<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Controller
 * @subpackage Zend_Controller_Action_Helper
 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 * @version    $Id: Url.php 20096 2010-01-06 02:05:09Z bkarwin $
 */

/**
 * @see Zend_Controller_Action_Helper_Abstract
 */
require_once 'Zend/Controller/Action/Helper/Abstract.php';

/**
 * Helper for creating URLs for redirects and other tasks
 *
 * @uses       Zend_Controller_Action_Helper_Abstract
 * @category   Zend
 * @package    Zend_Controller
 * @subpackage Zend_Controller_Action_Helper
 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Controller_Action_Helper_Url extends Zend_Controller_Action_Helper_Abstract
{
    /**
     * Create URL based on default route
     *
     * @param  string $action
     * @param  string $controller
     * @param  string $module
     * @param  array  $params
     * @return string
     */
    public function simple($action, $controller = null, $module = null, array $params = null)
    {
        $request = $this->getRequest();

        if (null === $controller) {
            $controller = $request->getControllerName();
        }

        if (null === $module) {
            $module = $request->getModuleName();
        }

        $url = $controller . '/' . $action;
        if ($module != $this->getFrontController()->getDispatcher()->getDefaultModule()) {
            $url = $module . '/' . $url;
        }

        if ('' !== ($baseUrl = $this->getFrontController()->getBaseUrl())) {
            $url = $baseUrl . '/' . $url;
        }

        if (null !== $params) {
            $paramPairs = array();
            foreach ($params as $key => $value) {
                $paramPairs[] = urlencode($key) . '/' . urlencode($value);
            }
            $paramString = implode('/', $paramPairs);
            $url .= '/' . $paramString;
        }

        $url = '/' . ltrim($url, '/');

        return $url;
    }

    /**
     * Assembles a URL based on a given route
     *
     * This method will typically be used for more complex operations, as it
     * ties into the route objects registered with the router.
     *
     * @param  array   $urlOptions Options passed to the assemble method of the Route object.
     * @param  mixed   $name       The name of a Route to use. If null it will use the current Route
     * @param  boolean $reset
     * @param  boolean $encode
     * @return string Url for the link href attribute.
     */
    public function url($urlOptions = array(), $name = null, $reset = false, $encode = true)
    {
        $router = $this->getFrontController()->getRouter();
        return $router->assemble($urlOptions, $name, $reset, $encode);
    }

    /**
     * Perform helper when called as $this->_helper->url() from an action controller
     *
     * Proxies to {@link simple()}
     *
     * @param  string $action
     * @param  string $controller
     * @param  string $module
     * @param  array  $params
     * @return string
     */
    public function direct($action, $controller = null, $module = null, array $params = null)
    {
        return $this->simple($action, $controller, $module, $params);
    }
}
