<?php

/** 

 * TestLink Open Source Project - http://testlink.sourceforge.net/

 * This script is distributed under the GNU General Public License 2 or later. 

 *

 * @package 	TestLink

 * @author asimon

 * @copyright 	2005-2009, TestLink community 

 * @version    	CVS: $Id: tcCompareVersions.php,v 1.4 2010/04/23 14:02:42 asimon83 Exp $

 * @link 		http://www.teamst.org/index.php

 *

 * Compares selected testcase versions with each other.

 *

 * @internal Revisions:

 */



require_once("../../config.inc.php");

require_once("common.php");

require('../../third_party/diff/diff.php');



$templateCfg = templateConfiguration();

testlinkInitPage($db);

$smarty = new TLSmarty();



$differ = new diff();

$args = init_args();

$gui = new stdClass();



$tcaseMgr = new testcase($db); 

$tcaseSet = $tcaseMgr->get_by_id($args->tcase_id);



$gui->tc_versions = $tcaseSet;

$gui->tc_id = $args->tcase_id;

$gui->compare_selected_versions = $args->compare_selected_versions;

$gui->context = $args->context;

$gui->version_short = lang_get('version_short');



$labels = array();

$labels["num_changes"] = lang_get("num_changes");

$labels["no_changes"] = lang_get("no_changes");



//if already two versions are selected, display diff

//else display template with versions to select

if ($args->compare_selected_versions) {

	$diff_array = array("summary" => array(),

						"preconditions" => array());



	foreach($tcaseSet as $tcase) {		

		if ($tcase['version'] == $args->version_left) {

			$left = $tcase;

		}

		if ($tcase['version'] == $args->version_right) {

			$right = $tcase;

		}

	}



			foreach($diff_array as $key => $val) {

		//attach a line break so we can use that as separation character for explode

		$diff_array[$key]["left"] = explode("\n", str_replace("</p>", "</p>\n", $left[$key]));

		$diff_array[$key]["right"] = explode("\n", str_replace("</p>", "</p>\n", $right[$key]));

	}

	

	//now for the new tcsteps feature

	$diff_array["steps"] = array();

	$diff_array["expected_results"] = array();

		

	if (is_array($left['steps'])) {

		$steps = "";

		$results = "";

		foreach ($left['steps'] as $step) {

			$steps .= str_replace("</p>", "</p>\n", $step['actions']);

			$results .=str_replace("</p>", "</p>\n", $step['expected_results']);

			}

		$diff_array["steps"]["left"] = explode("\n", $steps);

		$diff_array["expected_results"]["left"] = explode("\n", $results);

		}



	if (is_array($right['steps'])) {

		$steps = "";

		$results = "";

		foreach ($right['steps'] as $step) {

			$steps .= str_replace("</p>", "</p>\n", $step['actions']);

			$results .=str_replace("</p>", "</p>\n", $step['expected_results']);

		}

		$diff_array["steps"]["right"] = explode("\n", $steps);

		$diff_array["expected_results"]["right"] = explode("\n", $results);

	}

	

	foreach($diff_array as $key => $val) {

		$localized_key = lang_get($key);

		$diff_array[$key]["diff"] = $differ->inline($val["left"], $gui->version_short . 

								$args->version_left, $val["right"], $gui->version_short . 

								$args->version_right, $args->context);

		$diff_array[$key]["count"] = count($differ->changes);

		$diff_array[$key]["heading"] = $localized_key;

		

		//are there any changes? then display! if not, nothing to show here

		if ($diff_array[$key]["count"] > 0) {

			$diff_array[$key]["message"] = sprintf($labels["num_changes"], $localized_key, 

											$diff_array[$key]["count"]);

		} else {

			$diff_array[$key]["message"] = sprintf($labels["no_changes"], $localized_key);

		}

	}	



	$gui->diff_array = $diff_array;

	$gui->subtitle = sprintf(lang_get('diff_subtitle_tc'), $args->version_left, 

										$args->version_left, $args->version_right, 

										$args->version_right, $tcaseSet[0]['name']);

} 



$smarty = new TLSmarty();

$smarty->assign('gui', $gui);

$smarty->display($templateCfg->template_dir . $templateCfg->default_template);





function init_args()

{

	$args = new stdClass();

	

	$args->tcase_id = isset($_REQUEST['testcase_id']) ? $_REQUEST['testcase_id'] : 0;

	$args->compare_selected_versions = isset($_REQUEST['compare_selected_versions']) ? 

											$_REQUEST['compare_selected_versions'] : 0;

	$args->version_left = $_REQUEST['version_left'];

	$args->version_right = $_REQUEST['version_right'];

	

	$diffEngineCfg = config_get("diffEngine");

	if (isset($_REQUEST['context_show_all'])) {

		$args->context = null;

	} else {

		$args->context = (isset($_REQUEST['context']) && is_numeric($_REQUEST['context'])) ? 

											$_REQUEST['context'] : $diffEngineCfg->context;	

	}

	

	return $args;

}



?>