<?php
// Looks like PEAR is being developed without E_NOTICE (1.7.0RC1)
error_reporting(E_ALL & ~E_NOTICE);

// just a shortcut
if (!defined('DS')) {
    define('DS', DIRECTORY_SEPARATOR);
}

// add PEAR lib in include_path if needed
$_includePath = get_include_path();
$_pearDir = dirname(dirname(dirname(__FILE__))) . DS . 'downloader' . DS . 'pearlib';
if (!getenv('PHP_PEAR_INSTALL_DIR')) {
    putenv('PHP_PEAR_INSTALL_DIR=' . $_pearDir);
}
$_pearPhpDir = $_pearDir . DS . 'php';
if (strpos($_includePath, $_pearPhpDir) === false) {
    if (substr($_includePath, 0, 2) === '.' . PATH_SEPARATOR) {
        $_includePath = '.' . PATH_SEPARATOR . $_pearPhpDir . PATH_SEPARATOR . substr($_includePath, 2);
    } else {
        $_includePath = $_pearPhpDir . PATH_SEPARATOR . $_includePath;
    }
    set_include_path($_includePath);
}

// include necessary PEAR libs
require_once $_pearPhpDir."/PEAR.php";
require_once $_pearPhpDir."/PEAR/Frontend.php";
require_once $_pearPhpDir."/PEAR/Registry.php";
require_once $_pearPhpDir."/PEAR/Config.php";
require_once $_pearPhpDir."/PEAR/Command.php";
require_once $_pearPhpDir."/PEAR/Exception.php";

require_once dirname(__FILE__)."/Pear/Frontend.php";
require_once dirname(__FILE__)."/Pear/Package.php";

class Varien_Pear
{
    protected $_config;

    protected $_registry;

    protected $_frontend;

    protected $_cmdCache = array();

    static protected $_instance;

    static public $reloadOnRegistryUpdate = true;

    public function __construct()
    {
        $this->getConfig();
    }

    public function getInstance()
    {
        if (!self::$_instance) {
            self::$_instance = new self;
        }
        return self::$_instance;
    }

    public function isSystemPackage($pkg)
    {
        return in_array($pkg, array('Archive_Tar', 'Console_Getopt', 'PEAR', 'Structures_Graph'));
    }

    public function getBaseDir()
    {
        return dirname(dirname(dirname(__FILE__)));
    }

    public function getPearDir()
    {
        return $this->getBaseDir().DS.'downloader'.DS.'pearlib';
    }

    public function getConfig()
    {
        if (!$this->_config) {
            $pear_dir = $this->getPearDir();

            $config = PEAR_Config::singleton($pear_dir.DS.'pear.ini', '-');

            $config->set('auto_discover', 1);
            $config->set('cache_ttl', 60);
            #$config->set('preferred_state', 'beta');

            $config->set('bin_dir', $pear_dir);
            $config->set('php_dir', $pear_dir.DS.'php');
            $config->set('download_dir', $pear_dir.DS.'download');
            $config->set('temp_dir', $pear_dir.DS.'temp');
            $config->set('data_dir', $pear_dir.DS.'data');
            $config->set('cache_dir', $pear_dir.DS.'cache');
            $config->set('test_dir', $pear_dir.DS.'tests');
            $config->set('doc_dir', $pear_dir.DS.'docs');

            $mageDir = $config->get('mage_dir');

            foreach ($config->getKeys() as $key) {
                if (!(substr($key, 0, 5)==='mage_' && substr($key, -4)==='_dir')) {
                    continue;
                }
                $config->set($key, preg_replace('#^'.preg_quote($mageDir).'#', $this->getBaseDir(), $config->get($key)));
                #echo $key.' : '.$config->get($key).'<br>';
            }

            $reg = $this->getRegistry();
            $config->setRegistry($reg);

            PEAR_DependencyDB::singleton($config, $pear_dir.DS.'php'.DS.'.depdb');

            PEAR_Frontend::setFrontendObject($this->getFrontend());

            PEAR_Command::registerCommands(false, $pear_dir.DS.'php'.DS.'PEAR'.DS.'Command'.DS);

            $this->_config = $config;
        }
        return $this->_config;
    }

    public function getMagentoChannels()
    {
        return array('connect.magentocommerce.com/core', 'connect.magentocommerce.com/community');
    }

    public function getRegistry($redirectOnChange=true)
    {
        if (!$this->_registry) {
            $this->_registry = new Varien_Pear_Registry($this->getPearDir().DS.'php');

            $changed = false;
            foreach ($this->getMagentoChannels() as $channel) {
                if (!$this->getRegistry()->channelExists($channel)) {
                    $this->run('channel-discover', array(), array($channel));
                    $changed = true;
                }
            }

            if ($changed) {
                $this->_registry = new Varien_Pear_Registry($this->getPearDir().DS.'php');
            }
//            if ($changed && self::$reloadOnRegistryUpdate && empty($_GET['pear_registry'])) {
//                echo "TEST:";
//                echo self::$reloadOnRegistryUpdate;
//                //TODO:refresh registry in memory to reflect discovered channels without redirect
//                #header("Location: ".$_SERVER['SCRIPT_NAME'].'?'.$_SERVER['QUERY_STRING'].'&pear_registry=1');
//                exit;
//            }
        }
        return $this->_registry;
    }

    public function getFrontend()
    {
        if (!$this->_frontend) {
            $this->_frontend = new Varien_Pear_Frontend;
        }
        return $this->_frontend;
    }

    public function getLog()
    {
        return $this->getFrontend()->getLog();
    }

    public function getOutput()
    {
        return $this->getFrontend()->getOutput();
    }

    public function run($command, $options=array(), $params=array())
    {
        @set_time_limit(0);
        @ini_set('memory_limit', '256M');

        if (empty($this->_cmdCache[$command])) {
            $cmd = PEAR_Command::factory($command, $this->getConfig());
            if ($cmd instanceof PEAR_Error) {
                return $cmd;
            }
            $this->_cmdCache[$command] = $cmd;
        } else {
            $cmd = $this->_cmdCache[$command];
        }
        #$cmd = PEAR_Command::factory($command, $this->getConfig());
        $result = $cmd->run($command, $options, $params);
        return $result;
    }

    public function setRemoteConfig($uri) #$host, $user, $password, $path='', $port=null)
    {
        #$uri = 'ftp://' . $user . ':' . $password . '@' . $host . (is_numeric($port) ? ':' . $port : '') . '/' . trim($path, '/') . '/';
        $this->run('config-set', array(), array('remote_config', $uri));
        return $this;
    }

    /**
     * Run PEAR command with html output console style
     *
     * @param array|Varien_Object $runParams command, options, params,
     *        comment, success_callback, failure_callback
     */
    public function runHtmlConsole($runParams)
    {
        ob_implicit_flush();

        $fe = $this->getFrontend();
        $oldLogStream = $fe->getLogStream();
        $fe->setLogStream('stdout');

        if ($runParams instanceof Varien_Object) {
            $run = $runParams;
        } elseif (is_array($runParams)) {
            $run = new Varien_Object($runParams);
        } elseif (is_string($runParams)) {
            $run = new Varien_Object(array('title'=>$runParams));
        } else {
            throw Varien_Exception("Invalid run parameters");
        }
?>
<html><head><style type="text/css">
body { margin:0px; padding:3px; background:black; color:white; }
pre { font:normal 11px Courier New, serif; color:#2EC029; }
</style></head><body>
<?php
        echo "<pre>".$run->getComment();

        if ($command = $run->getCommand()) {
            $result = $this->run($command, $run->getOptions(), $run->getParams());

            if ($result instanceof PEAR_Error) {
                echo "\r\n\r\nPEAR ERROR: ".$result->getMessage();
            }
            echo '</pre><script type="text/javascript">';
            if ($result instanceof PEAR_Error) {
                if ($callback = $run->getFailureCallback()) {
                    call_user_func_array($callback, array($result));
                }
            } else {
                if ($callback = $run->getSuccessCallback()) {
                    call_user_func_array($callback, array($result));
                }
            }
            echo '</script>';
        } else {
            $result = false;

            echo '</pre>';
        }
?>
<script type="text/javascript">
if (!auto_scroll) {
    var auto_scroll = window.setInterval("document.body.scrollTop+=2", 10);
}
</script>
</body></html>
<?php
        $fe->setLogStream($oldLogStream);

        return $result;
    }
}
