<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: Sebastian Krupinski <krupinski01@gmail.com>
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace KTXM\ProviderImapMail\Service\Remote;

use Gricob\IMAP\Client;
use KTXC\Server;
use KTXC\Logger\PlainFileLogger;
use KTXM\ProviderImapMail\Providers\Service;

/**
 * Static factory for IMAP remote service objects.
 *
 * - freshClient()  → builds a gricob Client from service config
 * - mailService()  → constructs a RemoteMailService from the client
 */
class RemoteService
{
    /**
     * Build a fully-configured IMAP client from a Service's location and identity.
     *
     * Handles STARTTLS: connects on plain TCP, sends STARTTLS, upgrades to TLS,
     * then authenticates — all before returning the client.
     */
    public static function freshClient(Service $service): Client
    {
        $location = $service->getLocation();
        $identity = $service->getIdentity();

        // Build a file logger when debug mode is enabled, otherwise pass null
        $logger = null;
        if ($service->getDebug()) {
            $logDir = Server::getInstance()?->logDir() ?? __DIR__ . '/../../../../../var/log';
            $logger = new PlainFileLogger($logDir . '/imap', $service->identifier());
        }

        $client = Client::create($location->toConfiguration(), $logger);
        $client->connect();

        if ($location->getEncryption() === 'starttls') {
            $client->startTls();
        }

        $client->logIn($identity->getIdentity(), $identity->getSecret());

        return $client;
    }

    /**
     * Build a RemoteMailService from a Service and a pre-authenticated client.
     *
     * The provider identifier and service ID are taken directly from the Service
     * object so the caller does not have to repeat them.
     */
    public static function mailService(Service $service, Client $client): RemoteMailService
    {
        return new RemoteMailService($client, $service->provider(), $service->identifier());
    }
}