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

defined( 'ABSPATH' ) || exit;

/**
 * Wires services together.
 */
final class EVLFL_Plugin {

	const LOGS_PAGE     = 'evl-enrollment-logs';
	const SETTINGS_PAGE = 'evl-logs-settings';

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

	/**
	 * Repository.
	 *
	 * @var EVLFL_Logger
	 */
	private $logger;

	/**
	 * Admin emails.
	 *
	 * @var EVLFL_Notifier
	 */
	private $notifier;

	/**
	 * Retention and privacy tools.
	 *
	 * @var EVLFL_Data_Lifecycle
	 */
	private $lifecycle;

	/**
	 * LearnDash integration.
	 *
	 * @var EVLFL_LearnDash
	 */
	private $learndash;

	/**
	 * Get instance (boots on first call).
	 *
	 * @return EVLFL_Plugin
	 */
	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
			self::$instance->boot();
		}
		return self::$instance;
	}

	/**
	 * Capability required to view logs. Single source of truth.
	 *
	 * @return string
	 */
	public static function capability() {
		$cap = apply_filters( 'evlfl_capability', 'manage_options' );
		return ( is_string( $cap ) && '' !== $cap ) ? $cap : 'manage_options';
	}

	/**
	 * Boot services.
	 *
	 * @return void
	 */
	private function boot() {
		// Run migrations on upgrade (cheap autoloaded option compare).
		EVLFL_Database::maybe_upgrade();

		$this->logger    = new EVLFL_Logger();
		$manager         = new EVLFL_Event_Manager(
			new EVLFL_Event_Detector(),
			new EVLFL_Source_Detector(),
			new EVLFL_Event_Verifier(),
			$this->logger
		);
		$this->learndash = new EVLFL_LearnDash( $manager );
		$this->learndash->init();

		$this->notifier = new EVLFL_Notifier( $this->logger );
		$this->notifier->init();
		$this->lifecycle = new EVLFL_Data_Lifecycle( $this->logger );
		$this->lifecycle->init();

		if ( is_admin() ) {
			require_once EVLFL_PLUGIN_DIR . 'includes/class-test-data.php';
			require_once EVLFL_PLUGIN_DIR . 'admin/class-log-details.php';
			require_once EVLFL_PLUGIN_DIR . 'admin/class-settings-page.php';
			require_once EVLFL_PLUGIN_DIR . 'admin/class-admin.php';
			$admin = new EVLFL_Admin( $this->logger, new EVLFL_Settings_Page( $this->notifier ) );
			$admin->init();
		}
	}
}