<?php
declare(strict_types=1);

// increase memory limit to 2GB
ini_set('memory_limit', '2048M');

// set max execution time to 2h just in case of a very slow internet connection
ini_set('max_execution_time', '7200');

// Log whole log messages
ini_set('log_errors_max_len', '0');

// Path for the Twig compiled-template cache (created at container startup by start.sh)
const TWIG_CACHE_PATH = '/tmp/twig-cache';

use DI\Container;
use DI\NotFoundException;
use Slim\Csrf\Guard;
use Slim\Factory\AppFactory;
use Slim\Views\Twig;
use Slim\Views\TwigMiddleware;
use Psr\Http\Message\ResponseInterface as Response;
use Psr\Http\Message\ServerRequestInterface as Request;

require __DIR__ . '/../vendor/autoload.php';

$container = \AIO\DependencyInjection::GetContainer();
$dataConst = $container->get(\AIO\Data\DataConst::class);

// Create app
AppFactory::setContainer($container);
$app = AppFactory::create();
$responseFactory = $app->getResponseFactory();

// Register Middleware On Container
$container->set(Guard::class, function () use ($responseFactory) {
    $guard = new Guard($responseFactory);
    $guard->setPersistentTokenMode(true);
    return $guard;
});

// Register Middleware To Be Executed On All Routes

// Migrate from the old PHPSESSID cookie to the new __Host-Http-PHPSESSID cookie.
// This is needed because the session cookie was renamed in a previous release. Without this,
// users that were logged in before the update would be logged out after the container restarts.
$wasAuthenticated = false;
$oldSessionTimestamp = null;
if (!isset($_COOKIE['__Host-Http-PHPSESSID']) && isset($_COOKIE['PHPSESSID'])) {
    session_name('PHPSESSID');
    if (session_start(['save_path' => $dataConst->GetSessionDirectory(), 'use_strict_mode' => true])) {
        $wasAuthenticated = isset($_SESSION[\AIO\Auth\AuthManager::SESSION_KEY]) && $_SESSION[\AIO\Auth\AuthManager::SESSION_KEY] === true;
        $oldSessionTimestamp = isset($_SESSION['date_time']) ? (int)$_SESSION['date_time'] : null;
        // Do not destroy the old session: if the response carrying the new __Host-Http-PHPSESSID
        // cookie is lost (e.g., due to a 502 during a mastercontainer update), the client can
        // retry with the old PHPSESSID cookie and still be authenticated.
        session_write_close();
    }
}

session_start([
    "name" => "__Host-Http-PHPSESSID", // Set cookie prefix to prevent other pages from overwriting this cookie. See https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Set-Cookie#cookie_prefixes
    "save_path" => $dataConst->GetSessionDirectory(), // Where to save the session files
    "cookie_lifetime" => 0, // Delete the session cookie whenever the browser is closed. See https://www.php.net/manual/en/session.configuration.php#ini.session.cookie-lifetime
    "gc_maxlifetime" => 86400, // Delete sessions after 24 hours. See https://www.php.net/manual/en/session.configuration.php#ini.session.gc-maxlifetime
    "gc_probability" => 0, // Probability that the session cleanup starts. The sessions are cleaned up by a cron job instead, see /cron.sh. See https://www.php.net/manual/en/session.configuration.php#ini.session.gc-probability
    "gc_divisor" => 100, // gc_probability/gc_divisor = 0/100 = 0%, meaning that PHP will never run session GC itself (cron.sh handles cleanup instead). See https://www.php.net/manual/en/session.configuration.php#ini.session.gc-divisor
    "use_strict_mode" => true, // Only allow initialized session IDs. See https://www.php.net/manual/en/session.configuration.php#ini.session.use-strict-mode
    "cookie_secure" => true, // Only send cookies over https (not http). See https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Set-Cookie#secure
    "cookie_httponly" => true, // Block the cookie from being read with js in the browser, will still be send for fetch request triggered by js. See https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Set-Cookie#httponly
    "cookie_samesite" => "Lax", // Send the cookie with same-site requests and top-level cross-site navigations (e.g. redirect after token-based getlogin). "Strict" would block the session cookie on the redirect that follows a cross-site navigation, breaking the getlogin flow from Nextcloud's admin panel. See https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Set-Cookie#samesitesamesite-value
]);

if ($wasAuthenticated) {
    if ($oldSessionTimestamp !== null) {
        // Use MigrateAuthState to preserve the original login timestamp. This prevents the
        // session deduplicator from running and keeps the old PHPSESSID session file alive,
        // so the client can retry with the old cookie if the 502 response causes the new
        // __Host-Http-PHPSESSID cookie to not be received.
        $container->get(\AIO\Auth\AuthManager::class)->MigrateAuthState($oldSessionTimestamp);
    } else {
        $container->get(\AIO\Auth\AuthManager::class)->SetAuthState(true);
    }
}
$app->add(Guard::class);

// Create Twig
$twig = Twig::create(__DIR__ . '/../templates/', ['cache' => TWIG_CACHE_PATH]);
$app->add(TwigMiddleware::create($app, $twig));
$twig->addExtension(new \AIO\Twig\CsrfExtension($container->get(Guard::class)));

// Auth Middleware
$app->add(new \AIO\Middleware\AuthMiddleware($container->get(\AIO\Auth\AuthManager::class)));

// API
$app->post('/api/docker/watchtower', AIO\Controller\DockerController::class . ':StartWatchtowerContainer');
$app->get('/api/docker/getwatchtower', AIO\Controller\DockerController::class . ':StartWatchtowerContainer');
$app->post('/api/docker/start', AIO\Controller\DockerController::class . ':StartContainer');
$app->post('/api/docker/backup', AIO\Controller\DockerController::class . ':StartBackupContainerBackup');
$app->post('/api/docker/backup-check', AIO\Controller\DockerController::class . ':StartBackupContainerCheck');
$app->post('/api/docker/backup-list', AIO\Controller\DockerController::class . ':StartBackupContainerList');
$app->post('/api/docker/backup-check-repair', AIO\Controller\DockerController::class . ':StartBackupContainerCheckRepair');
$app->post('/api/docker/backup-test', AIO\Controller\DockerController::class . ':StartBackupContainerTest');
$app->post('/api/docker/restore', AIO\Controller\DockerController::class . ':StartBackupContainerRestore');
$app->post('/api/docker/stop', AIO\Controller\DockerController::class . ':StopContainer');
$app->post('/api/docker/backup-reset-location', AIO\Controller\DockerController::class . ':DeleteBorgBackupConfig');
$app->post('/api/docker/prune', AIO\Controller\DockerController::class . ':SystemPrune');
$app->get('/api/docker/logs', AIO\Controller\DockerController::class . ':GetLogs');
$app->post('/api/auth/login', AIO\Controller\LoginController::class . ':TryLogin');
$app->get('/api/auth/getlogin', AIO\Controller\LoginController::class . ':GetTryLogin');
$app->post('/api/auth/logout', AIO\Controller\LoginController::class . ':Logout');
$app->post('/api/configuration', \AIO\Controller\ConfigurationController::class . ':SetConfig');

// Views
$app->get('/containers', function (Request $request, Response $response, array $args) use ($container) {
    $view = Twig::fromRequest($request);
    $view->addExtension(new \AIO\Twig\ClassExtension());
    /** @var \AIO\Data\ConfigurationManager $configurationManager */
    $configurationManager = $container->get(\AIO\Data\ConfigurationManager::class);
    /** @var \AIO\Docker\DockerActionManager $dockerActionManager */
    $dockerActionManager = $container->get(\AIO\Docker\DockerActionManager::class);
    /** @var \AIO\Controller\DockerController $dockerController */
    $dockerController = $container->get(\AIO\Controller\DockerController::class);
    $dockerActionManager->ConnectMasterContainerToNetwork();
    $dockerController->StartDomaincheckContainer();

    // Check if bypass_mastercontainer_update is provided on the URL, a special developer mode to bypass a mastercontainer update and use local image.
    $params = $request->getQueryParams();
    $bypass_mastercontainer_update = isset($params['bypass_mastercontainer_update']);
    $bypass_container_update = isset($params['bypass_container_update']);
    $skip_domain_validation = isset($params['skip_domain_validation']);

    return $view->render($response, 'containers.twig', [
        'domain' => $configurationManager->domain,
        'apache_port' => $configurationManager->apachePort,
        'borg_backup_host_location' => $configurationManager->borgBackupHostLocation,
        'borg_remote_repo' => $configurationManager->borgRemoteRepo,
        'borg_public_key' => $configurationManager->getBorgPublicKey(),
        'nextcloud_password' => $configurationManager->getAndGenerateSecret('NEXTCLOUD_PASSWORD'),
        'containers' => (new \AIO\ContainerDefinitionFetcher($container->get(\AIO\Data\ConfigurationManager::class), $container))->FetchDefinition(),
        'borgbackup_password' => $configurationManager->getAndGenerateSecret('BORGBACKUP_PASSWORD'),
        'is_mastercontainer_update_available' => ( $bypass_mastercontainer_update ? false : $dockerActionManager->IsMastercontainerUpdateAvailable() ),
        'has_backup_run_once' => $configurationManager->hasBackupRunOnce(),
        'is_backup_container_running' => $dockerActionManager->isBackupContainerRunning(),
        'backup_exit_code' => $dockerActionManager->GetBackupcontainerExitCode(),
        'is_instance_restore_attempt' => $configurationManager->instanceRestoreAttempt,
        'borg_backup_mode' => $configurationManager->backupMode,
        'was_start_button_clicked' => $configurationManager->wasStartButtonClicked,
        'has_update_available' => $dockerActionManager->isAnyUpdateAvailable(),
        'last_backup_time' => $configurationManager->getLastBackupTime(),
        'backup_times' => $configurationManager->getBackupTimes(),
        'current_channel' => $dockerActionManager->GetCurrentChannel(),
        'is_clamav_enabled' => $configurationManager->isClamavEnabled,
        'is_onlyoffice_enabled' => $configurationManager->isOnlyofficeEnabled,
        'is_collabora_enabled' => $configurationManager->isCollaboraEnabled,
        'is_talk_enabled' => $configurationManager->isTalkEnabled,
        'borg_restore_password' => $configurationManager->borgRestorePassword,
        'daily_backup_time' => $configurationManager->getDailyBackupTime(),
        'is_daily_backup_running' => $configurationManager->isDailyBackupRunning(),
        'timezone' => $configurationManager->timezone,
        'skip_domain_validation' => $configurationManager->shouldDomainValidationBeSkipped($skip_domain_validation),
        'talk_port' => $configurationManager->talkPort,
        'collabora_dictionaries' => $configurationManager->collaboraDictionaries,
        'collabora_additional_options' => $configurationManager->collaboraAdditionalOptions,
        'automatic_updates' => $configurationManager->areAutomaticUpdatesEnabled(),
        'is_backup_section_enabled' => !$configurationManager->disableBackupSection,
        'is_imaginary_enabled' => $configurationManager->isImaginaryEnabled,
        'is_fulltextsearch_enabled' => $configurationManager->isFulltextsearchEnabled,
        'additional_backup_directories' => $configurationManager->getAdditionalBackupDirectoriesString(),
        'nextcloud_datadir' => $configurationManager->nextcloudDatadirMount,
        'nextcloud_mount' => $configurationManager->nextcloudMount,
        'nextcloud_upload_limit' => $configurationManager->nextcloudUploadLimit,
        'nextcloud_max_time' => $configurationManager->nextcloudMaxTime,
        'nextcloud_memory_limit' => $configurationManager->nextcloudMemoryLimit,
        'is_dri_device_enabled' => $configurationManager->nextcloudEnableDriDevice,
        'is_nvidia_gpu_enabled' => $configurationManager->enableNvidiaGpu,
        'is_talk_recording_enabled' => $configurationManager->isTalkRecordingEnabled,
        'is_docker_socket_proxy_enabled' => $configurationManager->isDockerSocketProxyEnabled,
        'is_harp_enabled' => $configurationManager->isHarpEnabled,
        'is_whiteboard_enabled' => $configurationManager->isWhiteboardEnabled,
        'community_containers' => $configurationManager->listAvailableCommunityContainers(),
        'community_containers_enabled' => $configurationManager->aioCommunityContainers,
        'bypass_container_update' => $bypass_container_update,
    ]);
})->setName('profile');
$app->get('/login', function (Request $request, Response $response, array $args) use ($container) {
    $view = Twig::fromRequest($request);
    /** @var \AIO\Docker\DockerActionManager $dockerActionManager */
    $dockerActionManager = $container->get(\AIO\Docker\DockerActionManager::class);
    return $view->render($response, 'login.twig', [
        'is_login_allowed' => $dockerActionManager->isLoginAllowed(),
    ]);
});
$app->get('/setup', function (Request $request, Response $response, array $args) use ($container) {
    $view = Twig::fromRequest($request);
    /** @var \AIO\Data\Setup $setup */
    $setup = $container->get(\AIO\Data\Setup::class);

    if(!$setup->CanBeInstalled()) {
        return $view->render(
            $response,
            'already-installed.twig'
        );
    }

    return $view->render(
        $response,
        'setup.twig',
        [
            'password' => $setup->Setup(),
        ]
    );
});
$app->get('/log', function (Request $request, Response $response, array $args) use ($container) {
    $params = $request->getQueryParams();
    $id = $params['id'] ?? '';
    if (!str_starts_with($id, 'nextcloud-aio-')) {
        throw new DI\NotFoundException();
    }
    $view = Twig::fromRequest($request);
    return $view->render($response, 'log.twig', ['id' => $id]);
});

// Auth Redirector
$app->get('/', function (\Psr\Http\Message\RequestInterface $request, Response $response, array $args) use ($container) {
    /** @var \AIO\Auth\AuthManager $authManager */
    $authManager = $container->get(\AIO\Auth\AuthManager::class);

    /** @var \AIO\Data\Setup $setup */
    $setup = $container->get(\AIO\Data\Setup::class);
    if($setup->CanBeInstalled()) {
        return $response
            ->withHeader('Location', 'setup')
            ->withStatus(302);
    }

    if($authManager->IsAuthenticated()) {
        return $response
            ->withHeader('Location', 'containers')
            ->withStatus(302);
    } else {
        return $response
            ->withHeader('Location', 'login')
            ->withStatus(302);
    }
});

// Default error handler
$errorMiddleware = $app->addErrorMiddleware(false, true, true);

// Set a custom Not Found handler, which doesn't pollute the app output with 404 errors.
$errorMiddleware->setErrorHandler(
    \Slim\Exception\HttpNotFoundException::class,
    function (Request $request, Throwable $exception, bool $displayErrorDetails) use ($app) {
        $response = $app->getResponseFactory()->createResponse();
        $response->getBody()->write('Not Found');
        return $response->withStatus(404);
    }
);

// Set another custom error handler, which doesn't pollute the app output with 405 errors.
$errorMiddleware->setErrorHandler(
    \Slim\Exception\HttpMethodNotAllowedException::class,
    function (Request $request, Throwable $exception, bool $displayErrorDetails) use ($app) {
        $response = $app->getResponseFactory()->createResponse();
        $response->getBody()->write('Method not allowed');
        return $response->withStatus(405);
    }
);

$app->run();