<?php
/**
 * Plugin bootstrap.
 *
 * @package Unbreak
 */

namespace Unbreak;

use Unbreak\Admin\Digest;
use Unbreak\Admin\Page;
use Unbreak\Admin\RestController;
use Unbreak\Check\CheckRunner;
use Unbreak\Fix\BulkActions;
use Unbreak\Install\Lifecycle;
use Unbreak\Queue\ContentWatcher;
use Unbreak\Queue\FullScan;
use Unbreak\Queue\Jobs;
use Unbreak\Queue\Maintenance;
use Unbreak\Redirects\NotFoundLogger;
use Unbreak\Redirects\Redirector;
use Unbreak\Support\Settings;

defined( 'ABSPATH' ) || exit;

/**
 * Wires every component to WordPress hooks.
 */
final class Plugin {

	/**
	 * Singleton instance.
	 *
	 * @var Plugin|null
	 */
	private static $instance = null;

	/**
	 * Whether boot() already ran.
	 *
	 * @var bool
	 */
	private $booted = false;

	/**
	 * Singleton accessor.
	 */
	public static function instance(): Plugin {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	/**
	 * Register hooks. Safe to call more than once.
	 */
	public function boot(): void {
		if ( $this->booted ) {
			return;
		}
		$this->booted = true;

		add_action( 'init', array( Lifecycle::class, 'maybe_update_schema' ), 1 );
		add_action( 'switch_blog', array( Settings::class, 'flush' ) );

		( new Jobs() )->register();
		( new FullScan() )->register();
		( new ContentWatcher() )->register();
		( new CheckRunner() )->register();
		( new BulkActions() )->register();
		( new Digest() )->register();
		( new Maintenance() )->register();
		( new RestController() )->register();
		( new Redirector() )->register();
		( new NotFoundLogger() )->register();

		if ( is_admin() ) {
			( new Page() )->register();
		}
	}
}