self::get_backup($backup);

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File::save($path, $data, true);

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Debug2::debug('[Preset] Backup saved to ' . $backup);

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self::prune_backups();

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}

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/**

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* Tries to import from a given settings file

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*

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* @since 5.3.0

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*/

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function import_file( $path ) {

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$debug = function ( $result, $name ) {

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$action = $result ? 'Applied' : 'Failed to apply';

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Debug2::debug('[Preset] ' . $action . ' settings from ' . $name);

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return $result;

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};

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$name = self::basename($path);

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$contents = file_get_contents($path);

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if (false === $contents) {

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Debug2::debug('[Preset] ❌ Failed to get file contents');

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return $debug(false, $name);

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}

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$parsed = array();

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try {

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// Check if the data is v4+

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if (strpos($contents, '["_version",') === 0) {

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$contents = explode("\n", $contents);

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foreach ($contents as $line) {

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$line = trim($line);

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if (empty($line)) {

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continue;

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}

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list($key, $value) = \json_decode($line, true);

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$parsed[$key] = $value;

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}

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} else {

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$parsed = \json_decode(base64_decode($contents), true);

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}

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} catch (\Exception $ex) {

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Debug2::debug('[Preset] ❌ Failed to parse serialized data');

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return $debug(false, $name);

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}

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if (empty($parsed)) {

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Debug2::debug('[Preset] ❌ Nothing to apply');

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return $debug(false, $name);

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}

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$this->cls('Conf')->update_confs($parsed);

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return $debug(true, $name);

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}

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/**

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* Updates the log

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*

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* @since 5.3.0

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*/

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function log( $preset ) {

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$this->_summary['preset'] = $preset;

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$this->_summary['preset_timestamp'] = time();

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self::save_summary();

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}

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/**

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* Handles all request actions from main cls

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*

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* @since 5.3.0

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* @access public

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*/

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public function handler() {

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$type = Router::verify_type();

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switch ($type) {

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case self::TYPE_APPLY:

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$this->apply(!empty($_GET['preset']) ? $_GET['preset'] : false);

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break;

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case self::TYPE_RESTORE:

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$this->restore(!empty($_GET['timestamp']) ? $_GET['timestamp'] : false);

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break;

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default:

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break;

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}

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Admin::redirect();

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}

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}

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