public function cacheTestAction()
{
$classHelper = new ClassHelper();
$studentIds = $classHelper->allStudents();
//$studentIds = ["John Logie Baird"];
// Calculate an overall mastery score for these units, as well as an average for concepts over the past 2 weeks
$units = ["1", "2", "3", "4", "recent"];
// Go through each student and calculate unit mastery scores
foreach ($studentIds as $studentId) {
// See if we've already scored mastery scores for this student on the current day (this script just runs multiple times, until a better method to get around 60 second execution time limit is devised)
$lastHistory = StudentMasteryHistory::findFirst(["email = '{$studentId}'", "order" => "time_stored DESC"]);
if (!$lastHistory) {
}
echo "last history is false";
if (gettype($lastHistory)) {
if (date("Y-m-d") == date("Y-m-d", strtotime($lastHistory->time_stored))) {
echo " History already saved today for {$studentId}\n";
continue;
}
}
}
}
public function dailyMasteryAction()
{
$config = $this->getDI()->getShared('config');
if (!isset($_GET["p"])) {
die("No history saver password provided.");
}
if ($_GET["p"] != $config->historySaverPassword) {
die("Invalid history saver password provided.");
}
ini_set('max_execution_time', 300);
set_time_limit(300);
// We want to time this
$startTime = microtime(true);
$debug = false;
$classHelper = new ClassHelper();
$masteryHelper = new MasteryHelper();
$studentIds = $classHelper->allStudents();
//$studentIds = ["John Logie Baird"];
// Calculate an overall mastery score for these units, as well as an average for concepts over the past 2 weeks
$units = ["1", "2", "3", "4", "recent"];
// Go through each student and calculate unit mastery scores
foreach ($studentIds as $studentId) {
// See if we've already scored mastery scores for this student on the current day (this script just runs multiple times, until a better method to get around 60 second execution time limit is devised)
$studentId = str_replace("'", "", $studentId);
$lastHistory = StudentMasteryHistory::findFirst(["email = '{$studentId}'", "order" => "time_stored DESC"]);
if (date("Y-m-d") == date("Y-m-d", strtotime($lastHistory->time_stored))) {
echo " History already saved today for {$studentId}\n";
continue;
}
$scores = [];
foreach ($units as $unit) {
// We fetch recent concepts differently from the rest of the units
if ($unit == "recent") {
$concepts = MappingHelper::conceptsWithin2Weeks();
} else {
$concepts = MappingHelper::conceptsInUnit($unit);
}
$unitScore = 0;
foreach ($concepts as $c) {
$unitScore += $masteryHelper::calculateConceptMasteryScore($studentId, $c, $debug);
}
$unitScore = $unitScore / count($concepts);
$scores[$unit] = $unitScore;
}
if ($debug) {
echo "Scores for student {$studentId} \n";
print_r($scores);
}
$history = new StudentMasteryHistory();
$history->email = $studentId;
$history->unit1 = $scores["1"];
$history->unit2 = $scores["2"];
$history->unit3 = $scores["3"];
$history->unit4 = $scores["4"];
$history->recent_average = $scores["recent"];
if ($history->create() == false) {
echo "*** Error saving mastery history for {$studentId}\n";
} else {
echo " Successfully saved history for {$studentId}\n";
}
}
// Print total time taken
$endTime = microtime(true);
echo "Execution time: " . ($endTime - $startTime) . " seconds\n";
}
public function studentsAction($start, $finish)
{
$this->view->disable();
// Get our context (this takes care of starting the session, too)
$context = $this->getDI()->getShared('ltiContext');
if (!$context->valid) {
echo '[{"error":"Invalid lti context"}]';
return;
}
$timeArray[] = 280;
$classHelper = new ClassHelper();
$masteryHelper = new MasteryHelper();
$statementHelper = new StatementHelper();
$recent_concepts = MappingHelper::conceptsWithin2Weeks();
$students = $classHelper->allStudents();
// $students = ["John Logie Baird","me"];
$studentInfo = [];
$maxCount = 0;
//count($students)
for ($i = $start; $i < $finish; $i++) {
$startTime = microtime(true);
$studentAverages = StudentMasteryHistory::findFirst(["conditions" => "email = ?1", "bind" => array(1 => $students[$i]), "order" => 'time_stored DESC']);
// For second parameter of what to query, see http://php.net/manual/en/mongocollection.find.php
$visStatements = $statementHelper->getStatements("visualization", ['statement.actor.name' => $students[$i]], ['statement.object.id' => true]);
$hints = $statementHelper->getStatements("openassessments", ['statement.actor.name' => $students[$i], 'statement.verb.id' => 'http://adlnet.gov/expapi/verbs/showed-hint'], ['statement.object.id' => true]);
$showAnswer = $statementHelper->getStatements("openassessments", ['statement.actor.name' => $students[$i], 'statement.verb.id' => 'http://adlnet.gov/expapi/verbs/showed-answer'], ['statement.object.id' => true]);
$questionsAnswered = $statementHelper->getStatements("openassessments", ['statement.actor.name' => $students[$i], 'statement.verb.id' => 'http://adlnet.gov/expapi/verbs/answered'], ['statement.object.id' => true, 'statement.context.extensions' => true]);
$hintsShowed = $hints["cursor"]->count();
$answersShowed = $showAnswer["cursor"]->count();
$high = 0;
$medium = 0;
$low = 0;
$attempts = $questionsAnswered["cursor"]->count();
$correct = 0;
foreach ($questionsAnswered["cursor"] as $confidenceCheck) {
$confidenceCheck = StatementHelper::replaceHtmlEntity($confidenceCheck, true);
if ($confidenceCheck['statement']['context']['extensions']['http://byuopenanalytics.byu.edu/expapi/extensions/correct'] == true) {
$correct++;
}
if (array_key_exists('http://byuopenanalytics.byu.edu/expapi/extensions/confidence_level', $confidenceCheck['statement']['context']['extensions'])) {
if ($confidenceCheck['statement']['context']['extensions']['http://byuopenanalytics.byu.edu/expapi/extensions/confidence_level'] == "high") {
$high++;
}
if ($confidenceCheck['statement']['context']['extensions']['http://byuopenanalytics.byu.edu/expapi/extensions/confidence_level'] == "medium") {
$medium++;
}
if ($confidenceCheck['statement']['context']['extensions']['http://byuopenanalytics.byu.edu/expapi/extensions/confidence_level'] == "low") {
$low++;
}
}
}
$commonConfidence = max($high, $medium, $low);
if ($commonConfidence == $high) {
$medianConfidence = "High";
} else {
if ($commonConfidence == $medium) {
$medianConfidence = "Medium";
} else {
$medianConfidence = "Low";
}
}
$count = $visStatements["cursor"]->count();
$escapedString = str_replace("'", "", $students[$i]);
// echo $escapedString;
$lastHistory = VideoHistory::findFirst(["student = '{$escapedString}'", "order" => "time_stored DESC"]);
$vidPercent = $lastHistory->vidpercentage;
if ($count > $maxCount && $students[$i] != 'John Logie Baird') {
$maxCount = $count;
}
if (!is_object($studentAverages)) {
$newStudent = ["name" => $students[$i], "average" => 0, "count" => $count, "vPercentage" => $vidPercent, "correct" => $correct, "attempts" => $attempts, "hintsShowed" => $hintsShowed, "answersShowed" => $answersShowed, "confidence" => $medianConfidence];
} else {
$newStudent = ["name" => $studentAverages->email, "average" => $studentAverages->recent_average, "count" => $count, "vPercentage" => $vidPercent, "correct" => $correct, "attempts" => $attempts, "hintsShowed" => $hintsShowed, "answersShowed" => $answersShowed, "confidence" => $medianConfidence];
}
if ($students[$i] != 'John Logie Baird' && $students[$i] != 'Bob Bodily') {
$studentInfo[] = $newStudent;
}
$endTime = microtime(true);
$timeArray[$i] = $endTime - $startTime;
//echo "Execution time: " . ($endTime - $startTime) ." seconds\n";
}
$avg = 0;
foreach ($timeArray as $time) {
$avg += $time;
}
$avg = $avg / 280;
// echo "Average Time: ".$avg." seconds\n";
//Sorts the students by their recent mastery average, from highest to lowest.
usort($studentInfo, function ($student1, $student2) {
return $student1["average"] <= $student2["average"];
});
$firstRow = ["max" => $maxCount];
array_unshift($studentInfo, $firstRow);
echo json_encode($studentInfo);
}
public function time_graphAction($weeks = "all", $debug = false)
{
$this->view->disable();
// Get our context (this takes care of starting the session, too)
$context = $this->getDI()->getShared('ltiContext');
if (!$context->valid) {
echo '[{"error":"Invalid lti context"}]';
return;
}
$email = $context->getUserName();
// Fetch skill history items for the current student
$historyResults = StudentMasteryHistory::find(["email = '{$email}'", "order" => 'time_stored DESC']);
$historyPoints = [];
foreach ($historyResults as $day) {
// Scores are saved at 3am, so they actually correspond to the previous day
$formattedDate = date('M j', strtotime('-1 day', strtotime($day->time_stored)));
$historyPoints[] = [$formattedDate, round($day->unit1 * 100) / 100, round($day->unit2 * 100) / 100, round($day->unit3 * 100) / 100, round($day->unit4 * 100) / 100];
//$historyPoints []= [$formattedDate, rand(0,100) / 10, rand(0,100) / 10];
}
// In case it gets saved multiple times, eliminate duplicates
$historyPoints = array_unique($historyPoints, SORT_REGULAR);
// Get the amount of data requested:
switch ($weeks) {
case "2":
$historyPoints = array_slice($historyPoints, 0, 14);
break;
case "4":
$historyPoints = array_slice($historyPoints, 0, 28);
break;
default:
break;
}
// echo json_encode($historyPoints);
// Put it in correct order
$historyPoints = array_reverse($historyPoints);
//print_r($historyPoints);
if ($debug) {
print_r($historyPoints);
}
// Output data as csv so that we only have to send header information once
if (!$debug) {
header("Content-Type: text/csv");
}
$output = fopen("php://output", "w");
// Header row
fputcsv($output, ["date", "Unit 1", "Unit 2", "Unit 3", "Unit 4"]);
foreach ($historyPoints as $row) {
fputcsv($output, $row);
// here you can change delimiter/enclosure
}
fclose($output);
}
