<?php
/* For licensing terms, see /license.txt */

/**
 *	@package chamilo.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
 *	@author Julio Montoya Armas <gugli100@gmail.com>, Chamilo: Personality Test modification and rewriting large parts of the code as well
 * 	@version $Id: survey_list.php 10680 2007-01-11 21:26:23Z pcool $
 *
 * 	@todo use quickforms for the forms
 * 	@todo check if the user already filled the survey and if this is the case then the answers have to be updated and not stored again.
 * 		  alterantively we could not allow people from filling the survey twice.
 * 	@todo performance could be improved if not the survey_id was stored with the invitation but the survey_code
 */

// Language file that needs to be included
$language_file = 'survey';
// Unsetting the course id (because it is in the URL)
if (!isset($_GET['cidReq'])) {
	$cidReset = true;
} else {
	$_cid = $_GET['cidReq'];
}

// Including the global initialization file
require '../inc/global.inc.php';

// Including additional libraries
//require_once api_get_path(LIBRARY_PATH).'survey.lib.php';
require_once 'survey.lib.php';
require_once api_get_path(LIBRARY_PATH).'course.lib.php';

// Breadcrumbs
if (!empty($_user)) {
	$interbreadcrumb[] = array('url' => 'survey_list.php?cidReq='.$_GET['course'], 'name' => get_lang('SurveyList'));
}

// Header
Display :: display_header(get_lang('ToolSurvey'));

// getting all the course information
$_course = CourseManager::get_course_information($_GET['course']);

// Database table definitions
$table_survey 					= Database :: get_course_table(TABLE_SURVEY, $_course['db_name']);
$table_survey_answer			= Database :: get_course_table(TABLE_SURVEY_ANSWER, $_course['db_name']);
$table_survey_question 			= Database :: get_course_table(TABLE_SURVEY_QUESTION, $_course['db_name']);
$table_survey_question_option 	= Database :: get_course_table(TABLE_SURVEY_QUESTION_OPTION, $_course['db_name']);
$table_course 					= Database :: get_main_table(TABLE_MAIN_COURSE);
$table_user 					= Database :: get_main_table(TABLE_MAIN_USER);
$table_survey_invitation 		= Database :: get_course_table(TABLE_SURVEY_INVITATION, $_course['db_name']);

// First we check if the needed parameters are present
if ((!isset($_GET['course']) || !isset($_GET['invitationcode']))&& !isset($_GET['user_id'])) {
	Display :: display_error_message(get_lang('SurveyParametersMissingUseCopyPaste'), false);
	Display :: display_footer();
	exit;
}
$invitationcode = $_GET['invitationcode'];

// Start auto-invitation feature FS#3403 (all-users-can-do-the-survey-URL handling)
if ($invitationcode == 'auto' && isset($_GET['scode'])){
    // Not intended for anonymous users
    if (!(isset($_user['user_id']) && $_user['user_id']) || api_is_anonymous($_user['user_id'],true)) {
		api_not_allowed();
    }
    $userid = $_user['user_id'];
    $scode = Database::escape_string($_GET['scode']); // Survey_code of the survey
    $autoInvitationcode = "auto-$userid-$scode"; // New invitation code from userid
    // The survey code must exist in this course, or the URL is invalid
    $sql = "SELECT * FROM $table_survey WHERE code='" . $scode . "'";
    $result = Database::query($sql);
    if (Database :: num_rows($result) > 0) { // Ok
        // Check availability
        $row = Database :: fetch_array($result, 'ASSOC');
        $tempdata  = survey_manager :: get_survey($row['survey_id']);
        check_time_availability($tempdata); //exit if survey not available anymore
        // Check for double invitation records (insert should be done once)
        $sql = "SELECT user from $table_survey_invitation where invitation_code = '".Database::escape_string($autoInvitationcode)."'";
        $result = Database::query($sql);
        if (Database :: num_rows($result) == 0) { // Ok
            $sql = "insert into $table_survey_invitation (survey_code,user, invitation_code, invitation_date) ";
            $sql .= " values (\"$scode\", \"$userid\", \"$autoInvitationcode\", now())";
            Database::query($sql);
        }
        // From here we use the new invitationcode auto-userid-surveycode string
        $_GET['invitationcode'] = $autoInvitationcode;
        $invitationcode = $autoInvitationcode;
    }
}

// Now we check if the invitationcode is valid
$sql = "SELECT * FROM $table_survey_invitation WHERE invitation_code = '" . Database :: escape_string($invitationcode) . "'";
$result = Database::query($sql, __FILE__, false); // false = suppress errors
if (Database::num_rows($result) < 1) {
	Display :: display_error_message(get_lang('WrongInvitationCode'), false);
	Display :: display_footer();
	exit;
}
$survey_invitation = Database::fetch_array($result, 'ASSOC');

// Now we check if the user already filled the survey
if ($survey_invitation['answered'] == 1 && !isset($_GET['user_id'])) {
	Display :: display_error_message(get_lang('YouAlreadyFilledThisSurvey'), false);
	Display :: display_footer();
	exit();
}

// Checking if there is another survey with this code.
// If this is the case there will be a language choice
$sql = "SELECT * FROM $table_survey WHERE code='".Database::escape_string($survey_invitation['survey_code'])."'";
$result = Database::query($sql);

if (Database::num_rows($result) > 1) {
	if ($_POST['language']) {
		$survey_invitation['survey_id'] = $_POST['language'];
	} else {
		echo '<form id="language" name="language" method="POST" action="'.api_get_self().'?course='.$_GET['course'].'&invitationcode='.$_GET['invitationcode'].'&cidReq='.$_GET['cidReq'].'">';
		echo '  <select name="language">';
		while ($row=Database::fetch_array($result, 'ASSOC')) {
			echo '<option value="'.$row['survey_id'].'">'.$row['lang'].'</option>';
		}
		echo '</select>';
		//echo '  <input type="submit" name="Submit" value="' . get_lang('Ok') . '" class="next" />';
		echo '<button type="submit" name="Submit" class="next">'.get_lang('Ok').'</button>';
		echo '</form>';
		display::display_footer();
		exit();
	}
} else {
	$row=Database::fetch_array($result, 'ASSOC');
	$survey_invitation['survey_id'] = $row['survey_id'];
}

// Getting the survey information
$survey_data = survey_manager::get_survey($survey_invitation['survey_id']);
//echo '<pre>';print_r($survey_data);echo '</pre>';
//echo $survey_data['form_fields'];echo '-<br>-';echo $survey_data['show_form_profile'];
$survey_data['survey_id'] = $survey_invitation['survey_id'];
//print_r($survey_data);
// Storing the answers
if (count($_POST) > 0) {
    if ($survey_data['survey_type'] === '0') {
		// Getting all the types of the question (because of the special treatment of the score question type
		$sql = "SELECT * FROM $table_survey_question WHERE survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'";
		$result = Database::query($sql);

		while ($row = Database::fetch_array($result, 'ASSOC')) {
			$types[$row['question_id']] = $row['type'];
		}

		// Looping through all the post values
		foreach ($_POST as $key => & $value) {
			// If the post value key contains the string 'question' then it is an answer on a question
			if (strpos($key, 'question') !== false) {
				// Finding the question id by removing 'question'
				$survey_question_id = str_replace('question', '', $key);

				// If the post value is an array then we have a multiple response question or a scoring question type
				// remark: when it is a multiple response then the value of the array is the option_id
				// 		   when it is a scoring question then the key of the array is the option_id and the value is the value
				if (is_array($value)) {
					SurveyUtil::remove_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id);
					foreach ($value as $answer_key => & $answer_value) {
						if ($types[$survey_question_id] == 'score') {
							$option_id = $answer_key;
							$option_value = $answer_value;
						} else {
							$option_id = $answer_value;
							$option_value = '';
						}
						SurveyUtil::store_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id, $option_id, $option_value, $survey_data);
					}
				}
				// All the other question types (open question, multiple choice, percentage, ...)
				else {
					if ($types[$survey_question_id] == 'percentage') {
						$sql = "SELECT * FROM $table_survey_question_option WHERE question_option_id='".Database::escape_string($value)."'";
						$result = Database::query($sql);
						$row = Database::fetch_array($result, 'ASSOC');
						$option_value = $row['option_text'];
					} else {
						$option_value = 0;
						if ($types[$survey_question_id] == 'open') {
							$option_value = $value;
							//$value = 0;
						}
					}

					$survey_question_answer = $value;
					SurveyUtil::remove_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id);
					SurveyUtil::store_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id, $value, $option_value, $survey_data);
					//SurveyUtil::store_answer($user,$survey_id,$question_id, $option_id, $option_value, $survey_data);
				}
			}
		}
	} elseif ($survey_data['survey_type'] === '1') { //conditional/personality-test type surveys
		// Getting all the types of the question (because of the special treatment of the score question type
		$shuffle='';
		if ($survey_data['shuffle'] == '1') {
			$shuffle= ' ORDER BY RAND() ';
		}
		$sql = "SELECT * FROM $table_survey_question
				WHERE survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'
				AND survey_group_pri='0' $shuffle
				";
		$result = Database::query($sql);
        // There is only one question type for conditional surveys
		while ($row = Database::fetch_array($result, 'ASSOC')) {
			$types[$row['question_id']] = $row['type'];
		}

		// Looping through all the post values
		foreach ($_POST as $key => & $value) {
			// If the post value key contains the string 'question' then it is an answer to a question
			if (strpos($key, 'question') !== false) {
				// Finding the question id by removing 'question'
				$survey_question_id = str_replace('question', '', $key);
				// We select the correct answer and the puntuacion
				$sql = "SELECT value FROM $table_survey_question_option " .
                        " WHERE question_option_id='".Database::escape_string($value)."'";
				$result = Database::query($sql);
				$row = Database::fetch_array($result, 'ASSOC');
				$option_value = $row['value'];
				//$option_value = 0;
				$survey_question_answer = $value;
                // We save the answer after making sure that a possible previous attempt is deleted
				SurveyUtil::remove_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id);
				SurveyUtil::store_answer($survey_invitation['user'], $survey_invitation['survey_id'], $survey_question_id, $value, $option_value, $survey_data);
				//SurveyUtil::store_answer($user,$survey_id,$question_id, $option_id, $option_value, $survey_data);
			}
		}
	} else { // In case it's another type than 0 or 1
    	die(get_lang('ErrorSurveyTypeUnknown'));
    }
}

// Displaying the survey title and subtitle (appears on every page)
echo '<div id="survey_title">'.$survey_data['survey_title'].'</div>';
echo '<div id="survey_subtitle">'.$survey_data['survey_subtitle'].'</div>';

// Checking time availability
check_time_availability($survey_data);

// Displaying the survey introduction
if (!isset($_GET['show'])) {
	// The first thing we do is delete the session
	unset($_SESSION['paged_questions']);
	unset($_SESSION['page_questions_sec']);
	$paged_questions_sec=array();

	echo '<div id="survey_content" class="survey_content">'.$survey_data['survey_introduction'].'</div>';
	$limit = 0;
}

$user_id = api_get_user_id();

if ($user_id == 0) {
	$user_id = $survey_invitation['user'];
}
$user_data = UserManager :: get_user_info_by_id($user_id);

if ($survey_data['form_fields']!='' && $survey_data['anonymous'] == 0 && is_array($user_data)) {
	//echo '<pre>'; print_r($survey_invitation);
	$form_fields = explode('@', $survey_data['form_fields']);
	$list = array();
	foreach ($form_fields as $field) {
		$field_value = explode(':', $field);
		if ($field_value[1] == 1) {
			if ($field_value[0] != '') {
				$val = api_substr($field_value[0], 8, api_strlen($field_value[0]));
				$list[$val] = 1;
			}
		}
	}

	// We use the same form as in auth/profile.php
	require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
	$form = new FormValidator('profile', 'post', api_get_self() . "?" . str_replace('&show_form=1', '&show_form=1', $_SERVER['QUERY_STRING']), null,
		array('style' => 'width: 75%; float: ' . ($text_dir == 'rtl' ? 'right;' : 'left;'))
	);

	if (api_is_western_name_order()) {
		if ($list['firstname'] == 1 ) {
			//FIRST NAME
			$form->addElement('text', 'firstname', get_lang('FirstName'), array('size' => 40));
			if (api_get_setting('profile', 'name') !== 'true') {
				$form->freeze(array('firstname'));
			}
			$form->applyFilter(array('firstname'), 'stripslashes');
			$form->applyFilter(array('firstname'), 'trim');
			$form->addRule('firstname', get_lang('ThisFieldIsRequired'), 'required');
		}
		if ($list['lastname'] == 1) {
			//	LAST NAME
			$form->addElement('text', 'lastname', get_lang('LastName'), array('size' => 40));
			if (api_get_setting('profile', 'name') !== 'true') {
				$form->freeze(array('lastname'));
			}
			$form->applyFilter(array('lastname'), 'stripslashes');
			$form->applyFilter(array('lastname'), 'trim');
			$form->addRule('lastname', get_lang('ThisFieldIsRequired'), 'required');
		}
	} else {
		if ($list['lastname'] == 1) {
			//	LAST NAME
			$form->addElement('text', 'lastname', get_lang('LastName'), array('size' => 40));
			if (api_get_setting('profile', 'name') !== 'true') {
				$form->freeze(array('lastname'));
			}
			$form->applyFilter(array('lastname'), 'stripslashes');
			$form->applyFilter(array('lastname'), 'trim');
			$form->addRule('lastname', get_lang('ThisFieldIsRequired'), 'required');
		}
		if ($list['firstname'] == 1 ) {
			//FIRST NAME
			$form->addElement('text', 'firstname', get_lang('FirstName'), array('size' => 40));
			if (api_get_setting('profile', 'name') !== 'true') {
				$form->freeze(array('firstname'));
			}
			$form->applyFilter(array('firstname'), 'stripslashes');
			$form->applyFilter(array('firstname'), 'trim');
			$form->addRule('firstname', get_lang('ThisFieldIsRequired'), 'required');
		}
	}

	if ($list['official_code'] == 1) {
		//	OFFICIAL CODE
		if (CONFVAL_ASK_FOR_OFFICIAL_CODE) {
			$form->addElement('text', 'official_code', get_lang('OfficialCode'), array('size' => 40));
			if (api_get_setting('profile', 'officialcode') !== 'true') {
				$form->freeze('official_code');
			}
			$form->applyFilter('official_code', 'stripslashes');
			$form->applyFilter('official_code', 'trim');
			if (api_get_setting('registration', 'officialcode') == 'true' && api_get_setting('profile', 'officialcode') == 'true') {
				$form->addRule('official_code', get_lang('ThisFieldIsRequired'), 'required');
			}
		}
	}
	if ($list['email'] == 1) {
		//	EMAIL
		$form->addElement('text', 'email', get_lang('Email'), array('size' => 40));
		if (api_get_setting('profile', 'email') !== 'true') {
			$form->freeze('email');
		}
		$form->applyFilter('email', 'stripslashes');
		$form->applyFilter('email', 'trim');
		if (api_get_setting('registration', 'email') == 'true') {
			$form->addRule('email', get_lang('ThisFieldIsRequired'), 'required');
		}
		$form->addRule('email', get_lang('EmailWrong'), 'email');
	}

	if ($list['phone'] == 1) {
		//	PHONE
		$form->addElement('text', 'phone', get_lang('phone'), array('size' => 20));
		if (api_get_setting('profile', 'phone') !== 'true') {
			$form->freeze('phone');
		}
		$form->applyFilter('phone', 'stripslashes');
		$form->applyFilter('phone', 'trim');
		if (api_get_setting('profile', 'phone') == 'true') {
			$form->addRule('phone', get_lang('ThisFieldIsRequired'), 'required');
		}
	}

	if ($list['language'] == 1) {
		//	LANGUAGE
		$form->addElement('select_language', 'language', get_lang('Language'));
		if (api_get_setting('profile', 'language') !== 'true') {
			$form->freeze('language');
		}
		if (api_get_setting('profile', 'language') == 'true') {
			$form->addRule('language', get_lang('ThisFieldIsRequired'), 'required');
		}
	}

	// EXTRA FIELDS
	$extra = UserManager :: get_extra_fields(0, 50, 5, 'ASC');
	$extra_data = UserManager :: get_extra_user_data($user_id, true);
	foreach ($extra as $id => $field_details) {
		if ($field_details[6] == 0) {
			continue;
		}

		if ($list['extra_' . $field_details[1]] == 1) {
			switch ($field_details[2]) {
				case USER_FIELD_TYPE_TEXT :
					$form->addElement('text', 'extra_' . $field_details[1], $field_details[3], array('size' => 40));
					$form->applyFilter('extra_' . $field_details[1], 'stripslashes');
					$form->applyFilter('extra_' . $field_details[1], 'trim');

					if ($field_details[7] == 0) {
						$form->freeze('extra_' . $field_details[1]);
					}
					break;
				case USER_FIELD_TYPE_TEXTAREA :
					$form->add_html_editor('extra_' . $field_details[1], $field_details[3], false, false, array('ToolbarSet' => 'Profile', 'Width' => '100%', 'Height' => '130'));
					$form->applyFilter('extra_' . $field_details[1], 'stripslashes');
					$form->applyFilter('extra_' . $field_details[1], 'trim');

					if ($field_details[7] == 0) {
						$form->freeze('extra_' . $field_details[1]);
					}
					break;
				case USER_FIELD_TYPE_RADIO :
					$group = array();
					foreach ($field_details[9] as $option_id => $option_details) {
						$options[$option_details[1]] = $option_details[2];
						$group[] = & HTML_QuickForm :: createElement('radio', 'extra_' . $field_details[1], $option_details[1], $option_details[2] . '<br />', $option_details[1]);
					}
					$form->addGroup($group, 'extra_' . $field_details[1], $field_details[3], '');

					if ($field_details[7] == 0) {
						$form->freeze('extra_' . $field_details[1]);
					}
					break;
				case USER_FIELD_TYPE_SELECT :
					$options = array();
					foreach ($field_details[9] as $option_id => $option_details) {
						$options[$option_details[1]] = $option_details[2];
					}
					$form->addElement('select', 'extra_' . $field_details[1], $field_details[3], $options, '');
					if ($field_details[7] == 0) {
						$form->freeze('extra_' . $field_details[1]);
					}
					break;
				case USER_FIELD_TYPE_SELECT_MULTIPLE :
					$options = array();
					foreach ($field_details[9] as $option_id => $option_details) {
						$options[$option_details[1]] = $option_details[2];
					}
					$form->addElement('select', 'extra_' . $field_details[1], $field_details[3], $options, array('multiple' => 'multiple'));
					if ($field_details[7] == 0) {
						$form->freeze('extra_' . $field_details[1]);
					}
					break;
				case USER_FIELD_TYPE_DATE :
					$form->addElement('datepickerdate', 'extra_' . $field_details[1], $field_details[3], array('form_name' => 'profile'));
					$form->_elements[$form->_elementIndex['extra_' . $field_details[1]]]->setLocalOption('minYear', 1900);
					$defaults['extra_'.$field_details[1]] = date('Y-m-d 12:00:00');
					$form -> setDefaults($defaults);
					if ($field_details[7] == 0) {
						$form->freeze('extra_' . $field_details[1]);
					}
					$form->applyFilter('theme', 'trim');
					break;
				case USER_FIELD_TYPE_DATETIME :
					$form->addElement('datepicker', 'extra_' . $field_details[1], $field_details[3], array('form_name' => 'profile'));
					$form->_elements[$form->_elementIndex['extra_'.$field_details[1]]]->setLocalOption('minYear', 1900);
					$defaults['extra_'.$field_details[1]] = date('Y-m-d 12:00:00');
					$form -> setDefaults($defaults);
					if ($field_details[7] == 0) {
						$form->freeze('extra_' . $field_details[1]);
					}
					$form->applyFilter('theme', 'trim');
					break;
				case USER_FIELD_TYPE_DOUBLE_SELECT :
					foreach ($field_details[9] as $key => $element) {
						if ($element[2][0] == '*') {
							$values['*'][$element[0]] = str_replace('*', '', $element[2]);
						} else {
							$values[0][$element[0]] = $element[2];
						}
					}
					$group = '';
					$group[] = & HTML_QuickForm :: createElement('select', 'extra_' . $field_details[1], '', $values[0], '');
					$group[] = & HTML_QuickForm :: createElement('select', 'extra_' . $field_details[1] . '*', '', $values['*'], '');
					$form->addGroup($group, 'extra_' . $field_details[1], $field_details[3], '&nbsp;');
					if ($field_details[7] == 0) {
						$form->freeze('extra_' . $field_details[1]);
					}

					// Recoding the selected values for double : if the user has selected certain values, we have to assign them to the correct select form
					if (key_exists('extra_' . $field_details[1], $extra_data)) {
						// Exploding all the selected values (of both select forms)
						$selected_values = explode(';', $extra_data['extra_' . $field_details[1]]);
						$extra_data['extra_' . $field_details[1]] = array();

						// Looping through the selected values and assigning the selected values to either the first or second select form
						foreach ($selected_values as $key => $selected_value) {
							if (key_exists($selected_value, $values[0])) {
								$extra_data['extra_' . $field_details[1]]['extra_' . $field_details[1]] = $selected_value;
							} else {
								$extra_data['extra_' . $field_details[1]]['extra_' . $field_details[1] . '*'] = $selected_value;
							}
						}
					}
					break;
				case USER_FIELD_TYPE_DIVIDER :
					$form->addElement('static', $field_details[1], '<br /><strong>' . $field_details[3] . '</strong>');
					break;
			}
			$form->addRule('extra_' . $field_details[1], get_lang('ThisFieldIsRequired'), 'required');
		}
	}
	$form->addElement('style_submit_button', '', get_lang('Next'), array('class' => 'next'));
	$user_data = array_merge($user_data, $extra_data);
	$form->setDefaults($user_data);
}

if ($survey_data['form_fields'] && $survey_data['anonymous'] == 0 && is_array($user_data) && !isset($_GET['show'])) {
	if ($form->validate()) {
		$user_data = $form->exportValues();
		if (is_array($user_data)) {
			if (count($user_data) > 0) {
				$extras = array();
				// Build SQL query
				$sql = "UPDATE $table_user SET";
				foreach ($user_data as $key => $value) {
					if (substr($key, 0, 6) == 'extra_') { //an extra field
						$extras[substr($key, 6)] = $value;
					} else {
						$sql .= " $key = '" . Database :: escape_string($value) . "',";
					}
				}
				// Remove trailing , from the query we have so far
				$sql = rtrim($sql, ',');
				$sql .= " WHERE user_id  = '" . $user_id . "'";
				Database::query($sql);
				// Update the extra fields
				if (is_array($extras)) {
					foreach ($extras as $key => $value) {
						$myres = UserManager :: update_extra_field_value($user_id, $key, $value);
					}
				}
				echo '<div id="survey_content" class="survey_content">' . get_lang('InformationUpdated') . ' ' . get_lang('PleaseFillSurvey') . '</div>';
			}
		}
		//$_GET['show_form'] = 0;
		//$show_form = 0;
		$_GET['show'] = 0;
		$show = 0;
		// We unset the sessions
		unset($_SESSION['paged_questions']);
		unset($_SESSION['page_questions_sec']);
		$paged_questions_sec = array();

	}
	//elseif ($_GET['show_form'] == 1) { // Displaying the field
	else {
		echo '<div id="survey_content" class="survey_content">' . get_lang('UpdateInformation') . '</div>';
		// We unset the sessions
		unset($_SESSION['paged_questions']);
		unset($_SESSION['page_questions_sec']);
		$paged_questions_sec = array();
		$form->display();
	}
}

// Displaying the survey thanks message
if (isset($_POST['finish_survey'])) {
	echo '<div id="survey_content" class="survey_content"><strong>'.get_lang('SurveyFinished').'</strong> <br />'.$survey_data['survey_thanks'].'</div>';
	survey_manager::update_survey_answered($survey_data['survey_id'], $survey_invitation['user'], $survey_invitation['survey_code']);
	unset($_SESSION['paged_questions']);
	unset($_SESSION['page_questions_sec']);
	Display :: display_footer();
	exit();
}

// Sets the random questions
$shuffle = '';
if ($survey_data['shuffle'] == 1) {
	$shuffle = ' BY RAND() ';
}

if (isset($_GET['show']) || isset($_POST['personality'])) {
	// Getting all the questions for this page and add them to a multidimensional array where the first index is the page.
	// As long as there is no pagebreak fount we keep adding questions to the page
	$questions_displayed = array();
	$counter = 0;
    $paged_questions = array();

	// If non-conditional survey
	if ($survey_data['survey_type'] === '0') {
		if (empty($_SESSION['paged_questions'])) {
    		$sql = "SELECT * FROM $table_survey_question
    				WHERE survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'
    				ORDER BY sort ASC";
    		$result = Database::query($sql);
    		while ($row = Database::fetch_array($result, 'ASSOC')) {
    			if ($row['type'] == 'pagebreak') {
    				$counter++;
    			} else {
    				// ids from question of the current survey
    				$paged_questions[$counter][] = $row['question_id'];
    			}
    		}
            $_SESSION['paged_questions'] = $paged_questions;
        } else {
        	$paged_questions = $_SESSION['paged_questions'];
        }

		if (key_exists($_GET['show'], $paged_questions)) {
			if (isset($_GET['user_id'])) {

				// Get the user into survey answer table (user or anonymus)
				$my_user_id=($survey_data['anonymous']==1) ? $_SESSION['surveyuser'] :api_get_user_id();

				$sql = "SELECT survey_question.survey_group_sec1, survey_question.survey_group_sec2, survey_question.survey_group_pri,
					survey_question.question_id, survey_question.survey_id, survey_question.survey_question, survey_question.display, survey_question.sort, survey_question.type, survey_question.max_value,
					survey_question_option.question_option_id, survey_question_option.option_text, survey_question_option.sort as option_sort
					FROM $table_survey_question survey_question
					LEFT JOIN $table_survey_question_option survey_question_option
					ON survey_question.question_id = survey_question_option.question_id
					WHERE survey_question.survey_id = '" . Database :: escape_string($survey_invitation['survey_id']) . "'
					AND survey_question.question_id NOT IN (SELECT sa.question_id FROM ".$table_survey_answer." sa WHERE sa.user='".$my_user_id."')
					ORDER BY survey_question.sort, survey_question_option.sort ASC";
			} else {

				$sql = "SELECT survey_question.survey_group_sec1, survey_question.survey_group_sec2, survey_question.survey_group_pri,
					survey_question.question_id, survey_question.survey_id, survey_question.survey_question, survey_question.display, survey_question.sort, survey_question.type, survey_question.max_value,
					survey_question_option.question_option_id, survey_question_option.option_text, survey_question_option.sort as option_sort
					FROM $table_survey_question survey_question
					LEFT JOIN $table_survey_question_option survey_question_option
					ON survey_question.question_id = survey_question_option.question_id
					WHERE survey_question.survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'
					AND survey_question.question_id IN (".implode(',',$paged_questions[$_GET['show']]).")
					ORDER BY survey_question.sort, survey_question_option.sort ASC";
			}

			$result = Database::query($sql);
			$question_counter_max = Database::num_rows($result);
			$counter = 0;
			$limit = 0;
			$questions = array();

			while ($row = Database :: fetch_array($result, 'ASSOC')) {

				// If the type is not a pagebreak we store it in the $questions array
				if ($row['type'] != 'pagebreak') {
					$questions[$row['sort']]['question_id'] = $row['question_id'];
					$questions[$row['sort']]['survey_id'] = $row['survey_id'];
					$questions[$row['sort']]['survey_question'] = $row['survey_question'];
					$questions[$row['sort']]['display'] = $row['display'];
					$questions[$row['sort']]['type'] = $row['type'];
					$questions[$row['sort']]['options'][$row['question_option_id']] = $row['option_text'];
					$questions[$row['sort']]['maximum_score'] = $row['max_value'];
				}
				// If the type is a pagebreak we are finished loading the questions for this page
				else {
					break;
				}
				$counter++;
			}
		}
	} elseif ($survey_data['survey_type'] === '1') {
		$my_survey_id=Database::escape_string($survey_invitation['survey_id']);
		$current_user = Database::escape_string($survey_invitation['user']);

		if (isset($_POST['personality'])) {
			// Compute the results to get the 3 groups nearest to the user's personality
			if ($shuffle == '') {
				$order = 'BY sort ASC ';
			} else {
				$order = $shuffle;
			}

			$answer_list = array();

			// Get current user results
			$results = array();
			$sql = "SELECT survey_group_pri, user, SUM(value) as value
					FROM $table_survey_answer as survey_answer INNER JOIN $table_survey_question as survey_question
					ON  (survey_question.question_id = survey_answer.question_id)
					WHERE survey_answer.survey_id='".$my_survey_id."' AND
					survey_answer.user='".$current_user."'
					GROUP BY survey_group_pri
					ORDER BY survey_group_pri
					";

			$result = Database::query($sql);
			while ($row = Database :: fetch_array($result)) {
				$answer_list['value'] = $row['value'];
				$answer_list['group'] = $row['survey_group_pri'];
				$results[] = $answer_list;
			}

			//echo '<br />'; print_r($results); echo '<br />';

			// Get the total score for each group of questions
			$totals = array();
			$sql = "SELECT SUM(temp.value) as value, temp.survey_group_pri FROM
					(SELECT MAX(value) as value,  survey_group_pri, survey_question.question_id
					FROM $table_survey_question as survey_question
					INNER JOIN $table_survey_question_option as survey_question_option
					ON (survey_question.question_id = survey_question_option.question_id)
					WHERE survey_question.survey_id='".$my_survey_id."'  AND  survey_group_sec1='0' AND survey_group_sec2='0'
					GROUP BY survey_group_pri, survey_question.question_id) as temp
					GROUP BY temp.survey_group_pri
					ORDER BY temp.survey_group_pri";

			$result = Database::query($sql);
			while ($row = Database::fetch_array($result)) {
				$list['value'] = $row['value'];
				$list['group'] = $row['survey_group_pri'];
				$totals[] = $list;
			}
			//echo '<pre>'; print_r($totals);

			$final_results = array();

            // Get a percentage score for each group
			for ($i = 0; $i < count($totals); $i++) {
				for ($j = 0; $j < count($results); $j++) {
					if ($totals[$i]['group'] == $results[$j]['group']) {
						$group = $totals[$i]['group'];
						$porcen = ($results[$j]['value'] / $totals[$i]['value']);
						$final_results[$group] = $porcen;
					}
				}
			}

			// Sort the results by score (getting a list of group IDs by score into $groups)
			arsort($final_results);
			$groups=array_keys($final_results);
			/*
            echo '<pre>';
			echo 'Group id =>  %';
			echo '<br />';
			print_r($final_results);
            echo '</pre>';
		    */
			$result = array();
			$count_result = 0;
			foreach ($final_results as $key => & $sub_result) {
				$result[] = array('group' => $key, 'value' => $sub_result);
				$count_result++;
			}

			/*
			//i.e 70% - 70% -70% 70%  $equal_count =3
			while (1) {
				if ($result[$i]['value']  == $result[$i+1]['value']) {
					$equal_count++;
				} else {
					break;
				}
				$i++;
			}
			echo 'eq'. $equal_count;
			echo '<br />';
			if 	($equal_count == 0) {
				//i.e 70% 70% -60% 60%  $equal_count = 1 only we get the first 2 options
				if (($result[0]['value'] == $result[1]['value'])  &&  ($result[2]['value'] == $result[3]['value'])) {
					$group_cant = 1;
				} else {
					// By default we chose the highest 3
					$group_cant=2;
				}
			} elseif ($equal_count == 2) {
				$group_cant = 2;
			} else {
				$group_cant = -1;
			}
			*/

			// i.e 70% - 70% -70% 70%  $equal_count =3

			$i = 0;
			$group_cant = 0;
			$equal_count = 0;
			// This is the case if the user does not select any question
			if ($count_result > 0) {
				// Count the number of scores equal to the first
				while (1) {
					if ($result[$i]['value'] == $result[$i + 1]['value']) {
						$equal_count++;
					} else {
						break;
					}
					$i++;
				}
			} else {
				// We force the exit of the survey undeterminated
				$equal_count=10;
			}
			//echo '<pre>';
			//print_r($result);

            // If we have only 3 or less equal scores (i.e. 0,1 or 2 equalities), then we can use the three first groups
			if ($equal_count < 4) {
				// If there is one or less score equalities
				if ($equal_count === 0 || $equal_count === 1) {
					// i.e 70% - 70% -60% - 60%  $equal_count = 1 we only get the first 2 options
					if (($result[0]['value'] == $result[1]['value']) && ($result[2]['value'] == $result[3]['value'])) {
						$group_cant = 1;
					}
					// i.e 70% - 70% -0% - 0% 	-	$equal_count = 0 we only get the first 2 options
					/*elseif (($result[0]['value'] == $result[1]['value']) && ($result[1]['value'] != $result[2]['value'])) {
						$group_cant = 0;
					}*/
					/*
					// i.e 70% - 70% -60% - 60%  $equal_count = 0 we only get the first 2 options
					elseif (($result[0]['value'] == $result[1]['value'])  &&  ($result[2]['value'] == $result[3]['value'])) {
						$group_cant = 0;
					}*/
					// i.e. 80% - 70% - 70% - 70%
					elseif (($result[0]['value'] != $result[1]['value']) && ($result[1]['value'] == $result[2]['value']) && ($result[2]['value'] == $result[3]['value'])) {
						$group_cant = 0;
					} else {
						// i.e. 80% - 70% - 70% - 50
						// i.e. 80% - 80% - 70% - 50

						// By default we choose the highest 3
						$group_cant = 2;
					}
				} else {
					// If there are two score equalities
					$group_cant = $equal_count;
				}

				//@todo Translate these comments.
				// conditional_status
				// 0 no determinado
				// 1 determinado
				// 2 un solo valor
				// 3 valores iguales

				if ($group_cant > 0) {
					//echo '$equal_count'.$group_cant;
					// We only get highest 3
					$secondary = '';
					$combi = '';

					for ($i = 0; $i <= $group_cant; $i++) {
						$group1 = $groups[$i];
						$group2 = $groups[$i + 1];
						// Here we made all the posibilities with the 3 groups
						if ($group_cant == 2 && $i == $group_cant) {
							$group2 = $groups[0];
							$secondary .= " OR ( survey_group_sec1 = '$group1' AND  survey_group_sec2 = '$group2') ";
							$secondary .= " OR ( survey_group_sec1 = '$group2' AND survey_group_sec2 = '$group1' ) ";
							$combi.= $group1.' - '.$group2." or ".$group2.' - '.$group1.'<br />';
						} else {
							if ($i != 0) {
								$secondary .= " OR ( survey_group_sec1 = '$group1' AND  survey_group_sec2 = '$group2') ";
								$secondary .= " OR ( survey_group_sec1 = '$group2' AND survey_group_sec2 = '$group1' ) ";
								$combi.= $group1.' - '.$group2." or ".$group2.' - '.$group1.'<br />';
							} else {
								$secondary .= " ( survey_group_sec1 = '$group1' AND  survey_group_sec2 = '$group2') ";
								$secondary .= " OR ( survey_group_sec1 = '$group2' AND survey_group_sec2 = '$group1' ) ";
								$combi.= $group1.' - '.$group2." or ".$group2.' - '.$group1.'<br />';
							}
						}
					}
					/*
                    echo '<pre>';
                    echo 'Pair of Groups <br /><br />';
					echo $combi;
					echo '</pre>';
					*/
					// Create the new select with the questions from the secondary phase
					if (empty($_SESSION['page_questions_sec']) && !is_array($_SESSION['page_questions_sec']) && count($_SESSION['page_questions_sec'] == 0)) {

    					$sql = "SELECT * FROM $table_survey_question
    								 WHERE survey_id = '".$my_survey_id."'
    							  	 AND ($secondary )
    								 ORDER BY sort ASC";
    					$result = Database::query($sql);
    					$counter = 0;
    					while ($row = Database::fetch_array($result, 'ASSOC')) {
    						if ($survey_data['one_question_per_page'] == 1) {
    							$paged_questions_sec[$counter][] = $row['question_id'];
    							$counter++;
    						} elseif ($row['type'] == 'pagebreak') {
    							$counter++;
							} else {
    							// ids from question of the current survey
    							$paged_questions_sec[$counter][] = $row['question_id'];
    						}
    					}
                        $_SESSION['paged_questions_sec'] = $paged_questions_sec;
                    } else {
                    	$paged_questions_sec = $_SESSION['paged_questions_sec'];
                    }
					//print_r($paged_questions_sec);

                    $paged_questions = $_SESSION['paged_questions']; // For the sake of pages counting
                    //$paged_questions = $paged_questions_sec; // For the sake of pages counting coming up at display time...

					if ($shuffle == '') {
						$shuffle = ' BY survey_question.sort, survey_question_option.sort ASC ';
					}

					//$val = 0;
					//if ($survey_data['one_question_per_page'] == 0) {
						$val = (int)$_POST['personality'];
					//}
					//echo '<pre>'; print_r($paged_questions_sec); echo '</pre>';
					if (is_array($paged_questions_sec)) {

						$sql = "SELECT survey_question.survey_group_sec1, survey_question.survey_group_sec2, survey_question.survey_group_pri,
								survey_question.question_id, survey_question.survey_id, survey_question.survey_question, survey_question.display, survey_question.sort, survey_question.type, survey_question.max_value,
								survey_question_option.question_option_id, survey_question_option.option_text, survey_question_option.sort as option_sort
								FROM $table_survey_question survey_question
								LEFT JOIN $table_survey_question_option survey_question_option
								ON survey_question.question_id = survey_question_option.question_id
								WHERE survey_question.survey_id = '".$my_survey_id."'
								AND survey_question.question_id IN (".implode(',',$paged_questions_sec[$val]).")
								ORDER  $shuffle ";

						$result = Database::query($sql);
						$question_counter_max = Database::num_rows($result);
						$counter = 0;
						$limit = 0;
						$questions = array();
						while ($row = Database::fetch_array($result, 'ASSOC')) {
							// If the type is not a pagebreak we store it in the $questions array
							if ($row['type'] != 'pagebreak') {
								$questions[$row['sort']]['question_id'] = $row['question_id'];
								$questions[$row['sort']]['survey_id'] = $row['survey_id'];
								$questions[$row['sort']]['survey_question'] = $row['survey_question'];
								$questions[$row['sort']]['display'] = $row['display'];
								$questions[$row['sort']]['type'] = $row['type'];
								$questions[$row['sort']]['options'][$row['question_option_id']] = $row['option_text'];
								$questions[$row['sort']]['maximum_score'] = $row['max_value'];
								// Personality params
								$questions[$row['sort']]['survey_group_sec1'] = $row['survey_group_sec1'];
								$questions[$row['sort']]['survey_group_sec2'] = $row['survey_group_sec2'];
								$questions[$row['sort']]['survey_group_pri'] = $row['survey_group_pri'];
							}
							// If the type is a pagebreak we are finished loading the questions for this page
							else {
								break;
							}
							$counter++;
						}
					} else {
						echo get_lang('SurveyUndetermined');
					}
				} else {
					echo get_lang('SurveyUndetermined');
				}
			} else {
				echo get_lang('SurveyUndetermined');
			}
		} else {
			// We need this variable only in the 2nd set of questions when personality is set.
			unset($_SESSION['page_questions_sec']);
			$paged_questions_sec=array();

			// Only the questions from the basic group
			// the 50 questions A B C D E F G
			$order_sql = $shuffle;
			if ($shuffle == '') {
				$order_sql=' BY question_id ';
			}

            if (empty($_SESSION['paged_questions'])) {
    			$sql = "SELECT * FROM $table_survey_question
    						 WHERE survey_id = '".Database::escape_string($survey_invitation['survey_id'])."'
    					  	 AND survey_group_sec1='0' AND survey_group_sec2='0'
    						 ORDER ".$order_sql." ";
    			//echo '<br />'; echo '<br />';
    			$result = Database::query($sql);
    			$counter = 0;
    			while ($row = Database::fetch_array($result, 'ASSOC')) {
    				if ($survey_data['one_question_per_page'] == 1) {
    					$paged_questions[$counter][] = $row['question_id'];
    					$counter++;
					} else {
						if ($row['type'] == 'pagebreak') {
    						$counter++;
						} else {
    						// ids from question of the current survey
    						$paged_questions[$counter][] = $row['question_id'];
    					}
    				}
    			}
                $_SESSION['paged_questions'] = $paged_questions;
            } else {
            	$paged_questions = $_SESSION['paged_questions'];
            }

			//print_r($paged_questions);
            //print_r($paged_questions);
			//if (key_exists($_GET['show'], $paged_questions)) {
			$order_sql = $shuffle;
			if ($shuffle == '') {
				$order_sql=' BY survey_question.sort, survey_question_option.sort ASC ';
			}

			//$val = 0;
			//if ($survey_data['one_question_per_page'] == 0) {
				$val = $_GET['show'];
			//}
			//echo '<pre>'; print_r($paged_questions); echo $val;

			$result = null;
			if ($val != '') {
				$imploded = implode(',', $paged_questions[$val]);
				if ($imploded != '') {
					// The answers are always in the same order NO shuffle
					$order_sql = ' BY survey_question.sort, survey_question_option.sort ASC ';
					$sql = "SELECT survey_question.survey_group_sec1, survey_question.survey_group_sec2, survey_question.survey_group_pri,
							survey_question.question_id, survey_question.survey_id, survey_question.survey_question, survey_question.display, survey_question.sort, survey_question.type, survey_question.max_value,
							survey_question_option.question_option_id, survey_question_option.option_text, survey_question_option.sort as option_sort
							FROM $table_survey_question survey_question
							LEFT JOIN $table_survey_question_option survey_question_option
							ON survey_question.question_id = survey_question_option.question_id
							WHERE survey_question.survey_id = '" . Database :: escape_string($survey_invitation['survey_id']) . "'
							AND survey_question.question_id IN (" .$imploded. ")
							ORDER $order_sql ";
					$result = Database::query($sql);
					$question_counter_max = Database :: num_rows($result);
				}
			}
			if (!is_null($result)) {
				$counter = 0;
				$limit = 0;
				$questions = array();
				while ($row = Database :: fetch_array($result, 'ASSOC')) {
					// If the type is not a pagebreak we store it in the $questions array
					if ($row['type'] != 'pagebreak') {
						$questions[$row['sort']]['question_id'] = $row['question_id'];
						$questions[$row['sort']]['survey_id'] = $row['survey_id'];
						$questions[$row['sort']]['survey_question'] = $row['survey_question'];
						$questions[$row['sort']]['display'] = $row['display'];
						$questions[$row['sort']]['type'] = $row['type'];
						$questions[$row['sort']]['options'][$row['question_option_id']] = $row['option_text'];
						$questions[$row['sort']]['maximum_score'] = $row['max_value'];
						// Personality params
						$questions[$row['sort']]['survey_group_sec1'] = $row['survey_group_sec1'];
						$questions[$row['sort']]['survey_group_sec2'] = $row['survey_group_sec2'];
						$questions[$row['sort']]['survey_group_pri'] = $row['survey_group_pri'];
					}
					// If the type is a pagebreak we are finished loading the questions for this page
					else {
						break;
					}
					$counter++;
				}
			}
		}
	} else { // In case it's another type than 0 or 1
        echo get_lang('ErrorSurveyTypeUnknown');
    }
}

// Selecting the maximum number of pages
$sql = "SELECT * FROM $table_survey_question WHERE type='".Database::escape_string('pagebreak')."' AND survey_id='".Database::escape_string($survey_invitation['survey_id'])."'";
$result = Database::query($sql);
$numberofpages = Database::num_rows($result) + 1;

// Displaying the form with the questions
if (isset($_GET['show'])) {
	$show = (int)$_GET['show'] + 1;
} else {
	$show = 0;
}

// Displaying the form with the questions
if (isset($_POST['personality'])) {
	$personality = (int)$_POST['personality'] + 1;
} else {
	$personality = 0;
}

// Displaying the form with the questions
$g_c = isset($_GET['course']) ? Security::remove_XSS($_GET['course']) : '';
$g_ic = isset($_GET['invitationcode']) ? Security::remove_XSS($_GET['invitationcode']) : '';
$g_cr = isset($_GET['cidReq']) ? Security::remove_XSS($_GET['cidReq']) : '';
$p_l = isset($_POST['language']) ? Security::remove_XSS($_POST['language']) : '';

$add_parameters = isset($_GET['user_id']) ? 'user_id='.$_GET['user_id'].'&amp;' : '';

echo '<form id="question" name="question" method="post" action="' . api_get_self() .'?'.$add_parameters. 'course=' . $g_c . '&invitationcode=' . $g_ic . '&show=' . $show . '&cidReq=' . $g_cr . '">';
echo '<input type="hidden" name="language" value="'.$p_l.'" />';

if (isset($questions) && is_array($questions)) {
	foreach ($questions as $key => & $question) {
		$ch_type = 'ch_'.$question['type'];
		$display = new $ch_type;
		$display->render_question($question);
	}
}

if ($survey_data['survey_type'] === '0') {
	if ($survey_data['show_form_profile'] == 0) {
		// The normal survey as always
		if (($show < $numberofpages) || !$_GET['show']) { //$show = $_GET['show'] + 1
			//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . ' " class="next" />';
			echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('NextQuestion').'</button>';
		}

		if ($show >= $numberofpages && $_GET['show']) {
			//echo '<input type="submit" name="finish_survey" value="' . get_lang('FinishSurvey') . '" class="next" />';
			echo '<button type="submit" name="finish_survey" class="next">'.get_lang('FinishSurvey').'</button>';
		}
	} else {
		// The normal survey as always but with the form profile
		if (isset($_GET['show'])) {
			$numberofpages = count($paged_questions);
			if (($show < $numberofpages) || !$_GET['show']) { //$show = $_GET['show'] + 1
				//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . '" class="next" />';
				echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
			}

			if ($show >= $numberofpages && $_GET['show'] ) {
				//echo '<input type="submit" name="finish_survey" value="' . get_lang('FinishSurvey') . '" class="next" />';
				echo '<button type="submit" name="finish_survey" class="next">'.get_lang('FinishSurvey').'</button>';
			}
		}
	}
} elseif ($survey_data['survey_type'] === '1') { //conditional/personality-test type survey
	if (isset($_GET['show']) || isset($_POST['personality'])) {
		$numberofpages = count($paged_questions);
		//echo '<br />'; echo 'num pages norma:'.$numberofpages; echo '<br />';
		//echo '<pre>'; print_r($paged_questions_sec);
		if (!empty ($paged_questions_sec) && count($paged_questions_sec) > 0) {
			// In case we're in the second phase, also sum the second group questions
			//echo 'pagesec :'.count($paged_questions_sec);
			$numberofpages += count($paged_questions_sec);
			//echo 'pagesec :';
		} else {
			// We need this variable only if personality == 1
			unset($_SESSION['page_questions_sec']);
			$paged_questions_sec = array();
		}

		/*echo '<br />';
		echo 'num pages:'.$numberofpages; echo '<br />';
		echo 'show :'.$show;echo '<br />';
		echo 'personality :'.$personality;
		echo '<br />';
		*/
		//echo $show.' / '.$numberofpages.'<br />';
		if ($personality == 0)
		if (($show <= $numberofpages) || !$_GET['show']) { //$show = $_GET['show'] + 1
			//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . ' " class="next" />';
			echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
			if ($survey_data['one_question_per_page'] == 0) {
				if ($personality >= 0) {
					echo '<input type="hidden" name="personality" value="' . $personality . '">';
				}
			} else {
				if ($personality > 0) {
					echo '<input type="hidden" name="personality" value="' . $personality . '">';
				}
			}

			if ($numberofpages == $show) {
				echo '<input type="hidden" name="personality" value="' . $personality . '">';
			}
		}

		if ($show > $numberofpages && $_GET['show']  && $personality == 0) {
			echo '<input type="hidden" name="personality" value="' . $personality . '">';
			//$numberofpages = count($paged_questions);
			//echo $numberofpages = count($paged_questions_sec);
			//echo $personality.' / '.$numberofpages;
			//echo '<br />';
			//if ($personality > count($paged_questions_sec) - 1)
			//|| $numberofpages == $show  +$personality +1
			//echo $show + $personality;
			//echo $numberofpages;
		} elseif ($personality > 0) {
			if ($survey_data['one_question_per_page'] == 1) {
				if ($show >= $numberofpages) {
					//echo '<input type="submit" name="finish_survey" value="' . get_lang('FinishSurvey') . ' " class="next" />';
					echo '<button type="submit" name="finish_survey" class="next">'.get_lang('FinishSurvey').'</button>';
				} else {
					echo '<input type="hidden" name="personality" value="' . $personality . '">';
					//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . '" class="next" />';
					echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
				}
			} else {
				// if the personality test hidden input was set.
				//echo '<input type="submit" name="finish_survey" value="' . get_lang('FinishSurvey') . ' " class="next" />';
				echo '<button type="submit" name="finish_survey" class="next">'.get_lang('FinishSurvey').'</button>';
			}
		}
	}
	// This is the case when the show_profile_form is true but there are not form_fields
	elseif ($survey_data['form_fields'] == '') {
		//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . ' " class="next" />';
		echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
	} elseif(!is_array($user_data)) {
		// If the user is not registered in the platform we do not show the form to update his information
		//echo '<input type="submit" name="next_survey_page" value="' . get_lang('Next') . ' " class="next" />';
		echo '<button type="submit" name="next_survey_page" class="next">'.get_lang('Next').'</button>';
	}
}
echo '</form>';

// Footer
Display :: display_footer();

/**
 * Check whether this survey has ended. If so, display message and exit rhis script
 */
function check_time_availability($surv_data) {
    $start_date = mktime(0, 0, 0, substr($surv_data['start_date'], 5, 2), substr($surv_data['start_date'], 8, 2), substr($surv_data['start_date'], 0, 4));
    $end_date = mktime(0, 0, 0, substr($surv_data['end_date'], 5, 2), substr($surv_data['end_date'], 8, 2), substr($surv_data['end_date'], 0, 4));
    $cur_date = time();

    if ($cur_date < $start_date) {
        Display :: display_warning_message(get_lang('SurveyNotAvailableYet'), false);
        Display :: display_footer();
        exit;
    }
    if ($cur_date > $end_date) {
        Display :: display_warning_message(get_lang('SurveyNotAvailableAnymore'), false);
        Display :: display_footer();
        exit;
    }
}