<?php
/**
 * Plugin lifecycle and wiring. Activation never contacts Waitlistize.
 *
 * @package Waitlistize
 */

namespace Waitlistize;

use Waitlistize\Admin\Menu;
use Waitlistize\Auth\ConnectionManager;
use Waitlistize\Auth\TokenStore;
use Waitlistize\Auth\Mutex;
use Waitlistize\Rest\ConnectionController;

final class Plugin {
	public static function boot(): void {
		add_action( 'init', array( new \Waitlistize\Rendering\Embeds(), 'register' ) );
		add_filter( 'wp_insert_post_data', array( new \Waitlistize\Rendering\Embeds(), 'save' ), 10, 2 );
		add_action( 'rest_api_init', array( new \Waitlistize\Rest\ServicesController(), 'register' ) );
		add_action( 'rest_api_init', array( new \Waitlistize\Rest\AdminController(), 'register' ) );
		add_action( 'admin_post_waitlistize_defaults', array( new \Waitlistize\Admin\DisplayDefaults(), 'save' ) );
		add_action( 'admin_post_waitlistize_embed_draft', array( new \Waitlistize\Admin\ServicesPage(), 'draft' ) );
		add_action( 'admin_menu', array( new Menu(), 'register' ) );
		add_action( 'rest_api_init', array( new ConnectionController(), 'register' ) );
		add_action( 'rest_api_init', array( new \Waitlistize\Rest\PublicBookingController(), 'register' ) );
		// phpcs:ignore WordPress.WP.CronInterval.CronSchedulesInterval -- Five-minute checks renew 15-minute access tokens before expiry.
		add_filter( 'cron_schedules', array( self::class, 'schedules' ) );
		add_action( ConnectionManager::CRON, static fn () => ( new ConnectionManager() )->check() );
	}

	public static function schedules( array $schedules ): array {
		$schedules['waitlistize_five_minutes'] = array(
			// phpcs:ignore WordPress.WP.CronInterval.CronSchedulesInterval -- L1 access tokens expire in 15 minutes; renew with a safety margin.
			'interval' => 300,
			'display'  => __( 'Every five minutes (Waitlistize)', 'waitlistize' ),
		);
		return $schedules;
	}

	public static function activate( bool $network_wide = false ): void {
		// Activation can load this file after plugins_loaded has already fired.
		// phpcs:ignore WordPress.WP.CronInterval.CronSchedulesInterval -- Restore approved connections with the required refresh margin.
		add_filter( 'cron_schedules', array( self::class, 'schedules' ) );
		self::each_site(
			$network_wide,
			static function (): void {
				( new Mutex() )->run(
					static function (): void {
						$store = new TokenStore();
						$state = $store->read();
						if ( ! $store->disabled() && in_array( $state['status'], array( 'connected', 'offline' ), true ) && ! wp_next_scheduled( ConnectionManager::CRON ) ) {
							wp_schedule_event( time() + 300, 'waitlistize_five_minutes', ConnectionManager::CRON );
						}
					}
				);
			}
		);
	}

	public static function deactivate( bool $network_wide = false ): void {
		self::each_site( $network_wide, static fn () => wp_clear_scheduled_hook( ConnectionManager::CRON ) );
	}

	private static function each_site( bool $network_wide, callable $callback ): void {
		if ( is_multisite() && $network_wide ) {
			$offset = 0;
			do {
				$sites = get_sites(
					array(
						'fields' => 'ids',
						'number' => 100,
						'offset' => $offset,
					)
				);
				foreach ( $sites as $site_id ) {
					switch_to_blog( (int) $site_id );
					$callback();
					restore_current_blog();
				}
				$offset += 100;
				$count   = count( $sites );
			} while ( 100 === $count );
		} else {
			$callback();
		}
	}
}