$unique = str_replace('.', '', microtime(true) . rand(0, 100000));
$dirname = "{$CFG->tempdir}/offlinequiz/import/{$unique}";
check_dir_exists($dirname, true, true);
$warningpathname = $dirname . '/' . $filerecord['filename'];
imagepng($scanner->image, $warningpathname);
$newfile = $scanner->save_image($filerecord, $warningpathname);
$scannedpage->warningfilename = $newfile->get_filename();
$DB->set_field('offlinequiz_scanned_pages', 'warningfilename', $newfile->get_filename(), array('id' => $scannedpage->id));
unlink($warningpathname);
remove_dir($dirname);
}
if (!$unknown) {
$scannedpage = offlinequiz_submit_scanned_page($offlinequiz, $scannedpage, $choicesdata, $startindex, $endindex);
if ($scannedpage->status == 'submitted') {
$result = $DB->get_record('offlinequiz_results', array('id' => $scannedpage->resultid));
if (offlinequiz_check_result_completed($offlinequiz, $group, $result)) {
echo $OUTPUT->notification(get_string('userimported', 'offlinequiz', fullname($user) . " (" . $user->{$offlinequizconfig->ID_field} . ")"), 'notifysuccess');
} else {
echo $OUTPUT->notification(get_string('userpageimported', 'offlinequiz', fullname($user) . " (" . $user->{$offlinequizconfig->ID_field} . ")"), 'notifysuccess');
}
echo '<html>';
echo '<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head>';
if ($overwrite) {
echo "<input type=\"button\" value=\"" . get_string('closewindow') . "\" onClick=\"window.opener.location.replace('" . $CFG->wwwroot . '/mod/offlinequiz/review.php?q=' . $offlinequiz->id . '&resultid=' . $scannedpage->resultid . "'); window.close(); return false;\">";
} else {
echo "<input type=\"button\" value=\"" . get_string('closewindow') . "\" onClick=\"window.opener.location.reload(1); self.close(); return false;\">";
}
echo '<html>';
return;
}
} else {
/**
* Stores the choices made on a scanned page in the table offlinequiz_choices. If there are no insecure markings
* the page is also submitted, i.e. the answers are processed by the question usage by activiy (quba).
*
* @param unknown_type $offlinequiz
* @param unknown_type $scanner
* @param unknown_type $scannedpage
* @param unknown_type $teacherid
* @param unknown_type $coursecontext
*/
function offlinequiz_process_scanned_page($offlinequiz, offlinequiz_page_scanner $scanner, $scannedpage, $teacherid, $questionsperpage, $coursecontext, $submit = false)
{
global $DB;
$offlinequizconfig = get_config('offlinequiz');
if (property_exists($scannedpage, 'resultid') && $scannedpage->resultid) {
$group = $DB->get_record('offlinequiz_groups', array('offlinequizid' => $offlinequiz->id, 'number' => $scannedpage->groupnumber));
$user = $DB->get_record('user', array($offlinequizconfig->ID_field => $scannedpage->userkey));
$result = $DB->get_record('offlinequiz_results', array('id' => $scannedpage->resultid));
$quba = offlinequiz_load_questions_usage_by_activity($result->usageid);
// Retrieve the answers. This initialises the answer hotspots.
$answers = $scanner->get_answers();
if (empty($answers)) {
$scannedpage->status = 'error';
$scannedpage->error = 'notadjusted';
return $scannedpage;
}
$slots = $quba->get_slots();
// We start at the top of the page (e.g. 0, 96, etc).
$startindex = ($scannedpage->pagenumber - 1) * $questionsperpage;
// We end on the bottom of the page or when the questions are gone (e.g., 95, 105).
$endindex = min($scannedpage->pagenumber * $questionsperpage, count($slots));
$answerindex = 0;
$insecuremarkings = false;
$choicesdata = array();
for ($slotindex = $startindex; $slotindex < $endindex; $slotindex++) {
$slot = $slots[$slotindex];
$slotquestion = $quba->get_question($slot);
$attempt = $quba->get_question_attempt($slot);
$order = $slotquestion->get_order($attempt);
// Order of the answers.
// Note: The array length of a row is $maxanswers, so probably bigger than the number of answers in the slot.
$row = $answers[$answerindex++];
$count = 0;
$response = array();
if (!isset($choicesdata[$slot]) || !is_array($choicesdata[$slot])) {
$choicesdata[$slot] = array();
}
// Go through all answers of the slot question.
foreach ($order as $key => $notused) {
// Create the data structure for the offlinequiz_choices table.
$choice = new stdClass();
$choice->scannedpageid = $scannedpage->id;
$choice->slotnumber = $slot;
$choice->choicenumber = $key;
// Check what the scanner recognised.
if ($row[$key] == 'marked') {
$choice->value = 1;
} else {
if ($row[$key] == 'empty') {
$choice->value = 0;
} else {
$choice->value = -1;
$insecuremarkings = true;
}
}
// We really want to save every single cross in the database.
$choice->id = $DB->insert_record('offlinequiz_choices', $choice);
$choicesdata[$slot][$key] = $choice;
}
}
// End for (slot...
if (!$insecuremarkings and $submit) {
$scannedpage = offlinequiz_submit_scanned_page($offlinequiz, $scannedpage, $choicesdata, $startindex, $endindex);
if ($scannedpage->status == 'submitted') {
offlinequiz_check_result_completed($offlinequiz, $group, $result);
}
}
// If insecure markings have been found, set the status appropriately.
if (($scannedpage->status == 'ok' || $scannedpage->status == 'suspended') && $insecuremarkings) {
$scannedpage->status = 'error';
$scannedpage->error = 'insecuremarkings';
$scannedpage->time = time();
$DB->update_record('offlinequiz_scanned_pages', $scannedpage);
}
}
// End if status ok.
return $scannedpage;
}
