<?php
/**
 * Tier: nuclear.
 *
 * @package Zero_Blocks_Given
 *
 * Unregisters every core block type via unregister_block_type(). Editor
 * inserter goes empty for core blocks; markup of any pre-existing core
 * blocks stops rendering. Only safe for sites that author content via
 * page builders, shortcodes, or classic editor exclusively.
 *
 * Nuclear is the one site-wide tier: because it already guts the block
 * backend (empty inserter, no core-block rendering), it also strips the
 * WooCommerce Blocks admin asset-data payload (AssetDataRegistry), which
 * core-block unregistration alone does not touch. On zero-Gutenberg stores
 * — nuclear's entire audience — that payload is dead weight (measured
 * ~600ms in wp-admin on a large catalogue).
 */

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Register the nuclear tier.
 *
 * Hooks at `init` priority 99 — after WP core registers its blocks (prio 10
 * via `register_core_block_style_handles`'s sibling `WP_Block_Type::register`
 * dispatchers) and after most plugin block registrations.
 *
 * In admin, additionally removes WooCommerce Blocks' AssetDataRegistry payload
 * — the one backend cost that surviving core-block unregistration leaves in
 * place. WC registers `AssetDataRegistry::enqueue_asset_data` on
 * `admin_print_footer_scripts` priority 1 (see WC src/Blocks/Assets/
 * AssetDataRegistry.php). The container returns the same shared instance that
 * registered the hook, so removing by that instance + method matches.
 *
 * @return void
 */
function zeroblg_register_tier_nuclear(): void {
	add_action(
		'init',
		static function (): void {
			if ( ! function_exists( 'unregister_block_type' ) ) {
				return;
			}

			$registry = WP_Block_Type_Registry::get_instance();

			foreach ( $registry->get_all_registered() as $block_type ) {
				if ( 0 === strpos( $block_type->name, 'core/' ) ) {
					unregister_block_type( $block_type->name );
				}
			}
		},
		99
	);

	// Site-wide only for nuclear: strip the WC Blocks admin asset-data payload.
	if ( is_admin() ) {
		add_action(
			'woocommerce_blocks_loaded',
			static function (): void {
				if ( ! class_exists( 'Automattic\WooCommerce\Blocks\Package' ) ) {
					return;
				}

				try {
					$asset_data = \Automattic\WooCommerce\Blocks\Package::container()
						->get( \Automattic\WooCommerce\Blocks\Assets\AssetDataRegistry::class );
					remove_action( 'admin_print_footer_scripts', array( $asset_data, 'enqueue_asset_data' ), 1 );
				} catch ( \Throwable $e ) {
					unset( $e ); // DI miss or hook shape changed on this WC version — safe to ignore.
				}
			}
		);
	}
}