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 videoHistoryAction()
{
$config = $this->getDI()->getShared('config');
if (!isset($_GET["p"])) {
die("No history saver password provided.");
}
if ($_GET["p"] != $config->historySaverPassword) {
die("Invalid history saver password provided. Should be {$config->historySaverPassword}");
}
// We want to time this
$startTime = microtime(true);
$raw = false;
$debug = false;
$classHelper = new ClassHelper();
$masteryHelper = new MasteryHelper();
$studentIds = $classHelper->allStudents();
$recent_concepts = MappingHelper::conceptsWithin2Weeks();
foreach ($studentIds as $student) {
$escStudent = str_replace("'", "", $student);
$lastHistory = VideoHistory::findFirst(["student = '{$escStudent}'", "order" => "time_stored DESC"]);
if (date("Y-m-d") == date("Y-m-d", strtotime($lastHistory->time_stored))) {
echo " History already saved today for student: {$student}\n";
continue;
}
$videoPercentage = $masteryHelper->calculateUniqueVideoPercentageForConcepts($student, $recent_concepts);
$videoHistory = new VideoHistory();
$videoHistory->student = $escStudent;
$videoHistory->vidpercentage = $videoPercentage;
if ($videoHistory->create() == false) {
echo "*** Error saving concept history for {$concept}\n";
} else {
}
}
// Print total time taken
$endTime = microtime(true);
echo "Execution time: " . ($endTime - $startTime) . " seconds\n";
}
