<?php

/**
 * FrontEnd Class
 *
 * @package NotificationX\FrontEnd
 */

namespace NotificationX\FrontEnd;

use NotificationX\Admin\Entries;
use NotificationX\Admin\Settings;
use NotificationX\Core\Analytics;
use NotificationX\Core\Database;
use NotificationX\Core\GetData;
use NotificationX\NotificationX;
use NotificationX\Core\Locations;
use NotificationX\Core\PostType;
use NotificationX\Core\REST;
use NotificationX\GetInstance;
use NotificationX\Extensions\PressBar\PressBar;
use NotificationX\Core\Helper;
use NotificationX\Extensions\ExtensionFactory;
use NotificationX\Types\GDPR;

/**
 * This class is responsible for all Front-End actions.
 * @method static FrontEnd get_instance($args = null)
 */
class FrontEnd {
    /**
     * Instance of FrontEnd
     *
     * @var FrontEnd
     */
    use GetInstance;
    /**
     * Assets Path and URL
     */
    const ASSET_URL  = NOTIFICATIONX_ASSETS . 'public/';
    const ASSET_PATH = NOTIFICATIONX_ASSETS_PATH . 'public/';
    protected $notificationXArr = [];

    /**
     * Initially Invoked
     * when its initialized.
     */
    public function __construct() {
        Analytics::get_instance();
        if (!is_admin() || !empty($_GET['frontend'])) {
            add_action('init', [$this, 'init'], 10);
        }
        add_filter('nx_frontend_localize_data', [$this, 'get_localize_data']);
        Preview::get_instance();
    }

    /**
     * This method is reponsible for Admin Menu of
     * NotificationX
     *
     * @return void
     */
    public function init() {
        add_action('wp_enqueue_scripts', [$this, 'enqueue_scripts'], 10);
        add_filter('nx_fallback_data', [$this, 'fallback_data'], 10, 3);
        add_filter('nx_filtered_data', [$this, 'filtered_data'], 9999, 3);
        add_filter('nx_filtered_post', [$this, 'filtered_post'], 9999, 2);
        add_action('wp_print_footer_scripts', [$this, 'footer_scripts']);
        add_filter('body_class', [ $this, 'nx_add_body_class' ] );

    }

    /**
     * This method is responsible for enqueueing scripts for public use.
     *
     * @return void
     */
    public function enqueue_scripts() {
        $custom_css = $this->generate_custom_css();
        wp_register_script('notificationx-public', Helper::file('public/js/frontend.js', true), [], apply_filters('nx_frontend_js_version', NOTIFICATIONX_VERSION ), true);
        wp_register_style('notificationx-public', Helper::file('public/css/frontend.css', true), [], apply_filters('nx_frontend_css_version', NOTIFICATIONX_VERSION ), 'all');
        // wp_register_style('notificationx-icon-pack', Helper::file('public/icon/style.css', true), [], NOTIFICATIONX_VERSION, 'all');
        // Localize scripts for frontend
        wp_localize_script(
            'notificationx-public',
            'notificationxPublic',
            array(
                'necessary_tab_info'   => [
                    'title' => __('Necessary', 'notificationx'),
                    'desc' => __('Necessary cookies are needed to ensure the basic functions of this site, like allowing secure log-ins and managing your consent settings. These cookies do not collect any personal information.', 'notificationx'),
                ],
                'functional_tab_info'   => [
                    'title' => __('Functional', 'notificationx'),
                    'desc' => __('Functional cookies assist in performing tasks like sharing website content on social media, collecting feedback, and enabling other third-party features.', 'notificationx'),
                ],
                'analytics_tab_info'   => [
                    'title' => __('Analytics', 'notificationx'),
                    'desc' => __('Analytical cookies help us understand how visitors use the website. They provide data on metrics like the number of visitors, bounce rate, traffic sources etc.', 'notificationx'),
                ],
                'performance_tab_info'   => [
                    'title' => __('Performance', 'notificationx'),
                    'desc' => __("Performance cookies help analyze the website's key performance indicators, which in turn helps improve the user experience for visitors.", 'notificationx'),
                ],
                'advertising_tab_info'   => [
                    'title' => __('Advertisement', 'notificationx'),
                    'desc' => __("Advertisement cookies help analyze the website's key advertising indicators, which in turn helps improve the user experience for visitors.", 'notificationx'),
                ],
                'uncategorized_tab_info'   => [
                    'title' => __('Uncategorized', 'notificationx'),
                    'desc' => __("Uncategorized cookies are those that don't fall into any specific category but may still be used for various purposes on the site. These cookies help us improve user experience by tracking interactions that don't fit into other cookie types.", 'notificationx'),
                ],
                'is_enabled_wp_consent_api' => is_plugin_active('wp-consent-api/wp-consent-api.php'),
            )
        );

        $exit = false;
        if(isset($_SERVER['HTTP_REFERER']) && strpos($_SERVER['HTTP_REFERER'], 'wp-admin/widgets.php') !== false){
            $exit = ['total' => 0];
        }

        $exit = apply_filters('nx_before_enqueue_scripts', $exit);
        if(!empty($exit)){
            $this->notificationXArr = $exit;
            return;
        }

        if (!$exit && empty($_GET['elementor-preview'])) {
            $this->notificationXArr = $this->get_notifications_ids();
            if ($this->notificationXArr['total'] > 0) {
                $lang = get_locale();
                $lang = str_replace('_', '-', $lang);
                $lang = strtolower($lang);
                $_lang = explode('-', $lang);
                if ($lang !== "en" && $lang !== "en-us") {
                    $script = Helper::file("public/locale/$lang.js", false);
                    if (file_exists($script)) {
                        wp_enqueue_script('notificationx-moment-locale', Helper::file("public/locale/$lang.js", true), [], NOTIFICATIONX_VERSION, true);
                    } else if (!empty($_lang[1])) {
                        $lang = $_lang[0];
                        $script = Helper::file("public/locale/$lang.js", false);
                        if (file_exists($script)) {
                            wp_enqueue_script('notificationx-moment-locale', Helper::file("public/locale/$lang.js", true), [], NOTIFICATIONX_VERSION, true);
                        }
                    }
                }

                wp_enqueue_style('notificationx-public');
                wp_enqueue_script('notificationx-public');
                wp_enqueue_style('dashicons');
                do_action('notificationx_scripts', $this->notificationXArr);
                wp_add_inline_style( 'notificationx-public', $custom_css );
            }
        } else {
            // @todo maybe elementor edit mode CSS. to move to top.
            // LATER
        }
    }

    public function nx_add_body_class($classes) {
        $classes[] = 'has-notificationx';
        return $classes;
    }

    private function separate_css($css) {
        $media_css = '';
        $normal_css = '';
    
        // Match @media blocks
        preg_match_all('/@media[^{]*{([^}]*{[^}]*})*[^}]*}/', $css, $media_matches);
    
        // Extract normal CSS
        $normal_css = preg_replace('/@media[^{]*{([^}]*{[^}]*})*[^}]*}/', '', $css);
    
        // Extract @media CSS
        if (!empty($media_matches[0])) {
            $media_css = implode("\n", $media_matches[0]);
        }
    
        // Clean up normal CSS (remove extra whitespace)
        $normal_css = trim($normal_css);
    
        return [
            'normal_css' => $normal_css,
            'media_css' => $media_css
        ];
    }

    public function generate_custom_css() {
        $posts     = Database::get_instance()->get_posts(Database::$table_posts, '*', ['enabled' => true] );
        $combine_css = "";
        foreach ($posts as $post) {
            if( !empty( $post['data']['add_custom_css'] ) && !empty( $post['nx_id'] ) ) {
                $separatedCss = $this->separate_css($post['data']['add_custom_css']);
                if( !empty( $post['data']['source'] ) && $post['data']['source'] == 'press_bar' ) {
                    $combine_css .= "{$separatedCss['normal_css']} {$separatedCss['media_css']} ";
                } else if( !empty( $post['data']['source'] ) && $post['data']['source'] == 'gdpr_notification' ) {
                    $combine_css .= "{$separatedCss['normal_css']} {$separatedCss['media_css']} ";
                } 
                else {
                    $combine_css .= "{$separatedCss['normal_css']} {$separatedCss['media_css']} ";
                }
            }
        }
        return $combine_css;
    }

    public function footer_scripts() {
        if (!empty($this->notificationXArr['total']) && $this->notificationXArr['total'] > 0) {
            $this->notificationXArr = apply_filters('nx_frontend_localize_data', $this->notificationXArr);
            ?>
            <script data-no-optimize="1">
                (function() {
                    window.notificationXArr = window.notificationXArr || [];
                    window.notificationXArr.push(<?php echo json_encode($this->notificationXArr); ?>);
                })();
            </script>
            <?php
        }
    }

    // @todo deprecated. use get_localize_data instead
    public function localizeScripts() {
        return [];
    }

    public function get_localize_data($data) {
        $data['rest']          = REST::get_instance()->rest_data(false);
        $data['assets']        = self::ASSET_URL;
        $data['is_pro']        = false;
        $data['gmt_offset']    = get_option('gmt_offset');
        $data['lang']          = get_locale();
        $data['common_assets'] = NOTIFICATIONX_COMMON_URL;
        $data['extra']         = [
            'is_singular' => is_singular(),
            'query'       => $GLOBALS['wp_query']->query,
            'queried_id'  => get_queried_object_id(),
            'pid'         => !empty($GLOBALS['post']->ID) ? $GLOBALS['post']->ID : 0,
        ];
        $data['localeData'] = load_script_textdomain('notificationx-public', 'notificationx');
        return $data;
    }

    public function get_notifications_data($params) {
        $_params = $params;
        $result  = [
            'global'    => [],
            'active'    => [],
            'pressbar'  => [],
            'gdpr'      => [],
            'shortcode' => [],
        ];
        if (!empty($_params['all_active'])) {
            $params = $this->get_notifications_ids();
        }
        $params    = wp_parse_args(
            $params,
            [
                'global'           => [],
                'active'           => [],
                'pressbar'         => [],
                'gdpr'             => [],
                'shortcode'        => [],
                'inline_shortcode' => false,
            ]
        );
        $global    = $params['global'];
        $active    = $params['active'];
        $pressbar  = $params['pressbar'];
        $gdpr      = $params['gdpr'];
        $shortcode = $params['shortcode'];
        $all       = array_merge($global, $active, $shortcode);
        $_defaults = array(
            'none'            => '',
            'name'            => __('Someone', 'notificationx'),
            'first_name'      => __('Someone', 'notificationx'),
            'last_name'       => __('Someone', 'notificationx'),
            'anonymous_title' => __('Anonymous Title', 'notificationx'),
            'sometime'        => __('Some time ago', 'notificationx'),
        );

        // foreach (['global', 'active'] as $key => $type) {
        // foreach ($params[$type] as $id) {
        // $result[$type][$id] = [];
        // }
        // }

        $device = isset($params['deviceType']) && !empty($params['deviceType']) ? $params['deviceType'] : '';
        if (!empty($all)) {
            $notifications = $this->get_notifications($all, $device);
            $entries       = $this->get_entries($all, $notifications, $params);

            foreach ($entries as $entry) {
                $nx_id    = $entry['nx_id'];
                $settings = $notifications[$nx_id];

                // check if notification is enabled or not.
                if (!$settings['enabled']) {
                    continue;
                }

                $type   = $settings['type'];
                $source = $settings['source'];

                if (!empty($entry['timestamp'])) {
                    $timestamp    = $entry['timestamp'];
                    $display_from = !empty($settings['display_from']) ? $settings['display_from'] : 2;
                    $display_from = Helper::generate_time_string($settings);
                    if (!is_numeric($timestamp)) {
                        $entry['timestamp'] = $timestamp = strtotime($timestamp);
                    }
                    if ($timestamp && $display_from > $timestamp) {
                        if (apply_filters("nx_entry_display_$source", true, $entry, $settings)) {
                            continue;
                        }
                    }
                }

                $defaults = apply_filters("nx_fallback_data_$source", $_defaults, $entry, $settings);
                $defaults = apply_filters('nx_fallback_data', $defaults, $entry, $settings);

                $entry               = $this->apply_defaults($entry, $defaults);
                $entry['image_data'] = $this->get_image_url($entry, $settings);
                if (!empty($entry['title'])) {
                    $entry['title'] = strip_tags(html_entity_decode($entry['title']));
                }

                $entry = apply_filters("nx_filtered_entry_$type", $entry, $settings);
                $entry = apply_filters("nx_filtered_entry_$source", $entry, $settings);
                $entry = apply_filters('nx_filtered_entry', $entry, $settings);
                $entry = $this->link_url($entry, $settings, $params);

                // @todo shortcode
                // @todo check if the current page have shortcode.
                if (in_array($nx_id, $shortcode)) {
                    $position             = $settings['position'];
                    $settings['position'] = "notificationx-shortcode-$nx_id";
                    if (empty($result['shortcode'][$nx_id]['post'])) {
                        $result['shortcode'][$nx_id]['post'] = $settings;
                    }
                    $result['shortcode'][$nx_id]['entries'][] = $entry;
                    $settings['position']                       = $position;
                    if ($settings['show_on'] === 'only_shortcode' || 'inline' === $settings['type'] || 'woocommerce_sales_inline' == $settings['source']) {
                        continue;
                    }
                    if (empty($global) && empty($active)) {
                        continue;
                    }
                }

                if (!empty($settings['global_queue'])) {
                    if (empty($result['global'][$nx_id]['post'])) {
                        $result['global'][$nx_id]['post'] = $settings;
                    }
                    $result['global'][$nx_id]['entries'][] = $entry;
                } else {
                    if (empty($result['active'][$nx_id]['post'])) {
                        $result['active'][$nx_id]['post'] = $settings;
                    }
                    $result['active'][$nx_id]['entries'][] = $entry;
                }
            }

            foreach ($result as &$group) {
                foreach ($group as &$value) {
                    $value['entries'] = apply_filters("nx_filtered_data_{$value['post']['type']}", $value['entries'], $value['post'], $params);
                    $value['entries'] = apply_filters("nx_filtered_data_{$value['post']['source']}", $value['entries'], $value['post'], $params);
                    $value['entries'] = apply_filters('nx_filtered_data', $value['entries'], $value['post'], $params);
                    $value['post']    = apply_filters('nx_filtered_post', $value['post'], $params);
                }
            }
            $result = apply_filters('nx_filtered_notice', $result, $params);
        }

        if (!empty($pressbar)) {
            $notifications = $this->get_notifications($pressbar, $device);
            foreach ($notifications as $key => $settings) {
                $_nx_id            = $settings['nx_id'];
                // check if position is bottom_left then modify it to top 
                if($settings['position'] == 'bottom_left'){
                    $settings['position'] = 'top';
                }
                $elementor_post_id = isset($settings['elementor_id']) ? $settings['elementor_id'] : '';
                if ($elementor_post_id == '' || get_post_status($elementor_post_id) !== 'publish' | !class_exists('\Elementor\Plugin')) {
                    $settings['elementor_id'] = false;
                }
                if ( ( !empty( $_params['all_active']) && $elementor_post_id ) || !$settings['enabled'] ) {
                    continue;
                }

                // $settings['button_url'] = apply_filters("nx_notification_link_{$settings['source']}", $settings['button_url'], $settings);
                $settings['button_url'] = apply_filters('nx_notification_link', $settings['button_url'], $settings);
                if (!empty($settings['button_url']) && strpos($settings['button_url'], '//') === false && strpos($settings['button_url'], './') === false) {
                    $settings['button_url'] = "//{$settings['button_url']}";
                }
                $bar_content = $this->get_bar_content($settings, false, $params);
                if ($bar_content !== '&nbsp;' || !empty($settings['enable_countdown'])) {
                    $settings = apply_filters('nx_filtered_post', $settings, $params);
                    $result['pressbar'][$_nx_id]['post']    = $settings;
                    $result['pressbar'][$_nx_id]['content'] = $bar_content;
                }

                unset($_nx_id);
            }
        }

        if (!empty($gdpr)) {
            $notifications = $this->get_notifications($gdpr);
            foreach ($notifications as $key => $settings) {
                $_nx_id            = $settings['nx_id'];
                if (!empty($_params['all_active'])) {
                    continue;
                }

                $settings = apply_filters('nx_filtered_post', $settings, $params);

                $result['gdpr'][$_nx_id]['post']    = $settings;
                $result['gdpr'][$_nx_id]['content'] = "";
                unset($_nx_id);
            }
        }

        $result['settings'] = $this->get_settings();
        return $result;
    }

    public function get_settings(){

        $branding_url       = apply_filters('nx_branding_url', NOTIFICATIONX_PLUGIN_URL . '?utm_source=' . esc_url(home_url()) . '&utm_medium=notificationx');
        $settings = [
            'disable_powered_by' => Settings::get_instance()->get('settings.disable_powered_by'),
            'affiliate_link'     => $branding_url,
            'enable_analytics'   => Settings::get_instance()->get('settings.enable_analytics', true),
            'analytics_from'     => Settings::get_instance()->get('settings.analytics_from'),
            'delay_before'       => Settings::get_instance()->get('settings.delay_before', 5),
            'display_for'        => Settings::get_instance()->get('settings.display_for', 5),
            'delay_between'      => Settings::get_instance()->get('settings.delay_between', 5),
            'loop'               => Settings::get_instance()->get('settings.loop', 5),
            'random'             => Settings::get_instance()->get('settings.random', 5),
            'analytics_nonce'    => wp_create_nonce('analytics_nonce'),
        ];
        return $settings;
    }

    public function get_notifications_ids($return_posts = false, $args = []) {
        $args = wp_parse_args($args, [
            'enabled'    => true,
            'updated_at' => ['<=', Helper::mysql_time()],
            // 'global_queue' => true,
        ]);
        $notifications = PostType::get_instance()->get_posts($args);

        $active_notifications = $global_notifications = $bar_notifications = $gdpr_notification = array();

        foreach ($notifications as $key => $settings) {
            // $settings        = NotificationX::get_instance()->normalize_post($post);

            // IF PRESSBAR TIME RE_CONFIG THEN REMOVE COOKIE
            // if( $settings['source'] == 'press_bar'){
            // if( $_settings->enable_countdown && ( Helper::current_timestamp($_settings->countdown_start_date) < time() || Helper::current_timestamp($_settings->countdown_end_date) > time() ) ) {
            // unset( $_COOKIE["notificationx_{$settings['nx_id']}"] );
            // \setcookie("notificationx_{$settings['nx_id']}", null);
            // }
            // }

            /**
             * Check if it's a pro source and pro plugin is disabled.
             */
            if(!NotificationX::is_pro()){
                $ext = ExtensionFactory::get_instance()->get($settings['source']);
                if($ext && $ext->is_pro){
                    continue;
                }
            }

            $countdown_rand = !empty($settings['countdown_rand']) ? "-{$settings['countdown_rand']}" : '';

            if (!empty($_COOKIE["notificationx_{$settings['nx_id']}$countdown_rand"]) && $_COOKIE["notificationx_{$settings['nx_id']}$countdown_rand"] == true) {
                unset($notifications[$key]);
                continue;
            }

            if($this->is_logged_in($settings['show_on_display'])){
                continue;
            }

            $locations  = isset($settings['all_locations']) ? $settings['all_locations'] : [];
            $custom_ids = isset($settings['custom_ids']) ? $settings['custom_ids'] : [];
            $taxonomy_ids = isset($settings['taxonomy_ids']) ? $settings['taxonomy_ids'] : [];

            if($this->check_show_on($locations, $custom_ids, $settings['show_on'], $taxonomy_ids)){
                continue;
            }

            /**
             * Check for hiding in mobile device
             */
            // if ($settings['hide_on_mobile'] && wp_is_mobile()) {
            //     continue;
            // }

            $show_on_exclude = apply_filters('nx_show_on_exclude', false, $settings);
            if ($show_on_exclude) {
                continue;
            }

            // excluding pressBar on rest request. PressBar is printed directly in head.
            // if((empty($args['source']) || $args['source'] !== 'press_bar') && $settings['source'] == 'press_bar'){
            // continue;
            // }

            $active_global_queue = boolval($settings['global_queue']);
            if ($settings['source'] == 'press_bar') {
                // if(
                // !$_settings->elementor_id &&
                // $_settings->enable_countdown &&
                // !$_settings->evergreen_timer &&
                // (
                // strtotime($_settings->countdown_start_date) > time() ||
                // strtotime($_settings->countdown_end_date) < time()
                // )
                // ){
                // continue;
                // }

                $bar_notifications[] = $return_posts ? $settings : $settings['nx_id'];
                if (!empty($settings['elementor_id']) && class_exists('\Elementor\Plugin')) {
                    // @todo Find a function to only load css instead of building content.
                    \Elementor\Plugin::$instance->frontend->get_builder_content($settings['elementor_id'], false);
                }
            } elseif($settings['source'] == 'gdpr_notification') {
                $gdpr_notification[] = $return_posts ? $settings : $settings['nx_id'];
            } elseif ($active_global_queue && NotificationX::is_pro()) {
                $global_notifications[] = $return_posts ? $settings : $settings['nx_id'];
            } else {
                $active_notifications[] = $return_posts ? $settings : $settings['nx_id'];
            }

            unset($notifications[$key]);
        }
        // do_action('nx_active_notificationx', $notifications);

        // @todo maybe combine two hooks.

        return apply_filters(
            'get_notifications_ids',
            [
                'global'   => $global_notifications,
                'active'   => $active_notifications,
                'pressbar' => $bar_notifications,
                'gdpr'     => $gdpr_notification,
                'total'    => (count($global_notifications) + count($active_notifications) + count($bar_notifications) + count($gdpr_notification)),
            ],
            $notifications
        );
    }

    public function is_logged_in($show_on_display){
        $logged_in       = is_user_logged_in();

        if (($logged_in && 'logged_out_user' == $show_on_display) || (!$logged_in && 'logged_in_user' == $show_on_display)) {
            return true;
        }
        return false;
    }

    /**
     * @todo filter is not extensive enough.
     */
    public function check_show_on($locations, $custom_ids, $show_on, $taxonomy_ids = ''){
        $check_location = false;

        if ($locations == 'is_custom' || is_array($locations) && in_array('is_custom', $locations)) {
            $custom_ids = !empty($custom_ids) ? $custom_ids : [];
        }
        if (!empty($locations)) {
            // @todo need to pass url.
            $check_location = Locations::get_instance()->check_location($locations, $custom_ids, $taxonomy_ids);
        }

        $check_location = apply_filters('nx_check_location', $check_location, $custom_ids, $show_on);

        if ($show_on == 'on_selected') {
            // show if the page is on selected
            if (!$check_location) {
                return true;
            }
        } elseif ($show_on == 'hide_on_selected') {
            // hide if the page is on selected
            if ($check_location) {
                return true;
            }
        } elseif ($show_on === 'only_shortcode') {
            return true;
        }
        return false;
    }

    public function get_notifications($ids, $device = '') {
        $results       = [];
        $notifications = PostType::get_instance()->get_posts_by_ids($ids);

        foreach ($notifications as $key => $value) {
            /**
             * Check for hiding in mobile device
             */
            if (empty($value['hide_on_mobile']) && $device === 'mobile') {
                continue;
            } 

            /**
             * Check for hiding in tablet device
             */
            if (empty($value['hide_on_tab']) && $device === 'tablet') {
                continue;
            }

            /**
             * Check for hiding in desktop device
             */
            if (empty($value['hide_on_desktop']) && $device === 'desktop') {
                continue;
            }

            /**
             * Check if it's a pro source and pro plugin is disabled.
             */
            if(!NotificationX::is_pro()){
                $ext = ExtensionFactory::get_instance()->get($value['source']);
                if($ext && $ext->is_pro){
                    continue;
                }
            }

            $results[$value['nx_id']] = $value;
        }
        return $results;
    }

    public function get_entries($ids, $notifications,$params) {
        $entries = [];
        if (!empty($ids) && is_array($ids)) {
            $query = [];
            foreach ($ids as $id) {
                if (!empty($notifications[$id])) {
                    $post         = $notifications[$id];
                    $global_query =  " nx_id = " . absint($id) . " AND source = '" . esc_sql($post['source']) . "'";
                    $_q = apply_filters("nx_get_entries_query_part_{$notifications[$id]['source']}",$global_query, $notifications[$id], $params );
                    $query[$id] = " (" . $_q . ")";
                }
            }
            if (!empty($query)) {
                $entries = Entries::get_instance()->get_entries('WHERE' . implode(' OR ', $query));
                foreach ($entries as $key => $value) {
                    if (!empty($value['data'])) {
                        $entries[$key] = array_merge($value, $value['data']);
                        unset($entries[$key]['data']);
                    }
                }
            }
        }
        if (!is_array($entries)) {
            $entries = [];
        }
        $entries = apply_filters('nx_frontend_get_entries', $entries, $ids, $notifications,$params);
        return $entries;
    }

    /**
     * This function is responsible for make ready the link for notifications.
     *
     * @param array $data
     * @return void
     */
    public static function link_url($entry, $post, $params = []) {
        if (empty($entry)) {
            return false;
        }
        $link = isset($entry['link']) ? $entry['link'] : '';
        // removing link if link type is none.
        if (empty($post['link_type']) || $post['link_type'] === 'none') {
            $link = '';
        }

        $link          = apply_filters("nx_notification_link_{$post['source']}", $link, $post, $entry, $params);
        $entry['link'] = apply_filters('nx_notification_link', $link, $post, $entry, $params);
        return $entry;
    }

    /**
     * This function is responsible for getting the image url
     * using Product ID or from default image settings.
     *
     * @param array $data
     * @param array $settings
     * @return array of image data, contains url and title as alt text
     */
    public function get_image_url($data, $settings) {
        $source     = $settings['source'];
        $alt_title  = isset($data['name']) ? $data['name'] : '';
        $image_type = isset($settings['show_notification_image']) ? $settings['show_notification_image'] : false;
        if (empty($alt_title)) {
            $alt_title = isset($data['title']) ? $data['title'] : '';
        }
        $image_data = [
            'url' => '',
            'alt' => $alt_title,
        ];

        if ($settings['show_default_image']) {
            if (!empty($settings['image_url']['url'])) {
                $image_size = (string) Settings::get_instance()->get('settings.notification_image_size', '100_100');
                $image_size = explode('_', $image_size);
                $width      = 100;
                $height     = 100;
                if( !empty( $image_size[0] ) && !empty( $image_size[1] ) ) {
                    $width  = $image_size[0];
                    $height = $image_size[1];
                }
                $image             = wp_get_attachment_image_src($settings['image_url']['id'], [$width, $height], true);
                $image_data['url'] = $image[0];
            } else {
                $default_avatar    = $settings['default_avatar'];
                $image_data['url'] = NOTIFICATIONX_PUBLIC_URL . 'image/icons/' . $default_avatar;
            }
        } else {
            if ($image_type === 'gravatar') {
                $_data = array_change_key_case($data);
                if (isset($_data['email'])) {
                    $image_data['url'] = get_avatar_url($_data['email'], ['size' => '100']);
                }
            }
        }

        $image_data['classes'] = $image_type;
        $image_data            = apply_filters("nx_notification_image_$source", $image_data, $data, $settings);
        $image_data            = apply_filters('nx_notification_image', $image_data, $data, $settings);

        if (!empty($image_data['url'])) {
            return $image_data;
        }

        return false;
    }

    public function apply_defaults($entry, $defaults) {

        foreach ($defaults as $key => $value) {
            // @todo mukul remove  `|| empty(trim($entry[$key]))`
            if (empty($entry[$key]) || (is_string($entry[$key]) && empty(trim($entry[$key])))) {
                $entry[$key] = $value;
            }
        }

        return $entry;
    }

    public function fallback_data($data, $saved_data, $settings) {
        if ((empty($saved_data['name']) || $data['name'] == __('Someone', 'notificationx')) && isset($saved_data['first_name']) || isset($saved_data['last_name'])) {
            $first_name   = isset($saved_data['first_name']) ? $saved_data['first_name'] : '';
            $last_name    = isset($saved_data['last_name']) ? $saved_data['last_name'] : '';
            $data['name'] = Helper::name($first_name, $last_name);
        }
        if (!empty($saved_data['name']) && empty($saved_data['first_name']) && empty($saved_data['last_name'])) {
            $data['first_name'] = $saved_data['name'];
        }
        $data['title'] = isset($saved_data['post_title']) ? $saved_data['post_title'] : (isset($data['title']) ? $data['title'] : '');
        return $data;
    }

    /**
     * Add NotificationX in Footer
     *
     * @return void
     */
    public function filtered_data($entries, $post, $params) {
        if (is_array($entries) && (!defined('NX_DEBUG') || !NX_DEBUG)) {
            if (!empty($post['display_last']) && !in_array($post['source'], ['google', 'woo_inline', 'edd_inline', 'tutor_inline', 'learndash_inline', 'google_reviews', 'youtube','woocommerce_sales_inline','fluentcart_inline'])) {
                $entries = array_slice($entries, 0, $post['display_last']);
            }
            foreach ($entries as $index => $entry) {
                $_entry = apply_filters("nx_frontend_keep_entry_{$post['source']}", [
                    'nx_id'      => $entry['nx_id'],
                    'timestamp'  => isset($entry['timestamp']) ? $entry['timestamp'] : Helper::current_timestamp($entry['updated_at']),
                    'updated_at' => isset( $entry['updated_at'] ) ? $entry['updated_at'] : '',
                    'image_data' => $entry['image_data'],
                    'link'       => $entry['link'],
                ], $entry, $post, $params);
                if (!empty($params['inline_shortcode']) && isset($entry['product_id'])) {
                    $_entry['product_id'] = $entry['product_id'];
                }

                $template_arr = array_values($post['notification-template']);
                if ($post['template_adv']) {
                    $adv_template = $post['advanced_template'];
                    $pattern = "/{{(.+?)}}/i";
                    if (preg_match_all($pattern, $adv_template, $matches)) {
                        $template_arr = $matches[1];
                    }
                }
                if (is_array($template_arr)) {
                    foreach ($template_arr as $entry_key) {
                        $_entry_key = $entry_key;
                        if ($entry_key == 'tag_siteview' || $entry_key == 'tag_realtime_siteview') {
                            $entry_key = 'views';
                        } elseif ($entry_key == 'ga_title' || $entry_key == 'ga_page_title') {
                            $entry_key = 'title';
                        } elseif (strpos($entry_key, 'tag_product_') === 0) {
                            $entry_key = str_replace('tag_product_', '', $entry_key);
                        } elseif (strpos($entry_key, 'tag_') === 0) {
                            $entry_key = str_replace('tag_', '', $entry_key);
                        } elseif (strpos($entry_key, 'product_') === 0) {
                            $entry_key = str_replace('product_', '', $entry_key);
                        }

                        if (isset($entry[$entry_key])) {
                            $_entry[$entry_key] = $entry[$entry_key];
                        }
                        if (isset($entry[$_entry_key])) {
                            $_entry[$_entry_key] = $entry[$_entry_key];
                        }
                    }
                    $entries[$index] = $_entry;
                }
            }
        }
        return $entries;
    }

    /**
     * Remove unnecessary props from post in frontend.
     *
     * @return void
     */
    public function filtered_post($post, $params = null) {
        if (is_array($post) && empty($params['inline_shortcode']) && (!defined('NX_DEBUG') || !NX_DEBUG)) {
            $ignore_props = [
                'all_locations',
                'category_list',
                'combine_multiorder_text',
                'content_trim_length',
                'convertkit_form',
                'currentTab',
                'custom_contents',
                'custom_ids',
                'default_avatar',
                'elementor_edit_link',
                'enabled',
                'exclude_categories',
                'exclude_products',
                'form_list',
                'freemius_item_type',
                'freemius_plugins',
                'freemius_themes',
                'give_form_list',
                'give_forms_control',
                'image_url',
                'inline_location',
                'is_confirmed',
                'is_elementor',
                'is_inline',
                'ld_course_list',
                'ld_product_control',
                'mailchimp_list',
                'max_stock',
                'nx-bar_with_elementor',
                'nx-bar_with_elementor-remove',
                'nx-bar_with_elementor_install',
                'order_status',
                'press_content',
                'preview',
                'product_control',
                'product_exclude_by',
                'product_list',
                'rest_route',
                'show_default_image',
                'show_notification_image',
                'show_on',
                'show_on_display',
                'source_error',
                'utm_campaign',
                'utm_medium',
                'utm_source',
                'wp_reviews_product_type',
                'wp_reviews_slug',
                'wp_stats_product_type',
                'wp_stats_slug',
                '_locale',
                '__product_list',
                '__form_list',
                '__ld_course_list',
                '__give_form_list',
            ];
            foreach ($ignore_props as $prop) {
                if (isset($post[$prop])) {
                    unset($post[$prop]);
                }
            }
        }
        if (isset($post['template_adv'], $post['advanced_template'])) {
            $post['advanced_template'] = do_shortcode($post['advanced_template']);
        }
        if( !empty( $post['notification-template'] ) ) {
            $post['notification-template'] = array_map( 'esc_html', $post['notification-template'] );
        }
        return $post;
    }

    public function get_bar_content($settings, $suppress_filters = false, $params = []){
        $bar_content  = PressBar::get_instance()->print_bar_notice($settings);
        if(!$suppress_filters){
            $bar_content  = apply_filters("nx_filtered_data_{$settings['source']}", $bar_content, $settings, $params);
        }

        // checking if content is empty
        $_bar_content = str_replace(array("\r\n", "\n", "\r"), '', $bar_content);
        $_bar_content = trim(strip_tags($_bar_content));
        if (empty($_bar_content) && !empty($settings['enable_countdown'])) {
            $bar_content = '&nbsp;';
        }
        return $bar_content;
    }

}