<?php
  
  /**
   * ownCloud - ajax frontend
   *
   * @author Robin Appelman
   * @copyright 2010 Robin Appelman icewind1991@gmail.com
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
   * License as published by the Free Software Foundation; either
   * version 3 of the License, or any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
   *
   * You should have received a copy of the GNU Affero General Public
   * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
   *
   */
  
  // Check if we are a user
  OCP\User::checkLoggedIn();
  
  // Load the files we need
  OCP\Util::addStyle('files', 'files');

  OCP\Util::addStyle('files', 'upload');

  OCP\Util::addscript('files', 'file-upload');
  OCP\Util::addscript('files', 'jquery.iframe-transport');
  OCP\Util::addscript('files', 'jquery.fileupload');
  OCP\Util::addscript('files', 'jquery-visibility');
  OCP\Util::addscript('files', 'filelist');
  
  OCP\App::setActiveNavigationEntry('files_index');
  // Load the files
  $dir = isset($_GET['dir']) ? stripslashes($_GET['dir']) : '';

  $dir = \OC\Files\Filesystem::normalizePath($dir);

  // Redirect if directory does not exist
  if (!\OC\Files\Filesystem::is_dir($dir . '/')) {
  	header('Location: ' . OCP\Util::getScriptName() . '');
  	exit();
  }

  $isIE8 = false;
  preg_match('/MSIE (.*?);/', $_SERVER['HTTP_USER_AGENT'], $matches);
  if (count($matches) > 0 && $matches[1] <= 8){
  	$isIE8 = true;
  }
  
  // if IE8 and "?dir=path" was specified, reformat the URL to use a hash like "#?dir=path"
  if ($isIE8 && isset($_GET['dir'])){
  	if ($dir === ''){
  		$dir = '/';

  	}

  	header('Location: ' . OCP\Util::linkTo('files', 'index.php') . '#?dir=' . \OCP\Util::encodePath($dir));
  	exit();

  }

  $ajaxLoad = false;

  $files = array();
  $user = OC_User::getUser();
  if (\OC\Files\Cache\Upgrade::needUpgrade($user)) { //dont load anything if we need to upgrade the cache

  	$needUpgrade = true;
  	$freeSpace = 0;
  } else {

  	if ($isIE8){
  		// after the redirect above, the URL will have a format
  		// like "files#?dir=path" which means that no path was given
  		// (dir is not set). In that specific case, we don't return any
  		// files because the client will take care of switching the dir
  		// to the one from the hash, then ajax-load the initial file list
  		$files = array();
  		$ajaxLoad = true;
  	}
  	else{
  		$files = \OCA\Files\Helper::getFiles($dir);
  	}

  	$freeSpace = \OC\Files\Filesystem::free_space($dir);
  	$needUpgrade = false;
  }

  
  // Make breadcrumb

  $breadcrumb = \OCA\Files\Helper::makeBreadcrumb($dir);

  
  // make breadcrumb und filelist markup
  $list = new OCP\Template('files', 'part.list', '');
  $list->assign('files', $files);
  $list->assign('baseURL', OCP\Util::linkTo('files', 'index.php') . '?dir=');
  $list->assign('downloadURL', OCP\Util::linkToRoute('download', array('file' => '/')));

  $list->assign('isPublic', false);

  $breadcrumbNav = new OCP\Template('files', 'part.breadcrumb', '');
  $breadcrumbNav->assign('breadcrumb', $breadcrumb);
  $breadcrumbNav->assign('baseURL', OCP\Util::linkTo('files', 'index.php') . '?dir=');

  $permissions = \OCA\Files\Helper::getDirPermissions($dir);

  
  if ($needUpgrade) {
  	OCP\Util::addscript('files', 'upgrade');
  	$tmpl = new OCP\Template('files', 'upgrade', 'user');
  	$tmpl->printPage();
  } else {
  	// information about storage capacities
  	$storageInfo=OC_Helper::getStorageInfo($dir);
  	$maxUploadFilesize=OCP\Util::maxUploadFilesize($dir);
  	$publicUploadEnabled = \OC_Appconfig::getValue('core', 'shareapi_allow_public_upload', 'yes');

  	// if the encryption app is disabled, than everything is fine (INIT_SUCCESSFUL status code)
  	$encryptionInitStatus = 2;

  	if (OC_App::isEnabled('files_encryption')) {

  		$session = new \OCA\Encryption\Session(new \OC\Files\View('/'));
  		$encryptionInitStatus = $session->getInitialized();

  	}

  	$trashEnabled = \OCP\App::isEnabled('files_trashbin');
  	$trashEmpty = true;
  	if ($trashEnabled) {
  		$trashEmpty = \OCA\Files_Trashbin\Trashbin::isEmpty($user);
  	}
  
  	$isCreatable = \OC\Files\Filesystem::isCreatable($dir . '/');
  	$fileHeader = (!isset($files) or count($files) > 0);
  	$emptyContent = ($isCreatable and !$fileHeader) or $ajaxLoad;

  	OCP\Util::addscript('files', 'fileactions');
  	OCP\Util::addscript('files', 'files');
  	OCP\Util::addscript('files', 'keyboardshortcuts');
  	$tmpl = new OCP\Template('files', 'index', 'user');
  	$tmpl->assign('fileList', $list->fetchPage());
  	$tmpl->assign('breadcrumb', $breadcrumbNav->fetchPage());

  	$tmpl->assign('dir', $dir);
  	$tmpl->assign('isCreatable', $isCreatable);

  	$tmpl->assign('permissions', $permissions);
  	$tmpl->assign('files', $files);

  	$tmpl->assign('trash', $trashEnabled);
  	$tmpl->assign('trashEmpty', $trashEmpty);

  	$tmpl->assign('uploadMaxFilesize', $maxUploadFilesize);
  	$tmpl->assign('uploadMaxHumanFilesize', OCP\Util::humanFileSize($maxUploadFilesize));
  	$tmpl->assign('allowZipDownload', intval(OCP\Config::getSystemValue('allowZipDownload', true)));
  	$tmpl->assign('usedSpacePercent', (int)$storageInfo['relative']);
  	$tmpl->assign('isPublic', false);
  	$tmpl->assign('publicUploadEnabled', $publicUploadEnabled);

  	$tmpl->assign("encryptedFiles", \OCP\Util::encryptedFiles());
  	$tmpl->assign("mailNotificationEnabled", \OC_Appconfig::getValue('core', 'shareapi_allow_mail_notification', 'yes'));
  	$tmpl->assign("allowShareWithLink", \OC_Appconfig::getValue('core', 'shareapi_allow_links', 'yes'));
  	$tmpl->assign("encryptionInitStatus", $encryptionInitStatus);
  	$tmpl->assign('disableSharing', false);
  	$tmpl->assign('ajaxLoad', $ajaxLoad);
  	$tmpl->assign('emptyContent', $emptyContent);
  	$tmpl->assign('fileHeader', $fileHeader);

  	$tmpl->printPage();
  }