<?php

/**
 * This file is part of the Froxlor project.
 * Copyright (c) 2010 the Froxlor Team (see authors).
 *
 * For the full copyright and license information, please view the COPYING
 * file that was distributed with this source code. You can also view the
 * COPYING file online at http://files.froxlor.org/misc/COPYING.txt
 *
 * @copyright  (c) the authors
 * @author     Froxlor team <team@froxlor.org> (2010-)
 * @license    GPLv2 http://files.froxlor.org/misc/COPYING.txt
 * @package    API
 * @since      0.10.0
 *
 */
class EmailForwarders extends ApiCommand implements ResourceEntity
{

	/**
	 * add new email-forwarder entry for given email-address by either id or email-address
	 *
	 * @param int $id
	 *        	optional, the email-address-id
	 * @param string $emailaddr
	 *        	optional, the email-address to add the forwarder for
	 * @param string $destination
	 *        	email-address to add as forwarder
	 * @param int $customerid
	 *        	optional, required when called as admin/reseller
	 *        	
	 * @access admin,customer
	 * @throws Exception
	 * @return array
	 */
	public function add()
	{
		if ($this->isAdmin() == false && Settings::IsInList('panel.customer_hide_options', 'email')) {
			throw new Exception("You cannot access this resource", 405);
		}
		
		if ($this->getUserDetail('email_forwarders_used') < $this->getUserDetail('email_forwarders') || $this->getUserDetail('email_forwarders') == '-1') {
			
			// parameter
			$id = $this->getParam('id', true, 0);
			$ea_optional = ($id <= 0 ? false : true);
			$emailaddr = $this->getParam('emailaddr', $ea_optional, '');
			$destination = $this->getParam('destination');
			
			// validation
			$idna_convert = new idna_convert_wrapper();
			$destination = $idna_convert->encode($destination);
			
			$result = $this->apiCall('Emails.get', array(
				'id' => $id,
				'emailaddr' => $emailaddr
			));
			$id = $result['id'];
			
			// current destination array
			$result['destination_array'] = explode(' ', $result['destination']);
			
			if (! validateEmail($destination)) {
				standard_error('destinationiswrong', $destination, true);
			} elseif ($destination == $result['email']) {
				standard_error('destinationalreadyexistasmail', $destination, true);
			} elseif (in_array($destination, $result['destination_array'])) {
				standard_error('destinationalreadyexist', $destination, true);
			}
			
			// get needed customer info to reduce the email-forwarder-counter by one
			$customer = $this->getCustomerData('email_forwarders');
			
			// add destination to address
			$result['destination'] .= ' ' . $destination;
			$stmt = Database::prepare("
				UPDATE `" . TABLE_MAIL_VIRTUAL . "` SET `destination` = :dest
				WHERE `customerid`= :cid AND `id`= :id
			");
			$params = array(
				"dest" => makeCorrectDestination($result['destination']),
				"cid" => $customer['customerid'],
				"id" => $id
			);
			Database::pexecute($stmt, $params, true, true);
			
			// update customer usage
			Customers::increaseUsage($customer['customerid'], 'email_forwarders_used');
			
			// update admin usage
			Admins::increaseUsage($customer['adminid'], 'email_forwarders_used');
			
			$this->logger()->logAction($this->isAdmin() ? ADM_ACTION : USR_ACTION, LOG_INFO, "[API] added email forwarder for '" . $result['email_full'] . "'");
			
			$result = $this->apiCall('Emails.get', array(
				'emailaddr' => $result['email_full']
			));
			return $this->response(200, "successfull", $result);
		}
		throw new Exception("No more resources available", 406);
	}

	public function get()
	{
		throw new Exception('You cannot directly get an email forwarder. You need to call Emails.get()', 303);
	}

	public function update()
	{
		throw new Exception('You cannot update an email forwarder. You need to delete the entry and create a new one.', 303);
	}

	public function listing()
	{
		throw new Exception('You cannot directly list email forwarders. You need to call Emails.listing()', 303);
	}

	/**
	 * delete email-forwarder entry for given email-address by either id or email-address and forwarder-id
	 *
	 * @param int $id
	 *        	optional, the email-address-id
	 * @param string $emailaddr
	 *        	optional, the email-address to add the forwarder for
	 * @param int $forwarderid
	 *        	id of the forwarder to delete
	 * @param int $customerid
	 *        	optional, required when called as admin/reseller
	 *        	
	 * @access admin,customer
	 * @throws Exception
	 * @return array
	 */
	public function delete()
	{
		if ($this->isAdmin() == false && Settings::IsInList('panel.customer_hide_options', 'email')) {
			throw new Exception("You cannot access this resource", 405);
		}
		
		if ($this->getUserDetail('email_forwarders_used') < $this->getUserDetail('email_forwarders') || $this->getUserDetail('email_forwarders') == '-1') {
			
			// parameter
			$id = $this->getParam('id', true, 0);
			$ea_optional = ($id <= 0 ? false : true);
			$emailaddr = $this->getParam('emailaddr', $ea_optional, '');
			$forwarderid = $this->getParam('forwarderid');
			
			// validation
			$result = $this->apiCall('Emails.get', array(
				'id' => $id,
				'emailaddr' => $emailaddr
			));
			$id = $result['id'];
			
			$result['destination'] = explode(' ', $result['destination']);
			if (isset($result['destination'][$forwarderid]) && $result['email'] != $result['destination'][$forwarderid]) {
				
				// get needed customer info to reduce the email-forwarder-counter by one
				$customer = $this->getCustomerData();
				
				// get specific forwarder
				$forwarder = $result['destination'][$forwarderid];
				// unset it from array
				unset($result['destination'][$forwarderid]);
				// rebuild destination-string
				$result['destination'] = implode(' ', $result['destination']);
				// update in DB
				$stmt = Database::prepare("
					UPDATE `" . TABLE_MAIL_VIRTUAL . "` SET `destination` = :dest
					WHERE `customerid`= :cid AND `id`= :id
				");
				$params = array(
					"dest" => makeCorrectDestination($result['destination']),
					"cid" => $customer['customerid'],
					"id" => $id
				);
				Database::pexecute($stmt, $params, true, true);
				
				$stmt = Database::prepare("UPDATE `" . TABLE_PANEL_CUSTOMERS . "`
						SET `email_forwarders_used` = `email_forwarders_used` - 1
						WHERE `customerid`= :cid");
				Database::pexecute($stmt, array(
					"cid" => $userinfo['customerid']
				));
				
				// update customer usage
				Customers::decreaseUsage($customer['customerid'], 'email_forwarders_used');
				
				// update admin usage
				Admins::decreaseUsage($customer['adminid'], 'email_forwarders_used');
				
				$this->logger()->logAction($this->isAdmin() ? ADM_ACTION : USR_ACTION, LOG_INFO, "[API] deleted email forwarder for '" . $result['email_full'] . "'");
				
				$result = $this->apiCall('Emails.get', array(
					'emailaddr' => $result['email_full']
				));
				return $this->response(200, "successfull", $result);
			}
			throw new Exception("Unknown forwarder id", 404);
		}
		throw new Exception("No more resources available", 406);
	}
}