<?php
/*
    DOKEOS - elearning and course management software

    For a full list of contributors, see documentation/credits.html

    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either version 2
    of the License, or (at your option) any later version.
    See "documentation/licence.html" more details.

    Contact:
		Dokeos
		Rue des Palais 44 Paleizenstraat
		B-1030 Brussels - Belgium
		Tel. +32 (2) 211 34 56
*/

/**
*	@package dokeos.survey
* 	@author unknown, the initial survey that did not make it in 1.8 because of bad code
* 	@author Patrick Cool <patrick.cool@UGent.be>, Ghent University: cleanup, refactoring and rewriting large parts of the code
* 	@version $Id: question.php 12887 2007-08-11 22:17:36Z yannoo $
*/

// name of the language file that needs to be included
$language_file = 'survey';

// including the global dokeos file
require ('../inc/global.inc.php');

// including additional libraries
//require_once (api_get_path(LIBRARY_PATH)."/survey.lib.php");
require_once('survey.lib.php');

/** @todo this has to be moved to a more appropriate place (after the display_header of the code)*/
if (!api_is_allowed_to_edit())
{
	Display :: display_header();
	Display :: display_error_message(get_lang('NotAllowed'), false);
	Display :: display_footer();
	exit;
}

// Database table definitions
/** @todo use database constants for the survey tables */
$table_survey 					= Database :: get_course_table(TABLE_SURVEY);
$table_survey_question 			= Database :: get_course_table(TABLE_SURVEY_QUESTION);
$table_survey_question_option 	= Database :: get_course_table(TABLE_SURVEY_QUESTION_OPTION);
$table_course 					= Database :: get_main_table(TABLE_MAIN_COURSE);
$table_user 					= Database :: get_main_table(TABLE_MAIN_USER);

// getting the survey information
$survey_data = survey_manager::get_survey($_GET['survey_id']);
$urlname = substr(strip_tags($survey_data['title']), 0, 40);
if (strlen(strip_tags($survey_data['title'])) > 40)
{
	$urlname .= '...';
}

// breadcrumbs
$interbreadcrumb[] = array ("url" => 'survey_list.php', 'name' => get_lang('SurveyList'));
$interbreadcrumb[] = array ("url" => 'survey.php?survey_id='.$_GET['survey_id'], 'name' => $urlname);

// Tool name
if ($_GET['action'] == 'add')
{
	$tool_name = get_lang('AddQuestion');
}
if ($_GET['action'] == 'edit')
{
	$tool_name = get_lang('EditQuestion');
}



// the possible question types
$possible_types = array('yesno', 'multiplechoice', 'multipleresponse', 'open', 'dropdown', 'comment', 'pagebreak', 'percentage', 'score');

// checking if it is a valid type
if (!in_array($_GET['type'], $possible_types))
{
	Display::display_header($tool_name);
	Display :: display_error_message(get_lang('TypeDoesNotExist'), false);
	Display :: display_footer();
}

// displaying the form for adding or editing the question
if (!$_POST['save_question'] && in_array($_GET['type'],$possible_types))
{
	// Displaying the header
	Display::display_header($tool_name);
	echo '<img src="../img/'.survey_manager::icon_question($_GET['type']).'" alt="'.get_lang(ucfirst($_GET['type'])).'" title="'.get_lang(ucfirst($_GET['type'])).'" /><br />';
	echo get_lang(ucfirst($_GET['type']));

	$form = new $_GET['type'];

	// The defaults values for the form
	$form_content['horizontalvertical'] = 'vertical';
	$form_content['answers'] = array('', '');
	if ($_GET['type'] == 'yesno')
	{
		$form_content['answers'][0]=get_lang('Yes');
		$form_content['answers'][1]=get_lang('No');
	}
	// We are editing a question
	if (isset($_GET['question_id']) AND !empty($_GET['question_id']))
	{
		$form_content = survey_manager::get_question($_GET['question_id']);
	}

	// an action has been performed (for instance adding a possible answer, moving an answer, ...)
	if ($_POST)
	{
		$form_content = $_POST;
		$form_content = $form->handle_action($form_content);
	}

	$form->create_form($form_content);
	$form->render_form();
}
else
{
	$form_content = $_POST;
	$form = new question();
	$form->handle_action($form_content);
}

// Footer
Display :: display_footer();
?>