int
	 *
	 * @return void
	 */
	public function toggleAdvancedSettings() {
		if ( ! current_user_can( Helpers::shopManagerHasAccess() ? 'manage_woocommerce' : 'manage_options' ) ) {
			wp_die( - 1, 403 );
		}

		check_ajax_referer( 'dgwt_wcas_advanced_options_switch' );

		$show = ! empty( $_GET['adv_settings_value'] ) && $_GET['adv_settings_value'] === 'show' ? 'on' : 'off';

		update_option( 'dgwt_wcas_settings_show_advanced', $show );

		wp_send_json_success();
	}

	/**
	 * List searchable custom fields
	 * Ajax endpoint
	 *
	 * @return void
	 */
	public function listSearchableCustomFields__premium_only() {
		if ( ! current_user_can( Helpers::shopManagerHasAccess() ? 'manage_woocommerce' : 'manage_options' ) ) {
			wp_die( - 1, 403 );
		}

		check_ajax_referer( 'dgwt_wcas_get_custom_fields' );

		$customFieldsTrans = get_transient( 'dgwt_wcas_searchable_custom_fields' );

		if ( ! empty( $customFieldsTrans ) && is_array( $customFieldsTrans ) ) {
			wp_send_json_success( $customFieldsTrans );
		}

		$list = Helpers::getSearchableCustomFields();

		set_transient( 'dgwt_wcas_searchable_custom_fields', $list, 60 );


		wp_send_json_success( $list );
	}

	/**
	 * List terms for filters
	 * Ajax endpoint
	 *
	 * @return void
	 */
	public function searchTermsForFilter__premium_only() {
		if ( ! current_user_can( Helpers::shopManagerHasAccess() ? 'manage_woocommerce' : 'manage_options' ) ) {
			wp_die( - 1, 403 );
		}

		check_ajax_referer( 'dgwt_wcas_get_filter_terms' );

		$query = ! empty( $_POST['query'] ) ? wc_clean( wp_unslash( $_POST['query'] ) ) : '';
		$type  = ! empty( $_POST['type'] ) ? wc_clean( wp_unslash( $_POST['type'] ) ) : '';

		// Attribute taxonomy has form: "pa:X"
		if ( strpos( $type, 'pa:' ) !== false ) {
			$type = wc_attribute_taxonomy_name_by_id( (int) str_replace( 'pa:', '', $type ) );
		}

		if ( empty( $type ) ) {
			wp_send_json_success( array() );
		}

		$args = array(
			'hide_empty' => false,
			'number'     => 100,
			'taxonomy'   => $type,
		);
		if ( ! empty( $query ) ) {
			$args['search'] = $query;
		}

		if ( Multilingual::isMultilingual() ) {
			$terms = Multilingual::getTermsInLang( $args );
		} else {
			$terms = get_terms( $args );
		}

		if ( empty( $terms ) ) {
			wp_send_json_success( array() );
		}

		$list = array_map( function ( $term ) {
			return array(
				'key'   => $term->term_id,
				'label' => $term->name,
			);
		}, $terms );

		wp_send_json_success( array_values( $list ) );
	}

	/**
	 * Check if a option is premium
	 *
	 * @param array $option
	 *
	 * @return bool
	 */
	public static function isOptionPremium( $option ) {
		$is_premium = false;
		if ( ! empty( $option['class'] ) && strpos( $option['class'], 'dgwt-wcas-premium-only' ) !== false ) {
			$is_premium = true;
		}

		return $is_premium;
	}


	/**
	 * Force values of some settings if they depend on other settings
	 *
	 * @return void
	 */
	private function dependentOptions() {
		add_filter( 'dgwt/wcas/settings/section=form', function ( $settings ) {
			$text                   = __( "You have selected the <b>Appearance -> Style -> Pirx</b> option. Pirx style forces a submit button to be enabled. You can find this option a few rows below. That's why this option is blocked.", 'ajax-search-for-woocommerce' );
			$settings[400]['label'] = Helpers::createOverrideTooltip( 'ovtt-pirx-submit-button', '<p>' . $text . '</p>' ) . $settings[400]['label'];

			return $settings;
		} );

		// Pirx style - force options for submit button
		// Mark that the value of the option "mobile overlay" is forced
		if ( $this->getOption( 'search_style' ) === 'pirx' ) {

			//Submit button
			add_filter( 'dgwt/wcas/settings/load_value/key=show_submit_button', function () {
				return 'on';
			} );

			add_filter( 'dgwt/wcas/settings/section=form', function ( $settings ) {
				$settings[400]['disabled'] = true;

				return $settings;
			} );

			// Value of submit button
			add_filter( 'dgwt/wcas/settings/load_value/key=search_submit_text', function () {
				return '';
			} );

			add_filter( 'dgwt/wcas/settings/section=form', function ( $settings ) {
				$settings[500]['disabled'] = true;
				$settings[500]['class']    = $settings[500]['class'] . ' dgwt-wcas-hidden';

				return $settings;
			} );

			// Submit background color
			add_filter( 'dgwt/wcas/settings/load_value/key=bg_submit_color', function () {
				return '';
			} );

			add_filter( 'dgwt/wcas/settings/section=form', function ( $settings ) {
				$settings[510]['disabled'] = true;
				$settings[510]['class']    = $settings[510]['class'] . ' dgwt-wcas-hidden';

				return $settings;
			} );
		}
	}

	/**
	 * Clear settings cache
	 */
	public function clearCache() {
		$this->settingsCache = array();
	}
}