function process()
{
global $DB, $CFG, $USER, $QUIZ_CACHE;
$cm = get_coursemodule_from_id('quiz', $this->id);
$context = context_module::instance($cm->id);
$quiz = $DB->get_record('quiz', array('id' => $cm->instance), '*', MUST_EXIST);
$quizobj = quiz::create($cm->instance, $USER->id);
$mQH = new QuizHelper();
$mQH->init($this->server_connection);
try {
$quizobj->preload_questions();
$quizobj->load_questions();
$qs = $quizobj->get_questions();
$md5postfix = "";
foreach ($this->configArray as $key => $value) {
$md5postfix .= $key[0] . (string) $value;
}
// generate the md5 of the quiz
$this->md5 = md5(serialize($qs)) . $this->id . "c" . $md5postfix;
// find if this quiz already exists
$resp = $mQH->exec('quizprops/digest/' . $this->md5, array(), 'get');
if (!isset($resp->quizzes)) {
echo get_string('error_connection', 'block_oppia_mobile_export');
die;
}
$filename = extractImageFile($quiz->intro, 'mod_quiz', 'intro', '0', $context->id, $this->courseroot, $cm->id);
if ($filename) {
$this->quiz_image = "/images/" . resizeImage($this->courseroot . "/" . $filename, $this->courseroot . "/images/" . $cm->id, $CFG->block_oppia_mobile_export_thumb_width, $CFG->block_oppia_mobile_export_thumb_height);
//delete original image
unlink($this->courseroot . "/" . $filename) or die(get_string('error_file_delete', 'block_oppia_mobile_export'));
}
// Don't export the full quiz if it already exists on the server
// instead just add the course version
if (count($resp->quizzes) > 0) {
$quiz_id = $resp->quizzes[0]->quiz_id;
$quiz = $mQH->exec('quiz/' . $quiz_id, array(), 'get');
$this->content = json_encode($quiz);
$post = array('quiz_id' => $quiz_id, 'name' => "courseversion", 'value' => $this->courseversion);
$resp = $mQH->exec('quizprops', $post);
$this->exportQuestionImages();
$this->exportQuestionMedia();
return;
}
$props = array();
array_push($props, array('name' => "digest", 'value' => $this->md5));
array_push($props, array('name' => "courseversion", 'value' => $this->courseversion));
foreach ($this->configArray as $k => $v) {
if ($k != 'randomselect' || $v != 0) {
array_push($props, array('name' => $k, 'value' => $v));
}
}
$nameJSON = extractLangs($cm->name, true);
$descJSON = extractLangs($this->summary, true);
//create the quiz
$post = array('title' => $nameJSON, 'description' => $descJSON, 'questions' => array(), 'props' => $props);
$resp = $mQH->exec('quiz', $post);
$quiz_uri = $resp->resource_uri;
$quiz_id = $resp->id;
$i = 1;
foreach ($qs as $q) {
// skip any essay questions
if ($q->qtype == 'essay') {
$q->qtype = 'essay';
// echo get_string('export_quiz_skip_essay','block_oppia_mobile_export')."<br/>";
// continue;
}
// skip any random questions
if ($q->qtype == 'random') {
echo get_string('export_quiz_skip_random', 'block_oppia_mobile_export') . "<br/>";
continue;
}
//check to see if a multichoice is actually a multiselect
if ($q->qtype == 'multichoice') {
$counter = 0;
foreach ($q->options->answers as $r) {
if ($r->fraction > 0) {
$counter++;
}
}
if ($counter > 1) {
$q->qtype = 'multiselect';
}
}
if ($q->qtype == 'truefalse') {
$q->qtype = 'multichoice';
}
// add max score property
$props = array();
$props[0] = array('name' => "maxscore", 'value' => $q->maxmark);
//add feedback for matching questions
if ($q->qtype == 'match') {
$q->qtype = 'matching';
$prop_i = 1;
if ($q->options->correctfeedback != "") {
$feedbackJSON = extractLangs($q->options->correctfeedback, true);
$props[$prop_i] = array('name' => "correctfeedback", 'value' => $feedbackJSON);
$prop_i++;
}
if ($q->options->partiallycorrectfeedback != "") {
$feedbackJSON = extractLangs($q->options->partiallycorrectfeedback, true);
$props[$prop_i] = array('name' => "partiallycorrectfeedback", 'value' => $feedbackJSON);
$prop_i++;
}
if ($q->options->incorrectfeedback != "") {
$feedbackJSON = extractLangs($q->options->incorrectfeedback, true);
$props[$prop_i] = array('name' => "incorrectfeedback", 'value' => $feedbackJSON);
$prop_i++;
}
}
// find if the question text has any images in it
$question_image = extractImageFile($q->questiontext, 'question', 'questiontext', $q->id, $q->contextid, $this->courseroot, $cm->id);
if ($question_image) {
array_push($props, array('name' => "image", 'value' => $question_image));
}
// find if any videos embedded in question text
$q->questiontext = $this->extractMedia($q->id, $q->questiontext);
if (array_key_exists($q->id, $this->quiz_media)) {
foreach ($this->quiz_media[$q->id] as $media) {
array_push($props, array('name' => "media", 'value' => $media->filename));
}
}
$questionJSON = extractLangs($q->questiontext, true);
// create question
$post = array('title' => $questionJSON, 'type' => $q->qtype, 'responses' => array(), 'props' => $props);
$resp = $mQH->exec('question', $post);
$question_uri = $resp->resource_uri;
$j = 1;
// if matching question then concat the options with |
if (isset($q->options->subquestions)) {
// Find out how many subquestions
$subqs = 0;
foreach ($q->options->subquestions as $sq) {
if (trim($sq->questiontext) != "") {
$subqs++;
}
}
foreach ($q->options->subquestions as $sq) {
$titleJSON = extractLangs($sq->questiontext . $this->MATCHING_SEPERATOR . $sq->answertext, true);
// add response
$props = array();
$post = array('question' => $question_uri, 'order' => $j, 'title' => $titleJSON, 'score' => $q->maxmark / $subqs, 'props' => $props);
$resp = $mQH->exec('response', $post);
$response_uri = $resp->resource_uri;
$j++;
}
}
// for multichoice/multiselect/shortanswer/numerical questions
if (isset($q->options->answers)) {
foreach ($q->options->answers as $r) {
$props = array();
if (strip_tags($r->feedback) != "") {
$feedbackJSON = extractLangs($r->feedback, true);
$props[0] = array('name' => 'feedback', 'value' => $feedbackJSON);
}
// if numerical also add a tolerance
if ($q->qtype == 'numerical') {
$props[1] = array('name' => 'tolerance', 'value' => $r->tolerance);
}
$responseJSON = extractLangs($r->answer, true);
// add response
$post = array('question' => $question_uri, 'order' => $j, 'title' => $responseJSON, 'score' => $r->fraction * $q->maxmark, 'props' => $props);
$resp = $mQH->exec('response', $post);
$j++;
}
}
// add question to quiz
$post = array('quiz' => $quiz_uri, 'question' => $question_uri, 'order' => $i);
$resp = $mQH->exec('quizquestion', $post);
$i++;
}
// get the final quiz object
$quiz = $mQH->exec('quiz/' . $quiz_id, array(), 'get');
$this->content = json_encode($quiz);
} catch (moodle_exception $me) {
echo get_string('export_quiz_skip', 'block_oppia_mobile_export') . "<br/>";
$this->is_valid = false;
return;
}
}
function process()
{
global $DB, $CFG, $USER;
$cm = get_coursemodule_from_id('feedback', $this->id);
$context = context_module::instance($cm->id);
$feedback = $DB->get_record('feedback', array('id' => $cm->instance), '*', MUST_EXIST);
$select = 'feedback = ?';
$params = array($feedback->id);
$feedbackitems = $DB->get_records_select('feedback_item', $select, $params, 'position');
$mQH = new QuizHelper();
$mQH->init($this->server_connection);
$this->md5 = md5(serialize($feedbackitems)) . $this->id;
// find if this quiz already exists
$resp = $mQH->exec('quizprops/digest/' . $this->md5, array(), 'get');
if (!isset($resp->quizzes)) {
echo get_string('error_connection', 'block_oppia_mobile_export');
die;
}
$filename = extractImageFile($feedback->intro, 'mod_feedback', 'intro', '0', $context->id, $this->courseroot, $cm->id);
if ($filename) {
$this->feedback_image = "/images/" . resizeImage($this->courseroot . "/" . $filename, $this->courseroot . "/images/" . $cm->id, $CFG->block_oppia_mobile_export_thumb_width, $CFG->block_oppia_mobile_export_thumb_height);
//delete original image
unlink($this->courseroot . "/" . $filename) or die(get_string('error_file_delete', 'block_oppia_mobile_export'));
}
if (count($resp->quizzes) > 0) {
$quiz_id = $resp->quizzes[0]->quiz_id;
$quiz = $mQH->exec('quiz/' . $quiz_id, array(), 'get');
$this->content = json_encode($quiz);
return;
}
$props = array();
$props[0] = array('name' => "digest", 'value' => $this->md5);
$props[1] = array('name' => "courseversion", 'value' => $this->courseversion);
$nameJSON = extractLangs($cm->name, true);
$descJSON = extractLangs($this->summary, true);
//create the quiz
$post = array('title' => $nameJSON, 'description' => $descJSON, 'questions' => array(), 'props' => $props);
$resp = $mQH->exec('quiz', $post);
$quiz_uri = $resp->resource_uri;
$quiz_id = $resp->id;
$i = 1;
foreach ($feedbackitems as $fi) {
if (!in_array($fi->typ, $this->supported_types)) {
continue;
}
if ($fi->required) {
$value = "true";
} else {
$value = "false";
}
$props = array();
$props[0] = array('name' => "required", 'value' => $value);
$qtitle = extractLangs($fi->name, true);
// create the question
if (strpos($fi->presentation, 'r') === 0 && ($fi->typ == "multichoice" || $fi->typ == "multichoicerated")) {
$post = array('title' => $qtitle, 'type' => "multichoice", 'responses' => array(), 'props' => $props);
$resp = $mQH->exec('question', $post);
$question_uri = $resp->resource_uri;
}
if (strpos($fi->presentation, 'c') === 0 && $fi->typ == "multichoice") {
$post = array('title' => $qtitle, 'type' => "multiselect", 'responses' => array(), 'props' => $props);
$resp = $mQH->exec('question', $post);
$question_uri = $resp->resource_uri;
}
if ($fi->typ == "textarea") {
$post = array('title' => $qtitle, 'type' => "essay", 'responses' => array(), 'props' => $props);
$resp = $mQH->exec('question', $post);
$question_uri = $resp->resource_uri;
}
if ($fi->typ == "numeric") {
$post = array('title' => $qtitle, 'type' => "numerical", 'responses' => array(), 'props' => $props);
$resp = $mQH->exec('question', $post);
$question_uri = $resp->resource_uri;
}
if ($fi->typ == "textfield") {
$post = array('title' => $qtitle, 'type' => "shortanswer", 'responses' => array(), 'props' => $props);
$resp = $mQH->exec('question', $post);
$question_uri = $resp->resource_uri;
}
// add the response options
if ($fi->typ == "multichoice") {
$j = 1;
$presentation = preg_replace("(r[>]+)", '', $fi->presentation);
$presentation = preg_replace("(c[>]+)", '', $presentation);
$response_options = explode("|", $presentation);
foreach ($response_options as $ro) {
$responseopt = extractLangs($ro, true);
$post = array('question' => $question_uri, 'order' => $j, 'title' => $responseopt, 'score' => 0, 'props' => array());
$resp = $mQH->exec('response', $post);
$j++;
}
}
if ($fi->typ == "multichoicerated") {
$j = 1;
$presentation = preg_replace("(r[>>]+)", '', $fi->presentation);
$response_options = explode("|", $presentation);
foreach ($response_options as $ro) {
$new_ro = preg_replace("([0-9]+[#]+)", '', $ro);
$responseopt = extractLangs($new_ro, true);
$post = array('question' => $question_uri, 'order' => $j, 'title' => $responseopt, 'score' => 0, 'props' => array());
$resp = $mQH->exec('response', $post);
$j++;
}
}
// add question to quiz
$post = array('quiz' => $quiz_uri, 'question' => $question_uri, 'order' => $i);
$resp = $mQH->exec('quizquestion', $post);
$i++;
}
// get the final quiz object
$feedback = $mQH->exec('quiz/' . $quiz_id, array(), 'get');
$this->content = json_encode($feedback);
}
