• File: class-wp-rest-templates-controller.php
  • Full Path: /home/u505525515/domains/medineeestates.com/public_html/wp-includes/rest-api/endpoints/class-wp-rest-templates-controller.php
  • Date Modified: 05/25/2026 6:29 AM
  • File size: 37.34 KB
  • MIME-type: text/x-php
  • Charset: utf-8
<?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;
        $obj             = get_post_type_object( $post_type );
        $this->rest_base = ! empty( $obj->rest_base ) ? $obj->rest_base : $obj->name;
        $this->namespace = ! empty( $obj->rest_namespace ) ? $obj->rest_namespace : 'wp/v2';
    }

    /**
     * Registers the controllers routes.
     *
     * @since 5.8.0
     * @since 6.1.0 Endpoint for fallback template content.
     */
    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' ),
            )
        );

        // Get fallback template content.
        register_rest_route(
            $this->namespace,
            '/' . $this->rest_base . '/lookup',
            array(
                array(
                    'methods'             => WP_REST_Server::READABLE,
                    'callback'            => array( $this, 'get_template_fallback' ),
                    'permission_callback' => array( $this, 'get_item_permissions_check' ),
                    'args'                => array(
                        'slug'            => array(
                            'description' => __( 'The slug of the template to get the fallback for' ),
                            'type'        => 'string',
                            'required'    => true,
                        ),
                        'is_custom'       => array(
                            'description' => __( 'Indicates if a template is custom or part of the template hierarchy' ),
                            'type'        => 'boolean',
                        ),
                        'template_prefix' => array(
                            'description' => __( 'The template prefix for the created template. This is used to extract the main template type, e.g. in `taxonomy-books` extracts the `taxonomy`' ),
                            'type'        => 'string',
                        ),
                    ),
                ),
            )
        );

        // Lists/updates a single template based on the given id.
        register_rest_route(
            $this->namespace,
            // The route.
            sprintf(
                '/%s/(?P<id>%s%s)',
                $this->rest_base,
                /*
                 * Matches theme's directory: `/themes/<subdirectory>/<theme>/` or `/themes/<theme>/`.
                 * Excludes invalid directory name characters: `/:<>*?"|`.
                 */
                '([^\/:<>\*\?"\|]+(?:\/[^\/:<>\*\?"\|]+)?)',
                // Matches the template name.
                '[\/\w%-]+'
            ),
            array(
                'args'   => array(
                    'id' => array(
                        'description'       => __( 'The id of a template' ),
                        'type'              => 'string',
                        'sanitize_callback' => array( $this, '_sanitize_template_id' ),
                    ),
                ),
                array(
                    'methods'             => WP_REST_Server::READABLE,
                    'callback'            => array( $this, 'get_item' ),
                    'permission_callback' => array( $this, 'get_item_permissions_check' ),
                    'args'                => array(
                        'context' => $this->get_context_param( array( 'default' => 'view' ) ),
                    ),
                ),
                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' ),
            )
        );
    }

    /**
     * Returns the fallback template for the given slug.
     *
     * @since 6.1.0
     * @since 6.3.0 Ignore empty templates.
     *
     * @param WP_REST_Request $request The request instance.
     * @return WP_REST_Response|WP_Error
     */
    public function get_template_fallback( $request ) {
        $hierarchy = get_template_hierarchy( $request['slug'], $request['is_custom'], $request['template_prefix'] );

        do {
            $fallback_template = resolve_block_template( $request['slug'], $hierarchy, '' );
            array_shift( $hierarchy );
        } while ( ! empty( $hierarchy ) && empty( $fallback_template->content ) );

        // To maintain original behavior, return an empty object rather than a 404 error when no template is found.
        $response = $fallback_template ? $this->prepare_item_for_response( $fallback_template, $request ) : new stdClass();

        return rest_ensure_response( $response );
    }

    /**
     * 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;
    }

    /**
     * Requesting this endpoint for a template like 'twentytwentytwo//home'
     * requires using a path like /wp/v2/templates/twentytwentytwo//home. There
     * are special cases when WordPress routing corrects the name to contain
     * only a single slash like 'twentytwentytwo/home'.
     *
     * This method doubles the last slash if it's not already doubled. It relies
     * on the template ID format {theme_name}//{template_slug} and the fact that
     * slugs cannot contain slashes.
     *
     * @since 5.9.0
     * @link https://core.trac.wordpress.org/ticket/54507
     *
     * @param string $id Template ID.
     * @return string Sanitized template ID.
     */
    public function _sanitize_template_id( $id ) {
        $id = urldecode( $id );

        $last_slash_pos = strrpos( $id, '/' );
        if ( false === $last_slash_pos ) {
            return $id;
        }

        $is_double_slashed = substr( $id, $last_slash_pos - 1, 1 ) === '/';
        if ( $is_double_slashed ) {
            return $id;
        }
        return (
            substr( $id, 0, $last_slash_pos )
            . '/'
            . substr( $id, $last_slash_pos )
        );
    }

    /**
     * Checks if a given request has access to read templates.
     *
     * @since 5.8.0
     * @since 6.6.0 Allow users with edit_posts capability to read templates.
     *
     * @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 ) {
        if ( current_user_can( 'edit_posts' ) ) {
            return true;
        }
        foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) {
            if ( current_user_can( $post_type->cap->edit_posts ) ) {
                return true;
            }
        }

        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(),
            )
        );
    }

    /**
     * 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 ) {
        if ( $request->is_method( 'HEAD' ) ) {
            // Return early as this handler doesn't add any response headers.
            return new WP_REST_Response( array() );
        }

        $query = array();
        if ( isset( $request['wp_id'] ) ) {
            $query['wp_id'] = $request['wp_id'];
        }
        if ( isset( $request['area'] ) ) {
            $query['area'] = $request['area'];
        }
        if ( isset( $request['post_type'] ) ) {
            $query['post_type'] = $request['post_type'];
        }

        $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
     * @since 6.6.0 Allow users with edit_posts capability to read individual templates.
     *
     * @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 ) {
        if ( current_user_can( 'edit_posts' ) ) {
            return true;
        }
        foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) {
            if ( current_user_can( $post_type->cap->edit_posts ) ) {
                return true;
            }
        }

        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(),
            )
        );
    }

    /**
     * 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 ) {
        if ( isset( $request['source'] ) && ( 'theme' === $request['source'] || 'plugin' === $request['source'] ) ) {
            $template = get_block_file_template( $request['id'], $this->post_type );
        } else {
            $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 ) );
        }

        $post_before = get_post( $template->wp_id );

        if ( isset( $request['source'] ) && 'theme' === $request['source'] ) {
            wp_delete_post( $template->wp_id, true );
            $request->set_param( 'context', 'edit' );

            $template = get_block_template( $request['id'], $this->post_type );
            $response = $this->prepare_item_for_response( $template, $request );

            return rest_ensure_response( $response );
        }

        $changes = $this->prepare_item_for_database( $request );

        if ( is_wp_error( $changes ) ) {
            return $changes;
        }

        if ( 'custom' === $template->source ) {
            $update = true;
            $result = wp_update_post( wp_slash( (array) $changes ), false );
        } else {
            $update      = false;
            $post_before = null;
            $result      = wp_insert_post( wp_slash( (array) $changes ), false );
        }

        if ( is_wp_error( $result ) ) {
            if ( 'db_update_error' === $result->get_error_code() ) {
                $result->add_data( array( 'status' => 500 ) );
            } else {
                $result->add_data( array( 'status' => 400 ) );
            }
            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;
        }

        $request->set_param( 'context', 'edit' );

        $post = get_post( $template->wp_id );
        /** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
        do_action( "rest_after_insert_{$this->post_type}", $post, $request, false );

        wp_after_insert_post( $post, $update, $post_before );

        $response = $this->prepare_item_for_response( $template, $request );

        return rest_ensure_response( $response );
    }

    /**
     * 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 ) {
        $prepared_post = $this->prepare_item_for_database( $request );

        if ( is_wp_error( $prepared_post ) ) {
            return $prepared_post;
        }

        $prepared_post->post_name = $request['slug'];
        $post_id                  = wp_insert_post( wp_slash( (array) $prepared_post ), true );
        if ( is_wp_error( $post_id ) ) {
            if ( 'db_insert_error' === $post_id->get_error_code() ) {
                $post_id->add_data( array( 'status' => 500 ) );
            } else {
                $post_id->add_data( array( 'status' => 400 ) );
            }

            return $post_id;
        }
        $posts = get_block_templates( array( 'wp_id' => $post_id ), $this->post_type );
        if ( ! count( $posts ) ) {
            return new WP_Error( 'rest_template_insert_error', __( 'No templates exist with that id.' ), array( 'status' => 400 ) );
        }
        $id            = $posts[0]->id;
        $post          = get_post( $post_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;
        }

        /** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
        do_action( "rest_after_insert_{$this->post_type}", $post, $request, true );

        wp_after_insert_post( $post, false, null );

        $response = $this->prepare_item_for_response( $template, $request );
        $response = rest_ensure_response( $response );

        $response->set_status( 201 );
        $response->header( 'Location', rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $template->id ) ) );

        return $response;
    }

    /**
     * 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'];

        $request->set_param( 'context', 'edit' );

        // If we're forcing, then delete permanently.
        if ( $force ) {
            $previous = $this->prepare_item_for_response( $template, $request );
            $result   = wp_delete_post( $id, true );
            $response = new WP_REST_Response();
            $response->set_data(
                array(
                    'deleted'  => true,
                    'previous' => $previous->get_data(),
                )
            );
        } else {
            // 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 )
                );
            }

            /*
             * (Note that internally this falls through to `wp_delete_post()`
             * if the Trash is disabled.)
             */
            $result           = wp_trash_post( $id );
            $template->status = 'trash';
            $response         = $this->prepare_item_for_response( $template, $request );
        }

        if ( ! $result ) {
            return new WP_Error(
                'rest_cannot_delete',
                __( 'The template cannot be deleted.' ),
                array( 'status' => 500 )
            );
        }

        return $response;
    }

    /**
     * Prepares a single template for create or update.
     *
     * @since 5.8.0
     *
     * @param WP_REST_Request $request Request object.
     * @return stdClass|WP_Error 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' => $request['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,
            );
            $changes->meta_input  = array(
                'origin' => $template->source,
            );
        } else {
            $changes->post_name   = $template->slug;
            $changes->ID          = $template->wp_id;
            $changes->post_status = 'publish';
        }
        if ( isset( $request['content'] ) ) {
            if ( is_string( $request['content'] ) ) {
                $changes->post_content = $request['content'];
            } elseif ( isset( $request['content']['raw'] ) ) {
                $changes->post_content = $request['content']['raw'];
            }
        } elseif ( null !== $template && 'custom' !== $template->source ) {
            $changes->post_content = $template->content;
        }
        if ( isset( $request['title'] ) ) {
            if ( is_string( $request['title'] ) ) {
                $changes->post_title = $request['title'];
            } elseif ( ! empty( $request['title']['raw'] ) ) {
                $changes->post_title = $request['title']['raw'];
            }
        } 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;
        }

        if ( 'wp_template' === $this->post_type && isset( $request['is_wp_suggestion'] ) ) {
            $changes->meta_input     = wp_parse_args(
                array(
                    'is_wp_suggestion' => $request['is_wp_suggestion'],
                ),
                $changes->meta_input = array()
            );
        }

        if ( 'wp_template_part' === $this->post_type ) {
            if ( isset( $request['area'] ) ) {
                $changes->tax_input['wp_template_part_area'] = _filter_block_template_part_area( $request['area'] );
            } elseif ( null !== $template && 'custom' !== $template->source && $template->area ) {
                $changes->tax_input['wp_template_part_area'] = _filter_block_template_part_area( $template->area );
            } elseif ( empty( $template->area ) ) {
                $changes->tax_input['wp_template_part_area'] = WP_TEMPLATE_PART_AREA_UNCATEGORIZED;
            }
        }

        if ( ! empty( $request['author'] ) ) {
            $post_author = (int) $request['author'];

            if ( get_current_user_id() !== $post_author ) {
                $user_obj = get_userdata( $post_author );

                if ( ! $user_obj ) {
                    return new WP_Error(
                        'rest_invalid_author',
                        __( 'Invalid author ID.' ),
                        array( 'status' => 400 )
                    );
                }
            }

            $changes->post_author = $post_author;
        }

        /** This filter is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
        return apply_filters( "rest_pre_insert_{$this->post_type}", $changes, $request );
    }

    /**
     * Prepare a single template output for response
     *
     * @since 5.8.0
     * @since 5.9.0 Renamed `$template` to `$item` to match parent class for PHP 8 named parameter support.
     * @since 6.3.0 Added `modified` property to the response.
     *
     * @param WP_Block_Template $item    Template instance.
     * @param WP_REST_Request   $request Request object.
     * @return WP_REST_Response Response object.
     */
    public function prepare_item_for_response( $item, $request ) {
        // Don't prepare the response body for HEAD requests.
        if ( $request->is_method( 'HEAD' ) ) {
            return new WP_REST_Response( array() );
        }

        /*
         * Resolve pattern blocks so they don't need to be resolved client-side
         * in the editor, improving performance.
         */
        $blocks        = parse_blocks( $item->content );
        $blocks        = resolve_pattern_blocks( $blocks );
        $item->content = serialize_blocks( $blocks );

        // Restores the more descriptive, specific name for use within this method.
        $template = $item;

        $fields = $this->get_fields_for_response( $request );

        // Base fields for every template.
        $data = array();

        if ( rest_is_field_included( 'id', $fields ) ) {
            $data['id'] = $template->id;
        }

        if ( rest_is_field_included( 'theme', $fields ) ) {
            $data['theme'] = $template->theme;
        }

        if ( rest_is_field_included( 'content', $fields ) ) {
            $data['content'] = array();
        }
        if ( rest_is_field_included( 'content.raw', $fields ) ) {
            $data['content']['raw'] = $template->content;
        }

        if ( rest_is_field_included( 'content.block_version', $fields ) ) {
            $data['content']['block_version'] = block_version( $template->content );
        }

        if ( rest_is_field_included( 'slug', $fields ) ) {
            $data['slug'] = $template->slug;
        }

        if ( rest_is_field_included( 'source', $fields ) ) {
            $data['source'] = $template->source;
        }

        if ( rest_is_field_included( 'origin', $fields ) ) {
            $data['origin'] = $template->origin;
        }

        if ( rest_is_field_included( 'type', $fields ) ) {
            $data['type'] = $template->type;
        }

        if ( rest_is_field_included( 'description', $fields ) ) {
            $data['description'] = $template->description;
        }

        if ( rest_is_field_included( 'title', $fields ) ) {
            $data['title'] = array();
        }

        if ( rest_is_field_included( 'title.raw', $fields ) ) {
            $data['title']['raw'] = $template->title;
        }

        if ( rest_is_field_included( 'title.rendered', $fields ) ) {
            if ( $template->wp_id ) {
                /** This filter is documented in wp-includes/post-template.php */
                $data['title']['rendered'] = apply_filters( 'the_title', $template->title, $template->wp_id );
            } else {
                $data['title']['rendered'] = $template->title;
            }
        }

        if ( rest_is_field_included( 'status', $fields ) ) {
            $data['status'] = $template->status;
        }

        if ( rest_is_field_included( 'wp_id', $fields ) ) {
            $data['wp_id'] = (int) $template->wp_id;
        }

        if ( rest_is_field_included( 'has_theme_file', $fields ) ) {
            $data['has_theme_file'] = (bool) $template->has_theme_file;
        }

        if ( rest_is_field_included( 'is_custom', $fields ) && 'wp_template' === $template->type ) {
            $data['is_custom'] = $template->is_custom;
        }

        if ( rest_is_field_included( 'author', $fields ) ) {
            $data['author'] = (int) $template->author;
        }

        if ( rest_is_field_included( 'area', $fields ) && 'wp_template_part' === $template->type ) {
            $data['area'] = $template->area;
        }

        if ( rest_is_field_included( 'modified', $fields ) ) {
            $data['modified'] = mysql_to_rfc3339( $template->modified );
        }

        if ( rest_is_field_included( 'author_text', $fields ) ) {
            $data['author_text'] = self::get_wp_templates_author_text_field( $template );
        }

        if ( rest_is_field_included( 'original_source', $fields ) ) {
            $data['original_source'] = self::get_wp_templates_original_source_field( $template );
        }

        if ( rest_is_field_included( 'plugin', $fields ) ) {
            $registered_template = WP_Block_Templates_Registry::get_instance()->get_by_slug( $template->slug );
            if ( $registered_template ) {
                $data['plugin'] = $registered_template->plugin;
            }
        }

        $context = ! empty( $request['context'] ) ? $request['context'] : 'view';
        $data    = $this->add_additional_fields_to_object( $data, $request );
        $data    = $this->filter_response_by_context( $data, $context );

        // Wrap the data in a response object.
        $response = rest_ensure_response( $data );

        if ( rest_is_field_included( '_links', $fields ) || rest_is_field_included( '_embedded', $fields ) ) {
            $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;
    }

    /**
     * Returns the source from where the template originally comes from.
     *
     * @since 6.5.0
     *
     * @param WP_Block_Template $template_object Template instance.
     * @return string                            Original source of the template one of theme, plugin, site, or user.
     */
    private static function get_wp_templates_original_source_field( $template_object ) {
        if ( 'wp_template' === $template_object->type || 'wp_template_part' === $template_object->type ) {
            /*
             * Added by theme.
             * Template originally provided by a theme, but customized by a user.
             * Templates originally didn't have the 'origin' field so identify
             * older customized templates by checking for no origin and a 'theme'
             * or 'custom' source.
             */
            if ( $template_object->has_theme_file &&
            ( 'theme' === $template_object->origin || (
                empty( $template_object->origin ) && in_array(
                    $template_object->source,
                    array(
                        'theme',
                        'custom',
                    ),
                    true
                ) )
            )
            ) {
                return 'theme';
            }

            // Added by plugin.
            if ( 'plugin' === $template_object->origin ) {
                return 'plugin';
            }

            /*
             * Added by site.
             * Template was created from scratch, but has no author. Author support
             * was only added to templates in WordPress 5.9. Fallback to showing the
             * site logo and title.
             */
            if ( empty( $template_object->has_theme_file ) && 'custom' === $template_object->source && empty( $template_object->author ) ) {
                return 'site';
            }
        }

        // Added by user.
        return 'user';
    }

    /**
     * Returns a human readable text for the author of the template.
     *
     * @since 6.5.0
     *
     * @param WP_Block_Template $template_object Template instance.
     * @return string                            Human readable text for the author.
     */
    private static function get_wp_templates_author_text_field( $template_object ) {
        $original_source = self::get_wp_templates_original_source_field( $template_object );
        switch ( $original_source ) {
            case 'theme':
                $theme_name = wp_get_theme( $template_object->theme )->get( 'Name' );
                return empty( $theme_name ) ? $template_object->theme : $theme_name;
            case 'plugin':
                if ( ! function_exists( 'get_plugins' ) ) {
                    require_once ABSPATH . 'wp-admin/includes/plugin.php';
                }
                if ( isset( $template_object->plugin ) ) {
                    $plugins = wp_get_active_and_valid_plugins();

                    foreach ( $plugins as $plugin_file ) {
                        $plugin_basename = plugin_basename( $plugin_file );
                        // Split basename by '/' to get the plugin slug.
                        list( $plugin_slug, ) = explode( '/', $plugin_basename );

                        if ( $plugin_slug === $template_object->plugin ) {
                            $plugin_data = get_plugin_data( $plugin_file );

                            if ( ! empty( $plugin_data['Name'] ) ) {
                                return $plugin_data['Name'];
                            }

                            break;
                        }
                    }
                }

                /*
                 * Fall back to the theme name if the plugin is not defined. That's needed to keep backwards
                 * compatibility with templates that were registered before the plugin attribute was added.
                 */
                $plugins         = get_plugins();
                $plugin_basename = plugin_basename( sanitize_text_field( $template_object->theme . '.php' ) );
                if ( isset( $plugins[ $plugin_basename ] ) && isset( $plugins[ $plugin_basename ]['Name'] ) ) {
                    return $plugins[ $plugin_basename ]['Name'];
                }
                return $template_object->plugin ??
                    $template_object->theme;
            case 'site':
                return get_bloginfo( 'name' );
            case 'user':
                $author = get_user_by( 'id', $template_object->author );
                if ( ! $author ) {
                    return __( 'Unknown author' );
                }
                return $author->get( 'display_name' );
        }

        // Fail-safe to return a string should the original source ever fall through.
        return '';
    }


    /**
     * 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 ) {
        $links = array(
            'self'       => array(
                'href' => rest_url( sprintf( '/%s/%s/%s', $this->namespace, $this->rest_base, $id ) ),
            ),
            'collection' => array(
                'href' => rest_url( rest_get_route_for_post_type_items( $this->post_type ) ),
            ),
            'about'      => array(
                'href' => rest_url( 'wp/v2/types/' . $this->post_type ),
            ),
        );

        if ( post_type_supports( $this->post_type, 'revisions' ) ) {
            $template = get_block_template( $id, $this->post_type );
            if ( $template instanceof WP_Block_Template && ! empty( $template->wp_id ) ) {
                $revisions       = wp_get_latest_revision_id_and_total_count( $template->wp_id );
                $revisions_count = ! is_wp_error( $revisions ) ? $revisions['count'] : 0;
                $revisions_base  = sprintf( '/%s/%s/%s/revisions', $this->namespace, $this->rest_base, $id );

                $links['version-history'] = array(
                    'href'  => rest_url( $revisions_base ),
                    'count' => $revisions_count,
                );

                if ( $revisions_count > 0 ) {
                    $links['predecessor-version'] = array(
                        'href' => rest_url( $revisions_base . '/' . $revisions['latest_id'] ),
                        'id'   => $revisions['latest_id'],
                    );
                }
            }
        }

        return $links;
    }

    /**
     * Get the link relations available for the post and current user.
     *
     * @since 5.8.0
     *
     * @return string[] 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
     * @since 5.9.0 Added `'area'` and `'post_type'`.
     *
     * @return array Collection parameters.
     */
    public function get_collection_params() {
        return array(
            'context'   => $this->get_context_param( array( 'default' => 'view' ) ),
            'wp_id'     => array(
                'description' => __( 'Limit to the specified post id.' ),
                'type'        => 'integer',
            ),
            'area'      => array(
                'description' => __( 'Limit to the specified template part area.' ),
                'type'        => 'string',
            ),
            'post_type' => array(
                'description' => __( 'Post type to get the templates for.' ),
                'type'        => 'string',
            ),
        );
    }

    /**
     * Retrieves the block type' schema, conforming to JSON Schema.
     *
     * @since 5.8.0
     * @since 5.9.0 Added `'area'`.
     *
     * @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-Z0-9_\%-]+',
                ),
                'theme'           => array(
                    'description' => __( 'Theme identifier for the template.' ),
                    'type'        => 'string',
                    'context'     => array( 'embed', 'view', 'edit' ),
                ),
                'type'            => array(
                    'description' => __( 'Type of template.' ),
                    'type'        => 'string',
                    'context'     => array( 'embed', 'view', 'edit' ),
                ),
                'source'          => array(
                    'description' => __( 'Source of template' ),
                    'type'        => 'string',
                    'context'     => array( 'embed', 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'origin'          => array(
                    'description' => __( 'Source of a customized 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' ),
                    'properties'  => array(
                        'raw'           => array(
                            'description' => __( 'Content for the template, as it exists in the database.' ),
                            'type'        => 'string',
                            'context'     => array( 'view', 'edit' ),
                        ),
                        'block_version' => array(
                            'description' => __( 'Version of the content block format used by the template.' ),
                            'type'        => 'integer',
                            'context'     => array( 'edit' ),
                            'readonly'    => true,
                        ),
                    ),
                ),
                'title'           => array(
                    'description' => __( 'Title of template.' ),
                    'type'        => array( 'object', 'string' ),
                    'default'     => '',
                    'context'     => array( 'embed', 'view', 'edit' ),
                    'properties'  => array(
                        'raw'      => array(
                            'description' => __( 'Title for the template, as it exists in the database.' ),
                            'type'        => 'string',
                            'context'     => array( 'view', 'edit', 'embed' ),
                        ),
                        'rendered' => array(
                            'description' => __( 'HTML title for the template, transformed for display.' ),
                            'type'        => 'string',
                            'context'     => array( 'view', 'edit', 'embed' ),
                            'readonly'    => true,
                        ),
                    ),
                ),
                'description'     => array(
                    'description' => __( 'Description of template.' ),
                    'type'        => 'string',
                    'default'     => '',
                    'context'     => array( 'embed', 'view', 'edit' ),
                ),
                'status'          => array(
                    'description' => __( 'Status of template.' ),
                    'type'        => 'string',
                    'enum'        => array_keys( get_post_stati( array( 'internal' => false ) ) ),
                    '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,
                ),
                'author'          => array(
                    'description' => __( 'The ID for the author of the template.' ),
                    'type'        => 'integer',
                    'context'     => array( 'view', 'edit', 'embed' ),
                ),
                'modified'        => array(
                    'description' => __( "The date the template was last modified, in the site's timezone." ),
                    'type'        => 'string',
                    'format'      => 'date-time',
                    'context'     => array( 'view', 'edit' ),
                    'readonly'    => true,
                ),
                'author_text'     => array(
                    'type'        => 'string',
                    'description' => __( 'Human readable text for the author.' ),
                    'readonly'    => true,
                    'context'     => array( 'view', 'edit', 'embed' ),
                ),
                'original_source' => array(
                    'description' => __( 'Where the template originally comes from e.g. \'theme\'' ),
                    'type'        => 'string',
                    'readonly'    => true,
                    'context'     => array( 'view', 'edit', 'embed' ),
                    'enum'        => array(
                        'theme',
                        'plugin',
                        'site',
                        'user',
                    ),
                ),
            ),
        );

        if ( 'wp_template' === $this->post_type ) {
            $schema['properties']['is_custom'] = array(
                'description' => __( 'Whether a template is a custom template.' ),
                'type'        => 'bool',
                'context'     => array( 'embed', 'view', 'edit' ),
                'readonly'    => true,
            );
            $schema['properties']['plugin']    = array(
                'type'        => 'string',
                'description' => __( 'Plugin that registered the template.' ),
                'readonly'    => true,
                'context'     => array( 'view', 'edit', 'embed' ),
            );
        }

        if ( 'wp_template_part' === $this->post_type ) {
            $schema['properties']['area'] = array(
                'description' => __( 'Where the template part is intended for use (header, footer, etc.)' ),
                'type'        => 'string',
                'context'     => array( 'embed', 'view', 'edit' ),
            );
        }

        $this->schema = $schema;

        return $this->add_additional_fields_schema( $this->schema );
    }
}