'in'                 => _x( 'in', 'in categories fe. in Books > Crime stories', 'ajax-search-for-woocommerce' ),
            'read_more'          => __( 'continue reading', 'ajax-search-for-woocommerce' ),
            'no_results'         => $noResults,
            'no_results_default' => __( 'No results', 'ajax-search-for-woocommerce' ),
            'show_more'          => $showMore,
            'show_more_details'  => $showMore,
            'search_placeholder' => DGWT_WCAS()->settings->getOption( 'search_placeholder', __( 'Search for products...', 'ajax-search-for-woocommerce' ) ),
            'submit'             => DGWT_WCAS()->settings->getOption( 'search_submit_text', '' ),
            'search_hist'        => __( 'Your search history', 'ajax-search-for-woocommerce' ),
            'search_hist_clear'  => __( 'Clear', 'ajax-search-for-woocommerce' ),
        ) );
    }
    
    /**
     * Get labels
     *
     * @param string $key
     *
     * @return string
     */
    public static function getLabel( $key )
    {
        $label = '';
        $labels = self::getLabels();
        if ( array_key_exists( $key, $labels ) ) {
            $label = $labels[$key];
        }
        return $label;
    }
    
    /**
     * Remove all HTML tags including <script> and <style> and shortcodes
     *
     * @param string $string
     * @param string $allowed
     * @param bool $removeBreaks
     *
     * @return string
     */
    public static function stripAllTags( $string, $allowableTags = '', $removeBreaks = false )
    {
        $string = strip_shortcodes( $string );
        $string = preg_replace( '@<(script|style)[^>]*?>.*?</\\1>@si', '', $string );
        $string = strip_tags( $string, $allowableTags );
        if ( $removeBreaks ) {
            $string = preg_replace( '/[\\r\\n\\t ]+/', ' ', $string );
        }
        return trim( $string );
    }
    
    /**
     * Repair HTML. Close unclosed tags.
     *
     * @param $html
     *
     * @return string
     */
    public static function closeTags( $html )
    {
        preg_match_all( '#<(?!meta|img|br|hr|input\\b)\\b([a-z]+)(?: .*)?(?<![/|/ ])>#iU', $html, $result );
        $openedTags = $result[1];
        preg_match_all( '#</([a-z]+)>#iU', $html, $result );
        $closedtags = $result[1];
        $lenOpened = count( $openedTags );
        if ( count( $closedtags ) == $lenOpened ) {
            return $html;
        }
        $openedTags = array_reverse( $openedTags );
        for ( $i = 0 ;  $i < $lenOpened ;  $i++ ) {
            
            if ( !in_array( $openedTags[$i], $closedtags ) ) {
                $html .= '</' . $openedTags[$i] . '>';
            } else {
                unset( $closedtags[array_search( $openedTags[$i], $closedtags )] );
            }
        
        }
        return $html;
    }
    
    /**
     * Check if we should override default search query
     *
     * @param \WP_Query $query The WP_Query instance
     *
     * @return bool
     */
    public static function isSearchQuery( $query )
    {
        $enabled = true;
        if ( !(!empty($query) && is_object( $query ) && is_a( $query, 'WP_Query' )) ) {
            return false;
        }
        if ( !$query->is_main_query() || isset( $query->query_vars['s'] ) && !isset( $_GET['dgwt_wcas'] ) || !isset( $query->query_vars['s'] ) || !$query->is_search() || $query->get( 'post_type' ) && is_string( $query->get( 'post_type' ) ) && $query->get( 'post_type' ) !== 'product' ) {
            $enabled = false;
        }
        $enabled = apply_filters( 'dgwt/wcas/helpers/is_search_query', $enabled, $query );
        return $enabled;
    }
    
    /**
     * Check if this is a product search page
     *
     * @return bool
     */
    public static function isProductSearchPage()
    {
        if ( isset( $_GET['dgwt_wcas'] ) && isset( $_GET['post_type'] ) && $_GET['post_type'] === 'product' && isset( $_GET['s'] ) ) {
            return true;
        }
        return false;
    }
    
    /**
     * Restore the search phrase so that it can be used in the template.
     *
     * @param \WP_Post[] $posts Array of post objects.
     * @param \WP_Query $query The WP_Query instance (passed by reference).
     *
     * @return mixed
     */
    public static function rollbackSearchPhrase( $posts, $query )
    {
        if ( !$query->get( 'dgwt_wcas', false ) ) {
            return $posts;
        }
        $query->set( 's', wp_unslash( $query->get( 'dgwt_wcas', '' ) ) );
        return $posts;
    }
    
    /**
     * Clear default search query if our engine is active
     *
     * @param string $search Search SQL for WHERE clause.
     * @param \WP_Query $query The current WP_Query object.
     *
     * @return string
     */
    public static function clearSearchQuery( $search, $query )
    {
        if ( !$query->get( 'dgwt_wcas', false ) ) {
            return $search;
        }
        return '';
    }
    
    /**
     * Get formatted search layout settings
     *
     * @return object
     */
    public static function getLayoutSettings()
    {
        $layoutBreakpoint = DGWT_WCAS()->settings->getOption( 'mobile_breakpoint', 992 );
        $layoutBreakpoint = apply_filters( 'dgwt/wcas/scripts/mobile_breakpoint', $layoutBreakpoint );
        // deprecated
        $mobileOverlayBreakpoint = DGWT_WCAS()->settings->getOption( 'mobile_overlay_breakpoint', 992 );
        $layout = array(
            'style'                     => DGWT_WCAS()->settings->getOption( 'search_style', 'solaris' ),
            'icon'                      => 'magnifier-thin',
            'layout'                    => DGWT_WCAS()->settings->getOption( 'search_layout', 'classic' ),
            'layout_breakpoint'         => apply_filters( 'dgwt/wcas/scripts/layout_breakpoint', $layoutBreakpoint ),
            'mobile_overlay'            => ( DGWT_WCAS()->settings->getOption( 'enable_mobile_overlay' ) === 'on' ? true : false ),
            'mobile_overlay_breakpoint' => apply_filters( 'dgwt/wcas/scripts/mobile_overlay_breakpoint', $mobileOverlayBreakpoint ),
            'mobile_overlay_wrapper'    => apply_filters( 'dgwt/wcas/scripts/mobile_overlay_wrapper', 'body' ),
            'darken_background'         => ( DGWT_WCAS()->settings->getOption( 'darken_background', 'off' ) === 'on' ? true : false ),
            'icon_color'                => DGWT_WCAS()->settings->getOption( 'search_icon_color' ),
        );
        if ( $layout['style'] === 'pirx' ) {
            $layout['icon'] = 'magnifier-pirx';
        }
        return (object) $layout;
    }
    
    /**
     * Get frontend scripts settings
     *
     * @return array
     */
    public static function getScriptsSettings()
    {
        $layout = self::getLayoutSettings();
        // Localize
        $localize = array(
            'labels'                          => self::getLabels(),
            'ajax_search_endpoint'            => self::getEndpointUrl( 'search' ),
            'ajax_details_endpoint'           => self::getEndpointUrl( 'details' ),
            'ajax_prices_endpoint'            => self::getEndpointUrl( 'prices' ),
            'action_search'                   => DGWT_WCAS_SEARCH_ACTION,
            'action_result_details'           => DGWT_WCAS_RESULT_DETAILS_ACTION,
            'action_get_prices'               => DGWT_WCAS_GET_PRICES_ACTION,
            'min_chars'                       => 3,
            'width'                           => 'auto',
            'show_details_panel'              => false,
            'show_images'                     => false,
            'show_price'                      => false,
            'show_desc'                       => false,
            'show_sale_badge'                 => false,
            'show_featured_badge'             => false,
            'dynamic_prices'                  => false,
            'is_rtl'                          => ( is_rtl() == true ? true : false ),
            'show_preloader'                  => false,
            'show_headings'                   => false,
            'preloader_url'                   => '',
            'taxonomy_brands'                 => '',
            'img_url'                         => DGWT_WCAS_URL . 'assets/img/',
            'is_premium'                      => dgoraAsfwFs()->is_premium(),
            'layout_breakpoint'               => $layout->layout_breakpoint,
            'mobile_overlay_breakpoint'       => $layout->mobile_overlay_breakpoint,
            'mobile_overlay_wrapper'          => $layout->mobile_overlay_wrapper,
            'mobile_overlay_delay'            => apply_filters( 'dgwt/wcas/scripts/overlay_delay_ms', 0 ),
            'debounce_wait_ms'                => apply_filters( 'dgwt/wcas/scripts/debounce_wait_ms', 400 ),
            'send_ga_events'                  => apply_filters( 'dgwt/wcas/scripts/send_ga_events', true ),
            'enable_ga_site_search_module'    => apply_filters( 'dgwt/wcas/scripts/enable_ga_site_search_module', false ),
            'magnifier_icon'                  => self::getMagnifierIco( '' ),
            'magnifier_icon_pirx'             => self::getMagnifierIco( '', 'magnifier-pirx' ),
            'history_icon'                    => self::getIcon( 'history' ),
            'close_icon'                      => self::getIcon( 'close' ),
            'back_icon'                       => self::getIcon( 'arrow-left' ),
            'preloader_icon'                  => self::getIcon( 'preloader' ),
            'voice_search_inactive_icon'      => self::getIcon( ( $layout->style === 'pirx' ? 'voice-search-inactive-pirx' : 'voice-search-inactive' ), 'dgwt-wcas-voice-search-mic-inactive' ),
            'voice_search_active_icon'        => self::getIcon( ( $layout->style === 'pirx' ? 'voice-search-active-pirx' : 'voice-search-active' ), 'dgwt-wcas-voice-search-mic-active' ),
            'voice_search_disabled_icon'      => self::getIcon( ( $layout->style === 'pirx' ? 'voice-search-disabled-pirx' : 'voice-search-disabled' ), 'dgwt-wcas-voice-search-mic-disabled' ),
            'custom_params'                   => (object) apply_filters( 'dgwt/wcas/scripts/custom_params', array() ),
            'convert_html'                    => true,
            'suggestions_wrapper'             => apply_filters( 'dgwt/wcas/scripts/suggestions_wrapper', 'body' ),
            'show_product_vendor'             => dgoraAsfwFs()->is_premium() && class_exists( 'DgoraWcas\\Integrations\\Marketplace\\Marketplace' ) && DGWT_WCAS()->marketplace->showProductVendor(),
            'disable_hits'                    => apply_filters( 'dgwt/wcas/scripts/disable_hits', false ),
            'disable_submit'                  => apply_filters( 'dgwt/wcas/scripts/disable_submit', false ),
            'fixer'                           => apply_filters( 'dgwt/wcas/scripts/fixer', array(
            'broken_search_ui'                  => true,
            'broken_search_ui_ajax'             => true,
            'broken_search_ui_hard'             => false,
            'broken_search_elementor_popups'    => true,
            'broken_search_jet_mobile_menu'     => true,
            'broken_search_browsers_back_arrow' => true,
            'force_refresh_checkout'            => true,
        ) ),
            'voice_search_enabled'            => defined( 'DGWT_WCAS_VOICE_SEARCH_ENABLE' ) && DGWT_WCAS_VOICE_SEARCH_ENABLE,
            'voice_search_lang'               => apply_filters( 'dgwt/wcas/scripts/voice_search_lang', get_bloginfo( 'language' ) ),
            'show_recently_searched_products' => false,
            'show_recently_searched_phrases'  => false,
        );
        // User search history
        
        if ( DGWT_WCAS()->settings->getOption( 'show_user_history' ) === 'on' ) {
            $localize['show_recently_searched_products'] = apply_filters( 'dgwt/wcas/scripts/show_recently_searched_products', true );
            $localize['show_recently_searched_phrases'] = apply_filters( 'dgwt/wcas/scripts/show_recently_searched_phrases', true );
        }
        
        if ( Multilingual::isMultilingual() ) {
            $localize['current_lang'] = Multilingual::getCurrentLanguage();
        }
        // Min characters
        $min_chars = DGWT_WCAS()->settings->getOption( 'min_chars' );
        if ( !empty($min_chars) && is_numeric( $min_chars ) ) {
            $localize['min_chars'] = absint( $min_chars );
        }
        $sug_width = DGWT_WCAS()->settings->getOption( 'sug_width' );
        if ( !empty($sug_width) && is_numeric( $sug_width ) && $sug_width > 100 ) {
            $localize['sug_width'] = absint( $sug_width );
        }
        // Show/hide Details panel
        if ( DGWT_WCAS()->settings->getOption( 'show_details_box' ) === 'on' ) {
            $localize['show_details_panel'] = true;
        }
        // Show/hide images
        if ( DGWT_WCAS()->settings->getOption( 'show_product_image' ) === 'on' ) {
            $localize['show_images'] = true;
        }
        // Show/hide price
        if ( DGWT_WCAS()->settings->getOption( 'show_product_price' ) === 'on' ) {
            $localize['show_price'] = true;
        }
        // Show/hide description
        if ( DGWT_WCAS()->settings->getOption( 'show_product_desc' ) === 'on' ) {
            $localize['show_desc'] = true;
        }
        // Show/hide description
        if ( DGWT_WCAS()->settings->getOption( 'show_product_sku' ) === 'on' ) {
            $localize['show_sku'] = true;
        }
        // Show/hide sale badge
        if ( DGWT_WCAS()->settings->getOption( 'show_sale_badge' ) === 'on' ) {
            $localize['show_sale_badge'] = true;
        }
        // Show/hide featured badge
        if ( DGWT_WCAS()->settings->getOption( 'show_featured_badge' ) === 'on' ) {
            $localize['show_featured_badge'] = true;
        }
        // Set preloader
        
        if ( DGWT_WCAS()->settings->getOption( 'show_preloader' ) === 'on' ) {
            $localize['show_preloader'] = true;
            $localize['preloader_url'] = esc_url( trim( DGWT_WCAS()->settings->getOption( 'preloader_url' ) ) );
        }
        
        // Show/hide autocomplete headings
        if ( DGWT_WCAS()->settings->getOption( 'show_grouped_results' ) === 'on' ) {
            $localize['show_headings'] = true;
        }
        return apply_filters( 'dgwt/wcas/scripts/localize', $localize );
    }
    
    /**
     * Get endpoint URL
     *
     * @param string $type
     *
     * @return string
     */
    public static function getEndpointUrl( $type = '' )
    {
        $url = '';
        if ( !in_array( $type, array( 'search', 'details', 'prices' ) ) ) {
            return $url;
        }
        switch ( $type ) {
            case 'search':
                $url = \WC_AJAX::get_endpoint( DGWT_WCAS_SEARCH_ACTION );
                break;
            case 'details':
                $url = \WC_AJAX::get_endpoint( DGWT_WCAS_RESULT_DETAILS_ACTION );
                break;
            case 'prices':
                $url = \WC_AJAX::get_endpoint( DGWT_WCAS_GET_PRICES_ACTION );
                break;
            default:
                break;
        }
        return apply_filters( "dgwt/wcas/endpoint/{$type}", $url );
    }
    
    /**
     * Checking the current code is run by the object of the given class
     *
     * @param string $class_name Class name
     * @param int $backtrace_limit The number of stack frames that is tested backwards.
     *
     * @return bool
     */
    public static function is_running_inside_class( $class_name, $backtrace_limit = 10 )
    {
        if ( empty($class_name) ) {
            return false;
        }
        if ( intval( $backtrace_limit ) <= 0 ) {
            $backtrace_limit = 10;
        }
        $result = false;
        $backtrace = self::debugBacktrace( 0, $backtrace_limit );
        if ( !empty($backtrace) ) {
            foreach ( $backtrace as $item ) {
                
                if ( isset( $item['class'] ) && $item['class'] === $class_name ) {
                    $result = true;
                    break;
                }
            
            }
        }
        return $result;
    }
    
    /**
     * Checking the current code is run inside specified function
     *
     * @param string $function_name Function name
     * @param int $backtrace_limit The number of stack frames that is tested backwards.
     *
     * @return bool
     */
    public static function isRunningInsideFunction( $function_name, $backtrace_limit = 10 )
    {
        if ( empty($function_name) ) {
            return false;
        }
        if ( intval( $backtrace_limit ) <= 0 ) {
            $backtrace_limit = 10;
        }
        $result = false;
        $backtrace = self::debugBacktrace( 0, $backtrace_limit );
        if ( !empty($backtrace) ) {
            foreach ( $backtrace as $item ) {
                
                if ( isset( $item['function'] ) && $item['function'] === $function_name ) {
                    $result = true;
                    break;
                }
            
            }
        }
        return $result;
    }
    
    private static function debugBacktrace( $options, $limit )
    {
        return debug_backtrace( $options, $limit );
    }
    
    /**
     * Search products with native engine
     *
     * @param $phrase
     *
     * @return int[]
     */
    public static function searchProducts( $phrase )
    {
        $postIn = [];
        $results = DGWT_WCAS()->nativeSearch->getSearchResults( $phrase, true, 'product-ids' );
        if ( isset( $results['suggestions'] ) && is_array( $results['suggestions'] ) ) {
            $postIn = wp_list_pluck( $results['suggestions'], 'ID' );
        }
        return $postIn;
    }
    
    /**
     * Get all post types used in search
     *
     * @param string $filter 'no-products' returns post types not related to products
     *                       'only-products' returns post types related to products
     *
     * @return array
     */
    public static function getAllowedPostTypes( $filter = '' )
    {
        $types = array();
        
        if ( $filter !== 'no-products' ) {
            $types[] = 'product';
            $types[] = 'product-variation';
        }
        
        
        if ( $filter !== 'only-products' ) {
            if ( DGWT_WCAS()->settings->getOption( 'show_matching_posts' ) === 'on' ) {
                $types[] = 'post';
            }
            if ( DGWT_WCAS()->settings->getOption( 'show_matching_pages' ) === 'on' ) {
                $types[] = 'page';
            }
        }
        
        return apply_filters( 'dgwt/wcas/allowed_post_types', $types, $filter );
    }
    
    /**
     * Get Basic Auth header from dedicated constants or from current request
     *
     * @return string
     */
    public static function getBasicAuthHeader()
    {
        $authorization = '';
        
        if ( defined( 'DGWT_WCAS_BA_USERNAME' ) && defined( 'DGWT_WCAS_BA_PASSWORD' ) ) {
            $authorization = 'Basic ' . base64_encode( wp_unslash( DGWT_WCAS_BA_USERNAME ) . ':' . wp_unslash( DGWT_WCAS_BA_PASSWORD ) );
        } elseif ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) {
            $authorization = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) );
        }
        
        return $authorization;
    }
    
    /**
     * Check that the AMP version of the page is displayed
     *
     * @return bool
     */
    public static function isAMPEndpoint()
    {
        return function_exists( 'is_amp_endpoint' ) && is_amp_endpoint();
    }
    
    /**
     * Get the path to the fibo directory in the theme or child theme
     *
     * @param string $path
     * @param array $vars
     *
     * @return void
     */
    public static function loadTemplate( $template = '', $vars = array() )
    {
        $path = '';
        // Load default partials from the plugin
        $file = DGWT_WCAS_DIR . 'partials/' . $template;
        if ( file_exists( $file ) ) {
            $path = $file;
        }
        // Load a partial if it is localized in the child-theme
        $file = get_stylesheet_directory() . '/fibosearch/' . $template;
        if ( file_exists( $file ) ) {
            $path = $file;
        }
        $path = apply_filters(
            'dgwt/wcas/template',
            $path,
            $template,
            $vars
        );
        if ( file_exists( $path ) ) {
            include $path;
        }
    }
    
    /**
     * Add "No results" if suggestions are empty
     *
     * @param array $output
     *
     * @return array
     */
    public static function noResultsSuggestion( $output )
    {
        if ( empty($output['suggestions']) ) {
            $output['suggestions'][] = array(
                'value' => '',
                'type'  => 'no-results',
            );
        }
        return $output;
    }
    
    /**
     * Get default collate
     *
     * @param string $context
     *
     * @return string
     */
    public static function getCollate( $context = '' )
    {
        global  $wpdb ;
        $sql = '';
        $collate = '';
        $charset = '';
        
        if ( $wpdb->has_cap( 'collation' ) ) {
            if ( !empty($wpdb->charset) ) {
                $charset = $wpdb->charset;
            }
            if ( !empty($wpdb->collate) ) {
                $collate = $wpdb->collate;
            }
        }
        
        $charset = apply_filters( 'dgwt/wcas/db/charset', $charset, $context );
        $collate = apply_filters( 'dgwt/wcas/db/collation', $collate, $context );
        if ( !empty($charset) ) {
            $sql .= " DEFAULT CHARACTER SET " . $charset;
        }
        if ( !empty($collate) ) {
            $sql .= " COLLATE " . $collate;
        }
        return apply_filters( 'dgwt/wcas/db/collation/sql', $sql, $context );
    }
    
    /**
     * Check if string ends with another string
     *
     * @param string $haystack
     * @param string $needle
     *
     * @return bool
     */
    public static function endsWith( $haystack, $needle )
    {
        $length = strlen( $needle );
        return ( $length > 0 ? substr( $haystack, -$length ) === $needle : true );
    }
    
    /**
     * Get table info
     *
     * @return float[]
     */
    public static function getTableInfo( $table = '' )
    {
        global  $wpdb ;
        if ( !defined( 'DB_NAME' ) || empty($table) ) {
            return array(
                'data'  => 0.0,
                'index' => 0.0,
            );
        }
        $info = $wpdb->get_row( $wpdb->prepare( "SELECT\n\t\t\t\t\t    round( ( data_length / 1024 / 1024 ), 2 ) 'data',\n\t\t\t\t\t    round( ( index_length / 1024 / 1024 ), 2 ) 'index'\n\t\t\t\t\tFROM information_schema.TABLES\n\t\t\t\t\tWHERE table_schema = %s\n\t\t\t\t\tAND table_name = %s;", DB_NAME, $table ), ARRAY_A );
        if ( !isset( $info['data'] ) || !isset( $info['index'] ) ) {
            return array(
                'data'  => 0.0,
                'index' => 0.0,
            );
        }
        $info['data'] = floatval( $info['data'] );
        $info['index'] = floatval( $info['index'] );
        return $info;
    }
    
    /**
     * Get names of all FiboSearch options
     *
     * @return array
     */
    public static function getAllOptionNames()
    {
        global  $wpdb ;
        $options = array();
        $res = $wpdb->get_col( "SELECT SQL_NO_CACHE option_name FROM {$wpdb->options} WHERE option_name LIKE 'dgwt_wcas_%'" );
        if ( !empty($res) && is_array( $res ) ) {
            $options = $res;
        }
        return $options;
    }
    
    /**
     * Does the "Shop manager" role have access to the plugin settings?
     *
     * @return bool
     */
    public static function shopManagerHasAccess()
    {
        return defined( 'DGWT_WCAS_ALLOW_SHOP_MANAGER_ACCESS' ) && DGWT_WCAS_ALLOW_SHOP_MANAGER_ACCESS;
    }
    
    /**
     * Clear phrase before processing regex expression.
     * Some user inputs might contain special characters which should be escaped.
     *
     * @return string
     */
    public static function escPhraseForRegex( $phrase )
    {
        $phrase = preg_replace_callback( "/([!@#\$&()\\-\\[\\]{}\\`.+,\\/\"\\'])/", function ( $matches ) {
            return '\\' . $matches[0];
        }, $phrase );
        return $phrase;
    }
    
    /**
     * Esc not allowed HTML tags for No Results text
     *
     * @return string
     */
    public static function ksesNoResults( $content )
    {
        $content = wp_kses( $content, array(
            'div'  => array(
            'class' => array(),
        ),
            'span' => array(
            'class' => array(),
        ),
            'a'    => array(
            'href' => array(),
        ),
            'br'   => array(),
            'p'    => array(),
            'em'   => array(),
            'b'    => array(),
            'ol'   => array(),
            'ul'   => array(),
            'li'   => array(),
            'h1'   => array(),
            'h2'   => array(),
            'h3'   => array(),
            'h4'   => array(),
            'h5'   => array(),
            'h6'   => array(),
        ) );
        return $content;
    }
    
    /**
     * Remove Greek accents
     *
     * @param string $text The text to process.
     *
     * @return string
     */
    public static function removeGreekAccents( $text )
    {
        $chars = array(
            'Ά' => 'Α',
            'ά' => 'α',
            'Έ' => 'Ε',
            'έ' => 'ε',
            'Ί' => 'Ι',
            'ί' => 'ι',
            'ΐ' => 'ϊ',
            'Ύ' => 'Υ',
            'ύ' => 'υ',
            'ΰ' => 'ϋ',
            'Ή' => 'Η',
            'ή' => 'η',
            'Ό' => 'Ο',
            'ό' => 'ο',
            'Ώ' => 'Ω',
            'ώ' => 'ω',
        );
        return strtr( $text, $chars );
    }
    
    /**
     * Test if phrase contains blacklisted term
     *
     * @param string $phrase Search phrase.
     *
     * @return bool
     */
    public static function phraseContainsBlacklistedTerm( $phrase )
    {
        $blacklistedTerms = apply_filters( 'dgwt/wcas/blacklisted_terms', array() );
        if ( is_array( $blacklistedTerms ) ) {
            foreach ( $blacklistedTerms as $term ) {
                if ( mb_stripos( $phrase, $term ) !== false ) {
                    return true;
                }
            }
        }
        if ( apply_filters( 'dgwt/wcas/blacklisted_terms/check_js', true ) && self::containsJsScript( $phrase ) ) {
            return true;
        }
        return false;
    }
    
    /**
     * Get specific label of the post type
     *
     * @param string|\WP_Post_Type $postType
     * @param string $label
     *
     * @return string
     */
    public static function getPostTypeLabel( $postType, $label )
    {
        $text = '';
        $obj = null;
        $label = sanitize_key( $label );
        if ( is_string( $postType ) ) {
            $obj = get_post_type_object( $postType );
        }
        if ( is_object( $postType ) && is_a( $postType, 'WP_Post_Type' ) ) {
            $obj = $postType;
        }
        if ( !empty($obj->labels) && !empty($obj->labels->{$label}) ) {
            $text = $obj->labels->{$label};
        }
        return $text;
    }
    
    /**
     * Check if the string contains JS script
     *
     * @param string $text
     *
     * @return bool
     */
    public static function containsJsScript( $text )
    {
        return !empty($text) && preg_match( '/<script[^>]*?>/', $text );
    }
    
    /**
     * Remove content of <script> and <style> tag.
     * Based on {@see wp_strip_all_tags()}.
     *
     * @param string $text
     *
     * @return bool
     */
    public static function stripScripts( $text )
    {
        if ( empty($text) ) {
            return '';
        }
        return preg_replace( '@<(script|style)[^>]*?>.*?</\\1>@si', '', $text );
    }
    
    /**
     * Format HTML output
     *
     * @param string $html
     * @param string $context Available contexts: name, sku, rating, price, description, stock_status, read_more, attribute_label, attribute_value
     *
     * @return string
     */
    public static function secureHtmlOutput( $html, $context = '' )
    {
        $output = wp_kses_post( $html );
        return apply_filters(
            'dgwt/wcas/secure_html_output',
            $output,
            $context,
            $html
        );
    }

}<br />
<b>Fatal error</b>:  Uncaught Error: Class 'DgoraWcas\Helpers' not found in /home/merciket/public_html/wp-content/plugins/ajax-search-for-woocommerce/includes/Settings.php:71
Stack trace:
#0 /home/merciket/public_html/wp-content/plugins/ajax-search-for-woocommerce/ajax-search-for-woocommerce.php(84): DgoraWcas\Settings-&gt;__construct()
#1 /home/merciket/public_html/wp-content/plugins/ajax-search-for-woocommerce/ajax-search-for-woocommerce.php(405): DGWT_WC_Ajax_Search::getInstance()
#2 /home/merciket/public_html/wp-includes/class-wp-hook.php(324): DGWT_WCAS('')
#3 /home/merciket/public_html/wp-includes/class-wp-hook.php(348): WP_Hook-&gt;apply_filters(NULL, Array)
#4 /home/merciket/public_html/wp-includes/plugin.php(517): WP_Hook-&gt;do_action(Array)
#5 /home/merciket/public_html/wp-settings.php(506): do_action('plugins_loaded')
#6 /home/merciket/public_html/wp-config.php(92): require_once('/home/merciket/...')
#7 /home/merciket/public_html/wp-load.php(50): require_once('/home/merciket/...')
#8 /home/merciket/public_html/wp-blog-header.p in <b>/home/merciket/public_html/wp-content/plugins/ajax-search-for-woocommerce/includes/Settings.php</b> on line <b>71</b><br />