From e0a4bd843e68ed3f5cd2e233ef439d58a700135e Mon Sep 17 00:00:00 2001
From: Daniel Richards <daniel.richards@automattic.com>
Date: Thu, 25 Nov 2021 15:28:24 +0800
Subject: [PATCH] WIP - origin

---
 lib/compat/wordpress-5.9/block-template-utils.php      |  3 +++
 .../class-gutenberg-rest-templates-controller.php      |  8 ++++++++
 lib/full-site-editing/class-wp-block-template.php      | 10 ++++++++++
 3 files changed, 21 insertions(+)

diff --git a/lib/compat/wordpress-5.9/block-template-utils.php b/lib/compat/wordpress-5.9/block-template-utils.php
index b22732df001d4..3e2e06248ea29 100644
--- a/lib/compat/wordpress-5.9/block-template-utils.php
+++ b/lib/compat/wordpress-5.9/block-template-utils.php
@@ -527,6 +527,8 @@ function _build_block_template_result_from_post( $post ) {
 			return new WP_Error( 'template_missing_theme', __( 'No theme is defined for this template.', 'gutenberg' ) );
 		}
 
+		$origin = get_post_meta( $post->ID, 'origin', true );
+
 		$theme          = $terms[0]->name;
 		$has_theme_file = wp_get_theme()->get_stylesheet() === $theme &&
 			null !== _get_block_template_file( $post->post_type, $post->post_name );
@@ -538,6 +540,7 @@ function _build_block_template_result_from_post( $post ) {
 		$template->content        = $post->post_content;
 		$template->slug           = $post->post_name;
 		$template->source         = 'custom';
+		$template->origin         = ! empty( $origin ) ? $origin : null;
 		$template->type           = $post->post_type;
 		$template->description    = $post->post_excerpt;
 		$template->title          = $post->post_title;
diff --git a/lib/compat/wordpress-5.9/class-gutenberg-rest-templates-controller.php b/lib/compat/wordpress-5.9/class-gutenberg-rest-templates-controller.php
index 6ec5db1dce988..63ab2cd4cba69 100644
--- a/lib/compat/wordpress-5.9/class-gutenberg-rest-templates-controller.php
+++ b/lib/compat/wordpress-5.9/class-gutenberg-rest-templates-controller.php
@@ -354,6 +354,7 @@ protected function prepare_item_for_database( $request ) {
 			$changes->tax_input   = array(
 				'wp_theme' => $template->theme,
 			);
+			$changes->origin      = $template->source;
 		} else {
 			$changes->post_name   = $template->slug;
 			$changes->ID          = $template->wp_id;
@@ -421,6 +422,7 @@ public function prepare_item_for_response( $template, $request ) { // phpcs:igno
 			'content'        => array( 'raw' => $template->content ),
 			'slug'           => $template->slug,
 			'source'         => $template->source,
+			'origin'         => $template->origin,
 			'type'           => $template->type,
 			'description'    => $template->description,
 			'title'          => array(
@@ -562,6 +564,12 @@ public function get_item_schema() {
 					'context'     => array( 'embed', 'view', 'edit' ),
 					'readonly'    => true,
 				),
+				'source'         => array(
+					'description' => __( 'Source of customized template', 'gutenberg' ),
+					'type'        => 'string',
+					'context'     => array( 'embed', 'view', 'edit' ),
+					'readonly'    => true,
+				),
 				'content'        => array(
 					'description' => __( 'Content of template.', 'gutenberg' ),
 					'type'        => array( 'object', 'string' ),
diff --git a/lib/full-site-editing/class-wp-block-template.php b/lib/full-site-editing/class-wp-block-template.php
index 967c49de953d7..1dbf482c66e06 100644
--- a/lib/full-site-editing/class-wp-block-template.php
+++ b/lib/full-site-editing/class-wp-block-template.php
@@ -67,6 +67,16 @@ class WP_Block_Template {
 	 */
 	public $source = 'theme';
 
+	/**
+	 * Origin of the content when the content has been customized.
+	 * When customized, origin takes on the value of source and source becomes
+	 * 'custom'.
+	 *
+	 * @since 5.9.0
+	 * @var string
+	 */
+	public $origin;
+
 	/**
 	 * Post Id.
 	 *