<?php

namespace WP_Table_Builder\Inc\Admin;

use DOMDocument;
use WP_Table_Builder as NS;
use WP_Table_Builder\Inc\Admin\Element_Classes\TableRenderer;
use WP_Table_Builder\Inc\Admin\Managers\Addon_Manager;
use WP_Table_Builder\Inc\Admin\Managers\Frontend_Data_Manager;
use WP_Table_Builder\Inc\Admin\Managers\Settings_Manager;
use WP_Table_Builder\Inc\Common\Factory\Dom_Document_Factory;
use WP_Table_Builder\Inc\Common\Helpers;
use WP_Table_Builder\Inc\Core\Init;
use function add_query_arg;
use function admin_url;
use function apply_filters;
use function get_bloginfo;
use function get_plugins;
use function current_user_can;
use function mb_convert_encoding;
use function wp_create_nonce;
use function wp_localize_script;

/**
 * Register menu elements and do other global tasks.
 *
 * @link       http://wptablebuilder.com/
 * @since      1.0.0
 *
 * @author    Imtiaz Rayhan
 */
class Admin_Menu
{

	/**
	 * Script hook name for generate menu.
	 * @var string
	 */
	public static $generate_menu_script_hook = 'wptb-generate-js';

	/**
	 * Primary class constructor.
	 *
	 * @since 1.0.0
	 */
	public function __construct()
	{
		// Let's make some menus.
		add_filter('set_screen_option_' . 'tables_per_page', function ($status, $option, $value) {
			return (int) $value;
		}, 10, 3);

		add_filter('set-screen-option', function ($status, $option, $value) {
			return ($option == 'tables_per_page') ? (int) $value : $status;
		}, 10, 3);
		add_action('admin_menu', array($this, 'register_menus'), 9);
		add_action('admin_enqueue_scripts', array($this, 'enqueue_scripts'));
		add_action('wp_ajax_create_table', array($this, 'create_table'));
		add_action('wp_ajax_save_table', array($this, 'save_table'));
		add_action('wp_ajax_get_table', array($this, 'get_table'));
		add_action('admin_bar_menu', array($this, 'add_wp_admin_bar_new_table_create_page'), 500);

		add_filter('wp-table-builder/filter/get_table', [$this, 'strip_tags'], 10, 1);
		add_filter('wp-table-builder/filter/table_html_shortcode', [$this, 'strip_tags'], 10, 1);
		add_filter('wp-table-builder/table_content', [$this, 'strip_tags'], 10, 1);
	}

	public function create_table()
	{
		if (current_user_can(Settings_Manager::ALLOWED_ROLE_META_CAP)) {
			$id = wp_insert_post([
				'post_title' => '',
				'post_content' => '',
				'post_type' => 'wptb-tables',
				'post_status' => 'draft'
			]);
			wp_die(json_encode(['created', $id]));
		}
	}

	public function save_table()
	{
		$params = json_decode(file_get_contents('php://input'));

		$verified = current_user_can(Settings_Manager::ALLOWED_ROLE_META_CAP) && wp_verify_nonce($params->security_code, 'wptb-security-nonce');
		$import_verified = wp_verify_nonce($params->security_code, 'wptb-import-security-nonce');

		if (!$verified && !$import_verified) {
			wp_die(json_encode(['security_problem', '']));
		}

		try {
			$params->content = TableRenderer::render(json_decode($params->content, true), $params->id ?? 'startedid-0');
		} catch (\Exception $e) {
			wp_die(json_encode(['error', $e->getMessage()]));
		}

		if (!property_exists($params, 'id') || !absint($params->id) || get_post_status(absint($params->id)) != 'draft') {
			$id = $this->insert_table_to_db($params);
			wp_die(json_encode(['saved', $id]));
		}

		if (Init::instance()->settings_manager->current_user_allowed_for_modifications(absint($params->id))) {
			$this->update_table_in_db($params);

			if (isset($params->preview_saving) && !empty((int) $params->preview_saving)) {
				wp_die(json_encode(['preview_edited']));
			} else {
				wp_die(json_encode(['edited', absint($params->id)]));
			}
		}
	}

	public function insert_table_to_db($params)
	{
		$id = wp_insert_post([
			'post_title' => sanitize_text_field($params->title),
			'post_content' => '',
			'post_type' => 'wptb-tables',
			'post_status' => 'draft'
		]);

		$table_content = $this->add_table_id_to_dom($params->content, $id);

		// apply table content filter
		$table_content = apply_filters('wp-table-builder/table_content', $table_content, $params);
		add_post_meta($id, '_wptb_content_', $table_content);

		// new table id filter hook
		$id = apply_filters('wp-table-builder/new_table_id', $id, $params);

		// new table saved action hook
		do_action('wp-table-builder/new_table_saved', $id, $params);

		return $id;
	}

	public function update_table_in_db($params)
	{
		wp_update_post([
			'ID' => absint($params->id),
			'post_title' => sanitize_text_field($params->title),
			'post_content' => '',
			'post_type' => 'wptb-tables',
			'post_status' => 'draft'
		]);

		if (isset($params->preview_saving) && !empty((int) $params->preview_saving)) {
			update_post_meta(absint($params->id), '_wptb_preview_id_', $params->preview_saving);
			update_post_meta(absint($params->id), '_wptb_content_preview_', $params->content);
		} else {
			// apply table content filter
			$table_content = apply_filters('wp-table-builder/table_content', $params->content, $params);
			update_post_meta(absint($params->id), '_wptb_content_', $table_content);

			// table edited action hook
			do_action('wp-table-builder/table_edited', $params->id, $params);
		}
	}

	/**
	 * Add necessary data to table content for getting its id from HTML element properties and classes.
	 *
	 * @param string $table_content content of table
	 * @param string $id table id
	 *
	 * @return string final table content
	 */
	public function add_table_id_to_dom($table_content, $id)
	{
		$final_table_content = $table_content;

		// ext-mbstring check
		if (function_exists('mb_convert_encoding')) {
			$dom_handler = new DOMDocument();

			$charset = get_bloginfo('charset');

			// need to provide a to_encoding value for mb_convert_encoding since that value is nullable only for PHP 8.0+
			$handler_status = @$dom_handler->loadHTML(mb_convert_encoding($table_content, 'HTML-ENTITIES', $charset), LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD | LIBXML_NOWARNING | LIBXML_NOERROR);

			// check dom handler load status
			if ($handler_status) {
				$table = $dom_handler->getElementsByTagName('table');
				if ($table->length !== 0) {
					$table_element = $table->item(0);
					$class_list = $table_element->getAttribute('class');

					if (strpos($class_list, 'wptb-element-main-table_setting-startedid-0') !== false) {
						$updated_class_list = str_replace('wptb-element-main-table_setting-startedid-0', "wptb-element-main-table_setting-{$id}", $class_list);
						$table_element->setAttribute('class', $updated_class_list);

						$final_table_content = $dom_handler->saveHTML();
					}
				}
			}
		}

		return $final_table_content;
	}

	public function get_table()
	{
		if (current_user_can(Settings_Manager::ALLOWED_ROLE_META_CAP) && Init::instance()->settings_manager->current_user_allowed_for_modifications($_REQUEST['id'])) {
			$post = get_post(absint($_REQUEST['id']));

			$table_html = get_post_meta(absint($_REQUEST['id']), '_wptb_content_', true);
			$table_html = apply_filters('wp-table-builder/filter/get_table', $table_html);

			$name = $post->post_title;
			die(json_encode([$name, $table_html]));
		}
	}

	/**
	 * Strip unwanted tags from table HTML.
	 *
	 * @param string $table_html table html
	 *
	 * @return string $table_html
	 */
	public function strip_tags($table_html)
	{
		$no_no_no_list = ['script'];

		$dom_handler = Dom_Document_Factory::make($table_html);
		if (!is_null($dom_handler)) {
			$remove_list = [];

			foreach ($no_no_no_list as $tag) {
				$target_tags = iterator_to_array($dom_handler->getElementsByTagName($tag));

				if (!empty($target_tags)) {
					$remove_list = array_merge($remove_list, $target_tags);
				}
			}

			if (!empty($remove_list)) {
				foreach ($remove_list as $index => $remove_tag) {
					$remove_tag->parentNode->removeChild($remove_tag);
				}
				$table_html = $dom_handler->saveHTML();
			}
		}

		return $table_html;
	}

	/**
	 * Add "WPTB Add New" sub menu to "New" dropdown menu in the WP Admin Bar.
	 *
	 * @param WP_Admin_Bar $wp_admin_bar object.
	 *
	 * @since 1.1.5
	 *
	 */
	public function add_wp_admin_bar_new_table_create_page($wp_admin_bar)
	{
		if (current_user_can('manage_options')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'new-content',
				'id' => 'wptb-add-new',
				'title' => __('Table', 'wp-table-builder'),
				'href' => esc_url(admin_url('admin.php?page=wptb-builder')),
			));
		}
	}


	/**
	 * Register our menus.
	 *
	 * @since 1.0.0
	 */
	public function register_menus()
	{

		global $builder_page, $tables_overview, $table_list, $builder_tool_page;
		$menu_cap = Helpers::wptb_get_capability_manage_options();

		// Default Tables top level menu item.
		$tables_overview = add_menu_page(
			esc_html__('WP Table Builder', 'wp-table-builder'),
			esc_html__('WP Table Builder', 'wp-table-builder'),
			$menu_cap,
			'wptb-overview',
			array($this, 'tables_list'),
			'dashicons-editor-table',
			apply_filters('wptb_menu_position', '50')
		);

		// Add Welcome sub menu item.
		$builder_page = add_submenu_page(
			'',
			esc_html__('Table Builder', 'wp-table-builder'),
			esc_html__('Welcome Page', 'wp-table-builder'),
			$menu_cap,
			'wp-table-builder-welcome',
			array($this, 'welcome')
		);

		// All Tables sub menu item.
		$table_list = add_submenu_page(
			'wptb-overview',
			esc_html__('WP Table Builder', 'wp-table-builder'),
			esc_html__('All Tables', 'wp-table-builder'),
			$menu_cap,
			'wptb-overview',
			array($this, 'tables_list')
		);

		// Add New Table sub menu item.
		$builder_tool_page = add_submenu_page(
			'wptb-overview',
			esc_html__('WP Table Builder', 'wp-table-builder'),
			esc_html__('Add New', 'wp-table-builder'),
			$menu_cap,
			'wptb-builder',
			array($this, 'table_builder')
		);

		$builder_page = $builder_tool_page;

		// Add Import sub menu item.
		$builder_page = add_submenu_page(
			'wptb-overview',
			esc_html__('Table Builder', 'wp-table-builder'),
			esc_html__('Import/Export', 'wp-table-builder'),
			$menu_cap,
			'wptb-import',
			array($this, 'import')
		);

		add_action('load-' . $builder_page, [$this, 'load_assets']);

		// @deprecated
		//		add_action( 'load-' . $tables_overview, function () {
		//			add_screen_option( 'per_page', array(
		//				'label'   => 'Number of items per page:',
		//				'default' => 15,
		//				'option'  => 'tables_per_page', // название опции, будет записано в метаполе юзера
		//			) );
		//		} );

		do_action('wptb_admin_menu', $this);
	}


	/**
	 * Load assets
	 *
	 * @since 1.1.5
	 */
	public function load_assets()
	{

		add_action('in_admin_header', [$this, 'remove_admin_notices']);
	}

	/**
	 * Remove all kinds of admin notices
	 *
	 * @since 1.1.5
	 */
	public function remove_admin_notices()
	{

		remove_all_actions('network_admin_notices');
		remove_all_actions('user_admin_notices');
		remove_all_actions('admin_notices');
		remove_all_actions('all_admin_notices');
	}

	public function enqueue_scripts($hook)
	{
		/*
		 * This function is provided for demonstration purposes only.
		 *
		 * An instance of this class should be passed to the run() function
		 * defined in Loader as all of the hooks are defined
		 * in that particular class.
		 *
		 * The Loader will then create the relationship
		 * between the defined hooks and the functions defined in this
		 * class.
		 */
		global $builder_page, $tables_overview, $table_list;

		wp_enqueue_media();

		if ($hook != ($builder_page || $table_list || $hook != $tables_overview)) {
			return;
		}


		if (isset($_GET['page']) && sanitize_text_field($_GET['page']) == 'wp-table-builder-welcome') {

			//wp_enqueue_script( 'wptb-admin-welcome-js', plugin_dir_url( __FILE__ ) . 'js/admin-welcome.js', array( 'jquery' ), NS\PLUGIN_VERSION, true );
			wp_enqueue_style('wptb-admin-welcome-css', plugin_dir_url(__FILE__) . 'css/admin-welcome.css', array(), NS\PLUGIN_VERSION, 'all');
		} elseif (isset($_GET['page']) && sanitize_text_field($_GET['page']) == 'wptb-builder') {

			// builder controls
			$builder_path = plugin_dir_path(__FILE__) . 'js/WPTB_BuilderControls.js';

			wp_enqueue_script('wptb-controls-manager-js', plugin_dir_url(__FILE__) . 'js/WPTB_BuilderControls.js', [], filemtime($builder_path), false);

			$strings = [
				'dirtyConfirmation' => esc_html__('You have unsaved changes, leave?', 'wp-table-builder'),
				'embedMessage' => esc_html__('To embed this table on your site, please paste the following shortcode inside a post or page.', 'wp-table-builder'),
				'copyToClipboard' => esc_html__('copy to clipboard', 'wp-table-builder'),
				'copied' => esc_html__('copied', 'wp-table-builder'),
			];

			$table_id = isset($_GET['table']) ? $_GET['table'] : null;

			$admin_object = [
				'ajaxurl' => admin_url('admin-ajax.php'),
				'security_code' => wp_create_nonce('wptb-security-nonce'),
				'strings' => $strings,
				'store' => [
					'tableId' => $table_id,
					'pro' => Addon_Manager::check_pro_status(),
				]
			];

			$admin_translations = [
				'dirtyConfirmation' => esc_html__('You have unsaved changes, leave?', 'wp-table-builder'),
				'embedMessage' => esc_html__('To embed this table on your site, please paste the following shortcode inside a post or page.', 'wp-table-builder'),
				'copyToClipboard' => esc_html__('copy to clipboard', 'wp-table-builder'),
				'copied' => esc_html__('copied', 'wp-table-builder'),
				'shortcode' => esc_html__('shortcode', 'wp-table-builder'),
			];

			// add translations to builder menu data
			Frontend_Data_Manager::add_builder_translations($admin_translations);

			Frontend_Data_Manager::localize_builder_data('wptb-controls-manager-js', $admin_object);

			// generate controls
			$generate_path = plugin_dir_path(__FILE__) . 'js/WPTB_Generate.js';


			// development version to bypass cache issues
			$admin_script_dev_version = filemtime(plugin_dir_path(__FILE__) . 'js/admin.js');

			Helpers::enqueue_file('inc/admin/js/admin.js', [
				'jquery',
				'wptb-admin-builder-tinymce-js',
				'wp-color-picker'

			], true, 'wptb-admin-builder-js', true);

			wp_register_script('wptb-admin-builder-tinymce-js', plugin_dir_url(__FILE__) . 'js/tinymce/tinymce.min.js', array(), NS\PLUGIN_VERSION, false);

			wp_register_script('wptb-admin-builder-tinymce-jquery-js', plugin_dir_url(__FILE__) . 'js/tinymce/jquery.tinymce.min.js', array(), NS\PLUGIN_VERSION, false);

			wp_register_script('wptb-admin-builder-purify', plugin_dir_url(__FILE__) . 'js/purify.min.js', array(), NS\PLUGIN_VERSION, false);

			wp_enqueue_style('wp-color-picker');

			Helpers::enqueue_file('inc/admin/css/admin.css', [], false, 'wptb-builder-css');

			wp_enqueue_script('wptb-admin-builder-tinymce-js');
			wp_enqueue_script('wptb-admin-builder-tinymce-jquery-js');
			wp_enqueue_script('wptb-admin-builder-js');
			wp_enqueue_script('wptb-admin-builder-purify');
			if (!isset($_GET['table'])) { // enqueue file with the same handler name as pro version and with a low priority to load pro version is it is enabled instead of normal version
				wp_enqueue_script(static::$generate_menu_script_hook, plugin_dir_url(__FILE__) . 'js/WPTB_Generate.js', [], filemtime($generate_path), true);
				$generate_data = [
					'mountId' => 'wptbGenerate',
					'version' => 'normal',
					'adLink' => add_query_arg([
						'slug' => 'wp-table-builder-pro',
						'page' => 'wptb-overview-addons'
					], admin_url('admin.php')),
					'security' => null,
					'prebuiltTables' => null,
					'strings' => [
						'blank' => esc_html__('blank', 'wp-table-builder'),
						'generate' => esc_html__('generate', 'wp-table-builder'),
						'edit' => esc_html__('edit', 'wp-table-builder'),
						'searchPlaceholder' => esc_html__('Search (/ to focus)', 'wp-table-builder'),
						'prebuiltAdPart1' => esc_html__('For prebuilt tables and much more', 'wp-table-builder'),
						'prebuiltAdPart2' => esc_html__('Go PRO', 'wp-table-builder'),
						'deleteConfirmation' => esc_html__('Delete prebuilt table?', 'wp-table-builder'),
					]
				];

				// generate data filter
				$generate_data = apply_filters('wp-table-builder/filter/generate_data', $generate_data);

				wp_localize_script(static::$generate_menu_script_hook, 'wptbGenerateMenuData', $generate_data);
			}

			// development version to bypass cache issues
			$admin_script_dev_version = filemtime(plugin_dir_path(__FILE__) . 'js/admin.js');

			wp_register_script('wptb-admin-builder-js', plugin_dir_url(__FILE__) . 'js/admin.js', array(
				'jquery',
				'wptb-admin-builder-tinymce-js',
				'wp-color-picker'
			), NS\PLUGIN_VERSION, true);

			wp_register_script('wptb-admin-builder-tinymce-js', plugin_dir_url(__FILE__) . 'js/tinymce/tinymce.min.js', array(), NS\PLUGIN_VERSION, false);

			wp_register_script('wptb-admin-builder-tinymce-jquery-js', plugin_dir_url(__FILE__) . 'js/tinymce/jquery.tinymce.min.js', array(), NS\PLUGIN_VERSION, false);

			wp_enqueue_style('wp-color-picker');

			wp_enqueue_style('wptb-builder-css', plugin_dir_url(__FILE__) . 'css/admin.css', array(), NS\PLUGIN_VERSION, 'all');
			wp_enqueue_script('wptb-admin-builder-tinymce-js');
			wp_enqueue_script('wptb-admin-builder-tinymce-jquery-js');
			wp_enqueue_script('wptb-admin-builder-js');
		} elseif (isset($_GET['page']) && sanitize_text_field($_GET['page']) == 'wptb-overview') {

			Helpers::enqueue_file('inc/admin/js/wptb-overview.js', [], true, 'wptb-overview-js');
			Helpers::enqueue_file('inc/admin/css/admin-common.css', [], true, 'wptb-admin-common-css');
			Helpers::enqueue_file('inc/admin/css/wptb-overview.css');
		} else if (isset($_GET['page']) && sanitize_text_field($_GET['page']) == 'wptb-import') {

			$script_url = NS\WP_TABLE_BUILDER_URL . 'inc/admin/js/WPTB_Import_Menu.js';
			$script_path = NS\WP_TABLE_BUILDER_DIR . 'inc/admin/js/WPTB_Import_Menu.js';

			$style_url = NS\WP_TABLE_BUILDER_URL . 'inc/admin/css/admin.css';

			$handler = 'wptb-import-menu';
			$plugin_version = NS\PLUGIN_VERSION;

			// script and style enqueue
			wp_enqueue_script($handler, $script_url, [], $plugin_version, true);
			wp_register_script('wptb-admin-builder-js', plugin_dir_url(__FILE__) . 'js/admin.js', array('jquery'), $plugin_version, true);
			wp_enqueue_script('wptb-admin-builder-js');
			wp_enqueue_style('wptb-settings-manager-style', $style_url, [], $plugin_version);

			$plugin_homepage = get_plugin_data(NS\PLUGIN__FILE__)['PluginURI'];
			$plugin_name = get_plugin_data(NS\PLUGIN__FILE__)['Name'];

			$plugin_info = [
				'pluginHomepage' => esc_attr($plugin_homepage),
				'pluginName' => esc_html($plugin_name),
				'logo' => esc_attr(NS\WP_TABLE_BUILDER_URL . 'assets/images/wptb-logo.png'),
				'plainArrow' => esc_attr(NS\WP_TABLE_BUILDER_URL . 'assets/images/plain_arrow.svg'),
			];

			$strings = [
				'logoAlt' => esc_attr__('WPTB plugin logo', 'wp-table-builder'),
				'importSection' => esc_html__('Import', 'wp-table-builder'),
				'exportSection' => esc_html__('Export', 'wp-table-builder'),
				'plugins' => esc_html__('Plugins', 'wp-table-builder'),
				'tableResponsive' => esc_html__('Make Table Responsive', 'wp-table-builder'),
				'topRowHeader' => esc_html__('Top Row as Header', 'wp-table-builder'),
				'csvDelimiter' => esc_html__('CSV Delimiter', 'wp-table-builder'),
				'preserveTitles' => esc_html__('Preserve table titles', 'wp-table-builder'),
				'fileDropHint' => esc_html__('Drag and Drop Files', 'wp-table-builder'),
				'browse' => esc_html__('Browse', 'wp-table-builder'),
				'clear' => esc_html__('Clear', 'wp-table-builder'),
				'tableImported' => esc_html__('Table Imported', 'wp-table-builder'),
				'errorOccurred' => esc_html__('An Error Occurred', 'wp-table-builder'),
				'operationSuccess' => esc_html__('Tables Imported', 'wp-table-builder'),
				'replacedShortcodes' => esc_html__('Shortcodes Replaced', 'wp-table-builder'),
				'file' => esc_html__('file', 'wp-table-builder'),
				'search' => esc_html__('search', 'wp-table-builder'),
			];

			$import_iframe_url = add_query_arg(
				array(
					'post_type' => 'wptb-tables-import'
				),
				home_url()
			);

			// these are the supported plugins for export
			$supported_export_plugins = ['TablePress'];

			$installed_plugins_array = get_plugins();

			// this is a list of plugins that are already installed and supported in export
			$installed_supported_plugin_names = [];

			foreach ($installed_plugins_array as $key => $value) {
				$plugin_name = $value['Name'];
				if (in_array($plugin_name, $supported_export_plugins)) {
					$installed_supported_plugin_names[] = $plugin_name;
				}
			}

			$options = [
				'security_code' => wp_create_nonce('wptb-import-security-nonce'),
				'ajaxUrl' => admin_url('admin-ajax.php'),
				'import_iframe_url' => $import_iframe_url,
				'textDomain' => 'wp-table-builder',
				'fetchNonce' => Export::get_instance()->generate_nonce('fetch'),
				'fetchAjaxAction' => Export::EXPORT_FETCH_TABLES,
				'exportNonce' => Export::get_instance()->generate_nonce('export'),
				'exportAjaxAction' => Export::EXPORT_TABLES,
				'installedSupportedPlugins' => $installed_supported_plugin_names
			];

			$data = [
				'pluginInfo' => $plugin_info,
				'strings' => $strings,
				'options' => $options,
			];

			wp_localize_script($handler, 'wptbImportMenuData', $data);
		}
	}

	/**
	 * Wrapper for the hook to render our tables list.
	 *
	 * @since 1.0.0
	 */
	public function tables_list()
	{
		$table_list = new WPTB_Listing();
		?>
		<div class="wrap">
			<div style="margin-bottom: 30px;">
				<h1 class="wp-heading-inline">
					<?php esc_html_e('All Tables', 'wp-table-builder'); ?>
				</h1>
				<span class="wptb-split-page-title-action">
					<a href="<?php echo esc_url(admin_url('admin.php?page=wptb-builder')); ?>" class="page-title-action">
						<?php esc_html_e('Add New', 'wp-table-builder'); ?>
					</a>
				</span>
			</div>
			<?php
			$table_list->prepare_items();
			$table_list->views();
			?>
			<form method="get">
				<input type="hidden" name="page" value="<?php esc_attr_e($_REQUEST['page']); ?>" />
				<?php
				$table_list->search_box('Search Tables', 'search_tables');
				$table_list->display(); ?>
			</form>
		</div>
		<?php
	}

	/**
	 * Wrapper for the hook to render our tables builder.
	 *
	 * @since 1.0.0
	 */
	public function table_builder()
	{
		require_once NS\WP_TABLE_BUILDER_DIR . 'inc/admin/views/wptb-builder-ui.php';
	}

	/**
	 * Wrapper for the hook to render our plugin table import page.
	 *
	 * @since 1.1.5
	 */
	public function import()
	{
		require_once NS\WP_TABLE_BUILDER_DIR . 'inc/admin/views/wptb-import.php';
	}

	/**
	 * Wrapper for the hook to render our plugin welcome page.
	 *
	 * @since 1.1.5
	 */
	public function welcome()
	{
		require_once NS\WP_TABLE_BUILDER_DIR . 'inc/admin/views/wptb-welcome.php';
	}
}