n the plugin page.
		if ( $this->plugin_page === $hook ) {
			wp_enqueue_script( 'jquery-ui-dialog' );
			wp_enqueue_style( 'wp-jquery-ui-dialog' );

			wp_enqueue_script( 'ocdi-main-js', PT_OCDI_URL . 'assets/js/main.js' , array( 'jquery', 'jquery-ui-dialog' ), PT_OCDI_VERSION );

			// Get theme data.
			$theme = wp_get_theme();

			wp_localize_script( 'ocdi-main-js', 'ocdi',
				array(
					'ajax_url' => admin_url( 'admin-ajax.php' ),
					'ajax_nonce' => wp_create_nonce( 'ocdi-ajax-verification' ),
					'import_files' => $this->import_files,
					'wp_customize_on' => apply_filters( 'pt-ocdi/enable_wp_customize_save_hooks', false ),
					'import_popup' => apply_filters( 'pt-ocdi/enable_grid_layout_import_popup_confirmation', true ),
					'theme_screenshot' => $theme->get_screenshot(),
					'dashboard_link' => get_admin_url( null, 'admin.php?page=ohio_hub' ),
					'texts' => array(
						'missing_preview_image' => esc_html__( 'No preview image defined for this import.', 'ohio-importer' ),
						'dialog_title' => esc_html__( 'Demo Import', 'ohio-importer' ),
						'dialog_no' => esc_html__( 'Cancel', 'ohio-importer' ),
						'dialog_close' => esc_html__( 'Close', 'ohio-importer' ),
						'dialog_activate' => esc_html__( 'Activate', 'ohio-importer' ),
						'dialog_yes' => esc_html__( 'Yes, import!', 'ohio-importer' ),
						'install_globals' => esc_html__( 'Install Theme Settings', 'ohio-importer' ),
					),
					'dialog_options' => apply_filters( 'pt-ocdi/confirmation_dialog_options', [] )
				)
			);

			wp_enqueue_style( 'ocdi-main-css', PT_OCDI_URL . 'assets/css/ohio-importer.css', [], PT_OCDI_VERSION );
		}
	}

	public function check_purchase_code_ajax_callback() {
		Helpers::verify_ajax_call();

		$code = $_POST['purchase_code'] ?? '';
		$status = 'none';

		/*
		$req = @file_get_contents( 'https://demo.clbthemes.com/check/' . $code );
		if ( $req === 'OK' ) {
			$status = 'verified';
		}
		*/

		if (strlen($code) > 0) {
			$request  = wp_remote_get( 'https://demo.clbthemes.com/check/' . $code );
			$response = wp_remote_retrieve_body( $request );
			if ( 'OK' === $response ) {
				$status = 'verified';
			}
		}

		wp_send_json( [ 'status' => $status ] );
		die();
	}

	/**
	 * Main AJAX callback function for:
	 * 1). prepare import files (uploaded or predefined via filters)
	 * 2). execute 'before content import' actions (before import WP action)
	 * 3). import content
	 * 4). execute 'after content import' actions (before widget import WP action, widget import, customizer import, after import WP action)
	 */
	public function import_demo_data_ajax_callback() {
	    $dbgtrace = false; // Set true to var_dump stacktrace import process

		$dbgtrace && print('1. Start ajax callback. ');

		// Try to update PHP memory limit (so that it does not run out of it).
		ini_set( 'memory_limit', apply_filters( 'pt-ocdi/import_memory_limit', '350M' ) );

		$dbgtrace && print('2. After ini_set and before verify_ajax_call. ');

		// Verify if the AJAX call is valid (checks nonce and current_user_can).
		Helpers::verify_ajax_call();

		// Is this a new AJAX call to continue the previous import?
		$use_existing_importer_data = $this->use_existing_importer_data();

		if ( ! $use_existing_importer_data ) {

			$dbgtrace && print('3. Preparing import files. ');

			// Create a date and time string to use for demo and log file names.
			Helpers::set_demo_import_start_time();

			// Define log file path.
			$this->log_file_path = Helpers::get_log_path();

			// Get selected file index or set it to 0.
			$this->selected_index = empty( $_POST['selected'] ) ? 0 : absint( $_POST['selected'] );

			/**
			 * 1). Prepare import files.
			 * Manually uploaded import files or predefined import files via filter: pt-ocdi/import_files
			 */
			if ( ! empty( $_FILES ) ) { // Using manual file uploads?
				// Get paths for the uploaded files.
				$this->selected_import_files = Helpers::process_uploaded_files( $_FILES, $this->log_file_path );

				// Set the name of the import files, because we used the uploaded files.
				$this->import_files[ $this->selected_index ]['import_file_name'] = esc_html__( 'Manually uploaded files', 'ohio-importer' );
			}
			elseif ( ! empty( $this->import_files[ $this->selected_index ] ) ) { // Use predefined import files from wp filter: pt-ocdi/import_files.

				$dbgtrace && print('3.1. Download import files. ');

				// Download the import files (content, widgets and customizer files).
				$this->selected_import_files = Helpers::download_import_files( $this->import_files[ $this->selected_index ], $_POST['type'] );

				// Check Errors.
				if ( is_wp_error( $this->selected_import_files ) ) {
					// Write error to log file and send an AJAX response with the error.
					Helpers::log_error_and_send_ajax_response(
						$this->selected_import_files->get_error_message(),
						$this->log_file_path,
						esc_html__( 'Downloaded files', 'ohio-importer' )
					);
				}

				// Add this message to log file.
				$log_added = Helpers::append_to_file(
					sprintf(
						__( 'The import files for: %s were successfully downloaded!', 'ohio-importer' ),
						$this->import_files[ $this->selected_index ]['import_file_name']
					) . Helpers::import_file_info( $this->selected_import_files ),
					$this->log_file_path,
					esc_html__( 'Downloaded files' , 'ohio-importer' )
				);
			}
			else {
				// Send JSON Error response to the AJAX call.
				wp_send_json( esc_html__( 'No import files specified!', 'ohio-importer' ) );
			}
		}

		$dbgtrace && print('4. Before import executed and set transient. ');

		// Save the initial import data as a transient, so other import parts (in new AJAX calls) can use that data.
		Helpers::set_ocdi_import_data_transient( $this->get_current_importer_data() );

		if ( ! $this->before_import_executed ) {
			$this->before_import_executed = true;

			/**
			 * 2). Execute the actions hooked to the 'pt-ocdi/before_content_import_execution' action:
			 *
			 * Default actions:
			 * 1 - Before content import WP action (with priority 10).
			 */
			$dbgtrace && print('5. before_content_import_execution. ');

			do_action( 'pt-ocdi/before_content_import_execution', $this->selected_import_files, $this->import_files, $this->selected_index );
		}

		$dbgtrace && print('6. Import content. ');

		/**
		 * 3). Import content.
		 * Returns any errors greater then the "warning" logger level, that will be displayed on front page.
		 */

//
// ---  NEW CODE HERE
//

		/** WordPress Import Administration API */
		require_once ABSPATH . 'wp-admin/includes/import.php';

		if ( ! class_exists( 'WP_Importer' ) ) {
			$class_wp_importer = ABSPATH . 'wp-admin/includes/class-wp-importer.php';
			if ( file_exists( $class_wp_importer ) ) {
				require $class_wp_importer;
			}
		}

		if ( !class_exists( 'WXR_Parser' ) ) {
			require_once dirname( __FILE__ ) . '/../default_wp_parser/class-wxr-parser.php';
		}
		if ( !class_exists( 'WXR_Parser_SimpleXML' ) ) {
			require_once dirname( __FILE__ ) . '/../default_wp_parser/class-wxr-parser-simplexml.php';
		}
		if ( !class_exists( 'WXR_Parser_XML' ) ) {
			require_once dirname( __FILE__ ) . '/../default_wp_parser/class-wxr-parser-xml.php';
		}
		if ( !class_exists( 'WXR_Parser_Regex' ) ) {
			require_once dirname( __FILE__ ) . '/../default_wp_parser/class-wxr-parser-regex.php';
		}

		// Renamed to Ohio_WP_Import
		require_once dirname( __FILE__ ) . '/../default_wp_parser/class-wp-import.php';

		$post_options = ( $_POST['options'] ) ? json_decode( str_replace( '\\"', '"', $_POST['options'] ), true ) : [];

		$native_parser = new \Ohio_WP_Import([
			'media' => !empty( $post_options['media'] ),
			'posts' => !empty( $post_options['posts'] ),
			'projects' => !empty( $post_options['projects'] ),
			'products' => !empty( $post_options['products'] ),
			'forms' => !empty( $post_options['forms'] )
		]);

		// $this->append_to_frontend_error_messages( $native_parser->import( $this->selected_import_files['content'] ) );
		ob_start();
		$native_parser->import( $this->selected_import_files['content'] );
		error_log( ob_get_clean() );
//
// --- / NEW CODE HERE
//

		// $this->append_to_frontend_error_messages( $this->importer->import_content( $this->selected_import_files['content'] ) );

		// and execute
		//$exc_file = $this->import_files[ $this->selected_index ]['import_execute_file'];
		//if ( $exc_file ) {
		//	$this->frontend_error_messages .= $this->import_exec( $exc_file );
		//}

		/**
		 * 4). Execute the actions hooked to the 'pt-ocdi/after_content_import_execution' action:
		 *
		 * Default actions:
		 * 1 - Before widgets import setup (with priority 10).
		 * 2 - Import widgets (with priority 20).
		 * 3 - Import Redux data (with priority 30).
		 */
		$dbgtrace && print('7. after_content_import_execution. ');

		do_action( 'pt-ocdi/after_content_import_execution', $this->selected_import_files, $this->import_files, $this->selected_index );

		// Save the import data as a transient, so other import parts (in new AJAX calls) can use that data.
		Helpers::set_ocdi_import_data_transient( $this->get_current_importer_data() );

		// Request the customizer import AJAX call.
		if ( ! empty( $this->selected_import_files['customizer'] ) ) {
			wp_send_json( array( 'status' => 'customizerAJAX' ) );
		}

		// Request the after all import AJAX call.
		if ( false !== has_action( 'pt-ocdi/after_all_import_execution' ) ) {
			wp_send_json( array( 'status' => 'afterAllImportAJAX' ) );
		}

		// Send a JSON response with final report.
		$this->final_response();
	}


	public function import_exec( $import_file_path ) {
		// Try to update PHP memory limit (so that it does not run out of it).
		ini_set( 'memory_limit', apply_filters( 'pt-ocdi/import_memory_limit', '350M' ) );

		if ( ! empty( $import_file_path ) ) {
			if ( @file_exists( $import_file_path ) ) {
				include( $import_file_path );
				
				if ( class_exists( '\RevSliderSlider' ) && count( $ocdi_slides_to_revolution ) > 0 ) {
					$absolute_path = __FILE__;
					$path_to_file = explode( 'wp-content', $absolute_path );
					$path_to_wp = $path_to_file[0];

					require_once( $path_to_wp . '/wp-load.php' );
					require_once( $path_to_wp . '/wp-includes/functions.php');
					require_once( $path_to_wp . '/wp-admin/includes/file.php');
					$slider = new \RevSliderSlider();
					foreach($ocdi_slides_to_revolution as $filepath){
						$slider->importSliderFromPost( true, true, $filepath );
					}
				}

				include PT_OCDI_PATH . 'inc/OhioDefaultParams.php';
				global $wpdb;
				foreach (array_merge( $ocdi_fields_static, $ocdi_fields_to_change ) as $field => $value) {
					if ( $wpdb->get_var( 'SELECT COUNT(*) FROM ' . $wpdb->prefix . 'options WHERE option_name = \'' . $field . '\'' ) == 0 ) {
						$wpdb->insert( $wpdb->prefix . 'options', array( 'option_value' => $value, 'option_name' => $field, 'autoload' => 'no' ), array( '%s', '%s', '%s' ) );
					} else {
						$wpdb->update( $wpdb->prefix . 'options', array( 'option_value' => $value ), array( 'option_name' => $field ) );
					}
				}
			}
		}
	}


	/**
	 * AJAX callback for importing the customizer data.
	 * This request has the wp_customize set to 'on', so that the customizer hooks can be called
	 * (they can only be called with the $wp_customize instance). But if the $wp_customize is defined,
	 * then the widgets do not import correctly, that's why the customizer import has its own AJAX call.
	 */
	public function import_customizer_data_ajax_callback() {
		// Verify if the AJAX call is valid (checks nonce and current_user_can).
		Helpers::verify_ajax_call();

		// Get existing import data.
		if ( $this->use_existing_importer_data() ) {
			/**
			 * Execute the customizer import actions.
			 *
			 * Default actions:
			 * 1 - Customizer import (with priority 10).
			 */
			do_action( 'pt-ocdi/customizer_import_execution', $this->selected_import_files );
		}

		// Request the after all import AJAX call.
		if ( false !== has_action( 'pt-ocdi/after_all_import_execution' ) ) {
			wp_send_json( array( 'status' => 'afterAllImportAJAX' ) );
		}

		// Send a JSON response with final report.
		$this->final_response();
	}


	/**
	 * AJAX callback for the after all import action.
	 */
	public function after_all_import_data_ajax_callback() {
		// Verify if the AJAX call is valid (checks nonce and current_user_can).
		Helpers::verify_ajax_call();

		// Get existing import data.
		if ( $this->use_existing_importer_data() ) {
			/**
			 * Execute the after all import actions.
			 *
			 * Default actions:
			 * 1 - after_import action (with priority 10).
			 */
			do_action( 'pt-ocdi/after_all_import_execution', $this->selected_import_files, $this->import_files, $this->selected_index );
		}

		// Send a JSON response with final report.
		$this->final_response();
	}


	/**
	 * Send a JSON response with final report.
	 */
	private function final_response() {
		// Delete importer data transient for current import.
		delete_transient( 'ocdi_importer_data' );

		if (class_exists('OhioOptionsCache')) {
			\OhioOptionsCache::flush();
		}

		// Display final messages (success or error messages).
		//if ( empty( $this->frontend_error_messages ) ) {
			$response['message'] = '';

			$response['message'] .= sprintf(
				__( '%1$s%3$sThat\'s it, all done!%4$s%2$sThe demo import has finished. Please check the demo and make sure that everything has imported correctly.', 'ohio-importer' ),
				'<div class="notice  notice-success"><p>',
				'<br>',
				'<strong>',
				'</strong>',
				'</p></div>'
			);
		/*}
		else {
			$response['message'] = $this->frontend_error_messages_display() . '<br>';
			$response['message'] .= sprintf(
				__( '%1$sThe demo import has finished, but there were some import errors.%2$sMore details about the errors can be found in this %3$s%5$slog file%6$s%4$s%7$s', 'ohio-importer' ),
				'<div class="notice  notice-warning"><p>',
				'<br>',
				'<strong>',
				'</strong>',
				'<a href="' . Helpers::get_log_url( $this->log_file_path ) .'" target="_blank">',
				'</a>',
				'</p></div>'
			);
		}*/

		wp_send_json( $response );
	}


	/**
	 * Get content importer data, so we can continue the import with this new AJAX request.
	 *
	 * @return boolean
	 */
	private function use_existing_importer_data() {
		if ( $data = get_transient( 'ocdi_importer_data' ) ) {
			$this->frontend_error_messages = empty( $data['frontend_error_messages'] ) ? array() : $data['frontend_error_messages'];
			$this->log_file_path           = empty( $data['log_file_path'] ) ? '' : $data['log_file_path'];
			$this->selected_index          = empty( $data['selected_index'] ) ? 0 : $data['selected_index'];
			$this->selected_import_files   = empty( $data['selected_import_files'] ) ? array() : $data['selected_import_files'];
			$this->before_import_executed  = empty( $data['before_import_executed'] ) ? false : $data['before_import_executed'];
			$this->importer->set_importer_data( $data );

			return true;
		}
		return false;
	}


	/**
	 * Get the current state of selected data.
	 *
	 * @return array
	 */
	public function get_current_importer_data() {
		return array(
			'frontend_error_messages' => $this->frontend_error_messages,
			'log_file_path'           => $this->log_file_path,
			'selected_index'          => $this->selected_index,
			'selected_import_files'   => $this->selected_import_files,
			'before_import_executed'  => $this->before_import_executed,
		);
	}


	/**
	 * Getter function to retrieve the private log_file_path value.
	 *
	 * @return string The log_file_path value.
	 */
	public function get_log_file_path() {
		return $this->log_file_path;
	}


	/**
	 * Setter function to append additional value to the private frontend_error_messages value.
	 *
	 * @param string $additional_value The additional value that will be appended to the existing frontend_error_messages.
	 */
	public function append_to_frontend_error_messages( $text ) {
		$lines = array();

		if ( ! empty( $text ) ) {
			$text = str_replace( '<br>', PHP_EOL, $text );
			$lines = explode( PHP_EOL, $text );
		}

		foreach ( $lines as $line ) {
			if ( ! empty( $line ) && ! in_array( $line , $this->frontend_error_messages ) ) {
				$this->frontend_error_messages[] = $line;
			}
		}
	}


	/**
	 * Display the frontend error messages.
	 *
	 * @return string Text with HTML markup.
	 */
	public function frontend_error_messages_display() {
		$output = '';

		if ( ! empty( $this->frontend_error_messages ) ) {
			foreach ( $this->frontend_error_messages as $line ) {
				$output .= esc_html( $line );
				$output .= '<br>';
			}
		}

		return $output;
	}


	/**
	 * Load the plugin textdomain, so that translations can be made.
	 */
	public function load_textdomain() {
		load_plugin_textdomain( 'ohio-importer', false, plugin_basename( dirname( __FILE__ ) ) . '/languages' );
	}


	/**
	 * Get data from filters, after the theme has loaded and instantiate the importer.
	 */
	public function setup_plugin_with_filter_data() {
		// Get info of import data files and filter it.
		$this->import_files = Helpers::validate_import_file_info( apply_filters( 'pt-ocdi/import_files', array() ) );

		/**
		 * Register all default actions (before content import, widget, customizer import and other actions)
		 * to the 'before_content_import_execution' and the 'pt-ocdi/after_content_import_execution' action hook.
		 */
		$import_actions = new ImportActions();
		$import_actions->register_hooks();

		// Importer options array.
		$importer_options = apply_filters( 'pt-ocdi/importer_options', array(
			'fetch_attachments' => true,
		) );

		// Logger options for the logger used in the importer.
		$logger_options = apply_filters( 'pt-ocdi/logger_options', array(
			'logger_min_level' => 'warning',
		) );

		// Configure logger instance and set it to the importer.
		$logger            = new Logger();
		$logger->min_level = $logger_options['logger_min_level'];

		// Create importer instance with proper parameters.
		$this->importer = new Importer( $importer_options, $logger );
	}
}