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;
}
// We want to show points (0 if no data for that day), for the past 2 weeks
$historyPoints = [];
##Defauts to 100 for beginning of the semester, need to write a function that will actually calculate how many days
##there are until the beginning of the semester.
$email = $context->getUserName();
$email = str_replace("'", "", $email);
// Fetch skill history items for the current student
$historyResults = SkillHistory::find(["email = '{$email}'", "order" => 'time_stored DESC']);
for ($i = 1; $i <= count($historyResults); $i++) {
$formattedDate = date('M j', strtotime("-{$i} days"));
// Array to hold 6 scores
$historyPoints[$formattedDate] = [$formattedDate, 0, 0, 0, 0, 0, 0];
}
// Go through each, and if it's in our historyPoints array, set the score.
// Doing it this way avoids duplicate data points (if historical skill saver ran twice in a day), or empty points, since all are initialized above
foreach ($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)));
if (isset($historyPoints[$formattedDate])) {
$historyPoints[$formattedDate] = [$formattedDate, $day->time, $day->activity, $day->consistency, $day->awareness, $day->deep_learning, $day->persistence];
}
if ($debug) {
echo $day->time . "\n";
echo $day->activity . "\n";
echo $day->consistency . "\n";
echo $day->awareness . "\n";
echo $day->deep_learning . "\n";
echo $day->persistence . "\n";
echo $day->time_stored . "\n";
echo $formattedDate . "\n";
echo $day->email . "\n";
}
}
if ($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");
}
switch ($weeks) {
case "2":
$historyPoints = array_slice($historyPoints, 0, 14);
break;
case "4":
$historyPoints = array_slice($historyPoints, 0, 28);
break;
default:
break;
}
$historyPoints = array_reverse($historyPoints);
$output = fopen("php://output", "w");
// Header row
fputcsv($output, ["date", "Time Management", "Online Activity", "Consistency", "Knowledge Awareness", "Deep Learning", "Persistence"]);
foreach ($historyPoints as $row) {
fputcsv($output, $row);
// here you can change delimiter/enclosure
}
fclose($output);
}
