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Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/exercise/overview.php

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<?php
/* For licensing terms, see /license.txt */
/**
* Exercise preview.
*
* @author Julio Montoya <gugli100@gmail.com>
*/
$use_anonymous = true;
require_once __DIR__.'/../inc/global.inc.php';
$current_course_tool = TOOL_QUIZ;
Exercise::cleanSessionVariables();
$this_section = SECTION_COURSES;
$js = '<script>'.api_get_language_translate_html().'</script>';
$htmlHeadXtra[] = $js;
// Notice for unauthorized people.
api_protect_course_script(true);
$sessionId = api_get_session_id();
$courseCode = api_get_course_id();
$exercise_id = isset($_REQUEST['exerciseId']) ? (int) $_REQUEST['exerciseId'] : 0;
$objExercise = new Exercise();
$result = $objExercise->read($exercise_id, true);
if (!$result) {
api_not_allowed(true);
}
if ('true' === api_get_plugin_setting('positioning', 'tool_enable')) {
$plugin = Positioning::create();
if ($plugin->blockFinalExercise(api_get_user_id(), $exercise_id, api_get_course_int_id(), $sessionId)) {
api_not_allowed(true);
}
}
$learnpath_id = isset($_REQUEST['learnpath_id']) ? (int) $_REQUEST['learnpath_id'] : null;
$learnpath_item_id = isset($_REQUEST['learnpath_item_id']) ? (int) $_REQUEST['learnpath_item_id'] : null;
$learnpathItemViewId = isset($_REQUEST['learnpath_item_view_id']) ? (int) $_REQUEST['learnpath_item_view_id'] : null;
$origin = api_get_origin();
$logInfo = [
'tool' => TOOL_QUIZ,
'tool_id' => $exercise_id,
'action' => $learnpath_id ? 'learnpath_id' : '',
'action_details' => $learnpath_id ?: '',
];
Event::registerLog($logInfo);
$interbreadcrumb[] = [
'url' => 'exercise.php?'.api_get_cidreq(),
'name' => get_lang('Exercises'),
];
$interbreadcrumb[] = ['url' => '#', 'name' => Security::remove_XSS($objExercise->selectTitle(true))];
$time_control = false;
$clock_expired_time = ExerciseLib::get_session_time_control_key($objExercise->iid, $learnpath_id, $learnpath_item_id);
if ($objExercise->expired_time != 0 && !empty($clock_expired_time)) {
$time_control = true;
}
$exerciseUrlParams = [
'exerciseId' => $objExercise->iid,
'learnpath_id' => $learnpath_id,
'learnpath_item_id' => $learnpath_item_id,
'learnpath_item_view_id' => $learnpathItemViewId
];
if (isset($_GET['preview'])) {
$exerciseUrlParams['preview'] = 1;
}
// It is a lti provider
if (isset($_GET['lti_launch_id'])) {
$exerciseUrlParams['lti_launch_id'] = Security::remove_XSS($_GET['lti_launch_id']);
}
$exercise_url = api_get_path(WEB_CODE_PATH).'exercise/exercise_submit.php?'.
api_get_cidreq().'&'.http_build_query($exerciseUrlParams);
if ($time_control) {
// Get time left for expiring time
$time_left = api_strtotime($clock_expired_time, 'UTC') - time();
$htmlHeadXtra[] = api_get_css(api_get_path(WEB_LIBRARY_PATH).'javascript/epiclock/stylesheet/jquery.epiclock.css');
$htmlHeadXtra[] = api_get_css(api_get_path(WEB_LIBRARY_PATH).'javascript/epiclock/renderers/minute/epiclock.minute.css');
$htmlHeadXtra[] = api_get_js('epiclock/javascript/jquery.dateformat.min.js');
$htmlHeadXtra[] = api_get_js('epiclock/javascript/jquery.epiclock.min.js');
$htmlHeadXtra[] = api_get_js('epiclock/renderers/minute/epiclock.minute.js');
$htmlHeadXtra[] = $objExercise->showTimeControlJS($time_left, $exercise_url);
}
if (!in_array($origin, ['learnpath', 'embeddable', 'mobileapp', 'iframe'])) {
SessionManager::addFlashSessionReadOnly();
Display::display_header();
} else {
$htmlHeadXtra[] = "
<style>
body { background: none;}
</style>
";
Display::display_reduced_header();
}
if ($origin === 'mobileapp') {
echo '<div class="actions">';
echo '<a href="javascript:window.history.go(-1);">'.
Display::return_icon('back.png', get_lang('GoBackToQuestionList'), [], 32).'</a>';
echo '</div>';
}
$html = '';
$message = '';
$html .= '<div class="exercise-overview">';
$is_allowed_to_edit = api_is_allowed_to_edit(null, true);
$hideIp = api_get_configuration_value('exercise_hide_ip');
$editLink = '';
if ($is_allowed_to_edit) {
if ($objExercise->sessionId == $sessionId) {
$editLink = Display::url(
Display::return_icon('edit.png', get_lang('Edit'), [], ICON_SIZE_SMALL),
api_get_path(WEB_CODE_PATH).'exercise/admin.php?'.api_get_cidreq().'&exerciseId='.$objExercise->iid
);
}
$editLink .= Display::url(
Display::return_icon('test_results.png', get_lang('Results'), [], ICON_SIZE_SMALL),
api_get_path(WEB_CODE_PATH).'exercise/exercise_report.php?'.api_get_cidreq().'&exerciseId='.$objExercise->iid,
['title' => get_lang('Results')]
);
}
$iconExercise = Display::return_icon('test-quiz.png', null, [], ICON_SIZE_MEDIUM);
// Exercise name.
if (api_get_configuration_value('save_titles_as_html')) {
$html .= Display::div(
Security::remove_XSS($objExercise->get_formated_title()).PHP_EOL.$editLink
);
} else {
$html .= Display::page_header(
$iconExercise.PHP_EOL.Security::remove_XSS($objExercise->selectTitle()).PHP_EOL.$editLink
);
}
// Exercise description.
if (!empty($objExercise->description)) {
$html .= Display::div(Security::remove_XSS($objExercise->description, COURSEMANAGERLOWSECURITY), ['class' => 'exercise_description']);
}
$exercise_stat_info = $objExercise->get_stat_track_exercise_info(
$learnpath_id,
$learnpath_item_id,
0
);
//1. Check if this is a new attempt or a previous
$label = get_lang('StartTest');
if ($time_control && !empty($clock_expired_time) || isset($exercise_stat_info['exe_id'])) {
$label = get_lang('ContinueTest');
}
if (isset($exercise_stat_info['exe_id'])) {
$message = Display::return_message(get_lang('YouTriedToResolveThisExerciseEarlier'));
}
// 2. Exercise button
// Notice we not add there the lp_item_view_id because is not already generated
$exercise_url_button = Display::url(
$label,
$exercise_url,
['class' => 'btn btn-success btn-large']
);
$btnCheck = '';
$quizCheckButtonEnabled = api_get_configuration_value('quiz_check_button_enable');
if ($quizCheckButtonEnabled) {
$btnCheck = Display::button(
'quiz_check_request_button',
Display::returnFontAwesomeIcon('spinner', '', true, 'fa-spin hidden').' '.get_lang('TestYourBrowser'),
[
'type' => 'button',
'role' => 'button',
'id' => 'quiz-check-request-button',
'class' => 'btn btn-default',
'data-loading-text' => get_lang('Loading'),
'autocomplete' => 'off',
]
).PHP_EOL.'<strong id="quiz-check-request-text"></strong>';
}
// 3. Checking visibility of the exercise (overwrites the exercise button).
$visible_return = $objExercise->is_visible(
$learnpath_id,
$learnpath_item_id,
null,
true,
$sessionId
);
// Exercise is not visible remove the button
if ($visible_return['value'] == false) {
if ($is_allowed_to_edit) {
$message = Display::return_message(
get_lang('ThisItemIsInvisibleForStudentsButYouHaveAccessAsTeacher'),
'warning'
);
} else {
$message = $visible_return['message'];
$exercise_url_button = null;
}
}
$advancedMessage = RemedialCoursePlugin::create()->getAdvancedCourseList(
$objExercise,
api_get_user_id(),
api_get_session_id(),
$learnpath_id ?: 0,
$learnpath_item_id ?: 0
);
if (!empty($advancedMessage)) {
$message .= Display::return_message(
$advancedMessage,
'info',
false
);
}
$remedialMessage = RemedialCoursePlugin::create()->getRemedialCourseList(
$objExercise,
api_get_user_id(),
api_get_session_id(),
false,
$learnpath_id ?: 0,
$learnpath_item_id ?: 0
);
if (null != $remedialMessage) {
$message .= Display::return_message($remedialMessage, 'warning', false);
}
if (!api_is_allowed_to_session_edit()) {
$exercise_url_button = null;
}
$attempts = Event::getExerciseResultsByUser(
api_get_user_id(),
$objExercise->iid,
api_get_course_int_id(),
api_get_session_id(),
$learnpath_id,
$learnpath_item_id,
'desc'
);
$counter = count($attempts);
$my_attempt_array = [];
$table_content = '';
/* Make a special case for IE, which doesn't seem to be able to handle the
* results popup -> send it to the full results page */
$browser = new Browser();
$current_browser = $browser->getBrowser();
$url_suffix = '';
$btn_class = ' ';
if ($current_browser == 'Internet Explorer') {
$url_suffix = '&show_headers=1';
$btn_class = '';
}
$blockShowAnswers = false;
if (in_array(
$objExercise->results_disabled,
[
RESULT_DISABLE_SHOW_SCORE_ATTEMPT_SHOW_ANSWERS_LAST_ATTEMPT,
//RESULT_DISABLE_SHOW_SCORE_ATTEMPT_SHOW_ANSWERS_LAST_ATTEMPT_NO_FEEDBACK,
RESULT_DISABLE_DONT_SHOW_SCORE_ONLY_IF_USER_FINISHES_ATTEMPTS_SHOW_ALWAYS_FEEDBACK,
])
) {
if (count($attempts) < $objExercise->attempts) {
$blockShowAnswers = true;
}
}
$certificateBlock = '';
if (!empty($attempts)) {
$i = $counter;
foreach ($attempts as $attempt_result) {
if (empty($certificateBlock)) {
$certificateBlock = ExerciseLib::generateAndShowCertificateBlock(
$attempt_result['exe_result'],
$attempt_result['exe_weighting'],
$objExercise,
$attempt_result['exe_user_id'],
$courseCode,
$sessionId
);
}
$score = ExerciseLib::show_score($attempt_result['exe_result'], $attempt_result['exe_weighting']);
$attempt_url = api_get_path(WEB_CODE_PATH).'exercise/result.php?';
$attempt_url .= api_get_cidreq().'&show_headers=1&';
$attempt_url .= http_build_query(['id' => $attempt_result['exe_id']]);
$attempt_url .= $url_suffix;
$attempt_link = Display::url(
get_lang('Show'),
$attempt_url,
[
'class' => $btn_class.'btn btn-default',
'data-title' => get_lang('Show'),
'data-size' => 'lg',
]
);
$teacher_revised = Display::label(get_lang('Validated'), 'success');
if ($attempt_result['attempt_revised'] == 0) {
$teacher_revised = Display::label(get_lang('NotValidated'), 'info');
}
$row = [
'count' => $i,
'date' => api_convert_and_format_date($attempt_result['start_date'], DATE_TIME_FORMAT_LONG),
'userIp' => $attempt_result['user_ip'],
];
if (api_is_anonymous() || $hideIp) {
unset($row['userIp']);
}
$attempt_link .= PHP_EOL.$teacher_revised;
if (in_array(
$objExercise->results_disabled,
[
RESULT_DISABLE_SHOW_SCORE_AND_EXPECTED_ANSWERS,
RESULT_DISABLE_SHOW_SCORE_AND_EXPECTED_ANSWERS_AND_RANKING,
RESULT_DISABLE_SHOW_SCORE_ONLY,
RESULT_DISABLE_SHOW_FINAL_SCORE_ONLY_WITH_CATEGORIES,
RESULT_DISABLE_SHOW_SCORE_ATTEMPT_SHOW_ANSWERS_LAST_ATTEMPT,
RESULT_DISABLE_SHOW_SCORE_ATTEMPT_SHOW_ANSWERS_LAST_ATTEMPT_NO_FEEDBACK,
RESULT_DISABLE_DONT_SHOW_SCORE_ONLY_IF_USER_FINISHES_ATTEMPTS_SHOW_ALWAYS_FEEDBACK,
RESULT_DISABLE_RANKING,
RESULT_DISABLE_SHOW_ONLY_IN_CORRECT_ANSWER,
]
)) {
$row['result'] = $score;
}
if (in_array(
$objExercise->results_disabled,
[
RESULT_DISABLE_SHOW_SCORE_AND_EXPECTED_ANSWERS,
RESULT_DISABLE_SHOW_SCORE_AND_EXPECTED_ANSWERS_AND_RANKING,
RESULT_DISABLE_SHOW_FINAL_SCORE_ONLY_WITH_CATEGORIES,
RESULT_DISABLE_SHOW_SCORE_ATTEMPT_SHOW_ANSWERS_LAST_ATTEMPT,
RESULT_DISABLE_SHOW_SCORE_ATTEMPT_SHOW_ANSWERS_LAST_ATTEMPT_NO_FEEDBACK,
RESULT_DISABLE_DONT_SHOW_SCORE_ONLY_IF_USER_FINISHES_ATTEMPTS_SHOW_ALWAYS_FEEDBACK,
RESULT_DISABLE_RANKING,
RESULT_DISABLE_SHOW_ONLY_IN_CORRECT_ANSWER,
]
) || (
$objExercise->results_disabled == RESULT_DISABLE_SHOW_SCORE_ONLY &&
$objExercise->getFeedbackType() == EXERCISE_FEEDBACK_TYPE_END
)
) {
if ($blockShowAnswers &&
$objExercise->results_disabled != RESULT_DISABLE_DONT_SHOW_SCORE_ONLY_IF_USER_FINISHES_ATTEMPTS_SHOW_ALWAYS_FEEDBACK
) {
$attempt_link = '';
}
if ($blockShowAnswers == true &&
$objExercise->results_disabled == RESULT_DISABLE_DONT_SHOW_SCORE_ONLY_IF_USER_FINISHES_ATTEMPTS_SHOW_ALWAYS_FEEDBACK
) {
if (isset($row['result'])) {
unset($row['result']);
}
}
if (!empty($objExercise->getResultAccess())) {
if (!$objExercise->hasResultsAccess($attempt_result)) {
$attempt_link = '';
}
}
$row['attempt_link'] = $attempt_link;
}
$my_attempt_array[] = $row;
$i--;
}
$header_names = [];
$table = new HTML_Table(['class' => 'table table-striped table-hover']);
// Hiding score and answer.
switch ($objExercise->results_disabled) {
case RESULT_DISABLE_DONT_SHOW_SCORE_ONLY_IF_USER_FINISHES_ATTEMPTS_SHOW_ALWAYS_FEEDBACK:
if ($blockShowAnswers) {
$header_names = [get_lang('Attempt'), get_lang('StartDate'), get_lang('IP'), get_lang('Details')];
} else {
$header_names = [
get_lang('Attempt'),
get_lang('StartDate'),
get_lang('IP'),
get_lang('Score'),
get_lang('Details'),
];
}
break;
case RESULT_DISABLE_SHOW_SCORE_ATTEMPT_SHOW_ANSWERS_LAST_ATTEMPT_NO_FEEDBACK:
case RESULT_DISABLE_SHOW_SCORE_ATTEMPT_SHOW_ANSWERS_LAST_ATTEMPT:
if ($blockShowAnswers) {
$header_names = [get_lang('Attempt'), get_lang('StartDate'), get_lang('IP'), get_lang('Score')];
} else {
$header_names = [
get_lang('Attempt'),
get_lang('StartDate'),
get_lang('IP'),
get_lang('Score'),
get_lang('Details'),
];
}
break;
case RESULT_DISABLE_SHOW_SCORE_AND_EXPECTED_ANSWERS:
case RESULT_DISABLE_SHOW_SCORE_AND_EXPECTED_ANSWERS_AND_RANKING:
case RESULT_DISABLE_SHOW_FINAL_SCORE_ONLY_WITH_CATEGORIES:
case RESULT_DISABLE_RANKING:
case RESULT_DISABLE_SHOW_ONLY_IN_CORRECT_ANSWER:
$header_names = [
get_lang('Attempt'),
get_lang('StartDate'),
get_lang('IP'),
get_lang('Score'),
get_lang('Details'),
];
break;
case RESULT_DISABLE_NO_SCORE_AND_EXPECTED_ANSWERS:
$header_names = [get_lang('Attempt'), get_lang('StartDate'), get_lang('IP')];
break;
case RESULT_DISABLE_SHOW_SCORE_ONLY:
if ($objExercise->getFeedbackType() != EXERCISE_FEEDBACK_TYPE_END) {
$header_names = [get_lang('Attempt'), get_lang('StartDate'), get_lang('IP'), get_lang('Score')];
} else {
$header_names = [
get_lang('Attempt'),
get_lang('StartDate'),
get_lang('IP'),
get_lang('Score'),
get_lang('Details'),
];
}
break;
}
if (api_is_anonymous() || $hideIp) {
unset($header_names[2]); // It removes the 3rd column related to IP
}
$column = 0;
foreach ($header_names as $item) {
$table->setHeaderContents(0, $column, $item);
$column++;
}
$row = 1;
if (!empty($my_attempt_array)) {
foreach ($my_attempt_array as $data) {
$column = 0;
$table->setCellContents($row, $column, $data);
$table->setRowAttributes($row, null, true);
$column++;
$row++;
}
}
$table_content = $table->toHtml();
}
$selectAttempts = $objExercise->selectAttempts();
if ($selectAttempts) {
$attempt_message = get_lang('Attempts').' '.$counter.' / '.$selectAttempts;
if ($counter == $selectAttempts) {
$attempt_message = Display::return_message($attempt_message, 'error');
} else {
$attempt_message = Display::return_message($attempt_message, 'info');
}
if ($visible_return['value'] == true) {
$message .= $attempt_message;
}
}
if ($time_control) {
$html .= $objExercise->returnTimeLeftDiv();
}
$html .= $message;
$disable = api_get_configuration_value('exercises_disable_new_attempts');
if ($disable && empty($exercise_stat_info)) {
$exercise_url_button = Display::return_message(get_lang('NewExerciseAttemptDisabled'));
}
$isLimitReached = ExerciseLib::isQuestionsLimitPerDayReached(
api_get_user_id(),
count($objExercise->get_validated_question_list()),
api_get_course_int_id(),
api_get_session_id()
);
if (!empty($exercise_url_button) && !$isLimitReached) {
if ($quizCheckButtonEnabled) {
$html .= Display::div(
$btnCheck,
['class' => 'exercise_overview_options']
);
$html .= '<br>';
}
$html .= Display::div(
Display::div(
$exercise_url_button,
['class' => 'exercise_overview_options']
),
['class' => 'options']
);
}
if ($isLimitReached) {
$maxQuestionsAnswered = (int) api_get_course_setting('quiz_question_limit_per_day');
$html .= Display::return_message(
sprintf(get_lang('QuizQuestionsLimitPerDayXReached'), $maxQuestionsAnswered),
'warning',
false
);
}
if (0 == $objExercise->getHideAttemptsTableOnStartPage()) {
$html .= Display::tag(
'div',
$table_content,
['class' => 'table-responsive']
);
}
$html .= '</div>';
if ($certificateBlock) {
$html .= PHP_EOL.$certificateBlock;
}
if ($quizCheckButtonEnabled) {
$quizCheckRequestUrl = api_get_path(WEB_AJAX_PATH).'exercise.ajax.php?'.api_get_cidreq().'&a=browser_test';
$params = http_build_query(
[
'exe_id' => 1,
'exerciseId' => $exercise_id,
'learnpath_id' => $learnpath_id,
'learnpath_item_id' => $learnpath_item_id,
'learnpath_item_view_id' => $learnpathItemViewId,
'reminder' => '0',
'type' => 'simple',
'question_id' => 23,
'choice[23]' => 45,
]
).'&'.api_get_cidreq();
$html .= "<script>
$(function () {
var btnTest = $('#quiz-check-request-button'),
iconBtnTest = btnTest.children('.fa.fa-spin');
btnTest.on('click', function (e) {
e.preventDefault();
btnTest.prop('disabled', true).removeClass('btn-success btn-danger').addClass('btn-default');
iconBtnTest.removeClass('hidden');
var txtResult = $('#quiz-check-request-text').removeClass('text-success text-danger').hide();
$
.when(
$.ajax({
url: '$quizCheckRequestUrl',
type: 'post',
data: '$params'
}),
$.ajax({
url: '$quizCheckRequestUrl',
type: 'post',
data: '$params&sleep=1'
})
)
.then(
function (xhr1, xhr2) {
var xhr1IsOk = !!xhr1 && xhr1[1] === 'success' && !!xhr1[0] && 'ok' === xhr1[0];
var xhr2IsOk = !!xhr2 && xhr2[1] === 'success' && !!xhr2[0] && 'ok' === xhr2[0];
if (xhr1IsOk && xhr2IsOk) {
btnTest.removeClass('btn-default btn-danger').addClass('btn-success');
txtResult.text(\"".get_lang('QuizBrowserCheckOK')."\").addClass('text-success').show();
} else {
btnTest.removeClass('btn-default btn-success').addClass('btn-danger');
txtResult.text(\"".get_lang('QuizBrowserCheckKO')."\").addClass('text-danger').show();
}
},
function () {
txtResult.text(\"".get_lang('QuizBrowserCheckKO')."\").addClass('text-danger').show();
btnTest.removeClass('btn-default btn-success').addClass('btn-danger');
}
)
.always(function () {
btnTest.prop('disabled', false);
iconBtnTest.addClass('hidden');
});
});
});
</script>";
}
echo $html;
Display::display_footer();