diff -r 34716fd837a4 -r be944660c56a wp/wp-includes/rest-api/endpoints/class-wp-rest-templates-controller.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-includes/rest-api/endpoints/class-wp-rest-templates-controller.php	Wed Sep 21 18:19:35 2022 +0200
@@ -0,0 +1,600 @@
+<?php
+/**
+ * REST API: WP_REST_Templates_Controller class
+ *
+ * @package    WordPress
+ * @subpackage REST_API
+ * @since 5.8.0
+ */
+
+/**
+ * Base Templates REST API Controller.
+ *
+ * @since 5.8.0
+ *
+ * @see WP_REST_Controller
+ */
+class WP_REST_Templates_Controller extends WP_REST_Controller {
+
+	/**
+	 * Post type.
+	 *
+	 * @since 5.8.0
+	 * @var string
+	 */
+	protected $post_type;
+
+	/**
+	 * Constructor.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param string $post_type Post type.
+	 */
+	public function __construct( $post_type ) {
+		$this->post_type = $post_type;
+		$this->namespace = 'wp/v2';
+		$obj             = get_post_type_object( $post_type );
+		$this->rest_base = ! empty( $obj->rest_base ) ? $obj->rest_base : $obj->name;
+	}
+
+	/**
+	 * Registers the controllers routes.
+	 *
+	 * @since 5.8.0
+	 */
+	public function register_routes() {
+		// Lists all templates.
+		register_rest_route(
+			$this->namespace,
+			'/' . $this->rest_base,
+			array(
+				array(
+					'methods'             => WP_REST_Server::READABLE,
+					'callback'            => array( $this, 'get_items' ),
+					'permission_callback' => array( $this, 'get_items_permissions_check' ),
+					'args'                => $this->get_collection_params(),
+				),
+				array(
+					'methods'             => WP_REST_Server::CREATABLE,
+					'callback'            => array( $this, 'create_item' ),
+					'permission_callback' => array( $this, 'create_item_permissions_check' ),
+					'args'                => $this->get_endpoint_args_for_item_schema( WP_REST_Server::CREATABLE ),
+				),
+				'schema' => array( $this, 'get_public_item_schema' ),
+			)
+		);
+
+		// Lists/updates a single template based on the given id.
+		register_rest_route(
+			$this->namespace,
+			'/' . $this->rest_base . '/(?P<id>[\/\w-]+)',
+			array(
+				array(
+					'methods'             => WP_REST_Server::READABLE,
+					'callback'            => array( $this, 'get_item' ),
+					'permission_callback' => array( $this, 'get_item_permissions_check' ),
+					'args'                => array(
+						'id' => array(
+							'description' => __( 'The id of a template' ),
+							'type'        => 'string',
+						),
+					),
+				),
+				array(
+					'methods'             => WP_REST_Server::EDITABLE,
+					'callback'            => array( $this, 'update_item' ),
+					'permission_callback' => array( $this, 'update_item_permissions_check' ),
+					'args'                => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
+				),
+				array(
+					'methods'             => WP_REST_Server::DELETABLE,
+					'callback'            => array( $this, 'delete_item' ),
+					'permission_callback' => array( $this, 'delete_item_permissions_check' ),
+					'args'                => array(
+						'force' => array(
+							'type'        => 'boolean',
+							'default'     => false,
+							'description' => __( 'Whether to bypass Trash and force deletion.' ),
+						),
+					),
+				),
+				'schema' => array( $this, 'get_public_item_schema' ),
+			)
+		);
+	}
+
+	/**
+	 * Checks if the user has permissions to make the request.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Full details about the request.
+	 * @return true|WP_Error True if the request has read access, WP_Error object otherwise.
+	 */
+	protected function permissions_check( $request ) {
+		// Verify if the current user has edit_theme_options capability.
+		// This capability is required to edit/view/delete templates.
+		if ( ! current_user_can( 'edit_theme_options' ) ) {
+			return new WP_Error(
+				'rest_cannot_manage_templates',
+				__( 'Sorry, you are not allowed to access the templates on this site.' ),
+				array(
+					'status' => rest_authorization_required_code(),
+				)
+			);
+		}
+
+		return true;
+	}
+
+	/**
+	 * Checks if a given request has access to read templates.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Full details about the request.
+	 * @return true|WP_Error True if the request has read access, WP_Error object otherwise.
+	 */
+	public function get_items_permissions_check( $request ) {
+		return $this->permissions_check( $request );
+	}
+
+	/**
+	 * Returns a list of templates.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request The request instance.
+	 * @return WP_REST_Response
+	 */
+	public function get_items( $request ) {
+		$query = array();
+		if ( isset( $request['wp_id'] ) ) {
+			$query['wp_id'] = $request['wp_id'];
+		}
+		if ( isset( $request['area'] ) ) {
+			$query['area'] = $request['area'];
+		}
+
+		$templates = array();
+		foreach ( get_block_templates( $query, $this->post_type ) as $template ) {
+			$data        = $this->prepare_item_for_response( $template, $request );
+			$templates[] = $this->prepare_response_for_collection( $data );
+		}
+
+		return rest_ensure_response( $templates );
+	}
+
+	/**
+	 * Checks if a given request has access to read a single template.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Full details about the request.
+	 * @return true|WP_Error True if the request has read access for the item, WP_Error object otherwise.
+	 */
+	public function get_item_permissions_check( $request ) {
+		return $this->permissions_check( $request );
+	}
+
+	/**
+	 * Returns the given template
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request The request instance.
+	 * @return WP_REST_Response|WP_Error
+	 */
+	public function get_item( $request ) {
+		$template = get_block_template( $request['id'], $this->post_type );
+
+		if ( ! $template ) {
+			return new WP_Error( 'rest_template_not_found', __( 'No templates exist with that id.' ), array( 'status' => 404 ) );
+		}
+
+		return $this->prepare_item_for_response( $template, $request );
+	}
+
+	/**
+	 * Checks if a given request has access to write a single template.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Full details about the request.
+	 * @return true|WP_Error True if the request has write access for the item, WP_Error object otherwise.
+	 */
+	public function update_item_permissions_check( $request ) {
+		return $this->permissions_check( $request );
+	}
+
+	/**
+	 * Updates a single template.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Full details about the request.
+	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
+	 */
+	public function update_item( $request ) {
+		$template = get_block_template( $request['id'], $this->post_type );
+		if ( ! $template ) {
+			return new WP_Error( 'rest_template_not_found', __( 'No templates exist with that id.' ), array( 'status' => 404 ) );
+		}
+
+		$changes = $this->prepare_item_for_database( $request );
+
+		if ( 'custom' === $template->source ) {
+			$result = wp_update_post( wp_slash( (array) $changes ), true );
+		} else {
+			$result = wp_insert_post( wp_slash( (array) $changes ), true );
+		}
+		if ( is_wp_error( $result ) ) {
+			return $result;
+		}
+
+		$template      = get_block_template( $request['id'], $this->post_type );
+		$fields_update = $this->update_additional_fields_for_object( $template, $request );
+		if ( is_wp_error( $fields_update ) ) {
+			return $fields_update;
+		}
+
+		return $this->prepare_item_for_response(
+			get_block_template( $request['id'], $this->post_type ),
+			$request
+		);
+	}
+
+	/**
+	 * Checks if a given request has access to create a template.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Full details about the request.
+	 * @return true|WP_Error True if the request has access to create items, WP_Error object otherwise.
+	 */
+	public function create_item_permissions_check( $request ) {
+		return $this->permissions_check( $request );
+	}
+
+	/**
+	 * Creates a single template.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Full details about the request.
+	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
+	 */
+	public function create_item( $request ) {
+		$changes            = $this->prepare_item_for_database( $request );
+		$changes->post_name = $request['slug'];
+		$result             = wp_insert_post( wp_slash( (array) $changes ), true );
+		if ( is_wp_error( $result ) ) {
+			return $result;
+		}
+		$posts = get_block_templates( array( 'wp_id' => $result ), $this->post_type );
+		if ( ! count( $posts ) ) {
+			return new WP_Error( 'rest_template_insert_error', __( 'No templates exist with that id.' ) );
+		}
+		$id            = $posts[0]->id;
+		$template      = get_block_template( $id, $this->post_type );
+		$fields_update = $this->update_additional_fields_for_object( $template, $request );
+		if ( is_wp_error( $fields_update ) ) {
+			return $fields_update;
+		}
+
+		return $this->prepare_item_for_response(
+			get_block_template( $id, $this->post_type ),
+			$request
+		);
+	}
+
+	/**
+	 * Checks if a given request has access to delete a single template.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Full details about the request.
+	 * @return true|WP_Error True if the request has delete access for the item, WP_Error object otherwise.
+	 */
+	public function delete_item_permissions_check( $request ) {
+		return $this->permissions_check( $request );
+	}
+
+	/**
+	 * Deletes a single template.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Full details about the request.
+	 * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
+	 */
+	public function delete_item( $request ) {
+		$template = get_block_template( $request['id'], $this->post_type );
+		if ( ! $template ) {
+			return new WP_Error( 'rest_template_not_found', __( 'No templates exist with that id.' ), array( 'status' => 404 ) );
+		}
+		if ( 'custom' !== $template->source ) {
+			return new WP_Error( 'rest_invalid_template', __( 'Templates based on theme files can\'t be removed.' ), array( 'status' => 400 ) );
+		}
+
+		$id    = $template->wp_id;
+		$force = (bool) $request['force'];
+
+		// If we're forcing, then delete permanently.
+		if ( $force ) {
+			$previous = $this->prepare_item_for_response( $template, $request );
+			wp_delete_post( $id, true );
+			$response = new WP_REST_Response();
+			$response->set_data(
+				array(
+					'deleted'  => true,
+					'previous' => $previous->get_data(),
+				)
+			);
+
+			return $response;
+		}
+
+		// Otherwise, only trash if we haven't already.
+		if ( 'trash' === $template->status ) {
+			return new WP_Error(
+				'rest_template_already_trashed',
+				__( 'The template has already been deleted.' ),
+				array( 'status' => 410 )
+			);
+		}
+
+		wp_trash_post( $id );
+		$template->status = 'trash';
+		return $this->prepare_item_for_response( $template, $request );
+	}
+
+	/**
+	 * Prepares a single template for create or update.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_REST_Request $request Request object.
+	 * @return stdClass Changes to pass to wp_update_post.
+	 */
+	protected function prepare_item_for_database( $request ) {
+		$template = $request['id'] ? get_block_template( $request['id'], $this->post_type ) : null;
+		$changes  = new stdClass();
+		if ( null === $template ) {
+			$changes->post_type   = $this->post_type;
+			$changes->post_status = 'publish';
+			$changes->tax_input   = array(
+				'wp_theme' => isset( $request['theme'] ) ? $request['theme'] : wp_get_theme()->get_stylesheet(),
+			);
+		} elseif ( 'custom' !== $template->source ) {
+			$changes->post_name   = $template->slug;
+			$changes->post_type   = $this->post_type;
+			$changes->post_status = 'publish';
+			$changes->tax_input   = array(
+				'wp_theme' => $template->theme,
+			);
+		} else {
+			$changes->post_name   = $template->slug;
+			$changes->ID          = $template->wp_id;
+			$changes->post_status = 'publish';
+		}
+		if ( isset( $request['content'] ) ) {
+			$changes->post_content = $request['content'];
+		} elseif ( null !== $template && 'custom' !== $template->source ) {
+			$changes->post_content = $template->content;
+		}
+		if ( isset( $request['title'] ) ) {
+			$changes->post_title = $request['title'];
+		} elseif ( null !== $template && 'custom' !== $template->source ) {
+			$changes->post_title = $template->title;
+		}
+		if ( isset( $request['description'] ) ) {
+			$changes->post_excerpt = $request['description'];
+		} elseif ( null !== $template && 'custom' !== $template->source ) {
+			$changes->post_excerpt = $template->description;
+		}
+
+		return $changes;
+	}
+
+	/**
+	 * Prepare a single template output for response
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param WP_Block_Template $template Template instance.
+	 * @param WP_REST_Request   $request Request object.
+	 * @return WP_REST_Response $data
+	 */
+	public function prepare_item_for_response( $template, $request ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable
+		$result = array(
+			'id'             => $template->id,
+			'theme'          => $template->theme,
+			'content'        => array( 'raw' => $template->content ),
+			'slug'           => $template->slug,
+			'source'         => $template->source,
+			'type'           => $template->type,
+			'description'    => $template->description,
+			'title'          => array(
+				'raw'      => $template->title,
+				'rendered' => $template->title,
+			),
+			'status'         => $template->status,
+			'wp_id'          => $template->wp_id,
+			'has_theme_file' => $template->has_theme_file,
+		);
+
+		if ( 'wp_template_part' === $template->type ) {
+			$result['area'] = $template->area;
+		}
+
+		$result = $this->add_additional_fields_to_object( $result, $request );
+
+		$response = rest_ensure_response( $result );
+		$links    = $this->prepare_links( $template->id );
+		$response->add_links( $links );
+		if ( ! empty( $links['self']['href'] ) ) {
+			$actions = $this->get_available_actions();
+			$self    = $links['self']['href'];
+			foreach ( $actions as $rel ) {
+				$response->add_link( $rel, $self );
+			}
+		}
+
+		return $response;
+	}
+
+
+	/**
+	 * Prepares links for the request.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @param integer $id ID.
+	 * @return array Links for the given post.
+	 */
+	protected function prepare_links( $id ) {
+		$base = sprintf( '%s/%s', $this->namespace, $this->rest_base );
+
+		$links = array(
+			'self'       => array(
+				'href' => rest_url( trailingslashit( $base ) . $id ),
+			),
+			'collection' => array(
+				'href' => rest_url( $base ),
+			),
+			'about'      => array(
+				'href' => rest_url( 'wp/v2/types/' . $this->post_type ),
+			),
+		);
+
+		return $links;
+	}
+
+	/**
+	 * Get the link relations available for the post and current user.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @return array List of link relations.
+	 */
+	protected function get_available_actions() {
+		$rels = array();
+
+		$post_type = get_post_type_object( $this->post_type );
+
+		if ( current_user_can( $post_type->cap->publish_posts ) ) {
+			$rels[] = 'https://api.w.org/action-publish';
+		}
+
+		if ( current_user_can( 'unfiltered_html' ) ) {
+			$rels[] = 'https://api.w.org/action-unfiltered-html';
+		}
+
+		return $rels;
+	}
+
+	/**
+	 * Retrieves the query params for the posts collection.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @return array Collection parameters.
+	 */
+	public function get_collection_params() {
+		return array(
+			'context' => $this->get_context_param(),
+			'wp_id'   => array(
+				'description' => __( 'Limit to the specified post id.' ),
+				'type'        => 'integer',
+			),
+		);
+	}
+
+	/**
+	 * Retrieves the block type' schema, conforming to JSON Schema.
+	 *
+	 * @since 5.8.0
+	 *
+	 * @return array Item schema data.
+	 */
+	public function get_item_schema() {
+		if ( $this->schema ) {
+			return $this->add_additional_fields_schema( $this->schema );
+		}
+
+		$schema = array(
+			'$schema'    => 'http://json-schema.org/draft-04/schema#',
+			'title'      => $this->post_type,
+			'type'       => 'object',
+			'properties' => array(
+				'id'             => array(
+					'description' => __( 'ID of template.' ),
+					'type'        => 'string',
+					'context'     => array( 'embed', 'view', 'edit' ),
+					'readonly'    => true,
+				),
+				'slug'           => array(
+					'description' => __( 'Unique slug identifying the template.' ),
+					'type'        => 'string',
+					'context'     => array( 'embed', 'view', 'edit' ),
+					'required'    => true,
+					'minLength'   => 1,
+					'pattern'     => '[a-zA-Z_\-]+',
+				),
+				'theme'          => array(
+					'description' => __( 'Theme identifier for the template.' ),
+					'type'        => 'string',
+					'context'     => array( 'embed', 'view', 'edit' ),
+				),
+				'source'         => array(
+					'description' => __( 'Source of template' ),
+					'type'        => 'string',
+					'context'     => array( 'embed', 'view', 'edit' ),
+					'readonly'    => true,
+				),
+				'content'        => array(
+					'description' => __( 'Content of template.' ),
+					'type'        => array( 'object', 'string' ),
+					'default'     => '',
+					'context'     => array( 'embed', 'view', 'edit' ),
+				),
+				'title'          => array(
+					'description' => __( 'Title of template.' ),
+					'type'        => array( 'object', 'string' ),
+					'default'     => '',
+					'context'     => array( 'embed', 'view', 'edit' ),
+				),
+				'description'    => array(
+					'description' => __( 'Description of template.' ),
+					'type'        => 'string',
+					'default'     => '',
+					'context'     => array( 'embed', 'view', 'edit' ),
+				),
+				'status'         => array(
+					'description' => __( 'Status of template.' ),
+					'type'        => 'string',
+					'default'     => 'publish',
+					'context'     => array( 'embed', 'view', 'edit' ),
+				),
+				'wp_id'          => array(
+					'description' => __( 'Post ID.' ),
+					'type'        => 'integer',
+					'context'     => array( 'embed', 'view', 'edit' ),
+					'readonly'    => true,
+				),
+				'has_theme_file' => array(
+					'description' => __( 'Theme file exists.' ),
+					'type'        => 'bool',
+					'context'     => array( 'embed', 'view', 'edit' ),
+					'readonly'    => true,
+				),
+			),
+		);
+
+		$this->schema = $schema;
+
+		return $this->add_additional_fields_schema( $this->schema );
+	}
+}