Refactor server-side block registration

plugins/woocommerce/src/Admin/Features/ProductBlockEditor/BlockRegistry.php

@@ -126,6 +126,49 @@ class BlockRegistry {
 		return $block_name;
 	}
 
+	/**
+	 * Augment the attributes of a block by adding attributes that are used by the product editor.
+	 *
+	 * @param array $attributes Block attributes.
+	 */
+	private function augment_attributes( $attributes ) {
+		// Note: If you modify this function, also update the client-side
+		// registerWooBlockType function in @woocommerce/block-templates.
+		return array_merge(
+			$attributes,
+			[
+				'_templateBlockId'             => [
+					'type'               => 'string',
+					'__experimentalRole' => 'content',
+				],
+				'_templateBlockOrder'          => [
+					'type'               => 'integer',
+					'__experimentalRole' => 'content',
+				],
+				'_templateBlockHideConditions' => [
+					'type'               => 'array',
+					'__experimentalRole' => 'content',
+				],
+			]
+		);
+	}
+
+	/**
+	 * Augment the uses_context of a block by adding attributes that are used by the product editor.
+	 *
+	 * @param array $uses_context Block uses_context.
+	 */
+	private function augment_uses_context( $uses_context ) {
+		// Note: If you modify this function, also update the client-side
+		// registerProductEditorBlockType function in @woocommerce/product-editor.
+		return array_merge(
+			isset( $uses_context ) ? $uses_context : [],
+			[
+				'productType',
+			]
+		);
+	}
+
 	/**
 	 * Register a single block.
 	 *
@@ -157,29 +200,8 @@ class BlockRegistry {
 		return register_block_type_from_metadata(
 			$block_json_file,
 			[
-				'attributes'   => array_merge(
-					$metadata['attributes'],
-					[
-						'_templateBlockId'             => [
-							'type'               => 'string',
-							'__experimentalRole' => 'content',
-						],
-						'_templateBlockOrder'          => [
-							'type'               => 'integer',
-							'__experimentalRole' => 'content',
-						],
-						'_templateBlockHideConditions' => [
-							'type'               => 'array',
-							'__experimentalRole' => 'content',
-						],
-					],
-				),
-				'uses_context' => array_merge(
-					isset( $metadata['usesContext'] ) ? $metadata['usesContext'] : [],
-					[
-						'productType',
-					]
-				),
+				'attributes'   => $this->augment_attributes( $metadata['attributes'] ),
+				'uses_context' => $this->augment_uses_context( $metadata['usesContext'] ),
 			]
 		);
 	}