<?php
/**
 * Plugin composition root.
 *
 * @package DevoynxRewards
 */

namespace Devoynx\Rewards;

use Devoynx\Rewards\Admin\Admin;
use Devoynx\Rewards\Database\LedgerRepository;
use Devoynx\Rewards\Database\Migrator;
use Devoynx\Rewards\Domain\LedgerService;
use Devoynx\Rewards\Domain\ExpiryProcessor;
use Devoynx\Rewards\Domain\RuleEngine;
use Devoynx\Rewards\Frontend\Wallet;
use Devoynx\Rewards\Frontend\EarningPreview;
use Devoynx\Rewards\Integrations\WooCommerce;
use Devoynx\Rewards\Privacy\Privacy;
use Devoynx\Rewards\Rest\WalletController;

defined( 'ABSPATH' ) || exit;

/** Composes Free modules and publishes shared extension points. */
final class Plugin {
	/**
	 * Plugin singleton instance.
	 *
	 * @var self|null
	 */
	private static $instance;

	/**
	 * Ledger service, available after successful boot.
	 *
	 * @var LedgerService|null
	 */
	private $ledger;

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

	/**
	 * Boot supported modules.
	 *
	 * @return void
	 */
	public function boot() {
		$requirements = new Requirements();
		if ( ! $requirements->is_satisfied() ) {
			$requirements->register_notice();
			return;
		}

		Migrator::maybe_upgrade();

		$repository   = new LedgerRepository();
		$this->ledger = new LedgerService( $repository );
		$rules        = new RuleEngine();
		Database\ProgramStore::maybe_upgrade();
		$backfill = new Programs\Backfill( $this->ledger );
		$backfill->register();
		( new Programs\Recognition() )->register();
		( new Programs\BasicEmails() )->register();
		( new Programs\Referrals( $this->ledger ) )->register();
		( new Programs\ReferralsUI( new Programs\Referrals( $this->ledger ) ) )->register();
		( new Programs\GuestClaims( $this->ledger ) )->register();
		( new Programs\GuestClaimsUI( new Programs\GuestClaims( $this->ledger ) ) )->register();
		( new Programs\SpinUI( new Programs\Spin( $this->ledger ) ) )->register();
		( new \Devoynx\Rewards\Admin\ProgramTools( $backfill ) )->register();

		( new ExpiryProcessor( $this->ledger, $repository ) )->register();
		( new WooCommerce( $this->ledger, $rules ) )->register();
		( new EarningPreview( $rules, $this->ledger ) )->register();
		( new Wallet( $this->ledger ) )->register();
		( new Admin( $this->ledger, $repository ) )->register();
		( new WalletController( $this->ledger, $repository ) )->register();
		( new Privacy( $repository ) )->register();
		( new \Devoynx\Rewards\Privacy\ProgramPrivacy() )->register();
		( new \Devoynx\Rewards\Privacy\GuestPrivacy() )->register();
		( new \Devoynx\Rewards\Privacy\ReferralPrivacy() )->register();

		/**
		 * Fires after the Free plugin has registered its stable extension points.
		 *
		 * @param Plugin        $plugin Plugin instance.
		 * @param LedgerService $ledger Ledger service.
		 */
		do_action( 'devoynx_rewards_loaded', $this, $this->ledger );
	}

	/**
	 * Access the shared ledger service for documented integrations.
	 *
	 * @return LedgerService|null
	 */
	public function ledger() {
		return $this->ledger;
	}
}