<?php

require_once __DIR__.'/../init.php';

use Utopia\App;
use Utopia\Swoole\Request;
use Appwrite\Utopia\Response;
use Utopia\View;
use Utopia\Exception;
use Utopia\Config\Config;
use Utopia\Domains\Domain;
use Appwrite\Auth\Auth;
use Appwrite\Network\Validator\Origin;
use Appwrite\Utopia\Response\Filters\V06;
use Appwrite\Utopia\Response\Filters\V07;
use Appwrite\Utopia\Response\Filters\V08;
use Utopia\CLI\Console;
use Utopia\Database\Document;
use Utopia\Database\Query;
use Utopia\Database\Validator\Authorization;

Config::setParam('domainVerification', false);
Config::setParam('cookieDomain', 'localhost');
Config::setParam('cookieSamesite', Response::COOKIE_SAMESITE_NONE);

App::init(function ($utopia, $request, $response, $console, $project, $dbForConsole, $user, $locale, $clients) {
    /** @var Utopia\Swoole\Request $request */
    /** @var Appwrite\Utopia\Response $response */
    /** @var Utopia\Database\Database $dbForConsole */
    /** @var Utopia\Database\Document $console */
    /** @var Utopia\Database\Document $project */
    /** @var Utopia\Database\Document $user */
    /** @var Utopia\Locale\Locale $locale */
    /** @var array $clients */

    $domain = $request->getHostname();
    $domains = Config::getParam('domains', []);
    if (!array_key_exists($domain, $domains)) {
        $domain = new Domain(!empty($domain) ? $domain : '');

        if (empty($domain->get()) || !$domain->isKnown() || $domain->isTest()) {
            $domains[$domain->get()] = false;
            Console::warning($domain->get() . ' is not a publicly accessible domain. Skipping SSL certificate generation.');
        } else {
            Authorization::disable();

            $certificate = $dbForConsole->findOne('certificates', [
                new Query('domain', QUERY::TYPE_EQUAL, [$domain->get()])
            ]);

            if (empty($certificate)) {
                $certificate = new Document([
                    'domain' => $domain->get(),
                ]);
                $certificate = $dbForConsole->createDocument('certificates', $certificate);

                Console::info('Issuing a TLS certificate for the master domain (' . $domain->get() . ') in a few seconds...');

                Resque::enqueue('v1-certificates', 'CertificatesV1', [
                    'document' => $certificate,
                    'domain' => $domain->get(),
                    'validateTarget' => false,
                    'validateCNAME' => false,
                ]);
            }

            $domains[$domain->get()] = true;

            Authorization::reset(); // ensure authorization is re-enabled
        }
        Config::setParam('domains', $domains);
    }

    $localeParam = (string)$request->getParam('locale', $request->getHeader('x-appwrite-locale', ''));

    if (\in_array($localeParam, Config::getParam('locale-codes'))) {
        $locale->setDefault($localeParam);
    };

    $route = $utopia->match($request);

    if ($project->isEmpty()) {
        throw new Exception('Project not found', 404);
    }

    if (!empty($route->getLabel('sdk.auth', [])) && $project->isEmpty() && ($route->getLabel('scope', '') !== 'public')) {
        throw new Exception('Missing or unknown project ID', 400);
    }

    $referrer = $request->getReferer();
    $origin = \parse_url($request->getOrigin($referrer), PHP_URL_HOST);
    $protocol = \parse_url($request->getOrigin($referrer), PHP_URL_SCHEME);
    $port = \parse_url($request->getOrigin($referrer), PHP_URL_PORT);

    $refDomain = (!empty($protocol) ? $protocol : $request->getProtocol()).'://'.((\in_array($origin, $clients))
        ? $origin : 'localhost').(!empty($port) ? ':'.$port : '');
    
    $refDomain = (!$route->getLabel('origin', false))  // This route is publicly accessible
        ? $refDomain
        : (!empty($protocol) ? $protocol : $request->getProtocol()).'://'.$origin.(!empty($port) ? ':'.$port : '');

    $selfDomain = new Domain($request->getHostname());
    $endDomain = new Domain((string)$origin);

    // var_dump('referer', $referrer);
    // var_dump('origin', $origin);
    // var_dump('port', $request->getPort());
    // var_dump('hostname', $request->getHostname());
    // var_dump('protocol', $request->getProtocol());
    // var_dump('method', $request->getMethod());
    // var_dump('ip', $request->getIP());
    // var_dump('-----------------');
    // var_dump($request->debug());

    Config::setParam('domainVerification',
        ($selfDomain->getRegisterable() === $endDomain->getRegisterable()) &&
            $endDomain->getRegisterable() !== '');
        
    Config::setParam('cookieDomain', (
        $request->getHostname() === 'localhost' ||
        $request->getHostname() === 'localhost:'.$request->getPort() ||
        (\filter_var($request->getHostname(), FILTER_VALIDATE_IP) !== false)
    )
        ? null
        : '.'.$request->getHostname()
    );

    /* 
     * Response format
     */
    $responseFormat = $request->getHeader('x-appwrite-response-format', App::getEnv('_APP_SYSTEM_RESPONSE_FORMAT', ''));
    if ($responseFormat) {
        switch($responseFormat) {
            case version_compare ($responseFormat , '0.6.2', '<=') :
                Response::setFilter(new V06());
                break;
            case version_compare ($responseFormat , '0.7.2', '<=') :
                Response::setFilter(new V07());
                break;
            case version_compare ($responseFormat , '0.8.0', '<=') :
                Response::setFilter(new V08());
                break;
            default:
                Response::setFilter(null);
        }
    } else {
        Response::setFilter(null);
    }

    /*
     * Security Headers
     *
     * As recommended at:
     * @see https://www.owasp.org/index.php/List_of_useful_HTTP_headers
     */
    if (App::getEnv('_APP_OPTIONS_FORCE_HTTPS', 'disabled') === 'enabled') { // Force HTTPS
        if ($request->getProtocol() !== 'https') {
            return $response->redirect('https://'.$request->getHostname().$request->getURI());
        }

        $response->addHeader('Strict-Transport-Security', 'max-age='.(60 * 60 * 24 * 126)); // 126 days
    }

    $response
        ->addHeader('Server', 'Appwrite')
        ->addHeader('X-Content-Type-Options', 'nosniff')
        ->addHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, PATCH, DELETE')
        ->addHeader('Access-Control-Allow-Headers', 'Origin, Cookie, Set-Cookie, X-Requested-With, Content-Type, Access-Control-Allow-Origin, Access-Control-Request-Headers, Accept, X-Appwrite-Project, X-Appwrite-Key, X-Appwrite-Locale, X-Appwrite-Mode, X-Appwrite-JWT, X-Appwrite-Response-Format, X-SDK-Version, Cache-Control, Expires, Pragma')
        ->addHeader('Access-Control-Expose-Headers', 'X-Fallback-Cookies')
        ->addHeader('Access-Control-Allow-Origin', $refDomain)
        ->addHeader('Access-Control-Allow-Credentials', 'true')
    ;

    /*
     * Validate Client Domain - Check to avoid CSRF attack
     *  Adding Appwrite API domains to allow XDOMAIN communication
     *  Skip this check for non-web platforms which are not required to send an origin header
     */
    $origin = $request->getOrigin($request->getReferer(''));
    $originValidator = new Origin(\array_merge($project->getAttribute('platforms', []), $console->getAttribute('platforms', [])));

    if (!$originValidator->isValid($origin)
        && \in_array($request->getMethod(), [Request::METHOD_POST, Request::METHOD_PUT, Request::METHOD_PATCH, Request::METHOD_DELETE])
        && $route->getLabel('origin', false) !== '*'
        && empty($request->getHeader('x-appwrite-key', ''))) {
        throw new Exception($originValidator->getDescription(), 403);
    }
    
    /*
     * ACL Check
     */
    $role = ($user->isEmpty()) ? Auth::USER_ROLE_GUEST : Auth::USER_ROLE_MEMBER;

    // Add user roles
    $memberships = $user->find('teamId', $project->getAttribute('teamId', null), 'memberships');

    if ($memberships) {
        foreach ($memberships->getAttribute('roles', []) as $memberRole) {
            switch ($memberRole) {
                case 'owner':
                    $role = Auth::USER_ROLE_OWNER;
                    break;
                case 'admin':
                    $role = Auth::USER_ROLE_ADMIN;
                    break;
                case 'developer':
                    $role = Auth::USER_ROLE_DEVELOPER;
                    break;
            }
        }
    }

    $roles = Config::getParam('roles', []);
    $scope = $route->getLabel('scope', 'none'); // Allowed scope for chosen route
    $scopes = $roles[$role]['scopes']; // Allowed scopes for user role

    $authKey = $request->getHeader('x-appwrite-key', '');

    if (!empty($authKey)) { // API Key authentication
        // Check if given key match project API keys
        $key = $project->find('secret', $authKey, 'keys');
            
        /*
         * Try app auth when we have project key and no user
         *  Mock user to app and grant API key scopes in addition to default app scopes
         */
        if ($key && $user->isEmpty()) {
            $user = new Document([
                '$id' => '',
                'status' => true,
                'email' => 'app.'.$project->getId().'@service.'.$request->getHostname(),
                'password' => '',
                'name' => $project->getAttribute('name', 'Untitled'),
            ]);

            $role = Auth::USER_ROLE_APP;
            $scopes = \array_merge($roles[$role]['scopes'], $key->getAttribute('scopes', []));

            Authorization::setDefaultStatus(false);  // Cancel security segmentation for API keys.
        }
    }

    if ($user->getId()) {
        Authorization::setRole('user:'.$user->getId());
    }

    Authorization::setRole('role:'.$role);

    \array_map(function ($node) {
        if (isset($node['teamId']) && isset($node['roles'])) {
            Authorization::setRole('team:'.$node['teamId']);

            foreach ($node['roles'] as $nodeRole) { // Set all team roles
                Authorization::setRole('team:'.$node['teamId'].'/'.$nodeRole);
            }
        }
    }, $user->getAttribute('memberships', []));

    $service = $route->getLabel('sdk.namespace','');
    if(!empty($service)) {
        if(array_key_exists($service, $project->getAttribute('services',[]))
            && !$project->getAttribute('services',[])[$service]
            && !Auth::isPrivilegedUser(Authorization::$roles)) {
            throw new Exception('Service is disabled', 503);
        }
    }

    if (!\in_array($scope, $scopes)) {
        if ($project->isEmpty()) { // Check if permission is denied because project is missing
            throw new Exception('Project not found', 404);
        }
        
        throw new Exception($user->getAttribute('email', 'User').' (role: '.\strtolower($roles[$role]['label']).') missing scope ('.$scope.')', 401);
    }

    if (false === $user->getAttribute('status')) { // Account is blocked
        throw new Exception('Invalid credentials. User is blocked', 401);
    }

    if ($user->getAttribute('reset')) {
        throw new Exception('Password reset is required', 412);
    }

}, ['utopia', 'request', 'response', 'console', 'project', 'dbForConsole', 'user', 'locale', 'clients']);

App::options(function ($request, $response) {
    /** @var Utopia\Swoole\Request $request */
    /** @var Appwrite\Utopia\Response $response */

    $origin = $request->getOrigin();

    $response
        ->addHeader('Server', 'Appwrite')
        ->addHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, PATCH, DELETE')
        ->addHeader('Access-Control-Allow-Headers', 'Origin, Cookie, Set-Cookie, X-Requested-With, Content-Type, Access-Control-Allow-Origin, Access-Control-Request-Headers, Accept, X-Appwrite-Project, X-Appwrite-Key, X-Appwrite-Locale, X-Appwrite-Mode, X-Appwrite-JWT, X-Appwrite-Response-Format, X-SDK-Version, Cache-Control, Expires, Pragma, X-Fallback-Cookies')
        ->addHeader('Access-Control-Expose-Headers', 'X-Fallback-Cookies')
        ->addHeader('Access-Control-Allow-Origin', $origin)
        ->addHeader('Access-Control-Allow-Credentials', 'true')
        ->noContent();
}, ['request', 'response']);

App::error(function ($error, $utopia, $request, $response, $layout, $project) {
    /** @var Exception $error */
    /** @var Utopia\App $utopia */
    /** @var Utopia\Swoole\Request $request */
    /** @var Appwrite\Utopia\Response $response */
    /** @var Utopia\View $layout */
    /** @var Utopia\Database\Document $project */

    if ($error instanceof PDOException) {
        throw $error;
    }

    $route = $utopia->match($request);
    $template = ($route) ? $route->getLabel('error', null) : null;

    if (php_sapi_name() === 'cli') {
        Console::error('[Error] Timestamp: '.date('c', time()));
        
        if($route) {
            Console::error('[Error] Method: '.$route->getMethod());
            Console::error('[Error] URL: '.$route->getPath());
        }
        
        Console::error('[Error] Type: '.get_class($error));
        Console::error('[Error] Message: '.$error->getMessage());
        Console::error('[Error] File: '.$error->getFile());
        Console::error('[Error] Line: '.$error->getLine());
    }

    $version = App::getEnv('_APP_VERSION', 'UNKNOWN');

    switch ($error->getCode()) { // Don't show 500 errors!
        case 400: // Error allowed publicly
        case 401: // Error allowed publicly
        case 402: // Error allowed publicly
        case 403: // Error allowed publicly
        case 404: // Error allowed publicly
        case 409: // Error allowed publicly
        case 412: // Error allowed publicly
        case 429: // Error allowed publicly
        case 501: // Error allowed publicly
        case 503: // Error allowed publicly
            $code = $error->getCode();
            $message = $error->getMessage();
            break;
        default:
            $code = 500; // All other errors get the generic 500 server error status code
            $message = 'Server Error';
    }

    //$_SERVER = []; // Reset before reporting to error log to avoid keys being compromised

    $output = ((App::isDevelopment())) ? [
        'message' => $error->getMessage(),
        'code' => $error->getCode(),
        'file' => $error->getFile(),
        'line' => $error->getLine(),
        'trace' => $error->getTrace(),
        'version' => $version,
    ] : [
        'message' => $message,
        'code' => $code,
        'version' => $version,
    ];

    $response
        ->addHeader('Cache-Control', 'no-cache, no-store, must-revalidate')
        ->addHeader('Expires', '0')
        ->addHeader('Pragma', 'no-cache')
        ->setStatusCode($code)
    ;

    if ($template) {
        $comp = new View($template);

        $comp
            ->setParam('development', App::isDevelopment())
            ->setParam('projectName', $project->getAttribute('name'))
            ->setParam('projectURL', $project->getAttribute('url'))
            ->setParam('message', $error->getMessage())
            ->setParam('code', $code)
            ->setParam('trace', $error->getTrace())
        ;

        $layout
            ->setParam('title', $project->getAttribute('name').' - Error')
            ->setParam('description', 'No Description')
            ->setParam('body', $comp)
            ->setParam('version', $version)
            ->setParam('litespeed', false)
        ;

        $response->html($layout->render());
    }

    $response->dynamic(new Document($output),
        $utopia->isDevelopment() ? Response::MODEL_ERROR_DEV : Response::MODEL_ERROR);
}, ['error', 'utopia', 'request', 'response', 'layout', 'project']);

App::get('/manifest.json')
    ->desc('Progressive app manifest file')
    ->label('scope', 'public')
    ->label('docs', false)
    ->inject('response')
    ->action(function ($response) {
        /** @var Appwrite\Utopia\Response $response */

        $response->json([
            'name' => APP_NAME,
            'short_name' => APP_NAME,
            'start_url' => '.',
            'url' => 'https://appwrite.io/',
            'display' => 'standalone',
            'background_color' => '#fff',
            'theme_color' => '#f02e65',
            'description' => 'End to end backend server for frontend and mobile apps. 👩‍💻👨‍💻',
            'icons' => [
                [
                    'src' => 'images/favicon.png',
                    'sizes' => '256x256',
                    'type' => 'image/png',
                ],
            ],
        ]);
    });

App::get('/robots.txt')
    ->desc('Robots.txt File')
    ->label('scope', 'public')
    ->label('docs', false)
    ->inject('response')
    ->action(function ($response) {
        $template = new View(__DIR__.'/../views/general/robots.phtml');
        $response->text($template->render(false));
    });

App::get('/humans.txt')
    ->desc('Humans.txt File')
    ->label('scope', 'public')
    ->label('docs', false)
    ->inject('response')
    ->action(function ($response) {
        $template = new View(__DIR__.'/../views/general/humans.phtml');
        $response->text($template->render(false));
    });

App::get('/.well-known/acme-challenge')
    ->desc('SSL Verification')
    ->label('scope', 'public')
    ->label('docs', false)
    ->inject('request')
    ->inject('response')
    ->action(function ($request, $response) {
        $base = \realpath(APP_STORAGE_CERTIFICATES);
        $path = \str_replace('/.well-known/acme-challenge/', '', $request->getURI());
        $absolute = \realpath($base.'/.well-known/acme-challenge/'.$path);

        if (!$base) {
            throw new Exception('Storage error', 500);
        }

        if (!$absolute) {
            throw new Exception('Unknown path', 404);
        }

        if (!\substr($absolute, 0, \strlen($base)) === $base) {
            throw new Exception('Invalid path', 401);
        }

        if (!\file_exists($absolute)) {
            throw new Exception('Unknown path', 404);
        }

        $content = @\file_get_contents($absolute);

        if (!$content) {
            throw new Exception('Failed to get contents', 500);
        }

        $response->text($content);
    });

include_once __DIR__ . '/shared/api.php';
include_once __DIR__ . '/shared/web.php';

foreach (Config::getParam('services', []) as $service) {
    include_once $service['controller'];
}
