Search based on product catalog visibility

catalog-visibility.php

<?php
// Add to schema
add_filter( 'cm_tsfwc_product_fields', 'your_slug_add_stock_status_to_schema' );
 function your_slug_add_stock_status_to_schema( $product_fields ) {
     $product_fields[] = [ 'name' => 'catalog_visibility', 'type' => 'string', 'facet' => true ];

     return $product_fields;
 }

// Format data for added schema
add_filter( 'cm_tsfwc_data_before_entry', 'your_slug_add_data_before_entry', 10, 4 );
 function your_slug_add_data_before_entry( $formatted_data, $raw_data, $object_id, $schema_name ) {
    if( $schema_name === 'product' ) { // only add data if the schema is product
		    $formatted_data['catalog_visibility'] = $raw_data->get_catalog_visibility();
    }
    return $formatted_data;
 }

// Use filter_by to filter data based on the catalog visibility 
// On autocomplete bar
add_action( 'cm_tsfwc_additional_autocomplete_params', 'namespace_cm_tsfwc_additional_autocomplete_params' );
function namespace_cm_tsfwc_additional_autocomplete_params() {
	return [
        'filter_by' => 'catalog_visibility: search || catalog_visibility: visible'
	];
}

// On instant search
add_action( 'cm_tsfwc_additional_search_params', 'namespace_cm_tsfwc_additional_search_params' );
function namespace_cm_tsfwc_additional_search_params() {
	return [
        'filter_by' => 'catalog_visibility:visible'
	];
}