<?php
/**
 * The REST route the block editor reads.
 *
 * @package LaunchList
 */

namespace LaunchList;

use WP_REST_Request;

defined( 'ABSPATH' ) || exit;

/**
 * `GET /wp-json/launchlist/v1/forms`: the workspace's forms and projects for the block's settings.
 * Anyone who can edit posts may read it; it never carries a secret or a site credential.
 */
class Rest {

	/**
	 * Register the route (on `rest_api_init`).
	 *
	 * @return void
	 */
	public static function register() {
		register_rest_route(
			'launchlist/v1',
			'/forms',
			array(
				'methods'             => 'GET',
				'callback'            => array( __CLASS__, 'forms' ),
				'permission_callback' => static function () {
					return current_user_can( 'edit_posts' );
				},
				'args'                => array(
					'refresh' => array(
						'type'    => 'boolean',
						'default' => false,
					),
				),
			)
		);
	}

	/**
	 * The forms and projects. `can_manage` says whether this user may connect the site and refresh
	 * the list (`refresh=1`, administrators only).
	 *
	 * @param WP_REST_Request $request The request.
	 * @return array{connected: bool, available: bool, can_manage: bool, forms: array, projects: array}
	 */
	public static function forms( $request ) {
		$can_manage = current_user_can( 'manage_options' );

		if ( ! Connection::is_active() ) {
			return array(
				'connected'  => false,
				'available'  => false,
				'can_manage' => $can_manage,
				'forms'      => array(),
				'projects'   => array(),
			);
		}

		$refresh = $can_manage && is_object( $request ) && method_exists( $request, 'get_param' ) && $request->get_param( 'refresh' );
		$list    = Forms::get( (bool) $refresh );

		if ( null === $list ) {
			return array(
				'connected'  => true,
				'available'  => false,
				'can_manage' => $can_manage,
				'forms'      => array(),
				'projects'   => array(),
			);
		}

		return array(
			'connected'  => true,
			'available'  => true,
			'can_manage' => $can_manage,
			'forms'      => array_map(
				static function ( $form ) {
					return array(
						'id'      => $form['id'],
						'name'    => $form['name'],
						'project' => $form['project'],
					);
				},
				$list['forms']
			),
			'projects'   => $list['projects'],
		);
	}
}