<?php
  /**
  * ownCloud
  *
  * @author Michael Gapczynski
  * @copyright 2012 Michael Gapczynski mtgap@owncloud.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/>.
  */
  
  OC_JSON::checkLoggedIn();
  OCP\JSON::callCheck();
  OC_App::loadApps();

  $defaults = new \OCP\Defaults();

  if (isset($_POST['action']) && isset($_POST['itemType']) && isset($_POST['itemSource'])) {
  	switch ($_POST['action']) {
  		case 'share':
  			if (isset($_POST['shareType']) && isset($_POST['shareWith']) && isset($_POST['permissions'])) {
  				try {
  					$shareType = (int)$_POST['shareType'];
  					$shareWith = $_POST['shareWith'];
  					if ($shareType === OCP\Share::SHARE_TYPE_LINK && $shareWith == '') {
  						$shareWith = null;
  					}
  
  					$token = OCP\Share::shareItem(
  						$_POST['itemType'],
  						$_POST['itemSource'],
  						$shareType,
  						$shareWith,

  						$_POST['permissions'],
  						$_POST['itemSourceName']

  					);
  
  					if (is_string($token)) {
  						OC_JSON::success(array('data' => array('token' => $token)));
  					} else {
  						OC_JSON::success();
  					}
  				} catch (Exception $exception) {
  					OC_JSON::error(array('data' => array('message' => $exception->getMessage())));
  				}
  			}
  			break;
  		case 'unshare':
  			if (isset($_POST['shareType']) && isset($_POST['shareWith'])) {
  				if ((int)$_POST['shareType'] === OCP\Share::SHARE_TYPE_LINK && $_POST['shareWith'] == '') {
  					$shareWith = null;
  				} else {
  					$shareWith = $_POST['shareWith'];
  				}
  				$return = OCP\Share::unshare($_POST['itemType'], $_POST['itemSource'], $_POST['shareType'], $shareWith);
  				($return) ? OC_JSON::success() : OC_JSON::error();
  			}
  			break;
  		case 'setPermissions':
  			if (isset($_POST['shareType']) && isset($_POST['shareWith']) && isset($_POST['permissions'])) {
  				$return = OCP\Share::setPermissions(
  					$_POST['itemType'],
  					$_POST['itemSource'],
  					$_POST['shareType'],
  					$_POST['shareWith'],
  					$_POST['permissions']
  				);
  				($return) ? OC_JSON::success() : OC_JSON::error();
  			}
  			break;
  		case 'setExpirationDate':
  			if (isset($_POST['date'])) {
  				$return = OCP\Share::setExpirationDate($_POST['itemType'], $_POST['itemSource'], $_POST['date']);
  				($return) ? OC_JSON::success() : OC_JSON::error();
  			}
  			break;

  		case 'informRecipients':
  
  			$l = OC_L10N::get('core');
  
  			$shareType = (int) $_POST['shareType'];
  			$itemType = $_POST['itemType'];
  			$itemSource = $_POST['itemSource'];
  			$recipient = $_POST['recipient'];
  			$ownerDisplayName = \OCP\User::getDisplayName();
  			$from = \OCP\Util::getDefaultEmailAddress('sharing-noreply');
  
  			$noMail = array();
  			$recipientList = array();
  
  			if($shareType === \OCP\Share::SHARE_TYPE_USER) {
  				$recipientList[] = $recipient;
  			} elseif ($shareType === \OCP\Share::SHARE_TYPE_GROUP) {
  				$recipientList = \OC_Group::usersInGroup($recipient);
  			}
  
  			// don't send a mail to the user who shared the file
  			$recipientList = array_diff($recipientList, array(\OCP\User::getUser()));
  
  			// send mail to all recipients with an email address
  			foreach ($recipientList as $recipient) {
  				//get correct target folder name
  				$email = OC_Preferences::getValue($recipient, 'settings', 'email', '');
  
  				if ($email !== '') {
  					$displayName = \OCP\User::getDisplayName($recipient);
  					$items = \OCP\Share::getItemSharedWithUser($itemType, $itemSource, $recipient);
  					$filename = trim($items[0]['file_target'], '/');
  					$subject = (string)$l->t('%s shared »%s« with you', array($ownerDisplayName, $filename));
  					$expiration = null;
  					if (isset($items[0]['expiration'])) {

  						try {
  							$date = new DateTime($items[0]['expiration']);
  							$expiration = $l->l('date', $date->getTimestamp());
  						} catch (Exception $e) {
  							\OCP\Util::writeLog('sharing', "Couldn't read date: " . $e->getMessage(), \OCP\Util::ERROR);
  						}

  					}
  
  					if ($itemType === 'folder') {
  						$foldername = "/Shared/" . $filename;
  					} else {
  						// if it is a file we can just link to the Shared folder,
  						// that's the place where the user will find the file
  						$foldername = "/Shared";
  					}
  
  					$link = \OCP\Util::linkToAbsolute('files', 'index.php', array("dir" => $foldername));
  
  					$content = new OC_Template("core", "mail", "");
  					$content->assign('link', $link);
  					$content->assign('user_displayname', $ownerDisplayName);
  					$content->assign('filename', $filename);
  					$content->assign('expiration', $expiration);
  					$text = $content->fetchPage();
  
  					$content = new OC_Template("core", "altmail", "");
  					$content->assign('link', $link);
  					$content->assign('user_displayname', $ownerDisplayName);
  					$content->assign('filename', $filename);
  					$content->assign('expiration', $expiration);
  					$alttext = $content->fetchPage();
  
  					$default_from = OCP\Util::getDefaultEmailAddress('sharing-noreply');
  					$from = OCP\Config::getUserValue(\OCP\User::getUser(), 'settings', 'email', $default_from);
  
  					// send it out now
  					try {
  						OCP\Util::sendMail($email, $displayName, $subject, $text, $from, $ownerDisplayName, 1, $alttext);
  					} catch (Exception $exception) {
  						$noMail[] = \OCP\User::getDisplayName($recipient);
  					}
  				}
  			}
  
  			\OCP\Share::setSendMailStatus($itemType, $itemSource, $shareType, true);
  
  			if (empty($noMail)) {
  				OCP\JSON::success();
  			} else {
  				OCP\JSON::error(array(
  					'data' => array(
  						'message' => $l->t("Couldn't send mail to following users: %s ",
  								implode(', ', $noMail)
  								)
  						)
  					));
  			}
  			break;
  		case 'informRecipientsDisabled':
  			$itemSource = $_POST['itemSource'];
  			$shareType = $_POST['shareType'];
  			$itemType = $_POST['itemType'];
  			$recipient = $_POST['recipient'];
  			\OCP\Share::setSendMailStatus($itemType, $itemSource, $shareType, false);
  			OCP\JSON::success();
  			break;

  		case 'email':

  			// enable l10n support
  			$l = OC_L10N::get('core');

  			// read post variables
  			$user = OCP\USER::getUser();
  			$displayName = OCP\User::getDisplayName();
  			$type = $_POST['itemType'];
  			$link = $_POST['link'];
  			$file = $_POST['file'];
  			$to_address = $_POST['toaddress'];

  			$expiration = null;
  			if (isset($_POST['expiration']) && $_POST['expiration'] !== '') {
  				try {
  					$date = new DateTime($_POST['expiration']);
  					$expiration = $l->l('date', $date->getTimestamp());
  				} catch (Exception $e) {
  					\OCP\Util::writeLog('sharing', "Couldn't read date: " . $e->getMessage(), \OCP\Util::ERROR);
  				}
  
  			}

  
  			// setup the email

  			$subject = (string)$l->t('%s shared »%s« with you', array($displayName, $file));

  			$content = new OC_Template("core", "mail", "");
  			$content->assign ('link', $link);
  			$content->assign ('type', $type);
  			$content->assign ('user_displayname', $displayName);
  			$content->assign ('filename', $file);

  			$content->assign('expiration', $expiration);

  			$text = $content->fetchPage();

  			$content = new OC_Template("core", "altmail", "");
  			$content->assign ('link', $link);
  			$content->assign ('type', $type);
  			$content->assign ('user_displayname', $displayName);
  			$content->assign ('filename', $file);

  			$content->assign('expiration', $expiration);

  			$alttext = $content->fetchPage();

  
  			$default_from = OCP\Util::getDefaultEmailAddress('sharing-noreply');
  			$from_address = OCP\Config::getUserValue($user, 'settings', 'email', $default_from );
  
  			// send it out now

  			$rs = explode(' ', $to_address);
  			$failed = array();
  			foreach ($rs as $r) {
  				try {
  					\OCP\Util::sendMail($r, $r, $subject, $text, $from_address, $displayName, 1, $alttext);
  				} catch (\Exception $e) {
  					\OCP\Util::writeLog('sharing', "Can't send mail with public link to $r: " . $e->getMessage(), \OCP\Util::ERROR);
  					$failed[] = $r;
  				}

  			}

  
  			if (empty($failed)) {
  				OCP\JSON::success();
  			} else {
  				OCP\JSON::error(array(
  					'data' => array(
  						'message' => $l->t("Couldn't send mail to following users: %s ",
  								implode(', ', $failed)
  							)
  					)
  				));			}

  			break;
  	}
  } else if (isset($_GET['fetch'])) {
  	switch ($_GET['fetch']) {
  		case 'getItemsSharedStatuses':
  			if (isset($_GET['itemType'])) {
  				$return = OCP\Share::getItemsShared($_GET['itemType'], OCP\Share::FORMAT_STATUSES);
  				is_array($return) ? OC_JSON::success(array('data' => $return)) : OC_JSON::error();
  			}
  			break;
  		case 'getItem':
  			if (isset($_GET['itemType'])
  				&& isset($_GET['itemSource'])
  				&& isset($_GET['checkReshare'])
  				&& isset($_GET['checkShares'])) {
  				if ($_GET['checkReshare'] == 'true') {
  					$reshare = OCP\Share::getItemSharedWithBySource(
  						$_GET['itemType'],
  						$_GET['itemSource'],
  						OCP\Share::FORMAT_NONE,
  						null,
  						true
  					);
  				} else {
  					$reshare = false;
  				}
  				if ($_GET['checkShares'] == 'true') {
  					$shares = OCP\Share::getItemShared(
  						$_GET['itemType'],
  						$_GET['itemSource'],
  						OCP\Share::FORMAT_NONE,
  						null,
  						true
  					);
  				} else {
  					$shares = false;
  				}
  				OC_JSON::success(array('data' => array('reshare' => $reshare, 'shares' => $shares)));
  			}
  			break;
  		case 'getShareWith':
  			if (isset($_GET['search'])) {
  				$sharePolicy = OC_Appconfig::getValue('core', 'shareapi_share_policy', 'global');
  				$shareWith = array();
  // 				if (OC_App::isEnabled('contacts')) {
  // 					// TODO Add function to contacts to only get the 'fullname' column to improve performance
  // 					$ids = OC_Contacts_Addressbook::activeIds();
  // 					foreach ($ids as $id) {
  // 						$vcards = OC_Contacts_VCard::all($id);
  // 						foreach ($vcards as $vcard) {
  // 							$contact = $vcard['fullname'];
  // 							if (stripos($contact, $_GET['search']) !== false
  // 								&& (!isset($_GET['itemShares'])
  // 								|| !isset($_GET['itemShares'][OCP\Share::SHARE_TYPE_CONTACT])
  // 								|| !is_array($_GET['itemShares'][OCP\Share::SHARE_TYPE_CONTACT])
  // 								|| !in_array($contact, $_GET['itemShares'][OCP\Share::SHARE_TYPE_CONTACT]))) {
  // 								$shareWith[] = array('label' => $contact, 'value' => array('shareType' => 5, 'shareWith' => $vcard['id']));
  // 							}
  // 						}
  // 					}
  // 				}
  				$groups = OC_Group::getGroups($_GET['search']);
  				if ($sharePolicy == 'groups_only') {
  					$usergroups = OC_Group::getUserGroups(OC_User::getUser());
  					$groups = array_intersect($groups, $usergroups);
  				}
  				$count = 0;
  				$users = array();
  				$limit = 0;
  				$offset = 0;
  				while ($count < 15 && count($users) == $limit) {
  					$limit = 15 - $count;
  					if ($sharePolicy == 'groups_only') {
  						$users = OC_Group::DisplayNamesInGroups($usergroups, $_GET['search'], $limit, $offset);
  					} else {
  						$users = OC_User::getDisplayNames($_GET['search'], $limit, $offset);
  					}
  					$offset += $limit;
  					foreach ($users as $uid => $displayName) {
  						if ((!isset($_GET['itemShares'])
  							|| !is_array($_GET['itemShares'][OCP\Share::SHARE_TYPE_USER])
  							|| !in_array($uid, $_GET['itemShares'][OCP\Share::SHARE_TYPE_USER]))
  							&& $uid != OC_User::getUser()) {
  							$shareWith[] = array(
  								'label' => $displayName,

  								'value' => array(
  									'shareType' => OCP\Share::SHARE_TYPE_USER,
  									'shareWith' => $uid)

  							);
  							$count++;
  						}
  					}
  				}
  				$count = 0;

  
  				// enable l10n support
  				$l = OC_L10N::get('core');

  				foreach ($groups as $group) {
  					if ($count < 15) {
  						if (!isset($_GET['itemShares'])
  							|| !isset($_GET['itemShares'][OCP\Share::SHARE_TYPE_GROUP])
  							|| !is_array($_GET['itemShares'][OCP\Share::SHARE_TYPE_GROUP])
  							|| !in_array($group, $_GET['itemShares'][OCP\Share::SHARE_TYPE_GROUP])) {
  							$shareWith[] = array(

  								'label' => $group,

  								'value' => array(
  									'shareType' => OCP\Share::SHARE_TYPE_GROUP,
  									'shareWith' => $group
  								)
  							);
  							$count++;
  						}
  					} else {
  						break;
  					}
  				}

  				$sorter = new \OC\Share\SearchResultSorter($_GET['search'],
  														   'label',
  														   new \OC\Log());
  				usort($shareWith, array($sorter, 'sort'));

  				OC_JSON::success(array('data' => $shareWith));
  			}
  			break;
  	}
  }