<?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_Tool

 * @subpackage Framework

 * @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: Config.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * @category   Zend

 * @package    Zend_Tool

 * @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_Tool_Framework_Client_Config

{

    protected $_configFilepath = null;

    /**

     * @var Zend_Config

     */

    protected $_config = null;

    /**

     * @param array $options

     */

    public function __config($options = array())

    {

        if ($options) {

            $this->setOptions($options);

        }

    }

    /**

     * @param array $options

     */

    public function setOptions(Array $options)

    {

        foreach ($options as $optionName => $optionValue) {

            $setMethodName = 'set' . $optionName;

            if (method_exists($this, $setMethodName)) {

                $this->{$setMethodName}($optionValue);

            }

        }

    }

    /**

     * @param  string $configFilepath

     * @return Zend_Tool_Framework_Client_Config

     */

    public function setConfigFilepath($configFilepath)

    {

        if (!file_exists($configFilepath)) {

            require_once 'Zend/Tool/Framework/Client/Exception.php';

            throw new Zend_Tool_Framework_Client_Exception('Provided path to config ' . $configFilepath . ' does not exist');

        }

        $this->_configFilepath = $configFilepath;

        $this->loadConfig($configFilepath);

        return $this;

    }

    /**

     * Load the configuration from the given path.

     * 

     * @param string $configFilepath

     */

    protected function loadConfig($configFilepath)

    {

        $suffix = substr($configFilepath, -4);

        switch ($suffix) {

            case '.ini':

                require_once 'Zend/Config/Ini.php';

                $this->_config = new Zend_Config_Ini($configFilepath, null, array('allowModifications' => true));

                break;

            case '.xml':

                require_once 'Zend/Config/Xml.php';

                $this->_config = new Zend_Config_Xml($configFilepath, null, array('allowModifications' => true));

                break;

            case '.php':

                require_once 'Zend/Config.php';

                $this->_config = new Zend_Config(include $configFilepath, true);

                break;

            default:

                require_once 'Zend/Tool/Framework/Client/Exception.php';

                throw new Zend_Tool_Framework_Client_Exception('Unknown config file type '

                    . $suffix . ' at location ' . $configFilepath

                    );

        }

    }

    /**

     * Return the filepath of the configuration.

     * 

     * @return string

     */

    public function getConfigFilepath()

    {

        return $this->_configFilepath;

    }

    /**

     * Get a configuration value.

     * 

     * @param string $name

     * @param string $defaultValue

     * @return mixed

     */

    public function get($name, $defaultValue=null)

    {

        return $this->getConfigInstance()->get($name, $defaultValue);

    }

    /**

     * Get a configuration value

     *

     * @param string $name

     * @return mixed

     */

    public function __get($name)

    {

        return $this->getConfigInstance()->{$name};

    }

    /**

     * Check if a configuration value isset.

     *

     * @param  string $name

     * @return boolean

     */

    public function __isset($name)

    {

        if($this->exists() == false) {

            return false;

        }

        return isset($this->getConfigInstance()->{$name});

    }

    /**

     * @param string $name

     */

    public function __unset($name)

    {

        unset($this->getConfigInstance()->$name);

    }

    /**

     * @param string $name

     * @param mixed $value

     */

    public function __set($name, $value)

    {

        return $this->getConfigInstance()->$name = $value;

    }

    /**

     * Check if the User profile has a configuration.

     *

     * @return bool

     */

    public function exists()

    {

        return ($this->_config!==null);

    }

    /**

     * @throws Zend_Tool_Framework_Client_Exception

     * @return Zend_Config

     */

    public function getConfigInstance()

    {

        if(!$this->exists()) {

            require_once "Zend/Tool/Framework/Client/Exception.php";

            throw new Zend_Tool_Framework_Client_Exception("Client has no persistent configuration.");

        }

        return $this->_config;

    }

    /**

     * Save changes to the configuration into persistence.

     *

     * @return bool

     */

    public function save()

    {

        if($this->exists()) {

            $writer = $this->getConfigWriter();

            $writer->write($this->getConfigFilepath(), $this->getConfigInstance(), true);

            $this->loadConfig($this->getConfigFilepath());

            return true;

        }

        return false;

    }

    /**

     * Get the config writer that corresponds to the current config file type.

     *

     * @return Zend_Config_Writer_FileAbstract

     */

    protected function getConfigWriter()

    {

        $suffix = substr($this->getConfigFilepath(), -4);

        switch($suffix) {

            case '.ini':

                require_once "Zend/Config/Writer/Ini.php";

                $writer = new Zend_Config_Writer_Ini();

                $writer->setRenderWithoutSections();

                break;

            case '.xml':

                require_once "Zend/Config/Writer/Xml.php";

                $writer = new Zend_Config_Writer_Xml();

                break;

            case '.php':

                require_once "Zend/Config/Writer/Array.php";

                $writer = new Zend_Config_Writer_Array();

                break;

            default:

                require_once 'Zend/Tool/Framework/Client/Exception.php';

                throw new Zend_Tool_Framework_Client_Exception('Unknown config file type '

                    . $suffix . ' at location ' . $this->getConfigFilepath()

                    );

        }

        return $writer;

    }

}