/**
* Given an array built from edX csv returns a course entity
* @param array $c
*/
private function getCourseEntity($c = array())
{
$defaultStream = $this->dbHelper->getStreamBySlug('cs');
$langMap = $this->dbHelper->getLanguageMap();
$defaultLanguage = $langMap['English'];
$course = new Course();
$course->setShortName($this->getShortName($c));
$course->setInitiative($this->initiative);
$course->setName($c['course-code'] . ': ' . $c['title']);
$course->setDescription($c['description']);
$course->setLongDescription(nl2br($c['description']));
$course->setLanguage($defaultLanguage);
$course->setStream($defaultStream);
// Default to Computer Science
$course->setVideoIntro($c['course-video-youtube']);
$course->setUrl($c['link']);
$course->setCertificate(false);
$course->setVerifiedCertificate($c['course-verified']);
// Calculate length
$length = null;
if (!empty($c['course-end'])) {
$start = new \DateTime($c['course-start']);
$end = new \DateTime($c['course-end']);
$length = ceil($start->diff($end)->days / 7);
}
$course->setLength($length);
return $course;
}
private function getOnDemandCourse($data = array())
{
$dbLanguageMap = $this->dbHelper->getLanguageMap();
$course = new Course();
$course->setShortName(substr('coursera_' . $data['elements'][0]['slug'], 0, 49));
$course->setInitiative($this->initiative);
$course->setName($data['elements'][0]['name']);
$course->setDescription($data['elements'][0]['description']);
$course->setLongDescription(nl2br($data['elements'][0]['description']));
$course->setStream($this->dbHelper->getStreamBySlug('cs'));
// Default to Computer Science
$course->setUrl('https://www.coursera.org/learn/' . $data['elements'][0]['slug']);
$lang = self::$languageMap[$data['elements']['0']['primaryLanguageCodes'][0]];
if (isset($dbLanguageMap[$lang])) {
$course->setLanguage($dbLanguageMap[$lang]);
} else {
$this->out("Language not found " . $data['elements']['0']['primaryLanguageCodes'][0]);
}
$course->setCertificate(false);
$course->setVerifiedCertificate($data['elements'][0]['isVerificationEnabled']);
// Add the university
foreach ($data['linked']['partners.v1'] as $university) {
$ins = new Institution();
$ins->setName($university['name']);
$ins->setIsUniversity(true);
$ins->setSlug($university['shortName']);
$course->addInstitution($this->dbHelper->createInstitutionIfNotExists($ins));
}
foreach ($data['linked']['instructors.v1'] as $courseraInstructor) {
if (!empty($courseraInstructor['fullName'])) {
$insName = $courseraInstructor['fullName'];
} else {
$insName = $courseraInstructor['firstName'] . ' ' . $courseraInstructor['lastName'];
}
$course->addInstructor($this->dbHelper->createInstructorIfNotExists($insName));
}
// Get Course Details like Syllabus and length
$courseDetails = json_decode(file_get_contents(sprintf(self::ONDEMAND_OPENCOURSE_API, $data['elements'][0]['slug'])), true);
if (!empty($courseDetails)) {
$syllabus = '';
foreach ($courseDetails['courseMaterial']['elements'] as $item) {
$syllabus .= "<b>{$item['name']}</b><br/>{$item['description']}<br/><br/>";
}
$course->setSyllabus($syllabus);
}
// Calculate the length of the course
$schedule = json_decode(file_get_contents(sprintf(self::ONDEMAND_COURSE_SCHEDULE, $data['elements'][0]['id'])), true);
if (!empty($schedule)) {
$length = 0;
foreach ($schedule['elements'][0]['defaultSchedule']['periods'] as $period) {
$length += $period['numberOfWeeks'];
}
if ($length > 0) {
$course->setLength($length);
}
}
return $course;
}
private function getOnDemandCourse($data = array())
{
$dbLanguageMap = $this->dbHelper->getLanguageMap();
$course = new Course();
$course->setShortName(substr('coursera_' . $data['elements'][0]['slug'], 0, 49));
$course->setInitiative($this->initiative);
$course->setName($data['elements'][0]['name']);
$course->setDescription($data['elements'][0]['description']);
$course->setLongDescription(nl2br($data['elements'][0]['description']));
$course->setStream($this->dbHelper->getStreamBySlug('cs'));
// Default to Computer Science
$course->setUrl('https://www.coursera.org/learn/' . $data['elements'][0]['slug']);
$lang = self::$languageMap[$data['elements']['0']['primaryLanguageCodes'][0]];
if (isset($dbLanguageMap[$lang])) {
$course->setLanguage($dbLanguageMap[$lang]);
} else {
$this->out("Language not found " . $data['elements']['0']['primaryLanguageCodes'][0]);
}
$course->setCertificate(false);
$course->setVerifiedCertificate($data['elements'][0]['isVerificationEnabled']);
// Add the university
foreach ($data['linked']['partners.v1'] as $university) {
$ins = new Institution();
$ins->setName($university['name']);
$ins->setIsUniversity(true);
$ins->setSlug($university['shortName']);
$course->addInstitution($this->dbHelper->createInstitutionIfNotExists($ins));
}
foreach ($data['linked']['instructors.v1'] as $courseraInstructor) {
if (!empty($courseraInstructor['fullName'])) {
$insName = $courseraInstructor['fullName'];
} else {
$insName = $courseraInstructor['firstName'] . ' ' . $courseraInstructor['lastName'];
}
$course->addInstructor($this->dbHelper->createInstructorIfNotExists($insName));
}
return $course;
}
private function getCourseEntity($udacityCourse = array())
{
$defaultStream = $this->dbHelper->getStreamBySlug('cs');
$langMap = $this->dbHelper->getLanguageMap();
$defaultLanguage = $langMap['English'];
$course = new Course();
$course->setShortName(substr('udacity_' . $udacityCourse['slug'], 0, 50));
$course->setInitiative($this->initiative);
$course->setName($udacityCourse['title']);
$course->setDescription($udacityCourse['short_summary']);
$course->setLanguage($defaultLanguage);
$course->setStream($defaultStream);
// Default to Computer Science
$course->setCertificate(false);
$course->setUrl($udacityCourse['homepage']);
$course->setSyllabus(nl2br($udacityCourse['syllabus']));
$course->setWorkloadMin(6);
$course->setWorkloadMax(6);
// Calculate length
$length = null;
$expectedDuration = $udacityCourse['expected_duration'];
if ($udacityCourse['expected_duration_unit'] == 'months') {
$length = $expectedDuration * 4;
} elseif ($udacityCourse['expected_duration_unit'] == 'weeks') {
$length = $expectedDuration;
}
$course->setLength($length);
// Calculate Description
$course->setLongDescription(nl2br($udacityCourse['summary'] . '<br/><br/><b>Why Take This Course?</b><br/>' . $udacityCourse['expected_learning']));
// Intro Video
if (!empty($udacityCourse['teaser_video']['youtube_url'])) {
$course->setVideoIntro($udacityCourse['teaser_video']['youtube_url']);
}
return $course;
}
private function getCourseEntity($c = array())
{
$defaultStream = $this->dbHelper->getStreamBySlug('cs');
$langMap = $this->dbHelper->getLanguageMap();
$defaultLanguage = $langMap['English'];
$course = new Course();
$course->setShortName($c['uuid']);
$course->setInitiative($this->initiative);
$course->setName($c['name']);
$course->setDescription($c['introduction']);
$course->setLongDescription($c['description']);
$course->setLanguage($defaultLanguage);
$course->setStream($defaultStream);
// Default to Computer Science
$course->setUrl($c['url']);
$course->setCertificate($c['has_certificates']);
$course->setWorkloadMin($c['hours_per_week']);
$course->setWorkloadMax($c['hours_per_week']);
// Get the length
if ($c['runs']) {
$course->setLength($c['runs'][0]['duration_in_weeks']);
}
return $course;
}
