<?php
/**
 * Core plugin bootstrap / service locator.
 *
 * @package NoorSMTP
 */

namespace NoorWork\NoorSMTP;

use NoorWork\NoorSMTP\Admin\SettingsPage;
use NoorWork\NoorSMTP\Admin\Ajax;
use NoorWork\NoorSMTP\Admin\Upsell;
use NoorWork\NoorSMTP\Modules\ModuleManager;
use NoorWork\NoorSMTP\Log\LogRepository;
use NoorWork\NoorSMTP\Mailer;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Class Plugin
 */
final class Plugin {

	/**
	 * Singleton instance.
	 *
	 * @var Plugin|null
	 */
	private static $instance = null;

	/**
	 * Module manager instance.
	 *
	 * @var ModuleManager
	 */
	private $module_manager;

	/**
	 * Log repository instance.
	 *
	 * @var LogRepository
	 */
	private $log_repository;

	/**
	 * Get the singleton instance.
	 *
	 * @return Plugin
	 */
	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
		}

		return self::$instance;
	}

	/**
	 * Private constructor.
	 */
	private function __construct() {
		$this->log_repository = new LogRepository();
		$this->module_manager  = new ModuleManager( $this->log_repository );
	}

	/**
	 * Boot the plugin.
	 *
	 * @return void
	 */
	public function boot() {
		$mailer = new Mailer( $this->module_manager, $this->log_repository );
		$mailer->register();

		/**
		 * Discover extensions (built-in add-ons + marketplace plugins like
		 * NoorSMTP Pro) once every plugin has had a chance to hook
		 * `plugins_loaded`, then boot whichever modules are active and wire
		 * up the admin UI/AJAX against the now-complete module list.
		 */
		add_action( 'init', array( $this, 'finish_boot' ), 5 );
	}

	/**
	 * Runs on `init`, after all plugins' `plugins_loaded` callbacks have had
	 * a chance to register extensions via `noorsmtp_register_extension`.
	 *
	 * @return void
	 */
	public function finish_boot() {
		$this->module_manager->discover_extensions();
		$this->module_manager->boot_active_modules();

		if ( is_admin() ) {
			$settings_page = new SettingsPage( $this->module_manager );
			$settings_page->register();

			$ajax = new Ajax( $this->module_manager, $this->log_repository, $settings_page );
			$ajax->register();

			( new Upsell() )->register();
		}
	}

	/**
	 * Get the module manager.
	 *
	 * @return ModuleManager
	 */
	public function modules() {
		return $this->module_manager;
	}

	/**
	 * Get the log repository.
	 *
	 * @return LogRepository
	 */
	public function logs() {
		return $this->log_repository;
	}
}