<?php

declare(strict_types=1);

namespace WebCalendar\WP;

defined( 'ABSPATH' ) || exit;

/**
 * Manages notifications using templates.
 *
 * Emails are queued for deferred sending via EmailQueue rather than
 * sent synchronously, keeping REST responses fast.
 */
class NotificationManager {

	/**
	 * Notify participants about an event.
	 *
	 * @param \WebCalendar\Core\Domain\Entity\Event  $event        Event entity.
	 * @param array<\WebCalendar\Core\Domain\Entity\User> $participants List of user entities.
	 */
	public function notify_participants( \WebCalendar\Core\Domain\Entity\Event $event, array $participants ): void {
		$container = Container::get_instance();
		/** @var EmailQueue */
		$queue = $container->get( 'email_queue' );
		/** @var \WebCalendar\WP\Bridge\WpEmailTemplate */
		$template = $container->get( 'email_template' );

		foreach ( $participants as $user ) {
			$subject = $template->get_invitation_subject( $event );
			$body    = $template->get_invitation_body( $event, $user );
			$queue->enqueue( $user->email(), $subject, $body );
		}
	}
}