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: / home / dh_urepzd / techivalue.com / wp-content / plugins / link-whisper / core / Wpil /
Filename : Base.php
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<?php

/**
 * Base controller
 */
class Wpil_Base
{
    public static $report_menu;
    public static $action_tracker = array();

    /**
     * Register services
     */
    public function register()
    {
        add_action('admin_init', [$this, 'init']);
        add_action('admin_menu', [$this, 'addMenu']);
        add_action('add_meta_boxes', [$this, 'addMetaBoxes']);
        add_action('admin_enqueue_scripts', [$this, 'addScripts']);
        add_action('plugin_action_links_' . WPIL_PLUGIN_NAME, [$this, 'showSettingsLink']);
        add_action('admin_notices', [$this, 'addEmailSignupNotice'], 7);
        add_action('admin_notices', [$this, 'add_notice_for_review'], 20);
        add_action('upgrader_process_complete', [$this, 'upgrade_complete'], 10, 2);
        add_action('wp_ajax_dismiss_email_offer_notice', [$this, 'ajax_dismiss_email_offer_notice']);
        add_action('wp_ajax_signed_up_email_offer_notice', [$this, 'ajax_signed_up_email_offer_notice']);
        add_action('wp_ajax_dismiss_premium_notice', [$this, 'ajax_dismiss_premium_notice']);
        add_action('wp_ajax_dismiss_review_notice', [$this, 'ajax_dismiss_review_notice']);
        add_action('wp_ajax_perm_dismiss_review_notice', [$this, 'ajax_perm_dismiss_review_notice']);
        add_action('wp_ajax_get_post_suggestions', ['Wpil_Suggestion','ajax_get_post_suggestions']);
        add_action('wp_ajax_update_suggestion_display', ['Wpil_Suggestion','ajax_update_suggestion_display']);
        add_action('wp_ajax_wpil_csv_export', ['Wpil_Export','ajax_csv']);
        add_action('wp_ajax_wpil_hide_explain_page', array(__CLASS__, 'ajax_hide_explain_page'));
        foreach(Wpil_Settings::getPostTypes() as $post_type){
            add_filter( "manage_{$post_type}_posts_columns", array(__CLASS__, 'add_columns'), 11 );
            add_action( "manage_{$post_type}_posts_custom_column", array(__CLASS__, 'columns_contents'), 11, 2);
        }
    }

    /**
     * Initial function
     */
    function init()
    {
        $capability = apply_filters('wpil_filter_main_permission_check', 'manage_categories', self::get_current_page());
        if (!current_user_can($capability)) {
            return;
        }

        // TODO: if we ever begin offering report exporting, uncomment this to remove security notices.
        /*
        $clear_exports = get_transient('wpil_clear_exports_folder');
        if(!empty($clear_exports) && time() > (int)$clear_exports){
            Wpil_Export::clear_exports();
            delete_transient('wpil_clear_exports_folder');
        }*/

        $post = self::getPost();

        if (!empty($_GET['csv_export'])) {
            Wpil_Export::csv();
        }

        if (!empty($_GET['area'])) {
            switch ($_GET['area']) {
                case 'wpil_export':
                    Wpil_Export::getInstance()->export($post);
                    break;
                case 'wpil_excel_export':
                    $post = self::getPost();
                    if (!empty($post)) {
                        try {
                            Wpil_Excel::exportPost($post);
                        } catch (Throwable $t) {
                        } catch (Exception $e) {
                        }
                    }
                    break;
            }
        }

        if (!empty($_POST['hidden_action'])) {
            switch ($_POST['hidden_action']) {
                case 'wpil_save_settings':
                    Wpil_Settings::save();
                    break;
            }
        }

        //add screen options
        add_action("load-" . self::$report_menu, function () {
            add_screen_option( 'report_options', array(
                'option' => 'report_options',
            ) );
        });
    }

    /**
     * This function is used for adding menu and submenus
     *
     *
     * @return  void
     */
    public function addMenu()
    {
        $capability = apply_filters('wpil_filter_main_permission_check', 'manage_categories', self::get_current_page());
        if (!current_user_can($capability)) {
            return;
        }

        add_menu_page(
            'Link Whisper',
            'Link Whisper',
            'edit_posts',
            'link_whisper',
            [Wpil_Report::class, 'init'],
            plugin_dir_url(__DIR__). '../images/lw-icon-16x16.png'
        );

        self::$report_menu = add_submenu_page(
            'link_whisper',
            'Internal Links Report',
            'Report',
            'edit_posts',
            'link_whisper',
            [Wpil_Report::class, 'init']
        );

        add_submenu_page(
            'link_whisper',
            'Settings',
            'Settings',
            'manage_categories',
            'link_whisper_settings',
            [Wpil_Settings::class, 'init']
        );

        add_submenu_page(
            'link_whisper',
            'Premium',
            '<a class="link-whisper-get-premium-link" href="' . WPIL_STORE_URL . '" target="blank">Get Premium <span style="font-size: 16px; margin: 2px 0 -2px 0;" class="dashicons dashicons-admin-links"></span></a>',
            'manage_categories',
            WPIL_STORE_URL
        );
    }

    /**
     * Get post or term by ID from GET or POST request
     *
     * @return Wpil_Model_Post|null
     */
    public static function getPost()
    {
        if (!empty($_REQUEST['term_id'])) {
            $post = new Wpil_Model_Post((int)$_REQUEST['term_id'], 'term');
        } elseif (!empty($_REQUEST['post_id'])) {
            $post = new Wpil_Model_Post((int)$_REQUEST['post_id']);
        } else {
            $post = null;
        }

        return $post;
    }

    /**
     * Show plugin version
     *
     * @return string
     */
    public static function showVersion()
    {
        $plugin_data = get_plugin_data(WP_INTERNAL_LINKING_PLUGIN_DIR . 'link-whisper.php');

        return "<p style='float: right'>version <b>".esc_html($plugin_data['Version'])."</b></p>";
    }

    /**
     * Show extended error message
     *
     * @param $errno
     * @param $errstr
     * @param $error_file
     * @param $error_line
     */
    public static function handleError($errno, $errstr, $error_file, $error_line)
    {
        if (stristr($errstr, "WordPress could not establish a secure connection to WordPress.org")) {
            return;
        }

        $file = 'n/a';
        $func = 'n/a';
        $line = 'n/a';
        $debugTrace = debug_backtrace();
        if (isset($debugTrace[1])) {
            $file = isset($debugTrace[1]['file']) ? $debugTrace[1]['file'] : 'n/a';
            $line = isset($debugTrace[1]['line']) ? $debugTrace[1]['line'] : 'n/a';
        }
        if (isset($debugTrace[2])) {
            $func = $debugTrace[2]['function'] ? $debugTrace[2]['function'] : 'n/a';
        }

        $out = "call from <b>$file</b>, $func, $line";

        $trace = '';
        $bt = debug_backtrace();
        $sp = 0;
        foreach($bt as $k=>$v) {
            extract($v);

            $args = '';
            if (isset($v['args'])) {
                $args2 = array();
                foreach($v['args'] as $k => $v) {
                    if (!is_scalar($v)) {
                        $args2[$k] = "Array";
                    }
                    else {
                        $args2[$k] = $v;
                    }
                }
                $args = implode(", ", $args2);
            }

            $file = substr($file,1+strrpos($file,"/"));
            $trace .= str_repeat("&nbsp;",++$sp);
            $trace .= "file=<b>$file</b>, line=$line,
									function=$function(".
                var_export($args, true).")<br>";
        }

        $out .= $trace;

        echo "<b>Error:</b> [$errno] $errstr - $error_file:$error_line<br><br><hr><br><br>$out";
    }

    /**
     * Add meta box to the post edit page
     */
    public static function addMetaBoxes()
    {
        $capability = apply_filters('wpil_filter_main_permission_check', 'manage_categories', self::get_current_page());
        if (!current_user_can($capability)) {
            return;
        }

        add_meta_box('wpil_link-articles', 'Link Whisper Suggested Links', array(__CLASS__, 'showSuggestionsBox'), Wpil_Settings::getPostTypes());
    }

    /**
     * Show meta box on the post edit page
     */
    public static function showSuggestionsBox()
    {
        $post_id = isset($_REQUEST['post']) ? (int)$_REQUEST['post'] : '';
        $user = wp_get_current_user();
        if ($post_id) {
            // clear any old links that may still be hiding in the meta
            delete_post_meta($post_id, 'wpil_links');
            include WP_INTERNAL_LINKING_PLUGIN_DIR . '/templates/link_list_v2.php';
        }else{
            include WP_INTERNAL_LINKING_PLUGIN_DIR . '/templates/link_list_please_save_post.php';
        }
    }

    /**
     * Add scripts to the admin panel
     *
     * @param $hook
     */
    public static function addScripts($hook)
    {
        $current_screen = null;
        if(function_exists('get_current_screen')){
            $current_screen = get_current_screen();
        }

        if (strpos($_SERVER['REQUEST_URI'], '/post.php') !== false || strpos($_SERVER['REQUEST_URI'], '/term.php') !== false || (!empty($_GET['page']) && $_GET['page'] == 'link_whisper')) {
            if(function_exists('wp_enqueue_editor')){
                wp_enqueue_editor();
            }
        }

        wp_register_script('wpil_helper', WP_INTERNAL_LINKING_PLUGIN_URL . 'js/wpil_helper.js', array(), filemtime(WP_INTERNAL_LINKING_PLUGIN_DIR . '/js/wpil_helper.js'), true);

        wp_register_script('wpil_base64', WP_INTERNAL_LINKING_PLUGIN_URL . 'js/base64.js', array(), false, true);
        wp_enqueue_script('wpil_base64');

        wp_register_script('wpil_sweetalert_script_min', WP_INTERNAL_LINKING_PLUGIN_URL . 'js/sweetalert.min.js', array('jquery'), $ver=false, true);
        wp_enqueue_script('wpil_sweetalert_script_min');

        $js_path = 'js/wpil_admin.js';
        $f_path = WP_INTERNAL_LINKING_PLUGIN_DIR.$js_path;
        $ver = filemtime($f_path);
        $current_screen = get_current_screen();

        wp_register_script('wpil_admin_script', WP_INTERNAL_LINKING_PLUGIN_URL.$js_path, array('jquery', 'wpil_helper'), $ver, true);
        wp_enqueue_script('wpil_admin_script');

        wp_register_script('wpil_help_overlay', WP_INTERNAL_LINKING_PLUGIN_URL.'js/wpil_help_overlay.js', array('jquery', 'wpil_base64'), $ver, true);
        wp_enqueue_script('wpil_help_overlay');

        if(isset($_GET['page']) && ($_GET['page'] == 'link_whisper_settings')){
            $js_path = 'js/wpil_admin_settings.js';
            $ver = filemtime(WP_INTERNAL_LINKING_PLUGIN_DIR.$js_path);
    
            wp_register_script('wpil_admin_settings_script', WP_INTERNAL_LINKING_PLUGIN_URL.$js_path, array('jquery', 'wpil_select2', 'wpil_helper'), $ver, true);
            wp_enqueue_script('wpil_admin_settings_script');

            wp_register_style('wpil_select2_css', WP_INTERNAL_LINKING_PLUGIN_URL . 'css/select2.min.css');
            wp_enqueue_style('wpil_select2_css');
            wp_register_script('wpil_select2', WP_INTERNAL_LINKING_PLUGIN_URL . 'js/select2.full.min.js', array('jquery'), $ver, true);
            wp_enqueue_script('wpil_select2');
        }

        $style_path = 'css/wpil_admin.css';
        $f_path = WP_INTERNAL_LINKING_PLUGIN_DIR.$style_path;
        $ver = filemtime($f_path);

        wp_register_style('wpil_admin_style', WP_INTERNAL_LINKING_PLUGIN_URL.$style_path, array(), $ver);
        wp_enqueue_style('wpil_admin_style');

        $disable_fonts = apply_filters('wpil_disable_fonts', false); // we've only got one font ATM
        if(empty($disable_fonts)){
            $style_path = 'css/wpil_fonts.css';
            $f_path = WP_INTERNAL_LINKING_PLUGIN_DIR.$style_path;
            $ver = filemtime($f_path);

            wp_register_style('wpil_admin_fonts', WP_INTERNAL_LINKING_PLUGIN_URL.$style_path, $deps=[], $ver);
            wp_enqueue_style('wpil_admin_fonts');
        }

        $dismissedPopups = get_user_meta(get_current_user_id(), 'wpil_dismissed_popups', true);
        $dismissedPopups = (!empty($dismissedPopups)) ? $dismissedPopups: array();
        $ajax_url = admin_url('admin-ajax.php');

        $current_page = self::get_current_page();
        $explain_page_hidden_on = (array)get_user_meta(get_current_user_id(), 'wpil_hide_explain_page_on', true);
        $dismiss_explain_page = (!empty(get_user_meta(get_current_user_id(), 'wpil_hide_explain_page_completely', true)) || in_array($current_page, $explain_page_hidden_on)) ? 1: 0;

        $script_params = array();
        $script_params['ajax_url'] = $ajax_url;
        $script_params['wpil_js_path'] = (trailingslashit(WP_INTERNAL_LINKING_PLUGIN_URL) . '/js/');
        $script_params['completed'] = __('completed', 'wpil');
        $script_params['dismissed_popups'] = $dismissedPopups;
        $script_params['dismiss_popup_nonce'] = wp_create_nonce(get_current_user_id() . 'dismiss-popup-nonce');
        $script_params['current_page'] = $current_page;
        $script_params['dismiss_explain_page'] = false; $dismiss_explain_page;

        $script_params['wpil_timepicker_format'] = Wpil_Toolbox::convert_date_format_for_js();

        $script_params['wpil_help_overlay_controls'] =
        '<div id="wpil-floating-help-menu" class="button-wave-effect" style="display: flex; flex-direction: column; gap: 10px; position: fixed; bottom: 20px; right: 20px;">
            <input type="hidden" id="wpil-floating-help-menu-nonce" value="' . wp_create_nonce(get_current_user_id() . 'wpil-floating-help-menu-nonce') . '">
            <span id="wpil-hide-explain-page-x" class="dashicons dashicons-no-alt"></span>
            <div id="wpil-explain-page-control-wrapper">
                <div class="wpil-floating-button-container">
                    <button id="wpil-explain-page-button" class="wpil-floating-button">
                        Explain Page
                    </button>
                </div>
                <div class="wpil-floating-button-container" style="display:none">
                    <button id="wpil-explain-part-button" class="wpil-floating-button">
                        Explain Part
                    </button>
                </div>
                <div id="wpil-help-overlay-controls" style="display:none;">
                    <div class="wpil-help-overlay-segment-container">
                        <div class="wpil-help-overlay-segment segments-completed"></div>
                        <div>OF</div>
                        <div class="wpil-help-overlay-segment segments-total"></div>
                    </div>
                    <div class="wpil-help-overlay-control-container">
                        <div class="wpil-help-overlay-control wpil-help-backward">
                            <button>' . self::get_svg_icon('previous-track', false, ['width'=>32]) . '</button>
                        </div>
                        <div class="wpil-help-overlay-control wpil-help-pause">
                            <button>' . self::get_svg_icon('pause', false, ['width'=>32]) . '</button>
                        </div>
                        <div class="wpil-help-overlay-control wpil-help-play" style="display:none">
                            <button>' . self::get_svg_icon('play', false, ['width'=>32]) . '</button>
                        </div>
                        <div class="wpil-help-overlay-control wpil-help-forward">
                            <button>' . self::get_svg_icon('next-track', false, ['width'=>32]) . '</button>
                        </div>
                    </div>
                </div>
            </div>
            <div id="wpil-hide-explain-page-option-wrapper" style="display:none;">
                <div class="wpil-hide-explain-page-control">
                    <button class="wpil-floating-button wpil-hide-explain-page-button" value="0">Temp Hide</button>
                </div>
                <div class="wpil-hide-explain-page-control">
                    <button class="wpil-floating-button wpil-hide-explain-page-button" value="1">Remove From This Page</button>
                </div>
                <div class="wpil-hide-explain-page-control">
                    <button class="wpil-floating-button wpil-hide-explain-page-button" value="2">Remove From All Pages</button>
                </div>
            </div>
        </div>';

        if(null !== $current_screen && 'dashboard' === $current_screen->base){
            wp_register_script('wpil_convertkit_script', 'https://f.convertkit.com/ckjs/ck.5.js', array(), false, true);
            wp_enqueue_script('wpil_convertkit_script');

            wp_register_script('wpil_email_signup_script', WP_INTERNAL_LINKING_PLUGIN_URL . 'js/email_signup.js', array('jquery'), false, true);
            wp_enqueue_script('wpil_email_signup_script');

            $user = wp_get_current_user();
            $script_params['wpil_email_dismiss_nonce']  = wp_create_nonce('wpil_email_dismiss_nonce' . (int)$user->ID);
            $script_params['current_user']              = (int)$user->ID;

            wp_register_style('wpil_convertkit_style', WP_INTERNAL_LINKING_PLUGIN_URL . 'css/email_signup.css');
            wp_enqueue_style('wpil_convertkit_style');
        }

        if(self::show_review_notice()){
            wp_register_script('wpil_review_notice_script', WP_INTERNAL_LINKING_PLUGIN_URL . 'js/review_notice.js', array('jquery'), false, true);
            wp_enqueue_script('wpil_review_notice_script');

            $user = wp_get_current_user();
            $script_params['wpil_review_dismiss_nonce'] = wp_create_nonce('wpil_review_notice_nonce' . (int)$user->ID);
            $script_params['wpil_review_nonce']         = wp_create_nonce('wpil_review_nonce' . (int)$user->ID);
            $script_params['current_user']              = (int)$user->ID;

            wp_register_style('wpil_convertkit_style', WP_INTERNAL_LINKING_PLUGIN_URL . 'css/email_signup.css');
            wp_enqueue_style('wpil_convertkit_style');
        }

        wp_localize_script('wpil_admin_script', 'wpil_ajax', $script_params);
    }

    /**
     * Gets the type of page that we're currently on
     **/
    public static function get_current_page(){
        $current_page = get_current_screen();
        $page = '';
        if(isset($_GET['type'])){
            switch($_GET['type']){
                case 'links':
                    $page = $_GET['type'];
                    break;
            }
        }elseif(isset($_GET['page']) && $_GET['page'] === 'link_whisper'){
            $page = 'dashboard';
        }elseif(!empty($current_page) && $current_page->base === 'post'){
            $page = 'post-edit';
        }elseif(!empty($current_page) && $current_page->base === 'term'){
            $page = 'term-edit';
        }

        return $page;
    }

    /**
     * Gets the available Link Whisper pages and the pages that Link Whisper is active on
     **/
    public static function get_available_pages(){
        $pages = array( 'links', 'dashboard',
                        'post-edit', 'term-edit');
        return $pages;
    }

    /**
     * Show settings link on the plugins page
     *
     * @param $links
     * @return array
     */
    public static function showSettingsLink($links)
    {
        $links[] = '<a href="admin.php?page=link_whisper_settings">Settings</a>';
        return $links;
    }

    /**
     * Displays the email sign up offer in the wp dashboard
     **/
    public static function addEmailSignupNotice(){
        $page = get_current_screen();
        if(empty($page) || !isset($page->base) || (false === strpos($page->base, 'link-whisper') && false === strpos($page->base, 'link_whisper'))){
//            return;
        }

        include WP_INTERNAL_LINKING_PLUGIN_DIR . '/templates/dashboard_email_signup_notice.php';
    }

    /**
     * Stores the admin's choice of dismissing our email offer if he should decide to do so
     **/
    public static function ajax_dismiss_email_offer_notice(){

        // if the current user id or nonce isn't set, or the nonce doesn't check out
        if( !isset($_POST['current_user']) || 
            !isset($_POST['nonce']) || 
            !wp_verify_nonce($_POST['nonce'], 'wpil_email_dismiss_nonce' . (int)$_POST['current_user']))
        {
            // send back an error
            wp_send_json('It seems there\'s been an error, please refresh the page and try again.');
        }

        // get the user id
        $user_id = (int)$_POST['current_user'];

        // update the dismissed notice status with the admin's id
        update_option(WPIL_EMAIL_OFFER_DISMISSED, $user_id);

        wp_send_json('Notice dismissed!');

    }

    /**
     * Stores the admin's choice of dismissing the premium upgrade notice in the report screen
     **/
    public static function ajax_dismiss_premium_notice(){
        // hide the premium notice
        update_option(WPIL_PREMIUM_NOTICE_DISMISSED, true);
        wp_send_json('Notice dismissed!');
    }

    /**
     * Stores the admin's choice of signing up for the email offer
     **/
    public static function ajax_signed_up_email_offer_notice(){

        // if the current user id or nonce isn't set, or the nonce doesn't check out
        if( !isset($_POST['current_user']) || 
            !isset($_POST['nonce']) || 
            !wp_verify_nonce($_POST['nonce'], 'wpil_email_dismiss_nonce' . (int)$_POST['current_user']))
        {
            // send back an error
            wp_send_json('It seems there\'s been an error, please refresh the page and try again.');
        }

        // get the user id
        $user_id = (int)$_POST['current_user'];

        // get the current list of sign ups
        $signups = get_option(WPIL_SIGNED_UP_EMAIL_OFFER, array());
        $signups = maybe_unserialize($signups);

        // if the current user isn't already on the list
        if(!isset($signups[$user_id])){
            // add the user's id to the signup list
            $signups[$user_id] = $user_id;

            // update the dismissed notice status with the admin's id
            update_option(WPIL_SIGNED_UP_EMAIL_OFFER, $signups);
        }

        wp_send_json('Subscribed for Emails!');
    }

    /**
     * Checks to see if the time is right to ask for a review!
     **/
    public static function show_review_notice(){

        // exit if the user can't use LW
        if(!current_user_can('edit_posts')){
            return false;
        }

        $install_time = get_option('wpil_free_install_date', current_time('mysql', true));
        $current_time = current_time('timestamp', true);
        $update_count = get_option('wpil_free_update_count', 0);

        // if the activation count or time limit hasn't been reached yet, exit
        if($update_count < 2 || (strtotime($install_time) + WEEK_IN_SECONDS * 3) > $current_time){
            return false;
        }

        // check if the user has already given a review or has dismissed the notice entirely
        $user = wp_get_current_user();
        $left_review = get_user_meta($user->ID, 'wpil_review_left', true);
        $perm_dismissed = get_user_meta($user->ID, 'wpil_review_notice_perm_dismissed', true);

        // if he has, exit
        if(!empty($left_review) || !empty($perm_dismissed)){
            return false;
        }

        // finally check to see if the review has been temp disabled
        $temp_disabled = get_user_meta($user->ID, 'wpil_review_notice_temp_dismissed', true);

        // if it has, exit
        if(!empty($temp_disabled) && $current_time < ($temp_disabled + WEEK_IN_SECONDS * 3)){
            return false;
        }

        // if we've made it past all the checks, it's time to show the notice!
        return true;
    }

    /**
     * Displays the notice asking the user for a review
     **/
    public static function add_notice_for_review(){
        $page = get_current_screen();
        if(empty($page) || !isset($page->base) || (false === strpos($page->base, 'link-whisper') && false === strpos($page->base, 'link_whisper'))){
//            return;
        }

        include WP_INTERNAL_LINKING_PLUGIN_DIR . '/templates/dashboard_review_request_notice.php';
    }

    /**
     * Stores the admin's choice of dismissing the request for review temporarily
     **/
    public static function ajax_dismiss_review_notice(){

        // if the current user id or nonce isn't set, or the nonce doesn't check out
        if( !isset($_POST['current_user']) || 
            !isset($_POST['nonce']) || 
            !wp_verify_nonce($_POST['nonce'], 'wpil_review_nonce' . (int)$_POST['current_user']))
        {
            // send back an error
            wp_send_json('It seems there\'s been an error, please refresh the page and try again.');
        }

        // get the user id
        $user_id = (int)$_POST['current_user'];

        // update the notice for the user with the current timestamp
        update_user_meta($user_id, 'wpil_review_notice_temp_dismissed', current_time('timestamp', true));

        wp_send_json('Notice dismissed!');

    }

    /**
     * Permanently hides the review notice from the user.
     **/
    public static function ajax_perm_dismiss_review_notice(){
        // if the current user id or nonce isn't set, or the nonce doesn't check out
        if( !isset($_POST['current_user']) || 
            !isset($_POST['nonce']) || 
            !wp_verify_nonce($_POST['nonce'], 'wpil_review_notice_nonce' . (int)$_POST['current_user']))
        {
            // send back an error
            wp_send_json('It seems there\'s been an error, please refresh the page and try again.');
        }

        // get the user id
        $user_id = (int)$_POST['current_user'];

        if(isset($_POST['leaving_review']) && !empty($_POST['leaving_review'])){
            update_user_meta($user_id, 'wpil_review_left', true);
        }

        update_user_meta($user_id, 'wpil_review_notice_perm_dismissed', true);

        wp_send_json('Notice dismissed!');
    }

    /**
     * Fill data to DB on plugin activate
     */
    public static function activate()
    {
        update_option(WPIL_EMAIL_OFFER_DISMISSED, '');
        update_option(WPIL_PREMIUM_NOTICE_DISMISSED, '');

        if('' === get_option(WPIL_OPTION_IGNORE_NUMBERS, '')){
            update_option(WPIL_OPTION_IGNORE_NUMBERS, '1');
        }
        if('' === get_option(WPIL_OPTION_POST_TYPES, '')){
            update_option(WPIL_OPTION_POST_TYPES, ['post', 'page']);
        }
        if('' === get_option(WPIL_OPTION_IGNORE_WORDS, '')){
            // if there's no ignore words, configure the language settings
            update_option('wpil_selected_language', Wpil_Settings::getSiteLanguage());
            $ignore = "-\r\n" . implode("\r\n", Wpil_Settings::getIgnoreWords()) . "\r\n-";
            update_option(WPIL_OPTION_IGNORE_WORDS, $ignore);
        }
        if('' === get_option(WPIL_LINK_TABLE_IS_CREATED, '')){
            Wpil_Report::setupWpilLinkTable(true);
        }
        if('' === get_option('wpil_free_install_date', '')){
            // set the install date so we can tell how long the user has been with us
            update_option('wpil_free_install_date', current_time('mysql', true));
        }
        if('' === get_option('wpil_free_update_count', '')){
            // start counting the updates
            update_option('wpil_free_update_count', 0);
        }else{
            $update_count = get_option('wpil_free_update_count', 0);
            update_option('wpil_free_update_count', $update_count += 1);
        }

        // disabling in 0.7.8... Shouldn't need this anymore since it's been ~4 years since the class has been used.
        //Wpil_Link::removeLinkClass();
    }

	/**
	 * Add new columns for SEO title, description and focus keywords.
	 *
	 * @param array $columns Array of column names.
	 *
	 * @return array
	 */
	public static function add_columns($columns){
		global $post_type;

        if(!in_array($post_type, Wpil_Settings::getPostTypes())){
            return $columns;
        }
        
		$columns['wpil-link-stats'] = esc_html__('Link Stats', 'wpil');

		return $columns;
	}

    /**
	 * Add content for custom column.
	 *
	 * @param string $column_name The name of the column to display.
	 * @param int    $post_id     The current post ID.
	 */
	public static function columns_contents($column_name, $post_id){
        if('wpil-link-stats' === $column_name){
            $post_status = get_post_status($post_id);
            // exit if the current post is in a status we don't process
            if(!in_array($post_status, Wpil_Settings::getPostStatuses())){
                $status_obj = get_post_status_object($post_status);
                $status = (!empty($status_obj)) ? $status_obj->label: ucfirst($post_status);
                ?>
                <span class="wpil-link-stats-column-display wpil-link-stats-content">
                    <strong><?php esc_html_e('Links: ', 'wpil'); ?></strong>
                    <span><span><?php echo sprintf(__('%s post processing %s.', 'wpil'), $status, '<a href="' . admin_url("admin.php?page=link_whisper_settings") . '">' . __('not set', 'wpil') . '</a>'); ?></span></span>
                </span>
                <?php
                return;
            }

            $post = new Wpil_Model_Post($post_id);
            $post_scanned = !empty(get_post_meta($post_id, 'wpil_sync_report3', true));
            $inbound_internal = (int)get_post_meta($post_id, 'wpil_links_inbound_internal_count', true);
            $outbound_internal = (int)get_post_meta($post_id, 'wpil_links_outbound_internal_count', true);
            $outbound_external = (int)get_post_meta($post_id, 'wpil_links_outbound_external_count', true);

            ?>
            <span class="wpil-link-stats-column-display wpil-link-stats-content">
                <?php if($post_scanned){ ?>
                <strong><?php esc_html_e('Links: ', 'wpil'); ?></strong>
                <span title="<?php esc_attr_e('Inbound Internal Links', 'wpil'); ?>"><span class="dashicons dashicons-arrow-down-alt <?php echo (!empty($inbound_internal)) ? 'wpil-has-inbound': ''; ?>"></span><span><?php echo $inbound_internal; ?></span></span>
                <span class="divider"></span>
                <span title="<?php esc_attr_e('Outbound Internal Links', 'wpil'); ?>"><a href="<?php echo esc_url(get_edit_post_link($post_id)); ?>"><span class="dashicons dashicons-external  <?php echo (!empty($outbound_internal)) ? 'wpil-has-outbound': ''; ?>"></span> <span><?php echo $outbound_internal; ?></span></a></span>
                <span class="divider"></span>
                <span title="<?php esc_attr_e('Outbound External Links', 'wpil'); ?>"><span class="dashicons dashicons-admin-site-alt3 <?php echo (!empty($outbound_external)) ? 'wpil-has-outbound': ''; ?>"></span> <span><?php echo $outbound_external; ?></span></span>
                <?php }else{ ?>
                    <?php $scan_link = $post->getLinks()->refresh; ?>
                    <strong><?php esc_html_e('Links: Not Scanned', 'wpil'); ?></strong>
                    <span title="<?php esc_attr_e('Scan Links', 'wpil'); ?>"><a target=_blank href="<?php echo esc_url($scan_link); ?>"><span><?php esc_html_e('Scan Links', 'wpil'); ?></span> <span class="dashicons dashicons-update-alt wpil-refresh-links"></span></a></span>
                <?php } ?>
            </span>
        <?php
        }
	}

    /**
     * Gets SVG icon content so that we can use the HTML in PHP
     * 
     **/
    public static function get_svg_icon($name = '', $return_reference = false, $styles = array()){
        if(empty($name)){
            return '';
        }

        $path = '';
        $id = '';
        $viewbox = '';
        $svg = '';
        switch ($name){
            case 'new-tab-1':
                $path = '<g id="wpil-svg-new-tab-1-icon-path">
                            <g fill-rule="evenodd" stroke="none" stroke-width="1" transform="matrix(0.27272726,0,0,0.27272726,-1.6363636,-1.6363636)">
                                <g>
                                <path d="m 45.5,14 h 33 7.5 v 7.5 33 7.5 h -8 v 8 h 8 c 4.418278,0 8,-3.590712 8,-8 V 54.5 21.5 14 C 94,9.581722 90.409288,6 86,6 H 78.5 45.5 38 c -4.418278,0 -8,3.5907123 -8,8 v 8 h 8 V 14 Z M 6,38.008515 C 6,33.585535 9.578055,30 14.008515,30 h 47.98297 C 66.414466,30 70,33.578055 70,38.008515 v 47.98297 C 70,90.414466 66.421945,94 61.991485,94 H 14.008515 C 9.5855345,94 6,90.421945 6,85.991485 Z M 42,46 H 34 V 58 H 22 v 8 h 12 v 12 h 8 V 66 H 54 V 58 H 42 Z" />
                                </g>
                            </g>
                        </g>';
                $id = 'wpil-svg-new-tab-1-icon-path';
                break;
            case 'new-tab-2':
                $path = '<g id="wpil-svg-new-tab-2-icon-path" transform="translate(0,-4.8755901)">
                            <path d="M 23.707456,18.327668 V 15.405081 H 13.462555 c -0.807816,0 -1.463142,-0.654761 -1.463142,-1.461874 V 6.6300173 c 0,-0.8079967 -0.654445,-1.4618817 -1.461967,-1.4618817 H 3.2185296 c -0.8078122,0 -1.4631363,0.65476 -1.4631363,1.4618817 v 7.3123117 c 0,0.806825 -0.6541545,1.461584 -1.4628478,1.461584 v 2.923755 z" fill="none" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" stroke-width="0.585091" />
                            <path d="m 23.707456,15.403913 c -0.807816,0 -1.463141,-0.653593 -1.463141,-1.461584 V 8.8232713 c 0,-0.80712 -0.655325,-1.461879 -1.464309,-1.461879 h -7.317451 c -0.808986,0 -1.463142,0.654759 -1.463142,1.461879 v 5.1190577 c 0,0.807991 0.655326,1.461584 1.464019,1.461584 z" fill="none" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" stroke-width="0.585091" />
                            <path d="M 17.121717,9.5546463 V 13.20978 Z" fill="none" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" stroke-width="0.585094" />
                            <path d="m 15.292428,11.382361 h 3.658577 z" fill="none" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" stroke-width="0.585094" />
                        </g>';
                $id = 'wpil-svg-new-tab-2-icon-path';
                break;
            case 'outbound-1':
                $path = '<g id="wpil-svg-outbound-1-icon-path" transform="matrix(0.046875,0,0,0.046875,0.0234375,0.02343964)">
                            <path d="M 473.563,227.063 407.5,161 262.75,305.75 c -25,25 -49.563,41 -74.5,16 -25,-25 -9,-49.5 16,-74.5 L 349,102.5 283.937,37.406 c -14.188,-14.188 -2,-37.906 19,-37.906 h 170.625 c 20.938,0 37.938,16.969 37.938,37.906 v 170.688 c 0,20.937 -23.687,33.187 -37.937,18.969 z M 63.5,447.5 h 320 V 259.313 l 64,64 V 447.5 c 0,35.375 -28.625,64 -64,64 h -320 c -35.375,0 -64,-28.625 -64,-64 v -320 c 0,-35.344 28.625,-64 64,-64 h 124.188 l 64,64 H 63.5 Z" />
                        </g>';
                $id = 'wpil-svg-outbound-1-icon-path';
                break;
            case 'outbound-2':
                $path = '<g id="wpil-svg-outbound-2-icon-path" transform="matrix(1.2,0,0,1.2,-2.4,-2.4)">
                            <path d="m 20,18 c 0,1.103 -0.897,2 -2,2 H 6 C 4.897,20 4,19.103 4,18 V 6 C 4,4.897 4.897,4 6,4 h 7 V 2 H 6 C 3.794,2 2,3.794 2,6 v 12 c 0,2.206 1.794,4 4,4 h 12 c 2.206,0 4,-1.794 4,-4 v -7 h -2 z"/>
                            <polygon points="22,9 21.999,2 15,2 15,4 18.586,4 13.465,9.121 14.879,10.535 20,5.415 20,9 " />
                        </g>';
                $id = 'wpil-svg-outbound-2-icon-path';
                break;
            case 'outbound-3':
                $path = '<g id="wpil-svg-outbound-3-icon-path">
                            <g transform="matrix(0.92307697,0,0,0.92307697,-209.5794,-43.317149)">
                                <g fill-rule="evenodd" id="action" stroke="none" stroke-width="1" transform="translate(225.04432,44.926904)">
                                    <g transform="translate(-224.99998,-44.999995)">
                                        <g transform="translate(227,47)">
                                            <path d="m 21,12 c 0.552285,0 1,-0.447715 1,-1 V 5 C 22,4.4477152 21.552285,4 21,4 h -6 c -0.552285,0 -1,0.4477152 -1,1 0,0.5522847 0.447715,1 1,1 h 3.580002 l -6.287109,6.292893 c -0.390524,0.390524 -0.390524,1.02369 0,1.414214 0.390524,0.390524 1.02369,0.390524 1.414214,0 L 20,7.4190674 V 11 c 0,0.552285 0.447715,1 1,1 z" />
                                            <path d="m 20,18 v 6.008845 C 20,25.108529 19.110326,26 18.008845,26 H 1.991155 C 0.89147046,26 0,25.110326 0,24.008845 V 7.991155 C 0,6.8914705 0.88967395,6 1.991155,6 H 8 V 8 H 2 v 16 h 16 v -6 z" />
                                            <path d="M 24.008845,0 C 25.108529,0 26,0.88967395 26,1.991155 v 16.01769 C 26,19.108529 25.110326,20 24.008845,20 H 7.991155 C 6.8914705,20 6,19.110326 6,18.008845 V 1.991155 C 6,0.89147046 6.8896739,0 7.991155,0 Z M 8,2 H 24 V 18 H 8 Z" />
                                        </g>
                                    </g>
                                </g>
                            </g>
                        </g>';
                $id = 'wpil-svg-outbound-3-icon-path';
                break;
            case 'outbound-4':
                $path = '<g id="wpil-svg-outbound-4-icon-path">
                            <g fill-rule="evenodd" id="action" stroke="none" stroke-width="1" transform="matrix(0.92307696,0,0,0.92307696,-1.8461539,-1.8461539)">
                                <g transform="translate(-270,-45)">
                                    <g transform="translate(272,47)">
                                        <path d="m 20,22 v 2.008845 C 20,25.108529 19.110326,26 18.008845,26 H 16 v -2 h 2 v -2 z m 0,-2 v -2 h -2 v 2 z m -6,6 h -3 v -2 h 3 z M 9,26 H 6 V 24 H 9 Z M 4,26 H 1.991155 C 0.89147046,26 0,25.110326 0,24.008845 V 22 h 2 v 2 H 4 Z M 0,20 v -3 h 2 v 3 z m 0,-5 v -3 h 2 v 3 z M 0,10 V 7.991155 C 0,6.8914705 0.88967395,6 1.991155,6 H 4 V 8 H 2 v 2 z M 6,6 H 8 V 8 H 6 Z" />
                                        <path d="M 24.008845,0 C 25.108529,0 26,0.88967395 26,1.991155 v 16.01769 C 26,19.108529 25.110326,20 24.008845,20 H 7.991155 C 6.8914705,20 6,19.110326 6,18.008845 V 1.991155 C 6,0.89147046 6.8896739,0 7.991155,0 Z M 8,2 H 24 V 18 H 8 Z" />
                                        <path d="m 21,12 c 0.552285,0 1,-0.447715 1,-1 V 5 C 22,4.4477152 21.552285,4 21,4 h -6 c -0.552285,0 -1,0.4477152 -1,1 0,0.5522847 0.447715,1 1,1 h 3.580002 l -6.287109,6.292893 c -0.390524,0.390524 -0.390524,1.02369 0,1.414214 0.390524,0.390524 1.02369,0.390524 1.414214,0 L 20,7.4190674 V 11 c 0,0.552285 0.447715,1 1,1 z" />
                                    </g>
                                </g>
                            </g>
                        </g>';
                $id = 'wpil-svg-outbound-4-icon-path';
                break;
            case 'outbound-5':
                $path = '<g id="wpil-svg-outbound-5-icon-path">
                            <g transform="matrix(0.3,0,0,0.3,-2.4,-2.4)">
                                <path d="M 73.788323,16 44.56401,45.224313 c -1.715534,1.715534 -1.718018,4.503944 2.89e-4,6.222251 1.71481,1.71481 4.504103,1.718436 6.222251,2.89e-4 L 80,22.233402 v 9.769759 C 80,34.20588 81.790861,36 84,36 c 2.204644,0 4,-1.789446 4,-3.996839 V 11.996839 C 88,10.896005 87.552712,9.8972231 86.829463,9.173436 86.105113,8.4484102 85.10633,8 84.003161,8 H 63.996839 C 61.79412,8 60,9.790861 60,12 c 0,2.204644 1.789446,4 3.996839,4 z M 88,56 V 36.985151 78.029699 C 88,83.536144 84.032788,88 79.132936,88 H 16.867063 C 11.96992,88 8,83.527431 8,78.029699 V 17.970301 C 8,12.463856 11.967212,8 16.867063,8 H 59.566468 40 c 2.209139,0 4,1.790861 4,4 0,2.209139 -1.790861,4 -4,4 H 18.277794 C 17.005287,16 16,17.194737 16,18.668519 V 77.331481 C 16,78.778664 17.019803,80 18.277794,80 H 77.722206 C 78.994713,80 80,78.805263 80,77.331481 V 56 c 0,-2.209139 1.790861,-4 4,-4 2.209139,0 4,1.790861 4,4 z" />
                            </g>
                        </g>';
                $id = 'wpil-svg-outbound-5-icon-path';
                break;
            case 'outbound-6':
                $path = '<g id="wpil-svg-outbound-6-icon-path">
                            <g fill-rule="evenodd" transform="matrix(0.5959368,0,0,0.5959368,-2.3837472,-2.2212188)">
                                <path d="m 40,24.965598 c 0,-0.552285 0.447715,-1 1,-1 0.552285,0 1,0.447715 1,1 0,3.469059 -0.129275,6.918922 -0.387834,10.349539 -0.334407,4.436897 -3.860867,7.963515 -8.297748,8.298115 C 29.895466,43.871087 26.457309,44 23,44 19.540669,44 16.100512,43.870937 12.679584,43.6128 8.2429399,43.278024 4.7167289,39.751579 4.3822446,35.314912 4.127407,31.934695 4,28.519214 4,25.068519 4,21.588185 4.1296049,18.127086 4.3888246,14.685273 4.723001,10.248145 8.2495818,6.7212457 12.68668,6.3866649 16.10527,6.128885 19.543061,6 23,6 23.552285,6 24,6.4477152 24,7 24,7.5522847 23.552285,8 23,8 19.593137,8 16.205509,8.1270043 12.837064,8.381003 9.3859872,8.6412326 6.6430914,11.384376 6.3831764,14.835476 6.1277288,18.227205 6,21.638202 6,25.068519 6,28.469267 6.1255362,31.834597 6.3765849,35.164557 6.6367394,38.615298 9.3793476,41.358088 12.830071,41.61847 16.200821,41.87282 19.590779,42 23,42 c 3.407228,0 6.795216,-0.127032 10.164018,-0.381085 3.450907,-0.260245 6.19371,-3.00317 6.453804,-6.454089 C 39.872604,31.784331 40,28.384605 40,24.965598 Z M 40.834267,5.7513115 c -0.09391,-0.015809 -0.190403,-0.024039 -0.288813,-0.024039 H 30.543365 c -0.552285,0 -1,-0.4477152 -1,-1 0,-0.5522847 0.447715,-1 1,-1 h 10.002089 c 2.058516,0 3.727273,1.6687569 3.727273,3.7272728 v 9.9999997 c 0,0.552285 -0.447715,1 -1,1 -0.552285,0 -1,-0.447715 -1,-1 V 7.4545455 c 0,-0.098534 -0.0083,-0.1951415 -0.0241,-0.2891685 L 30.340158,19.070833 C 29.397229,20.013522 27.983195,18.59913 28.926123,17.65644 Z" fill-rule="nonzero" />
                            </g>
                        </g>';
                $id = 'wpil-svg-outbound-6-icon-path';
                break;
            case 'outbound-7':
                $path = '<g id="wpil-svg-outbound-7-icon-path" fill="none" clip-path="url(#clip0_31_188)">
                            <path d="M9.16724 14.8891L20.1672 3.88908" stroke-linecap="round"/>
                            <path d="M13.4497 3.53554L20.5208 3.53554L20.5208 10.6066" stroke-linecap="round" stroke-linejoin="round"/>
                            <path d="M17.5 13.5L17.5 16.26C17.5 17.4179 17.5 17.9968 17.2675 18.4359C17.0799 18.7902 16.7902 19.0799 16.4359 19.2675C15.9968 19.5 15.4179 19.5 14.26 19.5L7.74 19.5C6.58213 19.5 6.0032 19.5 5.56414 19.2675C5.20983 19.0799 4.92007 18.7902 4.73247 18.4359C4.5 17.9968 4.5 17.4179 4.5 16.26L4.5 9.74C4.5 8.58213 4.5 8.0032 4.73247 7.56414C4.92007 7.20983 5.20982 6.92007 5.56414 6.73247C6.0032 6.5 6.58213 6.5 7.74 6.5L11 6.5" stroke-linecap="round"/>
                        </g>
                        <defs>
                            <clipPath id="clip0_31_188">
                                <rect fill="white" height="24" width="24"/>
                            </clipPath>
                        </defs>';
                $id = 'wpil-svg-outbound-7-icon-path';
                break;
            case 'outbound-8':
                $path = '<g id="wpil-svg-outbound-8-icon-path">
                            <path d="M 19.318245,10.90244 H 17.12283 V 8.429854 L 13.552391,12.000586 12.000586,10.44761 15.569855,6.87922 H 13.097562 V 4.6840981 h 5.488683 c 0.402439,0 0.732,0.3286829 0.732,0.7308291 z" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" stroke-width="0.585367" />
                            <path d="M 21.512196,0.29268351 H 9.8054636 c -1.211999,0 -2.195122,0.98312199 -2.195122,2.19512209 V 14.195708 c 0,1.212 0.983123,2.195122 2.195122,2.195122 H 21.512196 c 1.212293,0 2.195122,-0.983122 2.195122,-2.195122 V 2.4878056 c 0,-1.2120001 -0.982829,-2.19512209 -2.195122,-2.19512209 z m 0,13.53687849 c 0,0.201073 -0.164488,0.366146 -0.364976,0.366146 H 10.171611 c -0.2016594,0 -0.3661474,-0.165073 -0.3661474,-0.366146 V 2.8539517 c 0,-0.2007804 0.164488,-0.3661461 0.3661474,-0.3661461 H 21.14722 c 0.200781,0 0.364976,0.1653657 0.364976,0.3661461 z" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" stroke-width="0.585367" />
                            <path d="m 14.195708,16.39083 v 4.75639 c 0,0.200781 -0.164487,0.364976 -0.365853,0.364976 H 2.8539517 c -0.2007804,0 -0.3661461,-0.164488 -0.3661461,-0.364976 V 10.17161 c 0,-0.2007804 0.1653657,-0.3661464 0.3661461,-0.3661464 H 7.6100496 V 7.610342 h -5.122244 c -1.2120001,0 -2.19512209,0.9831219 -2.19512209,2.1951216 V 21.512196 c 0,1.212293 0.98312199,2.195122 2.19512209,2.195122 H 14.195708 c 1.212,0 2.195122,-0.982829 2.195122,-2.195122 V 16.39083 Z" stroke-linecap="round" stroke-linejoin="round" stroke-miterlimit="10" stroke-width="0.585367" />
                        </g>';
                $id = 'wpil-svg-outbound-8-icon-path';
                break;
            case 'previous-track':
                $path = '<g id="wpil-svg-previous-track-icon-path">
                            <path d="M51.617,7.497c-1.029-0.525-2.271-0.429-3.206,0.25L22.829,26.328c-0.796,0.578-1.269,1.505-1.269,2.489   c0,0.987,0.47,1.913,1.269,2.491L48.411,49.89c0.534,0.389,1.171,0.588,1.808,0.588c0.479,0,0.957-0.109,1.398-0.336   c1.03-0.525,1.682-1.584,1.682-2.742V10.24C53.299,9.083,52.647,8.021,51.617,7.497z"/>
                            <path d="M14.512,7.357H6.744c-0.947,0-1.716,0.769-1.716,1.716v39.918c0,0.949,0.769,1.717,1.716,1.717h7.768   c0.947,0,1.717-0.768,1.717-1.717V9.073C16.229,8.125,15.459,7.357,14.512,7.357z"/>
                        </g>';
                $id = 'wpil-svg-previous-track-icon-path';
                $viewbox = '0 0 56 56';
                break;
            case 'pause':
                $path = '<g id="wpil-svg-pause-icon-path">
                            <path d="M21.765,8.138h-7.768c-0.947,0-1.716,0.768-1.716,1.716v39.918c0,0.947,0.769,1.717,1.716,1.717h7.768   c0.947,0,1.717-0.77,1.717-1.717V9.854C23.481,8.906,22.712,8.138,21.765,8.138z"/>
                            <path d="M43.044,8.138h-7.767c-0.948,0-1.717,0.768-1.717,1.716v39.918c0,0.947,0.769,1.717,1.717,1.717h7.767   c0.948,0,1.717-0.77,1.717-1.717V9.854C44.761,8.906,43.992,8.138,43.044,8.138z"/>
                        </g>';
                $id = 'wpil-svg-pause-icon-path';
                $viewbox = '0 0 56 56';
                break;
            case 'play':
                $path = '<g id="wpil-svg-play-icon-path" transform="scale(-1, 1) translate(-56, 0)">
                            <path d="M42.102,7.123c-1.051-0.535-2.322-0.438-3.279,0.259L12.657,26.385c-0.815,0.592-1.298,1.54-1.298,2.547  c0,1.01,0.48,1.956,1.298,2.547l26.165,19.006c0.547,0.398,1.199,0.604,1.85,0.604c0.49,0,0.979-0.115,1.43-0.344  c1.055-0.539,1.721-1.623,1.721-2.807V9.929C43.822,8.745,43.156,7.661,42.102,7.123z"/>
                        </g>';
                $id = 'wpil-svg-play-icon-path';
                $viewbox = '0 0 56 56';
                break;
            case 'next-track':
                $path = '<g id="wpil-svg-next-track-icon-path">
                            <path d="M34.66,26.426L9.078,7.846C8.144,7.167,6.9,7.069,5.872,7.595C4.841,8.121,4.19,9.18,4.19,10.338v37.161   c0,1.156,0.65,2.217,1.682,2.742c0.441,0.227,0.92,0.336,1.398,0.336c0.637,0,1.273-0.201,1.808-0.588L34.66,31.405   c0.798-0.578,1.269-1.504,1.269-2.488C35.929,27.931,35.456,27.004,34.66,26.426z"/>
                            <path d="M50.744,7.456h-7.767c-0.948,0-1.717,0.769-1.717,1.716v39.919c0,0.947,0.769,1.715,1.717,1.715h7.767   c0.948,0,1.716-0.768,1.716-1.715V9.171C52.46,8.224,51.692,7.456,50.744,7.456z"/>
                        </g>';
                $id = 'wpil-svg-next-track-icon-path';
                $viewbox = '0 0 56 56';
                break;
        }

        if(!empty($path)){
            $custom_style = '';
            if(!empty($styles)){
                $custom_style = Wpil_Toolbox::validate_inline_styles($styles, true);
            }

            if(!empty($viewbox) && !empty($custom_style)){
                // width="auto" height="auto"
                $style = ' ' . $custom_style . ' viewBox="'.$viewbox.'"';
            }else{
                $style = 'width="24" height="24" ' . $custom_style . ' viewBox="0 0 24 24"';
            }

            $svg = '<svg ' . $style . ' version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">';
            if($return_reference){
                $svg .= '<use href="#' . $id . '"></use>';
            }else{
                $svg .= $path;
            }
            $svg .= '</svg>';
        }

        return $svg;
    }

    public static function fixCollation($table)
    {
        global $wpdb;
        $table_status = $wpdb->get_results("SHOW TABLE STATUS where name like '$table'");
        if (!empty($table_status) && (empty($table_status[0]->Collation) || $table_status[0]->Collation != 'utf8mb4_unicode_ci')) {
            $wpdb->query("alter table $table convert to character set utf8mb4 collate utf8mb4_unicode_ci");
        }
    }

    public static function verify_nonce($key)
    {
        $user = wp_get_current_user();
        if(!isset($_REQUEST['nonce']) || !wp_verify_nonce($_REQUEST['nonce'], $user->ID . $key)){
            wp_send_json(array(
                'error' => array(
                    'title' => __('Data Error', 'wpil'),
                    'text'  => __('There was an error in processing the data, please reload the page and try again.', 'wpil'),
                )
            ));
        }
    }

    /**
     * Runs the update rountines when the plugin is updated.
     */
    function upgrade_complete($upgrader_object, $options){
        // If an update has taken place and the updated type is plugins and the plugins element exists
        if( $options['action'] == 'update' && $options['type'] == 'plugin' && isset( $options['plugins'] ) ) {
            // Go through each plugin to see if Link Whisper was updated
            foreach( $options['plugins'] as $plugin ) {
                if( $plugin == WPIL_PLUGIN_NAME ) {
                    // refire the activate routine if it was
                    $this::activate();
                    // 
                }
            }
        }
    }

    /**
     * Removes a hooked function from the wp hook or filter.
     * We have to flip through the hooked functions because a lot of the methods use instantiated objects
     *
     * @param string $tag The hook/filter name that the function is hooked to
     * @param string $object The object who's method we're removing from the hook/filter
     * @param string $function The object method that we're removing from the hook/filter
     * @param int $priority The priority of the function that we're removing
     **/
    public static function remove_hooked_function($tag, $object, $function, $priority){
        global $wp_filter;
        $priority = intval($priority);

        // if the hook that we're looking for does exist and at the priority we're looking for
        if( isset($wp_filter[$tag]) &&
            isset($wp_filter[$tag]->callbacks) &&
            !empty($wp_filter[$tag]->callbacks) &&
            isset($wp_filter[$tag]->callbacks[$priority]) &&
            !empty($wp_filter[$tag]->callbacks[$priority]))
        {
            // look over all the callbacks in the priority we're looking in
            foreach($wp_filter[$tag]->callbacks[$priority] as $key => $data)
            {
                // if the current item is the callback we're looking for
                if(isset($data['function']) && (is_a($data['function'][0], $object) || $data['function'][0] === $object) && $data['function'][1] === $function){
                    // remove the callback
                    unset($wp_filter[$tag]->callbacks[$priority][$key]);
                }
            }
        }
    }

    /**
     * Removes all functions that are of a lower priority than the one we supply.
     * If we're working on a main stack process, and we need to loop back for something,
     * there shouldn't be a need to re-call all the other functions that have gone before
     *
     * @param string $tag The hook/filter name that the functions are hooked to
     * @param int $priority_limit The limit on how high of priority hooks we should remove
     **/
    public static function remove_lower_priority_hooked_functions($tag, $priority_limit = 0){
        global $wp_filter;
        $priority_limit = intval($priority_limit);

        // if the hook that we're looking for does exist and at the priority we're looking for
        if( isset($wp_filter[$tag]) &&
            isset($wp_filter[$tag]->callbacks) &&
            !empty($wp_filter[$tag]->callbacks))
        {
            foreach($wp_filter[$tag]->callbacks as $priority => $callbacks){
                if($priority < $priority_limit){
                    unset($wp_filter[$tag]->callbacks[$priority]);
                }
            }
        }
    }

    /**
     * Checks to see if one of the calling ancestors of the current function is what we're looking for
     **/
    public static function has_ancestor_function($function_name = '', $class_name = ''){
        if(empty($function_name)){
            return false;
        }

        $call_stack = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);

        if(!empty($call_stack)){
            foreach($call_stack as $call){
                if( isset($call['function']) && $call['function'] === $function_name &&
                    (empty($class_name) || isset($call['class']) && $call['class'] === $class_name)
                ){
                    return true;
                }
            }
        }

        return false;
    }

    /**
     * Updates the WP option cache independently of the update_options functionality.
     * I've found that for some users the cache won't update and that keeps some option based processing from working.
     * The code is mostly pulled from the update_option function
     *
     * @param string $option The name of the option that we're saving.
     * @param mixed $value The option value that we're saving.
     **/
    public static function update_option_cache($option = '', $value = ''){
        $option = trim( $option );
        if ( empty( $option ) ) {
            return false;
        }

        $serialized_value = maybe_serialize( $value );
        $alloptions = wp_load_alloptions( true );
        if ( isset( $alloptions[ $option ] ) ) {
            $alloptions[ $option ] = $serialized_value;
            wp_cache_set( 'alloptions', $alloptions, 'options' );
        } else {
            wp_cache_set( $option, $serialized_value, 'options' );
        }
    }

    /**
     * Makes sure that the transients are set and that the option cache is updated when data is saved.
     * There are some cases of the transients not sticking, even though they are supposed to be active.
     * I believe the issue is object caching catching the update information, and then not passing it back when we ask for it.
     * 
     * Uses the same arguments as the WP transient function
     **/
    public static function set_transient($transient, $value, $expiration = 0) {

        $expiration         = (int) $expiration;
        $transient_timeout  = '_transient_timeout_' . $transient;
        $transient_option   = '_transient_' . $transient;

        if(false === get_option($transient_option)){
            $autoload = 'yes';
            if($expiration){
                $autoload = 'no';
                add_option($transient_timeout, time() + $expiration, '', 'no');
            }
            $result = add_option($transient_option, $value, '', $autoload);
        }else{
            /*
            * If expiration is requested, but the transient has no timeout option,
            * delete, then re-create transient rather than update.
            */
            $update = true;

            if($expiration){
                if(false === get_option($transient_timeout)){
                    delete_option($transient_option);
                    add_option($transient_timeout, time() + $expiration, '', 'no');
                    $result = add_option($transient_option, $value, '', 'no');
                    $update = false;
                }else{
                    update_option($transient_timeout, time() + $expiration);
                    self::update_option_cache($transient_timeout, time() + $expiration);
                }
            }

            if($update){
                $result = update_option($transient_option, $value);
                self::update_option_cache($transient_option, $value);
            }
        }

        return $result;
    }

    /**
     * Deletes all Link Whisper related data on plugin deletion
     **/
    public static function delete_link_whisper_data(){
        global $wpdb;

        // if we're not really sure that the user wants to delete all data, exit
        if('1' !== get_option('wpil_delete_all_data', false)){
            return;
        }

        // create a list of all possible tables
        $tables = self::getDatabaseTableList();

        // go over the list of tables and delete all tables that exist
        foreach($tables as $table){
            $table_exists = $wpdb->get_var("SHOW TABLES LIKE '{$table}'");
            if($table_exists === $table){
                $wpdb->query("DROP TABLE {$table}");
            }
        }

        // delete all of the settings from the options table
        $wpdb->query("DELETE FROM {$wpdb->options} WHERE `option_name` LIKE 'wpil_%' OR `option_name` LIKE 'wpil_2_%'");

        // clear all of the transients
        $wpdb->query("DELETE FROM {$wpdb->options} WHERE `option_name` LIKE '_transient_wpil_%' OR `option_name` LIKE '_transient_timeout_wpil_%'");

        // delete all of the link metafields
        Wpil_Report::clearMeta();
    }

    /**
     * Checks to see if we're over the time limit.
     * 
     * @param int $time_pad The amount of time in advance of the PHP time limit that is considered over the time limit
     * @param int $max_time The absolute time limit that we'll wait for the current process to complete
     * @return bool
     **/
    public static function overTimeLimit($time_pad = 0, $max_time = null, $return_time_limit = false){
        $limit = ini_get( 'max_execution_time' );

        // if there is no limit or the limit is larger than 90 seconds
        if(empty($limit) || $limit === '-1' || $limit > 90){
            // create a self imposed limit so the user know LW is still working on looped actions
            $limit = 90;
        }

        // filter the limit so users with special constraints can make adjustments
        $limit = apply_filters('wpil_filter_processing_time_limit', $limit);

        // if the exit time pad is less than the limit
        if($limit < $time_pad){
            // default to a 5 second pad
            $time_pad = 5;
        }

        // if we're supposed to return the time limit
        if($return_time_limit){
            // find the shortest processing time and return it
            return ($max_time !== null && $max_time < ($limit - $time_pad)) ? $max_time: ($limit - $time_pad);
        }

        // get the current time
        $current_time = microtime(true);

        // if we've been running for longer than the PHP time limit minus the time pad, OR
        // a max time has been set and we've passed it
        if( ($current_time - WPIL_STATUS_PROCESSING_START) > ($limit - $time_pad) || 
            $max_time !== null && ($current_time - WPIL_STATUS_PROCESSING_START) > $max_time)
        {
            // signal that we're over the time limit
            return true;
        }else{
            return false;
        }
    }

    /**
     * Returns an array of all the tables created by Link Whisper.
     * @param bool $should_prefix Should the returned tables have the site's database prefix attached?
     * @return array
     **/
    public static function getDatabaseTableList($should_prefix = true){
        global $wpdb;

        if($should_prefix){
            $prefix = $wpdb->prefix;
        }else{
            $prefix = '';
        }

        return array(
            "{$prefix}wpil_report_links",
        );
    }

    /**
     * Helper function to set WP to not use external object caches when doing AJAX
     **/
    public static function ignore_external_object_cache($ignore_ajax = false){
        if( (defined('DOING_AJAX') && DOING_AJAX || $ignore_ajax) &&
            function_exists('wp_using_ext_object_cache') &&
            file_exists( WP_CONTENT_DIR . '/object-cache.php') &&
            wp_using_ext_object_cache())
        {
            if(!defined('WP_REDIS_DISABLED') && defined('WP_REDIS_FILE')){
                define('WP_REDIS_DISABLED', true);
            }
            wp_using_ext_object_cache(false);
        }
    }

    /**
     *  Helper function to remove any problem hooks interfering with our AJAX requests
     * 
     * @param bool $ignore_ajax True allows the removing of hooks when ajax is not running
     **/
    public static function remove_problem_hooks($ignore_ajax = false){
        $admin_ajax = is_admin() && defined('DOING_AJAX') && DOING_AJAX;

        if( ($admin_ajax || $ignore_ajax) && defined('TOC_VERSION')){
            remove_all_actions('wp_enqueue_scripts');
        }
    }

    /**
     * Tracks actions that have taken place so we can tell if something in a distantly connected part of Link Whisper happened
     * 
     * @param string $action The name we've given to the action that's happened
     * @param mixed $value The value of the action that we're watching
     * @param bool $overwrite_true Should we overwrite TRUE results with whatever we currently have? By default, we don't so we can track if a result happened somewhere
     **/
    public static function track_action($action = '', $value = null, $overwrite_true = false){
        if(empty($action) || !is_string($action)){
            return;
        }

        // if the action has happened AND we should overwrite that status with the most recent one
        if(isset(self::$action_tracker[$action]) && !empty(self::$action_tracker[$action]) && $overwrite_true){
            self::$action_tracker[$action] = $value;
        }elseif(!array_key_exists($action, self::$action_tracker)){ // if the event has not happened yet
            self::$action_tracker[$action] = $value;
        }elseif(array_key_exists($action, self::$action_tracker) && empty(self::$action_tracker[$action]) && !empty($value)){ // if the event has been attempted and hasn't succeeded yet, but we now have a record of it happening!
            self::$action_tracker[$action] = $value;
        }
    }

    public static function action_happened($action = '', $return_result = true){
        if(empty($action) || !is_string($action)){
            return false;
        }

        $logged = array_key_exists($action, self::$action_tracker);

        if(!$logged){
            return false;
        }

        return ($return_result) ? self::$action_tracker[$action]: $logged;
    }

    public static function clear_tracked_action($action = ''){
        if(empty($action) || !is_string($action)){
            return;
        }

        if(array_key_exists($action, self::$action_tracker)){
            unset(self::$action_tracker[$action]);
        }
    }

    public static function ajax_hide_explain_page(){
        Wpil_Base::verify_nonce('wpil-floating-help-menu-nonce');

        $user_id = get_current_user_id();
        if(isset($_POST['hide_on_all_pages']) && !empty((int)$_POST['hide_on_all_pages'])){
            update_user_meta($user_id, 'wpil_hide_explain_page_completely', '1');
        }else{
            if(isset($_POST['current_page']) && !empty($_POST['current_page'])){
                $available_pages = self::get_available_pages();
                if(in_array($_POST['current_page'], $available_pages)){
                    $hidden_pages = get_user_meta($user_id, 'wpil_hide_explain_page_on', true);

                    if(empty($hidden_pages)){
                        $hidden_pages = array();
                    }
                    $hidden_pages[] = trim($_POST['current_page']);
                    update_user_meta($user_id, 'wpil_hide_explain_page_on', $hidden_pages);
                }
            }
        }
    }
}