<?php
/**
 * Site administrator reads; isolated from editor and anonymous booking routes.
 *
 * @package Waitlistize
 */
namespace Waitlistize\Rest;

use Waitlistize\Api\AdminBookings;
use Waitlistize\Api\Services;
use Waitlistize\Auth\ConnectionManager;
use WP_Error;
use WP_REST_Request;
use WP_REST_Response;

final class AdminController {
	public function register(): void {
		foreach ( array( 'bookings', 'overview' ) as $action ) {
			register_rest_route(
				'waitlistize/v1',
				'/admin/' . $action,
				array(
					'methods'             => 'GET',
					'permission_callback' => array( new ConnectionController(), 'permission' ),
					'callback'            => array( $this, $action ),
				)
			);
		}
	}

	private function params( WP_REST_Request $request ): array {
		$params = $request->get_query_params();
		unset( $params['rest_route'], $params['_locale'] );
		return $params;
	}

	public function bookings( WP_REST_Request $request ): WP_REST_Response {
		return $this->response( ( new AdminBookings() )->catalog( $this->params( $request ) ) );
	}

	public function overview( WP_REST_Request $request ): WP_REST_Response {
		if ( $this->params( $request ) ) {
			return $this->response( AdminBookings::error( 400 ) );
		}
		$status = ( new ConnectionManager() )->status();
		if ( is_wp_error( $status ) ) {
			return $this->response( $status );
		}
		$result     = array(
			'connection' => $status,
			'counts'     => null,
			'api'        => 'unavailable',
			'plan'       => null,
		);
		$account_id = (int) ( $status['account']['id'] ?? 0 );
		$counts     = array(
			'single' => 0,
			'group'  => 0,
		);
		$api        = new Services();
		for ( $page = 1; $page <= 20 && $account_id; ++$page ) {
			$catalog = $api->catalog( $account_id, $page, 100 );
			if ( is_wp_error( $catalog ) ) {
				break;
			}
			foreach ( $catalog['data'] as $service ) {
				if ( isset( $counts[ $service['type'] ] ) ) {
					++$counts[ $service['type'] ];
				}
			}
			if ( $page >= $catalog['meta']['last_page'] ) {
				$result['counts'] = $counts;
				$result['api']    = 'available';
				break;
			}
		}
		return $this->response( $result );
	}

	private function response( array|WP_Error $data ): WP_REST_Response {
		$response = is_wp_error( $data ) ? rest_convert_error_to_response( $data ) : new WP_REST_Response( $data );
		$response->header( 'Cache-Control', 'no-store, private' );
		$response->header( 'Pragma', 'no-cache' );
		return $response;
	}
}