<?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

 */

/**

 * @see Zend_Tool_Framework_Provider_Abstract

 */

require_once "Zend/Tool/Framework/Provider/Abstract.php";

/**

 * @see Zend_Config

 */

require_once "Zend/Config.php";

/**

 * @see Zend_Config_Writer_Ini

 */

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

/**

 * @see Zend_Loader

 */

require_once "Zend/Loader.php";

/**

 * Configuration Provider

 *

 * @category   Zend

 * @package    Zend_Tool

 * @package    Framework

 * @uses       Zend_Tool_Framework_Provider_Abstract

 * @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 23206 2010-10-21 15:49:31Z ralph $

 */

class Zend_Tool_Framework_System_Provider_Config extends Zend_Tool_Framework_Provider_Abstract

{

    /**

     * @var array

     */

    protected $_levelCompleted = array();

    /**

     * array of specialties handled by this provider

     * 

     * @var array

     */

    protected $_specialties = array('Manifest', 'Provider');

    /**

     * @param string $type

     */

    public function create()

    {

        /* @var $userConfig Zend_Tool_Framework_Client_Config */

        $userConfig = $this->_registry->getConfig();

        $resp = $this->_registry->getResponse();

        if ($userConfig->exists()) {

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

            throw new Zend_Tool_Framework_Exception(

                "A configuration already exists, cannot create a new one.");

        }

        $homeDirectory = $this->_detectHomeDirectory();

        $writer = new Zend_Config_Writer_Ini();

        $writer->setRenderWithoutSections();

        $filename = $homeDirectory."/.zf.ini";

        $config = array(

            'php' => array(

                'include_path' => get_include_path(),

            ),

        );

        $writer->write($filename, new Zend_Config($config));

        $resp = $this->_registry->getResponse();

        $resp->appendContent("Successfully written Zend Tool config.");

        $resp->appendContent("It is located at: ".$filename);

    }

    /**

     * @return string

     */

    protected function _detectHomeDirectory()

    {

        $envVars = array("ZF_HOME", "HOME", "HOMEPATH");

        foreach($envVars AS $env) {

            $homeDirectory = getenv($env);

            if ($homeDirectory != false && file_exists($homeDirectory)) {

                return $homeDirectory;

            }

        }

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

        throw new Zend_Tool_Framework_Exception("Cannot detect user home directory, set ZF_HOME enviroment variable.");

    }

    /**

     * Show Zend Tool User Configuration

     *

     * @return void

     */

    public function show()

    {

        $userConfig = $this->_loadUserConfigIfExists();

        $configArray = $userConfig->getConfigInstance()->toArray();

        $resp = $this->_registry->getResponse();

        $i = 0;

        $tree = "";

        foreach($configArray AS $k => $v) {

            $i++;

            $tree .= $this->_printTree($k, $v, 1, count($configArray)==$i);

        }

        $resp->appendContent("User Configuration: ".$userConfig->getConfigFilepath(), array("color" => "green"));

        $resp->appendContent($tree, array("indention" => 2));

    }

    /**

     *

     * @param string $key

     * @param string $value

     * @param int $level

     * @return string

     */

    protected function _printTree($key, $value, $level=1, $isLast=false)

    {

        $this->_levelCompleted[$level] = false;

        $prefix = "";

        for ($i = 1; $i < $level; $i++) {

            if ($this->_levelCompleted[$i] == true) {

                $prefix .= "    ";

            } else {

                $prefix .= "|   ";

            }

        }

        if ($isLast) {

            $pointer = "`-- ";

        } else {

            $pointer = "|-- ";

        }

        $tree = "";

        if (is_array($value)) {

            $tree .= $prefix.$pointer.$key.PHP_EOL;

            if ($isLast == true) {

                $this->_levelCompleted[$level] = true;

            }

            $i = 0;

            foreach ($value as $k => $v) {

                $i++;

                $tree .= $this->_printTree($k, $v, $level+1, (count($value)==$i));

            }

        } else {

            $tree .= $prefix.$pointer.$key.": ".trim($value).PHP_EOL;

        }

        return $tree;

    }

    public function enable()

    {

        $resp = $this->_registry->getResponse();

        $resp->appendContent('Use either "zf enable config.provider" or "zf enable config.manifest".');

    }

    public function disable()

    {

        $resp = $this->_registry->getResponse();

        $resp->appendContent('Use either "zf disable config.provider" or "zf disable config.manifest".');

    }

    /**

     * @param string $className

     */

    public function enableProvider($className)

    {

        Zend_Loader::loadClass($className);

        $reflClass = new ReflectionClass($className);

        if (!in_array("Zend_Tool_Framework_Provider_Interface", $reflClass->getInterfaceNames())) {

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

            throw new Zend_Tool_Framework_Exception("Given class is not a provider");

        }

        $this->_doEnable($className);

    }

    protected function _doEnable($className)

    {

        $userConfig = $this->_loadUserConfigIfExists();

        if (!isset($userConfig->basicloader)) {

            $userConfig->basicloader = array();

        }

        if (!isset($userConfig->basicloader->classes)) {

            $userConfig->basicloader->classes = array();

        }

        $providerClasses = $userConfig->basicloader->classes->toArray();

        if (!in_array($className, $providerClasses)) {

            if (count($providerClasses)) {

                $pos = max(array_keys($providerClasses))+1;

            } else {

                $pos = 0;

            }

            $userConfig->basicloader->classes->$pos = $className;

            if ($userConfig->save()) {

                $this->_registry->getResponse()->appendContent(

                    "Provider/Manifest '".$className."' was enabled for usage with Zend Tool.",

                    array("color" => "green", "aligncenter" => true)

                );

            } else {

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

                throw new Zend_Tool_Framework_Exception(

                    "Could not write user configuration to persistence."

                );

            }

        } else {

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

            throw new Zend_Tool_Framework_Exception(

                "Provider/Manifest '".$className."' is already enabled."

            );

        }

    }

    /**

     * @param string $className

     */

    public function enableManifest($className)

    {

        Zend_Loader::loadClass($className);

        $reflClass = new ReflectionClass($className);

        if (!in_array("Zend_Tool_Framework_Manifest_Interface", $reflClass->getInterfaceNames())) {

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

            throw new Zend_Tool_Framework_Exception("Given class is not a manifest.");

        }

        $this->_doEnable($className);

    }

    /**

     * @param string $className

     */

    public function disableManifest($className)

    {

        $this->disableProvider($className);

    }

    /**

     * @param string $className

     */

    public function disableProvider($className)

    {

        $userConfig = $this->_loadUserConfigIfExists();

        if (!isset($userConfig->basicloader)) {

            $userConfig->basicloader = array();

        }

        if (!isset($userConfig->basicloader->classes)) {

            $userConfig->basicloader->classes = array();

        }

        $providerClasses = $userConfig->basicloader->classes->toArray();

        if (($key = array_search($className, $providerClasses)) !== false) {

            unset($userConfig->basicloader->classes->$key);

            if ($userConfig->save()) {

                $this->_registry->getResponse()->appendContent(

                    "Provider/Manifest '".$className."' was disabled.",

                    array("color" => "green", "aligncenter" => true)

                );

            } else {

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

                throw new Zend_Tool_Framework_Exception(

                    "Could not write user configuration to persistence."

                );

            }

        } else {

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

            throw new Zend_Tool_Framework_Exception(

                "Provider/Manifest '".$className."' is not enabled."

            );

        }

    }

    /**

     * @return Zend_Tool_Framework_Client_Config

     */

    protected function _loadUserConfigIfExists()

    {

        /* @var $userConfig Zend_Tool_Framework_Client_Config */

        $userConfig = $this->_registry->getConfig();

        $resp = $this->_registry->getResponse();

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

            $resp->appendContent("User has no config file.", array("aligncenter" => true, "color" => array('hiWhite', 'bgRed')));

        }

        return $userConfig;

    }

}