<?php
/**
 * In-memory notification template repository.
 *
 * @package Bookline
 */

declare( strict_types=1 );

namespace Bookline\Infrastructure\Notification;

use Bookline\Domain\Notification\NotificationTemplate;
use Bookline\Domain\Notification\NotificationTemplateRepository;

/**
 * Test double for templates.
 *
 * @since 0.1.0
 */
final class InMemoryNotificationTemplateRepository implements NotificationTemplateRepository {

	/**
	 * Templates.
	 *
	 * @var list<NotificationTemplate>
	 */
	private array $templates = [];

	/**
	 * Next id.
	 *
	 * @var int
	 */
	private int $next_id = 1;

	/**
	 * {@inheritDoc}
	 *
	 * @param string $key     Key.
	 * @param string $channel Channel.
	 * @param string $locale  Locale.
	 */
	public function find_by_key( string $key, string $channel = 'email', string $locale = 'en_GB' ): ?NotificationTemplate {
		foreach ( $this->templates as $template ) {
			if ( $template->key() === $key && $template->channel() === $channel && $template->locale() === $locale ) {
				return $template;
			}
		}
		return null;
	}

	/**
	 * {@inheritDoc}
	 *
	 * @param NotificationTemplate $template Template.
	 */
	public function save( NotificationTemplate $template ): void {
		if ( null === $template->id() ) {
			$template->assign_id( $this->next_id++ );
		}
		foreach ( $this->templates as $i => $existing ) {
			if ( $existing->id() === $template->id() ) {
				$this->templates[ $i ] = $template;
				return;
			}
		}
		$this->templates[] = $template;
	}

	/**
	 * {@inheritDoc}
	 *
	 * @return list<NotificationTemplate>
	 */
	public function all(): array {
		return $this->templates;
	}

	/**
	 * {@inheritDoc}
	 *
	 * @param int $id Id.
	 */
	public function find_by_id( int $id ): ?NotificationTemplate {
		foreach ( $this->templates as $template ) {
			if ( $template->id() === $id ) {
				return $template;
			}
		}
		return null;
	}
}