/**
* Creates a course if it does not exist
* @param $name Name of the course
* @param Initiative $initiative
* @param Institution $ins
* @return Course
*/
public function createCourseIfNotExists($name, Initiative $initiative, Institution $ins = null, Stream $stream)
{
// Check if course exists
$em = $this->scraper->getManager();
$courseRepository = $em->getRepository('ClassCentralSiteBundle:Course');
$course = $courseRepository->findOneBy(array('name' => $name, 'initiative' => $initiative->getId()));
// Course exists
if ($course) {
return $course;
}
$course = new Course();
$course->setName($name);
$course->setInitiative($initiative);
if ($ins) {
$course->addInstitution($ins);
}
$course->setStream($stream);
// Check if course is to be created
if ($this->scraper->doModify() && $this->scraper->doCreate()) {
$em->persist($course);
$em->flush();
$this->scraper->out("COURSE {$name} created for initiative " . $initiative->getName());
}
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;
}
