<?php

/*
* fooStack, CIUnit for CodeIgniter
* Copyright (c) 2008-2009 Clemens Gruenberger
* Released under the MIT license, see:
* http://www.opensource.org/licenses/mit-license.php
*/

//load Testing
require_once CIUPATH . 'libraries/CIUnitTestCase.php';

/**
* CIUnit Class
* guides CI to behave nicely during tests..
*
* during the tests you can use:
*
* in setUp function:
* $this->CI = set_controller('controller_to_test');
* to set a different CI controller active
*
* use your controller functions simply like:
* $this->CI->function();
*
* created browser output is accessible like so
* $output = output();
* this function yields only once and is then reset to an empty string
*
* template vars like so:
* $vars = viewvars();
* they are also reset after this call
*/
class CIUnit {

	private static $instance;

	public static $controller;
	public static $current;
	public static $controllers = array();

	public static $spyc;
	public static $fixture;

	/**
	 * If this class is suppose to be a Singleton shouldn't the constructor be private?
	 * Correct me if I am wrong but this doesn't prevent multiple instances of this class.
	 */
	public function __construct()
	{
		self::$instance =& $this;
	}

	public function &get_CIU()
	{
		return self::$instance;
	}

	public static function &set_controller($controller = 'CI_Controller', $path = FALSE)
	{
		$controller_name = array_pop(explode('/', $controller));
		//echo "\nc name ".$controller_name;
		//is it the current controller?
		if ($controller_name == self::$current)
		{
			//we have nothing to do, return current controller
			//echo "current found!"; die();
			output();
			viewvars();
			return self::$controller;
		}

		// the current controller must be archieved before littered
		$loader = load_class('Loader', 'core');

		// reset all loaded data
		$loader->reset();

		//echo 'Var Dump of self::$controllers -- ';
		//var_dump(self::$controllers);

		/*
		=========================================================
		I don't understand this section of code.
		self::$controllers[self::$current] is never set when testing
		models. Maybe it will be set when testing controllers?
		=========================================================
		if (isset(self::$controllers[self::$current]))
		{
			self::$controllers[self::$current]['models'] = $loader->_ci_models;
			//this might be an update if it was there before
			// FIXME, all additional properties of the loader / controllers
			// that have to be reset must go in some test config file..
			//'components' => $loader->_ci_components,
			//'classes' => $loader->_ci_classes
		}

		===================================================
		I don't understand why this code is clearing out
		all the loaded components such as autoloaded models
		-- this is very frustrating
		==================================================
		//clean up the current controllers mess
		//reset models
		$loader->_ci_models = array();
		//reset components
		//$loader->_ci_components = array();
		//reset saved queries
		self::$controller->db->queries = array();
		*/

		//clean output / viewvars as well;
		if (isset(self::$controller->output))
		{
			output();
			viewvars();
		}

		//the requested controller was loaded before?
		if (isset(self::$controllers[$controller_name]))
		{
			//echo "saved found! $controller_name";
			//load it
			$old =& self::$controllers[$controller_name];
			self::$controller =& $old['address'];
			self::$current = $controller_name;
			//$loader->_ci_models = $old['models'];
			//$loader->_ci_components = $old['components'];
			//$loader->_ci_classes = &$old['classes'];
		}
		else
		{
			//echo "load new $controller_name";
			//it was not loaded before
			if ( ! class_exists($controller_name))
			{
				if ($path && file_exists($path . $controller . EXT))
				{
					 include_once($path . $controller . EXT);
				}
				else
				{
					include_once(APPPATH . 'controllers/' . $controller . EXT);
				}
			}

			self::$current = $controller_name;
			self::$controllers[$controller_name] = array(
														'address' => new $controller_name(),
														'models' => array()
													);
			self::$controller =& self::$controllers[$controller_name]['address'];
		}

//		var_dump(self::$controllers); die();


//		var_dump(self::$controller); die();

		//CI_Base::$instance = &self::$controller; //so get_instance() provides the correct controller
		return self::$controller;
	}


	public static function &get_controller()
	{
		return self::$controller;
	}

	/**
	* get filenames eg for running test suites
	* $path is relative
	*/
	public static function files($pattern, $path = ".", $addpath = FALSE)
	{
		// Swap directory separators to Unix style for consistency
		$path = str_replace("\\", "/", $path);

		if (substr($path, -1) !== "/")
		{
			$path .= "/";
		}

		$dir_handle = @opendir($path) or die("Unable to open $path");
		$outarr = array();

		while ( false != ($file = readdir($dir_handle)) )
		{
			if (preg_match($pattern, $file))
			{
				if ($addpath)
				{
					$file = $path . $file;
				}
				$outarr[] = $file;
			}
		}
		//could also use preg_grep!
		closedir($dir_handle);
		return $outarr;
	}
}

//=== convenience functions ===
// instead of referring to CIUnit directly

/**
* retrieves current CIUnit Class Singleton
*/
function &get_CIU()
{
	return CIUnit::get_CIU();
}

/**
* sets CI controller
*/
function &set_controller($controller = 'CI_Controller', $path = FALSE)
{
	return CIUnit::set_controller($controller, $path);
}

/**
* retrieves current CI controller from CIUnit
*/
function &get_controller()
{
	return CIUnit::get_controller();
}

/**
* retrieves the cached output from the output class
* and resets it
*/
function output()
{
	return CIUnit::$controller->output->pop_output();
}

/**
* retrieves the cached template vars from the loader class (stored here for assignment to views)
* and resets them
*/
function viewvars()
{
	if( isset(CIUnit::$controller->load->_ci_cached_vars) )
	{
		$out = CIUnit::$controller->load->_ci_cached_vars;
		CIUnit::$controller->load->_ci_cached_vars = array();
		return $out;
	}
	return array();
}

/* End of file CIUnit.php */
/* Location: ./application/third_party/CIUnit/libraries/CIUnit.php */