<?php
/**
 * Main plugin singleton â€“ wires together services on boot.
 *
 * @package WPAG
 */

declare(strict_types=1);

namespace WPAG;

use WPAG\Admin\Menu;
use WPAG\Admin\RestController;
use WPAG\Database\ScansRepository;
use WPAG\Database\StatementsRepository;
use WPAG\Statement\Generator as StatementGenerator;
use WPAG\Support\Container;

defined( 'ABSPATH' ) || exit;

final class Plugin {

	private static ?Plugin $instance = null;

	private Container $container;

	private bool $booted = false;

	public static function instance(): Plugin {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}
		return self::$instance;
	}

	private function __construct() {
		$this->container = new Container();
		$this->register_bindings();
	}

	private function register_bindings(): void {
		$this->container->bind( ScansRepository::class, static fn (): ScansRepository => new ScansRepository() );
		$this->container->bind( StatementsRepository::class, static fn (): StatementsRepository => new StatementsRepository() );
		$this->container->bind( StatementGenerator::class, static fn (): StatementGenerator => new StatementGenerator() );
		$this->container->bind(
			RestController::class,
			static fn ( Container $c ): RestController => new RestController(
				$c->get( ScansRepository::class ),
				$c->get( StatementsRepository::class ),
				$c->get( StatementGenerator::class )
			)
		);
	}

	public function container(): Container {
		return $this->container;
	}

	public function boot(): void {
		if ( $this->booted ) {
			return;
		}
		$this->booted = true;

		// Admin surface.
		if ( is_admin() ) {
			$this->container->get( Menu::class )->register();
		}

		// REST API.
		add_action(
			'rest_api_init',
			function (): void {
				$this->container->get( RestController::class )->register_routes();
			}
		);

		do_action( 'wpag_booted', $this );
	}
}