wp_ajax_toggle_auto_updates() WordPress Function

function wp_ajax_toggle_auto_updates() {
	check_ajax_referer( 'updates' );

	if ( empty( $_POST['type'] ) || empty( $_POST['asset'] ) || empty( $_POST['state'] ) ) {
		wp_send_json_error( array( 'error' => __( 'Invalid data. No selected item.' ) ) );
	}

	$asset = sanitize_text_field( urldecode( $_POST['asset'] ) );

	if ( 'enable' !== $_POST['state'] && 'disable' !== $_POST['state'] ) {
		wp_send_json_error( array( 'error' => __( 'Invalid data. Unknown state.' ) ) );
	}
	$state = $_POST['state'];

	if ( 'plugin' !== $_POST['type'] && 'theme' !== $_POST['type'] ) {
		wp_send_json_error( array( 'error' => __( 'Invalid data. Unknown type.' ) ) );
	}
	$type = $_POST['type'];

	switch ( $type ) {
		case 'plugin':
			if ( ! current_user_can( 'update_plugins' ) ) {
				$error_message = __( 'Sorry, you are not allowed to modify plugins.' );
				wp_send_json_error( array( 'error' => $error_message ) );
			}

			$option = 'auto_update_plugins';
			/** This filter is documented in wp-admin/includes/class-wp-plugins-list-table.php */
			$all_items = apply_filters( 'all_plugins', get_plugins() );
			break;
		case 'theme':
			if ( ! current_user_can( 'update_themes' ) ) {
				$error_message = __( 'Sorry, you are not allowed to modify themes.' );
				wp_send_json_error( array( 'error' => $error_message ) );
			}

			$option    = 'auto_update_themes';
			$all_items = wp_get_themes();
			break;
		default:
			wp_send_json_error( array( 'error' => __( 'Invalid data. Unknown type.' ) ) );
	}

	if ( ! array_key_exists( $asset, $all_items ) ) {
		$error_message = __( 'Invalid data. The item does not exist.' );
		wp_send_json_error( array( 'error' => $error_message ) );
	}

	$auto_updates = (array) get_site_option( $option, array() );

	if ( 'disable' === $state ) {
		$auto_updates = array_diff( $auto_updates, array( $asset ) );
	} else {
		$auto_updates[] = $asset;
		$auto_updates   = array_unique( $auto_updates );
	}

	// Remove items that have been deleted since the site option was last updated.
	$auto_updates = array_intersect( $auto_updates, array_keys( $all_items ) );

	update_site_option( $option, $auto_updates );

	wp_send_json_success();
}