<?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();

  $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'],

  						$_POST['itemSourceName'],
  						(!empty($_POST['expirationDate']) ? new \DateTime($_POST['expirationDate']) : null)

  					);
  
  					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'])) {

  				try {
  					$return = OCP\Share::setExpirationDate($_POST['itemType'], $_POST['itemSource'], $_POST['date']);
  					($return) ? OC_JSON::success() : OC_JSON::error();
  				} catch (\Exception $e) {
  					OC_JSON::error(array('data' => array('message' => $e->getMessage())));
  				}

  			}
  			break;

  		case 'informRecipients':

  			$l = OC_L10N::get('core');

  			$shareType = (int) $_POST['shareType'];
  			$itemType = $_POST['itemType'];
  			$itemSource = $_POST['itemSource'];
  			$recipient = $_POST['recipient'];

  
  			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()));

  			$mailNotification = new OC\Share\MailNotifications();
  			$result = $mailNotification->sendInternalShareMail($recipientList, $itemSource, $itemType);

  
  			\OCP\Share::setSendMailStatus($itemType, $itemSource, $shareType, true);

  			if (empty($result)) {

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

  								implode(', ', $result)

  								)
  						)
  					));
  			}
  			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':
  			// read post variables

  			$link = $_POST['link'];
  			$file = $_POST['file'];
  			$to_address = $_POST['toaddress'];

  			$mailNotification = new \OC\Share\MailNotifications();

  			$expiration = null;
  			if (isset($_POST['expiration']) && $_POST['expiration'] !== '') {
  				try {
  					$date = new DateTime($_POST['expiration']);

  					$expiration = $date->getTimestamp();

  				} catch (Exception $e) {
  					\OCP\Util::writeLog('sharing', "Couldn't read date: " . $e->getMessage(), \OCP\Util::ERROR);
  				}
  
  			}

  			$result = $mailNotification->sendLinkShareMail($to_address, $file, $link, $expiration);
  			if(empty($result)) {
  				\OCP\JSON::success();

  			} else {

  				$l = OC_L10N::get('core');

  				OCP\JSON::error(array(
  					'data' => array(
  						'message' => $l->t("Couldn't send mail to following users: %s ",

  								implode(', ', $result)

  							)
  					)

  				));
  			}

  			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 'getShareWithEmail':
  			$result = array();
  			if (isset($_GET['search'])) {
  				$cm = OC::$server->getContactsManager();
  				if (!is_null($cm) && $cm->isEnabled()) {
  					$contacts = $cm->search($_GET['search'], array('FN', 'EMAIL'));
  					foreach ($contacts as $contact) {
  						if (!isset($contact['EMAIL'])) {
  							continue;
  						}
  
  						$emails = $contact['EMAIL'];
  						if (!is_array($emails)) {
  							$emails = array($emails);
  						}
  
  						foreach($emails as $email) {
  							$result[] = array(
  								'id' => $contact['id'],
  								'email' => $email,
  								'displayname' => $contact['FN'],
  							);
  						}
  					}
  				}
  			}
  			OC_JSON::success(array('data' => $result));
  			break;

  		case 'getShareWith':
  			if (isset($_GET['search'])) {

  				$shareWithinGroupOnly = OC\Share\Share::shareWithGroupMembersOnly();

  				$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 ($shareWithinGroupOnly) {

  					$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 ($shareWithinGroupOnly) {

  						$users = OC_Group::DisplayNamesInGroups($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;
  	}
  }