Make Templatera Template Select Field Searchable (Autocomplete)

// Turn the Templatera template select dropdown into a searchable field.
add_action( 'wp_loaded', function() {
	if ( ! function_exists( 'vc_update_shortcode_param' ) || ! class_exists( 'WPBMap' ) ) {
		return;
	}
	if ( $param = WPBMap::getParam( 'templatera', 'id' ) ) {
		$param['type'] = 'autocomplete';
		$param['settings'] = [
			'multiple' => false,
			'min_length' => 1,
			'groups' => false,
			'unique_values' => true,
			'display_inline' => false,
			'delay' => 0,
			'auto_focus' => true,
		];
		vc_update_shortcode_param( 'templatera', $param );
	}
}, 100 );

// Templatera auto complete callbacks
add_filter(
	'vc_autocomplete_templatera_id_callback',
	function( $search_string ) {
		$query = $search_string;
		$data = [];
		$args = [
			's' => $query,
			'post_type' => 'templatera',
		];
		$args['vc_search_by_title_only'] = true;
		$args['numberposts'] = - 1;
		if ( 0 === strlen( $args['s'] ) ) {
			unset( $args['s'] );
		}
		add_filter( 'posts_search', 'vc_search_by_title_only', 500, 2 );
		$posts = get_posts( $args );
		if ( is_array( $posts ) && ! empty( $posts ) ) {
			foreach ( $posts as $post ) {
				$data[] = [
					'value' => $post->ID,
					'label' => $post->post_title,
					'group' => $post->post_type,
				];
			}
		}

		return $data;
	}
);
add_filter(
	'vc_autocomplete_templatera_id_render',
	function( $value ) {
		$post = get_post( $value['value'] );
		return is_null( $post ) ? false : [
			'label' => $post->post_title,
			'value' => $post->ID,
			'group' => $post->post_type,
		];
	}
);