<?php
/**
 * The frontend GUI class.
 *
 * @since      	1.3
 * @subpackage 	LiteSpeed/src
 * @author     	LiteSpeed Technologies <info@litespeedtech.com>
 */
namespace LiteSpeed;
defined('WPINC') || exit();

class GUI extends Base
{
	private static $_clean_counter = 0;

	private $_promo_true;

	// [ file_tag => [ days, litespeed_only ], ... ]
	private $_promo_list = array(
		'new_version' => array(7, false),
		'score' => array(14, false),
		// 'slack'		=> array( 3, false ),
	);

	const LIB_GUEST_JS = 'assets/js/guest.min.js';
	const LIB_GUEST_DOCREF_JS = 'assets/js/guest.docref.min.js';
	const PHP_GUEST = 'guest.vary.php';

	const TYPE_DISMISS_WHM = 'whm';
	const TYPE_DISMISS_EXPIRESDEFAULT = 'ExpiresDefault';
	const TYPE_DISMISS_PROMO = 'promo';
	const TYPE_DISMISS_PIN = 'pin';

	const WHM_MSG = 'lscwp_whm_install';
	const WHM_MSG_VAL = 'whm_install';

	protected $_summary;

	/**
	 * Instance
	 *
	 * @since  1.3
	 */
	public function __construct()
	{
		$this->_summary = self::get_summary();
	}

	/**
	 * Frontend Init
	 *
	 * @since  3.0
	 */
	public function init()
	{
		Debug2::debug2('[GUI] init');
		if (is_admin_bar_showing() && current_user_can('manage_options')) {
			add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_style'));
			add_action('admin_bar_menu', array($this, 'frontend_shortcut'), 95);
		}

		/**
		 * Turn on instant click
		 * @since  1.8.2
		 */
		if ($this->conf(self::O_UTIL_INSTANT_CLICK)) {
			add_action('wp_enqueue_scripts', array($this, 'frontend_enqueue_style_public'));
		}

		// NOTE: this needs to be before optimizer to avoid wrapper being removed
		add_filter('litespeed_buffer_finalize', array($this, 'finalize'), 8);
	}

	/**
	 * Print a loading message when redirecting CCSS/UCSS page to aviod whiteboard confusion
	 */
	public static function print_loading($counter, $type)
	{
		echo '<div style="font-size: 25px; text-align: center; padding-top: 150px; width: 100%; position: absolute;">';
		echo "<img width='35' src='" . LSWCP_PLUGIN_URL . "assets/img/Litespeed.icon.svg' />   ";
		echo sprintf(__('%1$s %2$s files left in queue', 'litespeed-cache'), $counter, $type);
		echo '<p><a href="' . admin_url('admin.php?page=litespeed-page_optm') . '">' . __('Cancel', 'litespeed-cache') . '</a></p>';
		echo '</div>';
	}

	/**
	 * Display a pie
	 *
	 * @since 1.6.6
	 */
	public static function pie($percent, $width = 50, $finished_tick = false, $without_percentage = false, $append_cls = false)
	{
		$percentage = '<text x="50%" y="50%">' . $percent . ($without_percentage ? '' : '%') . '</text>';

		if ($percent == 100 && $finished_tick) {
			$percentage = '<text x="50%" y="50%" class="litespeed-pie-done">&#x2713</text>';
		}

		return "
		<svg class='litespeed-pie $append_cls' viewbox='0 0 33.83098862 33.83098862' width='$width' height='$width' xmlns='http://www.w3.org/2000/svg'>
			<circle class='litespeed-pie_bg' cx='16.91549431' cy='16.91549431' r='15.91549431' />
			<circle class='litespeed-pie_circle' cx='16.91549431' cy='16.91549431' r='15.91549431' stroke-dasharray='$percent,100' />
			<g class='litespeed-pie_info'>$percentage</g>
		</svg>
		";
	}

	/**
	 * Display a tiny pie with a tooltip
	 *
	 * @since 3.0
	 */
	public static function pie_tiny($percent, $width = 50, $tooltip = '', $tooltip_pos = 'up', $append_cls = false)
	{
		// formula C = 2πR
		$dasharray = 2 * 3.1416 * 9 * ($percent / 100);

		return "
		<button type='button' data-balloon-break data-balloon-pos='$tooltip_pos' aria-label='$tooltip' class='litespeed-btn-pie'>
		<svg class='litespeed-pie litespeed-pie-tiny $append_cls' viewbox='0 0 30 30' width='$width' height='$width' xmlns='http://www.w3.org/2000/svg'>
			<circle class='litespeed-pie_bg' cx='15' cy='15' r='9' />
			<circle class='litespeed-pie_circle' cx='15' cy='15' r='9' stroke-dasharray='$dasharray,100' />
			<g class='litespeed-pie_info'><text x='50%' y='50%'>i</text></g>
		</svg>
		</button>
		";
	}

	/**
	 * Get classname of PageSpeed Score
	 *
	 * Scale:
	 * 	90-100 (fast)
	 * 	50-89 (average)
	 * 	0-49 (slow)
	 *
	 * @since  2.9
	 * @access public
	 */
	public function get_cls_of_pagescore($score)
	{
		if ($score >= 90) {
			return 'success';
		}

		if ($score >= 50) {
			return 'warning';
		}

		return 'danger';
	}

	/**
	 * Dismiss banner
	 *
	 * @since 1.0
	 * @access public
	 */
	public static function dismiss()
	{
		$_instance = self::cls();
		switch (Router::verify_type()) {
			case self::TYPE_DISMISS_WHM:
				self::dismiss_whm();
				break;

			case self::TYPE_DISMISS_EXPIRESDEFAULT:
				self::update_option(Admin_Display::DB_DISMISS_MSG, Admin_Display::RULECONFLICT_DISMISSED);
				break;

			case self::TYPE_DISMISS_PIN:
				admin_display::dismiss_pin();
				break;

			case self::TYPE_DISMISS_PROMO:
				if (empty($_GET['promo_tag'])) {
					break;
				}

				$promo_tag = sanitize_key($_GET['promo_tag']);

				if (empty($_instance->_promo_list[$promo_tag])) {
					break;
				}

				defined('LSCWP_LOG') && Debug2::debug('[GUI] Dismiss promo ' . $promo_tag);

				// Forever dismiss
				if (!empty($_GET['done'])) {
					$_instance->_summary[$promo_tag] = 'done';
				} elseif (!empty($_GET['later'])) {
					// Delay the banner to half year later
					$_instance->_summary[$promo_tag] = time() + 86400 * 180;
				} else {
					// Update welcome banner to 30 days after
					$_instance->_summary[$promo_tag] = time() + 86400 * 30;
				}

				self::save_summary();

				break;

			default:
				break;
		}

		if (Router::is_ajax()) {
			// All dismiss actions are considered as ajax call, so just exit
			exit(json_encode(array('success' => 1)));
		}

		// Plain click link, redirect to referral url
		Admin::redirect();
	}

	/**
	 * Check if has rule conflict notice
	 *
	 * @since 1.1.5
	 * @access public
	 * @return boolean
	 */
	public static function has_msg_ruleconflict()
	{
		$db_dismiss_msg = self::get_option(Admin_Display::DB_DISMISS_MSG);
		if (!$db_dismiss_msg) {
			self::update_option(Admin_Display::DB_DISMISS_MSG, -1);
		}
		return $db_dismiss_msg == Admin_Display::RULECONFLICT_ON;
	}

	/**
	 * Check if has whm notice
	 *
	 * @since 1.1.1
	 * @access public
	 * @return boolean
	 */
	public static function has_whm_msg()
	{
		$val = self::get_option(self::WHM_MSG);
		if (!$val) {
			self::dismiss_whm();
			return false;
		}
		return $val == self::WHM_MSG_VAL;
	}

	/**
	 * Delete whm msg tag
	 *
	 * @since 1.1.1
	 * @access public
	 */
	public static function dismiss_whm()
	{
		self::update_option(self::WHM_MSG, -1);
	}

	/**
	 * Set current page a litespeed page
	 *
	 * @since  2.9
	 */
	private function _is_litespeed_page()
	{
		if (
			!empty($_GET['page']) &&
			in_array($_GET['page'], array(
				'litespeed-settings',
				'litespeed-dash',
				Admin::PAGE_EDIT_HTACCESS,
				'litespeed-optimization',
				'litespeed-crawler',
				'litespeed-import',
				'litespeed-report',
			))
		) {
			return true;
		}

		return false;
	}

	/**
	 * Display promo banner
	 *
	 * @since 2.1
	 * @access public
	 */
	public function show_promo($check_only = false)
	{
		$is_litespeed_page = $this->_is_litespeed_page();

		// Bypass showing info banner if disabled all in debug
		if (defined('LITESPEED_DISABLE_ALL')) {
			if ($is_litespeed_page && !$check_only) {
				include_once LSCWP_DIR . 'tpl/inc/disabled_all.php';
			}

			return false;
		}

		if (file_exists(ABSPATH . '.litespeed_no_banner')) {
			defined('LSCWP_LOG') && Debug2::debug('[GUI] Bypass banners due to silence file');
			return false;
		}

		foreach ($this->_promo_list as $promo_tag => $v) {
			list($delay_days, $litespeed_page_only) = $v;

			if ($litespeed_page_only && !$is_litespeed_page) {
				continue;
			}

			// first time check
			if (empty($this->_summary[$promo_tag])) {
				$this->_summary[$promo_tag] = time() + 86400 * $delay_days;
				self::save_summary();

				continue;
			}

			$promo_timestamp = $this->_summary[$promo_tag];

			// was ticked as done
			if ($promo_timestamp == 'done') {
				continue;
			}

			// Not reach the dateline yet
			if (time() < $promo_timestamp) {
				continue;
			}

			// try to load, if can pass, will set $this->_promo_true = true
			$this->_promo_true = false;
			include LSCWP_DIR . "tpl/banner/$promo_tag.php";

			// If not defined, means it didn't pass the display workflow in tpl.
			if (!$this->_promo_true) {
				continue;
			}

			if ($check_only) {
				return $promo_tag;
			}

			defined('LSCWP_LOG') && Debug2::debug('[GUI] Show promo ' . $promo_tag);

			// Only contain one
			break;
		}

		return false;
	}

	/**
	 * Load frontend public script
	 *
	 * @since  1.8.2
	 * @access public
	 */
	public function frontend_enqueue_style_public()
	{
		wp_enqueue_script(Core::PLUGIN_NAME, LSWCP_PLUGIN_URL . 'assets/js/instant_click.min.js', array(), Core::VER, true);
	}

	/**
	 * Load frontend menu shortcut
	 *
	 * @since  1.3
	 * @access public
	 */
	public function frontend_enqueue_style()
	{
		wp_enqueue_style(Core::PLUGIN_NAME, LSWCP_PLUGIN_URL . 'assets/css/litespeed.css', array(), Core::VER, 'all');
	}

	/**
	 * Load frontend menu shortcut
	 *
	 * @since  1.3
	 * @access public
	 */
	public function frontend_shortcut()
	{
		global $wp_admin_bar;

		$wp_admin_bar->add_menu(array(
			'id' => 'litespeed-menu',
			'title' => '<span class="ab-icon"></span>',
			'href' => get_admin_url(null, 'admin.php?page=litespeed'),
			'meta' => array('tabindex' => 0, 'class' => 'litespeed-top-toolbar'),
		));

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-purge-single',
			'title' => __('Purge this page', 'litespeed-cache') . ' - LSCache',
			'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_FRONT, false, true),
			'meta' => array('tabindex' => '0'),
		));

		if ($this->has_cache_folder('ucss')) {
			$possible_url_tag = UCSS::get_url_tag();
			$append_arr = array();
			if ($possible_url_tag) {
				$append_arr['url_tag'] = $possible_url_tag;
			}

			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-single-ucss',
				'title' => __('Purge this page', 'litespeed-cache') . ' - UCSS',
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_UCSS, false, true, $append_arr),
				'meta' => array('tabindex' => '0'),
			));
		}

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-single-action',
			'title' => __('Mark this page as ', 'litespeed-cache'),
			'meta' => array('tabindex' => '0'),
		));

		if (!empty($_SERVER['REQUEST_URI'])) {
			$append_arr = array(
				Conf::TYPE_SET . '[' . self::O_CACHE_FORCE_URI . '][]' => $_SERVER['REQUEST_URI'] . '$',
				'redirect' => $_SERVER['REQUEST_URI'],
			);
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-single-action',
				'id' => 'litespeed-single-forced_cache',
				'title' => __('Forced cacheable', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_CONF, Conf::TYPE_SET, false, true, $append_arr),
			));

			$append_arr = array(
				Conf::TYPE_SET . '[' . self::O_CACHE_EXC . '][]' => $_SERVER['REQUEST_URI'] . '$',
				'redirect' => $_SERVER['REQUEST_URI'],
			);
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-single-action',
				'id' => 'litespeed-single-noncache',
				'title' => __('Non cacheable', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_CONF, Conf::TYPE_SET, false, true, $append_arr),
			));

			$append_arr = array(
				Conf::TYPE_SET . '[' . self::O_CACHE_PRIV_URI . '][]' => $_SERVER['REQUEST_URI'] . '$',
				'redirect' => $_SERVER['REQUEST_URI'],
			);
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-single-action',
				'id' => 'litespeed-single-private',
				'title' => __('Private cache', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_CONF, Conf::TYPE_SET, false, true, $append_arr),
			));

			$append_arr = array(
				Conf::TYPE_SET . '[' . self::O_OPTM_EXC . '][]' => $_SERVER['REQUEST_URI'] . '$',
				'redirect' => $_SERVER['REQUEST_URI'],
			);
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-single-action',
				'id' => 'litespeed-single-nonoptimize',
				'title' => __('No optimization', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_CONF, Conf::TYPE_SET, false, true, $append_arr),
			));
		}

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-single-action',
			'id' => 'litespeed-single-more',
			'title' => __('More settings', 'litespeed-cache'),
			'href' => get_admin_url(null, 'admin.php?page=litespeed-cache'),
		));

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-purge-all',
			'title' => __('Purge All', 'litespeed-cache'),
			'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL, false, '_ori'),
			'meta' => array('tabindex' => '0'),
		));

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-purge-all-lscache',
			'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('LSCache', 'litespeed-cache'),
			'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_LSCACHE, false, '_ori'),
			'meta' => array('tabindex' => '0'),
		));

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-purge-cssjs',
			'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('CSS/JS Cache', 'litespeed-cache'),
			'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_CSSJS, false, '_ori'),
			'meta' => array('tabindex' => '0'),
		));

		if (defined('LSCWP_OBJECT_CACHE')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-object',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('Object Cache', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_OBJECT, false, '_ori'),
				'meta' => array('tabindex' => '0'),
			));
		}

		if (Router::opcache_enabled()) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-opcache',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('Opcode Cache', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_OPCACHE, false, '_ori'),
				'meta' => array('tabindex' => '0'),
			));
		}

		if ($this->has_cache_folder('ccss')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-ccss',
				'title' => __('Purge All', 'litespeed-cache') . ' - CCSS',
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_CCSS, false, '_ori'),
				'meta' => array('tabindex' => '0'),
			));
		}

		if ($this->has_cache_folder('ucss')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-ucss',
				'title' => __('Purge All', 'litespeed-cache') . ' - UCSS',
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_UCSS, false, '_ori'),
			));
		}

		if ($this->has_cache_folder('localres')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-localres',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('Localized Resources', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_LOCALRES, false, '_ori'),
				'meta' => array('tabindex' => '0'),
			));
		}

		if ($this->has_cache_folder('lqip')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-placeholder',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('LQIP Cache', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_LQIP, false, '_ori'),
				'meta' => array('tabindex' => '0'),
			));
		}

		if ($this->has_cache_folder('avatar')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-avatar',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('Gravatar Cache', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_AVATAR, false, '_ori'),
				'meta' => array('tabindex' => '0'),
			));
		}

		do_action('litespeed_frontend_shortcut');
	}

	/**
	 * Hooked to wp_before_admin_bar_render.
	 * Adds a link to the admin bar so users can quickly purge all.
	 *
	 * @access public
	 * @global WP_Admin_Bar $wp_admin_bar
	 * @since 1.7.2 Moved from admin_display.cls to gui.cls; Renamed from `add_quick_purge` to `backend_shortcut`
	 */
	public function backend_shortcut()
	{
		global $wp_admin_bar;

		// if ( defined( 'LITESPEED_ON' ) ) {
		$wp_admin_bar->add_menu(array(
			'id' => 'litespeed-menu',
			'title' => '<span class="ab-icon" title="' . __('LiteSpeed Cache Purge All', 'litespeed-cache') . ' - ' . __('LSCache', 'litespeed-cache') . '"></span>',
			'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_LSCACHE),
			'meta' => array('tabindex' => 0, 'class' => 'litespeed-top-toolbar'),
		));
		// }
		// else {
		// 	$wp_admin_bar->add_menu( array(
		// 		'id'    => 'litespeed-menu',
		// 		'title' => '<span class="ab-icon" title="' . __( 'LiteSpeed Cache', 'litespeed-cache' ) . '"></span>',
		// 		'meta'  => array( 'tabindex' => 0, 'class' => 'litespeed-top-toolbar' ),
		// 	) );
		// }

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-bar-manage',
			'title' => __('Manage', 'litespeed-cache'),
			'href' => 'admin.php?page=litespeed',
			'meta' => array('tabindex' => '0'),
		));

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-bar-setting',
			'title' => __('Settings', 'litespeed-cache'),
			'href' => 'admin.php?page=litespeed-cache',
			'meta' => array('tabindex' => '0'),
		));

		if (!is_network_admin()) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-bar-imgoptm',
				'title' => __('Image Optimization', 'litespeed-cache'),
				'href' => 'admin.php?page=litespeed-img_optm',
				'meta' => array('tabindex' => '0'),
			));
		}

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-purge-all',
			'title' => __('Purge All', 'litespeed-cache'),
			'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL),
			'meta' => array('tabindex' => '0'),
		));

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-purge-all-lscache',
			'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('LSCache', 'litespeed-cache'),
			'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_LSCACHE),
			'meta' => array('tabindex' => '0'),
		));

		$wp_admin_bar->add_menu(array(
			'parent' => 'litespeed-menu',
			'id' => 'litespeed-purge-cssjs',
			'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('CSS/JS Cache', 'litespeed-cache'),
			'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_CSSJS),
			'meta' => array('tabindex' => '0'),
		));

		if ($this->conf(self::O_CDN_CLOUDFLARE)) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-cloudflare',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('Cloudflare', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_CDN_CLOUDFLARE, CDN\Cloudflare::TYPE_PURGE_ALL),
				'meta' => array('tabindex' => '0'),
			));
		}

		if (defined('LSCWP_OBJECT_CACHE')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-object',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('Object Cache', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_OBJECT),
				'meta' => array('tabindex' => '0'),
			));
		}

		if (Router::opcache_enabled()) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-opcache',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('Opcode Cache', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_OPCACHE),
				'meta' => array('tabindex' => '0'),
			));
		}

		if ($this->has_cache_folder('ccss')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-ccss',
				'title' => __('Purge All', 'litespeed-cache') . ' - CCSS',
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_CCSS),
				'meta' => array('tabindex' => '0'),
			));
		}

		if ($this->has_cache_folder('ucss')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-ucss',
				'title' => __('Purge All', 'litespeed-cache') . ' - UCSS',
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_UCSS),
			));
		}

		if ($this->has_cache_folder('localres')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-localres',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('Localized Resources', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_LOCALRES),
				'meta' => array('tabindex' => '0'),
			));
		}

		if ($this->has_cache_folder('lqip')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-placeholder',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('LQIP Cache', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_LQIP),
				'meta' => array('tabindex' => '0'),
			));
		}

		if ($this->has_cache_folder('avatar')) {
			$wp_admin_bar->add_menu(array(
				'parent' => 'litespeed-menu',
				'id' => 'litespeed-purge-avatar',
				'title' => __('Purge All', 'litespeed-cache') . ' - ' . __('Gravatar Cache', 'litespeed-cache'),
				'href' => Utility::build_url(Router::ACTION_PURGE, Purge::TYPE_PURGE_ALL_AVATAR),
				'meta' => array('tabindex' => '0'),
			));
		}

		do_action('litespeed_backend_shortcut');
	}

	/**
	 * Clear unfinished data
	 *
	 * @since  2.4.2
	 * @access public
	 */
	public static function img_optm_clean_up($unfinished_num)
	{
		return sprintf(
			'<a href="%1$s" class="button litespeed-btn-warning" data-balloon-pos="up" aria-label="%2$s"><span class="dashicons dashicons-editor-removeformatting"></span>&nbsp;%3$s</a>',
			Utility::build_url(Router::ACTION_IMG_OPTM, Img_Optm::TYPE_CLEAN),
			__('Remove all previous unfinished image optimization requests.', 'litespeed-cache'),
			__('Clean Up Unfinished Data', 'litespeed-cache') . ($unfinished_num ? ': ' . Admin_Display::print_plural($unfinished_num, 'image') : '')
		);
	}

	/**
	 * Generate install link
	 *
	 * @since  2.4.2
	 * @access public
	 */
	public static function plugin_install_link($title, $name, $v)
	{
		$url = wp_nonce_url(self_admin_url('update.php?action=install-plugin&plugin=' . $name), 'install-plugin_' . $name);

		$action = sprintf(
			'<a href="%1$s" class="install-now" data-slug="%2$s" data-name="%3$s" aria-label="%4$s">%5$s</a>',
			esc_url($url),
			esc_attr($name),
			esc_attr($title),
			esc_attr(sprintf(__('Install %s', 'litespeed-cache'), $title)),
			__('Install Now', 'litespeed-cache')
		);

		return $action;

		// $msg .= " <a href='$upgrade_link' class='litespeed-btn-success' target='_blank'>" . __( 'Click here to upgrade', 'litespeed-cache' ) . '</a>';
	}

	/**
	 * Generate upgrade link
	 *
	 * @since  2.4.2
	 * @access public
	 */
	public static function plugin_upgrade_link($title, $name, $v)
	{
		$details_url = self_admin_url('plugin-install.php?tab=plugin-information&plugin=' . $name . '&section=changelog&TB_iframe=true&width=600&height=800');
		$file = $name . '/' . $name . '.php';

		$msg = sprintf(
			__('<a href="%1$s" %2$s>View version %3$s details</a> or <a href="%4$s" %5$s target="_blank">update now</a>.', 'litespeed-cache'),
			esc_url($details_url),
			sprintf('class="thickbox open-plugin-details-modal" aria-label="%s"', esc_attr(sprintf(__('View %1$s version %2$s details', 'litespeed-cache'), $title, $v))),
			$v,
			wp_nonce_url(self_admin_url('update.php?action=upgrade-plugin&plugin=') . $file, 'upgrade-plugin_' . $file),
			sprintf('class="update-link" aria-label="%s"', esc_attr(sprintf(__('Update %s now', 'litespeed-cache'), $title)))
		);

		return $msg;
	}

	/**
	 * Finalize buffer by GUI class
	 *
	 * @since  1.6
	 * @access public
	 */
	public function finalize($buffer)
	{
		$buffer = $this->_clean_wrapper($buffer);

		// Maybe restore doc.ref
		if ($this->conf(Base::O_GUEST) && strpos($buffer, '<head>') !== false && defined('LITESPEED_IS_HTML')) {
			$buffer = $this->_enqueue_guest_docref_js($buffer);
		}

		if (defined('LITESPEED_GUEST') && LITESPEED_GUEST && strpos($buffer, '</body>') !== false && defined('LITESPEED_IS_HTML')) {
			$buffer = $this->_enqueue_guest_js($buffer);
		}

		return $buffer;
	}

	/**
	 * Append guest restore doc.ref JS for organic traffic count
	 *
	 * @since  4.4.6
	 */
	private function _enqueue_guest_docref_js($buffer)
	{
		$js_con = File::read(LSCWP_DIR . self::LIB_GUEST_DOCREF_JS);
		$buffer = preg_replace('/<head>/', '<head><script data-no-optimize="1">' . $js_con . '</script>', $buffer, 1);
		return $buffer;
	}

	/**
	 * Append guest JS to update vary
	 *
	 * @since  4.0
	 */
	private function _enqueue_guest_js($buffer)
	{
		$js_con = File::read(LSCWP_DIR . self::LIB_GUEST_JS);
		// $guest_update_url = add_query_arg( 'litespeed_guest', 1, home_url( '/' ) );
		$guest_update_url = parse_url(LSWCP_PLUGIN_URL . self::PHP_GUEST, PHP_URL_PATH);
		$js_con = str_replace('litespeed_url', esc_url($guest_update_url), $js_con);
		$buffer = preg_replace('/<\/body>/', '<script data-no-optimize="1">' . $js_con . '</script></body>', $buffer, 1);
		return $buffer;
	}

	/**
	 * Clean wrapper from buffer
	 *
	 * @since  1.4
	 * @since  1.6 converted to private with adding prefix _
	 * @access private
	 */
	private function _clean_wrapper($buffer)
	{
		if (self::$_clean_counter < 1) {
			Debug2::debug2('GUI bypassed by no counter');
			return $buffer;
		}

		Debug2::debug2('GUI start cleaning counter ' . self::$_clean_counter);

		for ($i = 1; $i <= self::$_clean_counter; $i++) {
			// If miss beginning
			$start = strpos($buffer, self::clean_wrapper_begin($i));
			if ($start === false) {
				$buffer = str_replace(self::clean_wrapper_end($i), '', $buffer);
				Debug2::debug2("GUI lost beginning wrapper $i");
				continue;
			}

			// If miss end
			$end_wrapper = self::clean_wrapper_end($i);
			$end = strpos($buffer, $end_wrapper);
			if ($end === false) {
				$buffer = str_replace(self::clean_wrapper_begin($i), '', $buffer);
				Debug2::debug2("GUI lost ending wrapper $i");
				continue;
			}

			// Now replace wrapped content
			$buffer = substr_replace($buffer, '', $start, $end - $start + strlen($end_wrapper));
			Debug2::debug2("GUI cleaned wrapper $i");
		}

		return $buffer;
	}

	/**
	 * Display a to-be-removed html wrapper
	 *
	 * @since  1.4
	 * @access public
	 */
	public static function clean_wrapper_begin($counter = false)
	{
		if ($counter === false) {
			self::$_clean_counter++;
			$counter = self::$_clean_counter;
			Debug2::debug("GUI clean wrapper $counter begin");
		}
		return '<!-- LiteSpeed To Be Removed begin ' . $counter . ' -->';
	}

	/**
	 * Display a to-be-removed html wrapper
	 *
	 * @since  1.4
	 * @access public
	 */
	public static function clean_wrapper_end($counter = false)
	{
		if ($counter === false) {
			$counter = self::$_clean_counter;
			Debug2::debug("GUI clean wrapper $counter end");
		}
		return '<!-- LiteSpeed To Be Removed end ' . $counter . ' -->';
	}
}