<?php
/**
 * Setup wizard endpoints.
 *
 * @package SpaceBay
 */

namespace SpaceBay\Rest;

use SpaceBay\Auth\Auth;
use SpaceBay\Spaces\Membership;
use SpaceBay\Spaces\SpaceRepository;
use WP_REST_Request;
use WP_REST_Response;
use WP_REST_Server;

defined( 'ABSPATH' ) || exit;

/**
 * Creates starter spaces and remembers that setup is finished.
 */
final class SetupController extends Controller {

	/**
	 * Option that marks setup as finished.
	 *
	 * @var string
	 */
	const OPTION = 'spacebay_setup_done';

	/**
	 * Registers the routes.
	 *
	 * @return void
	 */
	public function register_routes() {
		register_rest_route(
			$this->namespace,
			'/admin/setup',
			array(
				array(
					'methods'             => WP_REST_Server::READABLE,
					'callback'            => array( $this, 'get_item' ),
					'permission_callback' => array( $this, 'permission_manage' ),
				),
				array(
					'methods'             => WP_REST_Server::CREATABLE,
					'callback'            => array( $this, 'create_item' ),
					'permission_callback' => array( $this, 'permission_manage' ),
					'args'                => array(
						'spaces' => array(
							'type'    => 'array',
							'items'   => array(
								'type' => 'string',
								'enum' => array_keys( self::starter_spaces() ),
							),
							'default' => array(),
						),
						'done'   => array(
							'type'    => 'boolean',
							'default' => true,
						),
					),
				),
			)
		);
	}

	/**
	 * Starter spaces offered by the wizard.
	 *
	 * @return array<string, array>
	 */
	public static function starter_spaces() {
		return array(
			'announcements' => array(
				'title'       => __( 'Announcements', 'spacebay' ),
				'description' => __( 'News and updates from the team.', 'spacebay' ),
				'settings'    => array(
					'icon'         => 'megaphone',
					'color'        => '#0f766e',
					'who_can_post' => 'admins',
				),
			),
			'general'       => array(
				'title'       => __( 'General', 'spacebay' ),
				'description' => __( 'Talk about anything with the community.', 'spacebay' ),
				'settings'    => array(
					'icon'  => 'chat',
					'color' => '#3f22ff',
				),
			),
			'introductions' => array(
				'title'       => __( 'Introductions', 'spacebay' ),
				'description' => __( 'New here? Say hello and tell us about yourself.', 'spacebay' ),
				'settings'    => array(
					'icon'  => 'wave',
					'color' => '#b45309',
				),
			),
		);
	}

	/**
	 * Setup state.
	 *
	 * @param WP_REST_Request $request Request.
	 * @return WP_REST_Response
	 */
	public function get_item( $request ) {
		unset( $request );

		$spaces = array();

		foreach ( self::starter_spaces() as $key => $space ) {
			$spaces[] = array(
				'key'         => $key,
				'title'       => $space['title'],
				'description' => $space['description'],
				'icon'        => $space['settings']['icon'],
			);
		}

		return rest_ensure_response(
			array(
				'done'               => (bool) get_option( self::OPTION ),
				'has_spaces'         => (bool) SpaceRepository::all( 'space' ),
				'starter'            => $spaces,
				'users_can_register' => (bool) get_option( 'users_can_register' ),
				'signup_open'        => '' !== Auth::signup_url(),
				'signup_pages'       => Auth::has_pages(),
			)
		);
	}

	/**
	 * Creates the chosen starter spaces and finishes setup.
	 *
	 * @param WP_REST_Request $request Request.
	 * @return WP_REST_Response
	 */
	public function create_item( $request ) {
		$user_id  = get_current_user_id();
		$starters = self::starter_spaces();
		$created  = array();
		$existing = wp_list_pluck( SpaceRepository::all( 'space' ), 'title' );

		foreach ( array_unique( (array) $request['spaces'] ) as $key ) {
			if ( ! isset( $starters[ $key ] ) || in_array( $starters[ $key ]['title'], $existing, true ) ) {
				continue;
			}

			$id = SpaceRepository::create(
				array_merge(
					$starters[ $key ],
					array(
						'type'    => 'space',
						'privacy' => 'public',
					)
				),
				$user_id
			);

			if ( $id ) {
				Membership::set( $id, $user_id, 'admin', 'active' );

				/** This action is documented in includes/Rest/SpacesController.php */
				do_action( 'spacebay_space_created', $id, $user_id );
				$created[] = $id;
			}
		}

		if ( $request['done'] ) {
			update_option( self::OPTION, 1, false );
		}

		return rest_ensure_response(
			array(
				'done'    => (bool) get_option( self::OPTION ),
				'created' => $created,
			)
		);
	}
}