<?php

/**
 * Controller Class
 * Implementing MVC Pattern
 *
 * @author Erik Amaru Ortiz <erik@colosa.com, aortiz.erik@gmail.com>
 * @package gulliver.system
 * @access private
 */
class Controller
{
    /**
     *
     * @var boolean debug switch for general purpose
     */
    public $debug = null;

    /**
     *
     * @var array - private array to store proxy data
     */
    private $__data__ = array();

    /**
     *
     * @var object - private object to store the http request data
     */
    private $__request__;

    /**
     *
     * @var object - headPublisher object to handle the output
     */
    private $headPublisher = null;

    /**
     *
     * @var string - response type var. possibles values: json|plain
     */
    private $responseType = '';

    /**
     *
     * @var string - layout to pass skinEngine
     */
    private $layout = '';

    /**
     *
     * @var string contains the pluin name, in case the controller is on a plugin
     */
    private $pluginName = '';

    /**
     *
     * @var string contains the plugin path
     */
    private $pluginHomeDir = '';

    /**
     * Magic setter method
     *
     * @param string $name
     * @param string $value
     */
    public function __set($name, $value)
    {
        $this->__data__[$name] = $value;
    }

    /**
     * Magic getter method
     *
     * @param string $name
     * @return string or NULL if the internal var doesn't exist
     */
    public function __get($name)
    {
        $message = 'Undefined property via __get(): ' . $name . ' in ';
        if (array_key_exists($name, $this->__data__)) {
            return $this->__data__[$name];
        }

        $trace = debug_backtrace();
        trigger_error($message . $trace[0]['file'] . ' on line ' . $trace[0]['line'], E_USER_NOTICE);
        return null;
    }

    /**
     * Magic isset method
     *
     * @param string $name
     */
    public function __isset($name)
    {
        return isset($this->__data__[$name]);
    }

    /**
     * Magic unset method
     *
     * @param string $name
     */
    public function __unset($name)
    {
        unset($this->__data__[$name]);
    }

    /**
     * Set Response type method
     *
     * @param string $type contains : json|plain
     */
    public function setResponseType($type)
    {
        $this->responseType = $type;
    }

    /**
     * call to execute a internal proxy method and handle its exceptions
     *
     * @param string $name
     */
    public function call($name)
    {
        try {
            $result = $this->$name($this->__request__);
            if ($this->responseType == 'json') {
                print G::json_encode($result);
            }
        } catch (Exception $e) {
            $result = new StdClass();
            if ($this->responseType != 'json') {
                Bootstrap::renderTemplate('controller.exception.tpl', array(
                    'title' => 'Controller Exception',
                    'message' => nl2br($e->getMessage()),
                    'controller' => (function_exists('get_called_class') ? get_called_class() : 'Controller'),
                    'exceptionClass' => get_class($e),
                    'file' => $e->getFile(),
                    'line' => $e->getLine(),
                    'trace' => $e->getTrace()
                ));
            } else {
                $result->success = false;
                $result->msg = $e->getMessage();
                switch (get_class($e)) {
                    case 'Exception':
                        $error = "SYSTEM ERROR";
                        break;
                    case 'PMException':
                        $error = "PROCESSMAKER ERROR";
                        break;
                    case 'PropelException':
                        $error = "DATABASE ERROR";
                        break;
                    case 'UserException':
                        $error = "USER ERROR";
                        break;
                }
                $result->error = $error;

                $result->exception->class = get_class($e);
                $result->exception->code = $e->getCode();
                print G::json_encode($result);
            }
        }
    }

    /**
     * Set the http request data
     *
     * @param array $data
     */
    public function setHttpRequestData($data)
    {
        if (! is_object($this->__request__)) {
            $this->__request__ = new stdclass();
        }
        if (is_array($data)) {
            foreach ($data as $key => $value) {
                $this->__request__->{$key} = $value;
            }
        } else {
            $this->__request__ = $data;
        }
    }

    /**
     * Get debug var.
     * method
     *
     * @param boolan $val boolean value for debug var.
     */
    public function setDebug($val)
    {
        $this->debug = $val;
    }

    /**
     * Get debug var.
     * method
     */
    public function getDebug()
    {
        if ($this->debug === null) {
            $this->debug = defined('DEBUG') && DEBUG ? true : false;
        }

        return $this->debug;
    }

    /**
     * * HeadPublisher Functions Binding **
     */

    /**
     * Include a particular extjs library or extension to the main output
     *
     * @param string $srcFile path of a extjs library or extension
     * @param boolean $debug debug flag to indicate if the js output will be minifield or not
     * $debug: true -> the js content will be not minified (readable)
     * false -> the js content will be minified
     */
    public function includeExtJSLib($srcFile, $debug = false)
    {
        $this->getHeadPublisher()->usingExtJs($srcFile, ($debug ? $debug : $this->getDebug()));
    }

    /**
     * Include a javascript file that is using extjs framework to the main output
     *
     * @param string $srcFile path of javascrit file to include
     * @param boolean $debug debug flag to indicate if the js output will be minifield or not
     * $debug: true -> the js content will be not minified (readable)
     * false -> the js content will be minified
     */
    public function includeExtJS($srcFile, $debug = false)
    {
        $this->getHeadPublisher()->addExtJsScript($srcFile, ($debug ? $debug : $this->getDebug()));
    }

    /**
     * Include a Html file to the main output
     *
     * @param string $file path of html file to include to the main output
     */
    public function setView($file)
    {
        $this->getHeadPublisher()->addContent($file);
    }

    /**
     * Set variables to be accesible by javascripts
     *
     * @param string $name contains var. name
     * @param string $value conatins var. value
     */
    public function setJSVar($name, $value)
    {
        $this->getHeadPublisher()->assign($name, $value);
    }

    /**
     * Set variables to be accesible by the extjs layout template
     *
     * @param string $name contains var. name
     * @param string $value conatins var. value
     */
    public function setVar($name, $value)
    {
        $this->getHeadPublisher()->assignVar($name, $value);
    }

    /**
     * method to get the local getHeadPublisher object
     */
    public function getHeadPublisher()
    {
        if (! is_object($this->headPublisher)) {
            $this->headPublisher = headPublisher::getSingleton();
        }

        return $this->headPublisher;
    }

    public function setLayout($layout)
    {
        $this->layout = $layout;
    }

    public function render($type = 'mvc')
    {
        G::RenderPage('publish', $type, null, $this->layout);
    }

    public function header($header)
    {
        G::header($header);
    }

    public function redirect($url)
    {
        G::header("Location: $url");
    }

    public function setPluginName($name)
    {
        $this->pluginName = $name;
    }

    public function getPluginName()
    {
        return $this->pluginName;
    }

    public function setPluginHomeDir($dir)
    {
        $this->pluginHomeDir = $dir;
    }

    public function getPluginHomeDir()
    {
        return $this->pluginHomeDir;
    }
}