<?php

require_once dirname(dirname(__FILE__)).'/support/PhabricatorStartup.php';
PhabricatorStartup::didStartup();

try {
  PhabricatorStartup::loadCoreLibraries();

  PhabricatorEnv::initializeWebEnvironment();

  // This is the earliest we can get away with this, we need env config first.
  PhabricatorAccessLog::init();
  $access_log = PhabricatorAccessLog::getLog();
  if ($access_log) {
    PhabricatorStartup::setGlobal('log.access', $access_log);
    $access_log->setData(
      array(
        'R' => AphrontRequest::getHTTPHeader('Referer', '-'),
        'r' => idx($_SERVER, 'REMOTE_ADDR', '-'),
        'M' => idx($_SERVER, 'REQUEST_METHOD', '-'),
      ));
  }

  DarkConsoleXHProfPluginAPI::hookProfiler();

  PhutilErrorHandler::setErrorListener(
    array('DarkConsoleErrorLogPluginAPI', 'handleErrors'));

  $sink = new AphrontPHPHTTPSink();

  $response = PhabricatorSetupCheck::willProcessRequest();
  if ($response) {
    $sink->writeResponse($response);
    return;
  }

  $host = AphrontRequest::getHTTPHeader('Host');
  $path = $_REQUEST['__path__'];

  switch ($host) {
    default:
      $config_key = 'aphront.default-application-configuration-class';
      $application = PhabricatorEnv::newObjectFromConfig($config_key);
      break;
  }

  $application->setHost($host);
  $application->setPath($path);
  $application->willBuildRequest();
  $request = $application->buildRequest();

  // Until an administrator sets "phabricator.base-uri", assume it is the same
  // as the request URI. This will work fine in most cases, it just breaks down
  // when daemons need to do things.
  $request_protocol = ($request->isHTTPS() ? 'https' : 'http');
  $request_base_uri = "{$request_protocol}://{$host}/";
  PhabricatorEnv::setRequestBaseURI($request_base_uri);

  $write_guard = new AphrontWriteGuard(array($request, 'validateCSRF'));

  $application->setRequest($request);
  list($controller, $uri_data) = $application->buildController();

  if ($access_log) {
    $access_log->setData(
      array(
        'U' => (string)$request->getRequestURI()->getPath(),
        'C' => get_class($controller),
      ));
  }

  // If execution throws an exception and then trying to render that exception
  // throws another exception, we want to show the original exception, as it is
  // likely the root cause of the rendering exception.
  $original_exception = null;
  try {
    $response = $controller->willBeginExecution();

    if ($access_log) {
      if ($request->getUser() && $request->getUser()->getPHID()) {
        $access_log->setData(
          array(
            'u' => $request->getUser()->getUserName(),
          ));
      }
    }

    if (!$response) {
      $controller->willProcessRequest($uri_data);
      $response = $controller->processRequest();
    }
  } catch (AphrontRedirectException $ex) {
    $response = id(new AphrontRedirectResponse())
      ->setURI($ex->getURI());
  } catch (Exception $ex) {
    $original_exception = $ex;
    $response = $application->handleException($ex);
  }

  try {
    $response = $controller->didProcessRequest($response);
    $response = $application->willSendResponse($response, $controller);
    $response->setRequest($request);

    $sink->writeResponse($response);

  } catch (Exception $ex) {
    $write_guard->dispose();
    if ($access_log) {
      $access_log->write();
    }
    if ($original_exception) {
      $ex = new PhutilAggregateException(
        "Multiple exceptions during processing and rendering.",
        array(
          $original_exception,
          $ex,
        ));
    }
    PhabricatorStartup::didFatal('[Rendering Exception] '.$ex->getMessage());
  }

  $write_guard->dispose();

  if ($access_log) {
    $request_start = PhabricatorStartup::getStartTime();
    $access_log->setData(
      array(
        'c' => $response->getHTTPResponseCode(),
        'T' => (int)(1000000 * (microtime(true) - $request_start)),
      ));
    $access_log->write();
  }

  if (DarkConsoleXHProfPluginAPI::isProfilerRequested()) {
    $profile = DarkConsoleXHProfPluginAPI::stopProfiler();
    $profile_sample = id(new PhabricatorXHProfSample())
      ->setFilePHID($profile);
    if (empty($_REQUEST['__profile__'])) {
      $sample_rate = PhabricatorEnv::getEnvConfig('debug.profile-rate');
    } else {
      $sample_rate = 0;
    }
    $profile_sample->setSampleRate($sample_rate);
    if ($access_log) {
      $profile_sample->setUsTotal($access_log->getData('T'))
        ->setHostname($access_log->getData('h'))
        ->setRequestPath($access_log->getData('U'))
        ->setController($access_log->getData('C'))
        ->setUserPHID($request->getUser()->getPHID());
    }
    $profile_sample->save();
  }

} catch (Exception $ex) {
  PhabricatorStartup::didFatal("[Exception] ".$ex->getMessage());
}