block-styles-manager.php

<?php
/**
 * Plugin Name: Block Style Manager by Pixelgrade
 * Plugin URI: https://github.com/pixelgrade/nova-blocks/
 * Description: Nova Blocks is a collection of <strong>distinctive Gutenberg blocks</strong>, committed to making your site shine like a newborn star. It is taking a design-driven approach to help you made the right decisions and showcase your content in the best shape.
 * Version: 0.0.1
 * Author: Pixelgrade
 * Author URI: https://www.pixelgrade.com
 * Text Domain: __plugin_txtd
 * Tested up to: 5.2
 *
 * Nova Blocks is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * any later version.
 *
 * You should have received a copy of the GNU General Public License
 * along with Nova Blocks. If not, see <http://www.gnu.org/licenses/>.
 *
 */

/**
 * Gets this plugin's absolute directory path.
 *
 * @since  2.1.0
 * @ignore
 * @access private
 *
 * @return string
 */
function _get_plugin_directory() {
	return __DIR__;
}

/**
 * Gets this plugin's URL.
 *
 * @since  2.1.0
 * @ignore
 * @access private
 *
 * @return string
 */
function _get_plugin_url() {
	static $plugin_url;

	if ( empty( $plugin_url ) ) {
		$plugin_url = plugins_url( null, __FILE__ );
	}

	return $plugin_url;
}

include __DIR__ . '/lib/enqueue-scripts.php';

function get_block_styles() {
	$styles = get_option( 'block-styles', '' );
	return $styles;
}

function update_block_styles( $request ) {
	$styles = $request->get_param( 'styles' );
	update_option( 'block-styles', $styles );
	return $styles;
}

function block_styles_endpoints() {
	add_action( 'rest_api_init', function () {
		register_rest_route( 'block-styles/v1','/styles', array(
			'methods' => 'GET',
			'callback' => 'get_block_styles',
		) );
	} );

	add_action( 'rest_api_init', function () {
		register_rest_route( 'block-styles/v1','/styles', array(
			'methods' => 'POST',
			'callback' => 'update_block_styles',
		) );
	} );
}
add_action( 'init', 'block_styles_endpoints' );