Fix coming soon page fatal error with non-FSE theme (#46570)

* Fix fatal error with non-fse theme

* Update conditional inclusion of header and footer templates in coming-soon-store-only.php

* Update conditional inclusion of header and footer templates in ComingSoonRequestHandler.php

* Remove add_theme_support( block-template-parts );

* Add changefile(s) from automation for the following project(s): woocommerce

---------

Co-authored-by: github-actions <github-actions@github.com>

plugins/woocommerce/changelog/46570-fix-coming-soon-page-fatal-error

@@ -0,0 +1,4 @@
+Significance: patch
+Type: fix
+
+Fix coming soon page fatal error with non-FSE theme

plugins/woocommerce/patterns/coming-soon-store-only.php

@@ -9,7 +9,12 @@
 
 ?>
 
-<!-- wp:template-part {"slug":"header","tagName":"header"} /-->
+<?php
+if ( wc_current_theme_is_fse_theme() ) {
+	echo '<!-- wp:template-part {"slug":"header","tagName":"header"} /-->';
+}
+?>
+
 <!-- wp:group {"layout":{"type":"constrained"}} -->
 <div class="wp-block-group"><!-- wp:spacer -->
 <div style="height:100px" aria-hidden="true" class="wp-block-spacer"></div>
@@ -31,5 +36,10 @@
 <div style="height:100px" aria-hidden="true" class="wp-block-spacer"></div>
 <!-- /wp:spacer --></div>
 <!-- /wp:group -->
-<!-- wp:template-part {"slug":"footer","tagName":"footer"} /-->
 
+
+<?php
+if ( wc_current_theme_is_fse_theme() ) {
+	echo '<!-- wp:template-part {"slug":"footer","tagName":"footer"} /-->';
+}
+?>

plugins/woocommerce/src/Blocks/BlockTemplatesController.php

@@ -3,6 +3,7 @@ namespace Automattic\WooCommerce\Blocks;
 
 use Automattic\WooCommerce\Blocks\Templates\ProductCatalogTemplate;
 use Automattic\WooCommerce\Blocks\Utils\BlockTemplateUtils;
+use Automattic\WooCommerce\Blocks\Templates\ComingSoonTemplate;
 
 /**
  * BlockTypesController class.
@@ -331,12 +332,13 @@ class BlockTemplatesController {
 	 * @return array
 	 */
 	public function add_block_templates( $query_result, $query, $template_type ) {
-		if ( ! BlockTemplateUtils::supports_block_templates( $template_type ) ) {
+		$slugs = isset( $query['slug__in'] ) ? $query['slug__in'] : array();
+
+		if ( ! BlockTemplateUtils::supports_block_templates( $template_type ) && ! in_array( ComingSoonTemplate::SLUG, $slugs, true ) ) {
 			return $query_result;
 		}
 
 		$post_type      = isset( $query['post_type'] ) ? $query['post_type'] : '';
-		$slugs          = isset( $query['slug__in'] ) ? $query['slug__in'] : array();
 		$template_files = $this->get_block_templates( $slugs, $template_type );
 		$theme_slug     = wp_get_theme()->get_stylesheet();
 

plugins/woocommerce/src/Blocks/BlockTemplatesRegistry.php

@@ -53,7 +53,9 @@ class BlockTemplatesRegistry {
 				SingleProductTemplate::SLUG        => new SingleProductTemplate(),
 			);
 		} else {
-			$templates = array();
+			$templates = array(
+				ComingSoonTemplate::SLUG => new ComingSoonTemplate(),
+			);
 		}
 		if ( BlockTemplateUtils::supports_block_templates( 'wp_template_part' ) ) {
 			$template_parts = array(

plugins/woocommerce/src/Internal/ComingSoon/ComingSoonRequestHandler.php

@@ -66,10 +66,20 @@ class ComingSoonRequestHandler {
 
 		// A coming soon page needs to be displayed. Don't cache this response.
 		nocache_headers();
+		add_theme_support( 'block-templates' );
 
 		$template = get_query_template( 'coming-soon' );
+
+		if ( ! wc_current_theme_is_fse_theme() && $this->coming_soon_helper->is_store_coming_soon() ) {
+			get_header();
+		}
+
 		include $template;
 
+		if ( ! wc_current_theme_is_fse_theme() && $this->coming_soon_helper->is_store_coming_soon() ) {
+			get_footer();
+		}
+
 		die();
 	}
 }