<?php

/**

 * REST API: WP_REST_Themes_Controller class

 *

 * @package WordPress

 * @subpackage REST_API

 * @since 5.0.0

 */

/**

 * Core class used to manage themes via the REST API.

 *

 * @since 5.0.0

 *

 * @see WP_REST_Controller

 */

class WP_REST_Themes_Controller extends WP_REST_Controller {

	/**

	 * Constructor.

	 *

	 * @since 5.0.0

	 */

	public function __construct() {

		$this->namespace = 'wp/v2';

		$this->rest_base = 'themes';

	}

	/**

	 *

	 * @since 5.0.0

	 *

	 * @see register_rest_route()

	 */

	public function register_routes() {

		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(),

				),

				'schema' => array( $this, 'get_item_schema' ),

			)

		);

	}

	/**

	 * Checks if a given request has access to read the theme.

	 *

	 * @since 5.0.0

	 *

	 * @param WP_REST_Request $request Full details about the request.

	 * @return true|WP_Error True if the request has read access for the item, otherwise WP_Error object.

	 */

	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(

			array( 'status' => rest_authorization_required_code() )

		);

	}

	/**

	 * Retrieves a collection of themes.

	 *

	 * @since 5.0.0

	 *

	 * @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 get_items( $request ) {

		}

		$response = rest_ensure_response( $themes );

		$response->header( 'X-WP-Total', count( $themes ) );

		return $response;

	}

	/**

	 * Prepares a single theme output for response.

	 *

	 * @since 5.0.0

	 *

	 * @param WP_Theme        $theme   Theme object.

	 * @param WP_REST_Request $request Request object.

	 * @return WP_REST_Response Response object.

	 */

	public function prepare_item_for_response( $theme, $request ) {

		$data   = array();

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

		if ( rest_is_field_included( 'stylesheet', $fields ) ) {

			$data['stylesheet'] = $theme->get_stylesheet();

		}

		if ( rest_is_field_included( 'template', $fields ) ) {

			/**

			 * Use the get_template() method, not the 'Template' header, for finding the template.

			 * The 'Template' header is only good for what was written in the style.css, while

			 * get_template() takes into account where WordPress actually located the theme and

			 * whether it is actually valid.

			 */

			$data['template'] = $theme->get_template();

		}

		$plain_field_mappings = array(

			'requires_php' => 'RequiresPHP',

			'requires_wp'  => 'RequiresWP',

			'textdomain'   => 'TextDomain',

			'version'      => 'Version',

		);

		foreach ( $plain_field_mappings as $field => $header ) {

			if ( rest_is_field_included( $field, $fields ) ) {

				$data[ $field ] = $theme->get( $header );

			}

		}

		if ( rest_is_field_included( 'screenshot', $fields ) ) {

			// Using $theme->get_screenshot() with no args to get absolute URL.

			$data['screenshot'] = $theme->get_screenshot() ? $theme->get_screenshot() : '';

		}

		$rich_field_mappings = array(

			'author'      => 'Author',

			'author_uri'  => 'AuthorURI',

			'description' => 'Description',

			'name'        => 'Name',

			'tags'        => 'Tags',

			'theme_uri'   => 'ThemeURI',

		);

		foreach ( $rich_field_mappings as $field => $header ) {

			if ( rest_is_field_included( "{$field}.raw", $fields ) ) {

				$data[ $field ]['raw'] = $theme->display( $header, false, true );

			}

			if ( rest_is_field_included( "{$field}.rendered", $fields ) ) {

				$data[ $field ]['rendered'] = $theme->display( $header );

			}

		}

			foreach ( get_registered_theme_features() as $feature => $config ) {

				if ( ! is_array( $config['show_in_rest'] ) ) {

					continue;

				}

				$name = $config['show_in_rest']['name'];

				if ( ! rest_is_field_included( "theme_supports.{$name}", $fields ) ) {

					continue;

				}

				if ( ! current_theme_supports( $feature ) ) {

					$data['theme_supports'][ $name ] = $config['show_in_rest']['schema']['default'];

					continue;

				}

				$support = get_theme_support( $feature );

				if ( isset( $config['show_in_rest']['prepare_callback'] ) ) {

					$prepare = $config['show_in_rest']['prepare_callback'];

				} else {

					$prepare = array( $this, 'prepare_theme_support' );

				}

				$prepared = $prepare( $support, $config, $feature, $request );

				if ( is_wp_error( $prepared ) ) {

					continue;

				}

				$data['theme_supports'][ $name ] = $prepared;

			}

		}

		$data = $this->add_additional_fields_to_object( $data, $request );

		// Wrap the data in a response object.

		$response = rest_ensure_response( $data );

		/**

		 * Filters theme data returned from the REST API.

		 *

		 * @since 5.0.0

		 *

		 * @param WP_REST_Response $response The response object.

		 * @param WP_Theme         $theme    Theme object used to create response.

		 * @param WP_REST_Request  $request  Request object.

		 */

		return apply_filters( 'rest_prepare_theme', $response, $theme, $request );

	}

	/**

	 * Prepares the theme support value for inclusion in the REST API response.

	 *

	 * @since 5.5.0

	 *

	 * @param mixed           $support The raw value from get_theme_support().

	 * @param array           $args    The feature's registration args.

	 * @param string          $feature The feature name.

	 * @param WP_REST_Request $request The request object.

	 * @return mixed The prepared support value.

	 */

	protected function prepare_theme_support( $support, $args, $feature, $request ) {

		$schema = $args['show_in_rest']['schema'];

		if ( 'boolean' === $schema['type'] ) {

			return true;

		}

		if ( is_array( $support ) && ! $args['variadic'] ) {

			$support = $support[0];

		}

		return rest_sanitize_value_from_schema( $support, $schema );

	}

	/**

	 * Retrieves the theme's schema, conforming to JSON Schema.

	 *

	 * @since 5.0.0

	 *

	 * @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'      => 'theme',

			'type'       => 'object',

			'properties' => array(

				'stylesheet'     => array(

					'description' => __( 'The theme\'s stylesheet. This uniquely identifies the theme.' ),

					'type'        => 'string',

					'readonly'    => true,

				),

				'template'       => array(

					'description' => __( 'The theme\'s template. If this is a child theme, this refers to the parent theme, otherwise this is the same as the theme\'s stylesheet.' ),

					'type'        => 'string',

					'readonly'    => true,

				),

				'author'         => array(

					'description' => __( 'The theme author.' ),

					'type'        => 'object',

					'readonly'    => true,