<?php
/**
 * REST route for the current user's display preferences.
 *
 * @package TurtleReport
 */

namespace TurtleReport\Rest;

use TurtleReport\Access\Capabilities;
use TurtleReport\Admin\Shell;

defined( 'ABSPATH' ) || exit;

/**
 * Saves the colour theme and sidebar state chosen in the app shell, per user.
 */
final class PreferencesController {

	/**
	 * Registers routes.
	 *
	 * @return void
	 */
	public function register_routes() {
		register_rest_route(
			ReportController::NAMESPACE_V1,
			'/me/preferences',
			array(
				'methods'             => \WP_REST_Server::EDITABLE,
				'callback'            => array( $this, 'save' ),
				'permission_callback' => static function () {
					return current_user_can( Capabilities::VIEW_REPORTS );
				},
				'args'                => array(
					'theme'   => array(
						'type' => 'string',
						'enum' => Shell::THEMES,
					),
					'sidebar' => array(
						'type' => 'string',
						'enum' => Shell::SIDEBARS,
					),
				),
			)
		);
	}

	/**
	 * Stores whichever preferences were sent.
	 *
	 * @param \WP_REST_Request $request Request.
	 * @return \WP_REST_Response
	 */
	public function save( \WP_REST_Request $request ) {
		$user_id = get_current_user_id();
		if ( null !== $request['theme'] ) {
			update_user_meta( $user_id, Shell::THEME_META, (string) $request['theme'] );
		}
		if ( null !== $request['sidebar'] ) {
			update_user_meta( $user_id, Shell::SIDEBAR_META, (string) $request['sidebar'] );
		}
		return rest_ensure_response(
			array(
				'theme'   => Shell::theme( $user_id ),
				'sidebar' => Shell::collapsed( $user_id ) ? 'collapsed' : 'expanded',
			)
		);
	}
}