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Edit File: BlockServiceProvider.php

<?php

/**
 * Block Service Provider
 */

namespace SureCartBlocks\Blocks;

use SureCartBlocks\Blocks\BlockService;
use SureCartCore\ServiceProviders\ServiceProviderInterface;

/**
 * Block Service Provider Class
 * Registers block service used throughout the plugin
 *
 * @author  SureCart <andre@surecart.com>
 * @since   1.0.0
 * @license GPL
 */
class BlockServiceProvider implements ServiceProviderInterface {
	/**
	 * {@inheritDoc}
	 *
	 *  @param  \Pimple\Container $container Service Container.
	 */
	public function register( $container ) {
		$app = $container[ SURECART_APPLICATION_KEY ];

$container['blocks'] = function () use ( $app ) {
			return new BlockService( $app );
		};

$app->alias( 'blocks', 'blocks' );

$app->alias(
			'block',
			function () use ( $app ) {
				return call_user_func_array( [ $app->blocks(), 'render' ], func_get_args() );
			}
		);
	}

/**
	 * {@inheritDoc}
	 *
	 * @param  \Pimple\Container $container Service Container.
	 *
	 * @return void
	 *
	 * phpcs:disable Generic.CodeAnalysis.UnusedFunctionParameter
	 */
	public function bootstrap( $container ) {
		// allow our web components in wp_kses contexts.
		add_filter( 'wp_kses_allowed_html', [ $this, 'ksesComponents' ] );
		add_filter(
			'safe_style_css',
			function ( $styles ) {
				return array_merge(
					[
						'--spacing',
						'--font-weight',
						'--line-height',
						'--font-size',
						'--color',
						'--sc-pill-option-active-background-color',
						'--sc-pill-option-active-text-color',
						'--sc-pill-option-active-border-color',
					],
					$styles
				);
			}
		);

// register our blocks.
		$this->registerBlocks( $container );
	}

/**
	 * Add iFrame to allowed wp_kses_post tags
	 *
	 * @param array $tags Allowed tags, attributes, and/or entities.
	 *
	 * @return array
	 */
	public function ksesComponents( $tags ) {
		$components = json_decode( file_get_contents( plugin_dir_path( SURECART_PLUGIN_FILE ) . 'app / src / Support / kses . json' ), true );

// add slot to defaults.
		$tags['span']['slot'] = true;
		$tags['div']['slot']  = true;

return array_merge( $components, $tags );
	}

/**
	 * Register blocks from config
	 *
	 * @param  \Pimple\Container $container Service Container.
	 *
	 * @return  void
	 */
	public function registerBlocks( $container ) {
		$service = \SureCart::resolve( SURECART_CONFIG_KEY );
		if ( ! empty( $service['blocks'] ) ) {
			foreach ( $service['blocks'] as $block ) {
				( new $block() )->register( $container );
			}
		}
	}
}

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