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<?php
/**
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 *
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * This program 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, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */
namespace OCA\DAV\CardDAV;

use OCA\DAV\CardDAV\Sharing\IShareableAddressBook;
use Sabre\DAV\Exception\NotFound;

class AddressBook extends \Sabre\CardDAV\AddressBook implements IShareableAddressBook {

	public function __construct(CardDavBackend $carddavBackend, array $addressBookInfo) {
		parent::__construct($carddavBackend, $addressBookInfo);
	}

	/**
	 * Updates the list of shares.
	 *
	 * The first array is a list of people that are to be added to the
	 * addressbook.
	 *
	 * Every element in the add array has the following properties:
	 *   * href - A url. Usually a mailto: address
	 *   * commonName - Usually a first and last name, or false
	 *   * summary - A description of the share, can also be false
	 *   * readOnly - A boolean value
	 *
	 * Every element in the remove array is just the address string.
	 *
	 * @param array $add
	 * @param array $remove
	 * @return void
	 */
	function updateShares(array $add, array $remove) {
		/** @var CardDavBackend $carddavBackend */
		$carddavBackend = $this->carddavBackend;
		$carddavBackend->updateShares($this->getName(), $add, $remove);
	}

	/**
	 * Returns the list of people whom this addressbook is shared with.
	 *
	 * Every element in this array should have the following properties:
	 *   * href - Often a mailto: address
	 *   * commonName - Optional, for example a first + last name
	 *   * status - See the Sabre\CalDAV\SharingPlugin::STATUS_ constants.
	 *   * readOnly - boolean
	 *   * summary - Optional, a description for the share
	 *
	 * @return array
	 */
	function getShares() {
		/** @var CardDavBackend $carddavBackend */
		$carddavBackend = $this->carddavBackend;
		$carddavBackend->getShares($this->getName());
	}

	function getACL() {
		$acl = parent::getACL();
		if ($this->getOwner() === 'principals/system/system') {
			$acl[] = [
					'privilege' => '{DAV:}read',
					'principal' => '{DAV:}authenticated',
					'protected' => true,
			];
		}

		return $acl;
	}

	function getChildACL() {
		$acl = parent::getChildACL();
		if ($this->getOwner() === 'principals/system/system') {
			$acl[] = [
					'privilege' => '{DAV:}read',
					'principal' => '{DAV:}authenticated',
					'protected' => true,
			];
		}

		return $acl;
	}

	function getChild($name) {
		$obj = $this->carddavBackend->getCard($this->addressBookInfo['id'], $name);
		if (!$obj) {
			throw new NotFound('Card not found');
		}
		return new Card($this->carddavBackend, $this->addressBookInfo, $obj);
	}

}