/**
  * Show maintenance page
  *
  * @return void
  */
 public function get_header()
 {
     Ai1wm_Maintenance::display();
 }
 /**
  * Finish import process
  *
  * @return void
  */
 public function finish()
 {
     // Set progress
     Ai1wm_Status::set(array('type' => 'finish', 'title' => __('Your data has been imported successfuly!', AI1WM_PLUGIN_NAME), 'message' => sprintf(__('You need to perform two more steps:<br />' . '<strong>1. You must save your permalinks structure twice. <a class="ai1wm-no-underline" href="%s" target="_blank">Permalinks Settings</a></strong> <small>(opens a new window)</small><br />' . '<strong>2. <a class="ai1wm-no-underline" href="https://wordpress.org/support/view/plugin-reviews/all-in-one-wp-migration?rate=5#postform" target="_blank">Review the plugin</a>.</strong> <small>(opens a new window)</small>', AI1WM_PLUGIN_NAME), admin_url('options-permalink.php#submit'))));
     // Disable maintenance mode
     Ai1wm_Maintenance::disable();
 }
 /**
  * Add database
  *
  * @return void
  */
 public function database()
 {
     // Set exclude database
     if ($this->should_exclude_database()) {
         // Disable maintenance mode
         Ai1wm_Maintenance::disable();
         // Redirect
         return $this->route_to('export');
     }
     // Set progress
     Ai1wm_Status::set(array('message' => __('Exporting database...', AI1WM_PLUGIN_NAME)));
     // Get databsae file
     $service = new Ai1wm_Service_Database($this->args);
     $service->export();
     // Get archive file
     $archive = new Ai1wm_Compressor($this->storage()->archive());
     // Add database to archive
     $archive->add_file($this->storage()->database(), AI1WM_DATABASE_NAME);
     $archive->close();
     // Set progress
     Ai1wm_Status::set(array('message' => __('Done exporting database.', AI1WM_PLUGIN_NAME)));
     // Disable maintenance mode
     Ai1wm_Maintenance::disable();
     // Redirect
     $this->route_to('export');
 }
<?php

if (Ai1wm_Maintenance::active()) {
    ?>
	<div class="ai1wm-message-warning">
		<?php 
    _e('Maintenance Mode is <strong>ON</strong>, switch it to ' . '<a href="#" id="ai1wm-maintenance-off">OFF</a>', AI1WM_PLUGIN_NAME);
    ?>
	</div>
<?php 
}
 /**
  * Import site
  *
  * @return StorageFile
  */
 public function import()
 {
     global $wp_version;
     $storage = StorageArea::getInstance();
     // Create import file
     $import_file = $storage->makeFile($this->options['import']['file']);
     // Extract archive
     try {
         try {
             $zip = ZipFactory::makeZipArchiver($import_file->getName(), !class_exists('ZipArchive'));
             $zip->extractTo($storage->getRootPath());
             $zip->close();
         } catch (Exception $e) {
             $zip = ZipFactory::makeZipArchiver($import_file->getName(), true);
             $zip->extractTo($storage->getRootPath());
             $zip->close();
         }
     } catch (Exception $e) {
         throw new Ai1wm_Import_Exception(_('Site could not be imported!<br />' . 'Archive file is broken or is not compatible with the plugin! Please verify your archive file.'));
     }
     // Verify package
     if ($this->should_import_package()) {
         // Enable maintenance mode
         Ai1wm_Maintenance::enable();
         // Database
         if ($this->should_import_database()) {
             $service = new Ai1wm_Service_Database($this->options);
             $service->import();
         }
         // Media
         if ($this->should_import_media()) {
             $service = new Ai1wm_Service_Media($this->options);
             $service->import();
         }
         // Sites (Network mode)
         if ($this->should_import_sites()) {
             $service = new Ai1wm_Service_Sites($this->options);
             $service->import();
         }
         // Themes
         if ($this->should_import_themes()) {
             $service = new Ai1wm_Service_Themes($this->options);
             $service->import();
         }
         // Plugins
         if ($this->should_import_plugins()) {
             $service = new Ai1wm_Service_Plugins($this->options);
             $service->import();
         }
         // Disable maintenance mode
         Ai1wm_Maintenance::disable();
     } else {
         throw new Ai1wm_Import_Exception(_('Site could not be imported!<br />' . 'Archive file is not compatible with the plugin! Please verify your archive file.'));
     }
     return $import_file;
 }
 /**
  * Export site
  *
  * @return StorageFile
  */
 public function export()
 {
     $storage = StorageArea::getInstance();
     // Enable maintenance mode
     Ai1wm_Maintenance::enable();
     // Create export file
     $export_file = $storage->makeFile();
     // Make archive file
     try {
         $zip = ZipFactory::makeZipArchiver($export_file->getName(), !class_exists('ZipArchive'), true);
     } catch (Exception $e) {
         $zip = ZipFactory::makeZipArchiver($export_file->getName(), true, true);
     }
     // Package
     if ($this->should_export_package()) {
         $service = new Ai1wm_Service_Package($this->options);
         $zip->addFromString(AI1WM_PACKAGE_NAME, $service->export());
     }
     // Database
     if ($this->should_export_database()) {
         $service = new Ai1wm_Service_Database($this->options);
         // Add database to archive
         $zip->addFile($service->export(), AI1WM_DATABASE_NAME);
     }
     // Media
     if ($this->should_export_media()) {
         $service = new Ai1wm_Service_Media($this->options);
         // Add media to archive
         $zip->addDir($service->export(), AI1WM_MEDIA_NAME);
         // Sites (Network mode)
         $service = new Ai1wm_Service_Sites($this->options);
         if ($sites = $service->export()) {
             // Add sites to archive
             $zip->addDir($sites, AI1WM_SITES_NAME);
         }
     }
     // Themes
     if ($this->should_export_themes()) {
         $service = new Ai1wm_Service_Themes($this->options);
         // Add themes to archive
         $zip->addDir($service->export(), AI1WM_THEMES_NAME);
     }
     // Plugins
     if ($this->should_export_plugins()) {
         $service = new Ai1wm_Service_Plugins($this->options);
         // Add plugins to archive
         if ($plugins = $service->get_installed_plugins()) {
             $zip->addDir($service->export(), AI1WM_PLUGINS_NAME, $plugins);
         }
     }
     // Disable maintenance mode
     Ai1wm_Maintenance::disable();
     return $export_file;
 }