/**
* Main function to import an exercise.
*
* @param string $file path of the file
* @param array $backlog_message
*
* @return the id of the created exercise or false if the operation failed
*/
function import_exercise($file, &$backlog)
{
global $exercise_info;
global $element_pile;
global $non_HTML_tag_to_avoid;
global $record_item_body;
// used to specify the question directory where files could be found in relation in any question
global $questionTempDir;
// get required table names
$tbl_cdb_names = get_module_course_tbl(array('qwz_exercise', 'qwz_question'), claro_get_current_course_id());
$tbl_quiz_exercise = $tbl_cdb_names['qwz_exercise'];
$tbl_quiz_question = $tbl_cdb_names['qwz_question'];
// paths
$baseWorkDir = get_path('rootSys') . get_conf('tmpPathSys') . 'upload/';
// create temp dir for upload
if (!file_exists($baseWorkDir)) {
claro_mkdir($baseWorkDir, CLARO_FILE_PERMISSIONS);
}
$uploadDir = claro_mkdir_tmp($baseWorkDir);
// this function should return the dir name and not the full path ...
$uploadPath = str_replace($baseWorkDir, '', $uploadDir);
// set some default values for the new exercise
$exercise_info = array();
$exercise_info['name'] = preg_replace('/.zip$/i', '', $file);
$exercise_info['description'] = '';
$exercise_info['question'] = array();
// create parser and array to retrieve info from manifest
$element_pile = array();
//pile to known the depth in which we are
$module_info = array();
//array to store the info we need
// if file is not a .zip, then we cancel all
if (!preg_match('/.zip$/i', $_FILES['uploadedExercise']['name'])) {
$backlog->failure(get_lang('You must upload a zip file'));
return false;
}
//unzip the uploaded file in a tmp directory
if (!get_and_unzip_uploaded_exercise($baseWorkDir, $uploadPath)) {
$backlog->failure(get_lang('Upload failed'));
return false;
}
// find the different manifests for each question and parse them.
$exerciseHandle = opendir($uploadDir);
$question_number = 0;
$file_found = false;
// parse every subdirectory to search xml question files
while (false !== ($file = readdir($exerciseHandle))) {
if (is_dir($uploadDir . '/' . $file) && $file != "." && $file != "..") {
//find each manifest for each question repository found
$questionHandle = opendir($uploadDir . '/' . $file);
while (false !== ($questionFile = readdir($questionHandle))) {
if (preg_match('/.xml$/i', $questionFile)) {
list($parsingBacklog, $success) = parse_file($uploadDir, $file, $questionFile);
$backlog->append($parsingBacklog);
$file_found = true;
}
}
} elseif (preg_match('/.xml$/i', $file)) {
list($parsingBacklog, $success) = parse_file($uploadDir, '', $file);
$backlog->append($parsingBacklog);
$file_found = true;
}
// else ignore file
}
if (!$file_found) {
$backlog->failure(get_lang('No XML file found in the zip'));
return false;
}
//---------------------
//add exercise in tool
//---------------------
//1.create exercise
$exercise = new Exercise();
$exercise->setTitle($exercise_info['name']);
$exercise->setDescription($exercise_info['description']);
if ($exercise->validate()) {
$exercise_id = $exercise->save();
} else {
$backlog->failure(get_lang('There is an error in exercise data of imported file.'));
return false;
}
ksort($exercise_info['question'], SORT_NUMERIC);
//For each question found...
foreach ($exercise_info['question'] as $key => $question_array) {
//2.create question
$question = new Qti2Question();
$question->import($question_array);
if ($question->validate()) {
// I need to save the question after the answer because I need question id in answers
$question_id = $question->save();
//3.create answers
$question->setAnswer();
$question->answer->import($question_array);
if ($question->answer->validate()) {
$question->setGrade($question->answer->getGrade());
$question->save();
// save computed grade
$question->answer->save();
$exercise->addQuestion($question_id);
} else {
$backlog->failure(get_lang('Invalid answer') . ' : ' . $key);
}
} else {
$backlog->failure(get_lang('Invalid question') . ' : ' . $key);
}
}
// delete the temp dir where the exercise was unzipped
claro_delete_file($uploadDir);
return $exercise_id;
}
$displaySettings = true;
/*
* Execute commands
*/
if ($cmd == 'rmQu' && !is_null($quId)) {
$exercise->removeQuestion($quId);
}
if ($cmd == 'mvUp' && !is_null($quId)) {
$exercise->moveQuestionUp($quId);
}
if ($cmd == 'mvDown' && !is_null($quId)) {
$exercise->moveQuestionDown($quId);
}
if ($cmd == 'exEdit') {
$exercise->setTitle($_REQUEST['title']);
$exercise->setDescription($_REQUEST['description']);
$exercise->setDisplayType($_REQUEST['displayType']);
if (isset($_REQUEST['randomize']) && $_REQUEST['randomize']) {
$exercise->setShuffle($_REQUEST['questionDrawn']);
} else {
$exercise->setShuffle(0);
}
if (isset($_REQUEST['useSameShuffle']) && $_REQUEST['useSameShuffle']) {
$exercise->setUseSameShuffle($_REQUEST['useSameShuffle']);
} else {
$exercise->setUseSameShuffle(0);
}
$exercise->setShowAnswers($_REQUEST['showAnswers']);
$exercise->setStartDate(mktime($_REQUEST['startHour'], $_REQUEST['startMinute'], 0, $_REQUEST['startMonth'], $_REQUEST['startDay'], $_REQUEST['startYear']));
if (isset($_REQUEST['useEndDate']) && $_REQUEST['useEndDate']) {
$exercise->setEndDate(mktime($_REQUEST['endHour'], $_REQUEST['endMinute'], 0, $_REQUEST['endMonth'], $_REQUEST['endDay'], $_REQUEST['endYear']));
$pdf->SetSubject(claro_utf8_encode($exercise->getTitle()));
//set margins
$pdf->SetMargins(PDF_MARGIN_LEFT, PDF_MARGIN_TOP, PDF_MARGIN_RIGHT);
$pdf->SetHeaderMargin(PDF_MARGIN_HEADER);
$pdf->SetFooterMargin(PDF_MARGIN_FOOTER);
//set auto page breaks
$pdf->SetAutoPageBreak(TRUE, PDF_MARGIN_BOTTOM);
//set image scale factor
$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
$pdf->setPrintHeader(false);
// add a page
$pdf->AddPage();
$htmlcontent = '<div style="font-size: xx-large; font-weight: bold;">' . claro_htmlspecialchars($exercise->getTitle()) . '<div>' . "\n";
$pdf->writeHTML(claro_utf8_encode($htmlcontent, get_conf('charset')), true, 0, true, 0);
//change Img URL
$exercise->setDescription(claro_utf8_encode(change_img_url_for_pdf($exercise->getDescription()), get_conf('charset')));
//End change Img URL
$htmlcontent = '<div style="font-size: normal; font-weight: normal;">' . $exercise->getDescription() . '</div><br /><br />' . "\n";
$pdf->writeHTML(claro_utf8_encode($htmlcontent, get_conf('charset')), true, 0, true, 0);
$i = 1;
foreach ($questionList as $question) {
$htmlcontent = '<p><table cellspacing="4">' . "\n" . '<tbody>' . "\n" . '<tr>' . "\n" . '<th colspan="2" style="text-align: center; font-weight: bold; color: #693; background-color: #DEEECE;">' . get_lang('Question') . ' ' . $i . '</th>' . "\n" . '</tr>' . "\n" . '<tr>' . "\n" . '<td colspan="2">' . claro_htmlspecialchars(strip_tags($question['title'])) . '</td>' . "\n" . '</tr>' . "\n";
// Question description
if (trim(claro_htmlspecialchars($question['description']))) {
$htmlcontent .= '<tr>' . "\n" . '<td colspan="2" style="font-size: x-small; font-style: italic;">' . change_img_url_for_pdf(claro_parse_user_text($question['description'])) . '</td>' . "\n" . '</tr>' . "\n";
}
// Attachment
if (!empty($question['attachment'])) {
$extensionsList = array('jpg', 'jpeg', 'bmp', 'gif', 'png');
$ext = strtolower(get_file_extension($question['attachment']));
if (in_array($ext, $extensionsList)) {
