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<?php |
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/* For licensing terms, see /license.txt */ |
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use Chamilo\PluginBundle\Entity\ImsLti\LineItem; |
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use Doctrine\ORM\OptimisticLockException; |
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use Doctrine\ORM\ORMException; |
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use Doctrine\ORM\TransactionRequiredException; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\HttpFoundation\Response; |
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use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException; |
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use Symfony\Component\HttpKernel\Exception\BadRequestHttpException; |
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use Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException; |
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use Symfony\Component\HttpKernel\Exception\NotFoundHttpException; |
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use Symfony\Component\HttpKernel\Exception\UnsupportedMediaTypeHttpException; |
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/** |
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* Class LtiLineItemResource. |
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*/ |
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class LtiLineItemResource extends LtiAdvantageServiceResource |
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{ |
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const URL_TEMPLATE = '/context_id/lineitems/line_item_id'; |
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/** |
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* @var LineItem|null |
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*/ |
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private $lineItem; |
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/** |
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* LtiLineItemResource constructor. |
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* |
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* @param int $toolId |
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* @param int $courseId |
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* @param int $lineItemId |
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* |
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* @throws ORMException |
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* @throws OptimisticLockException |
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* @throws TransactionRequiredException |
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*/ |
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public function __construct($toolId, $courseId, $lineItemId) |
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{ |
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parent::__construct($toolId, $courseId); |
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$this->lineItem = Database::getManager()->find('ChamiloPluginBundle:ImsLti\LineItem', (int) $lineItemId); |
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} |
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/** |
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* @throws OptimisticLockException |
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*/ |
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public function process() |
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{ |
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switch ($this->request->getMethod()) { |
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case Request::METHOD_GET: |
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$this->validateToken( |
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[LtiAssignmentGradesService::SCOPE_LINE_ITEM] |
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); |
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$this->processGet(); |
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break; |
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case Request::METHOD_PUT: |
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if (LtiAssignmentGradesService::AGS_FULL !== $this->tool->getAdvantageServices()['ags']) { |
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throw new MethodNotAllowedHttpException([Request::METHOD_GET]); |
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} |
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$this->validateToken( |
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[LtiAssignmentGradesService::SCOPE_LINE_ITEM] |
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); |
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$this->processPut(); |
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break; |
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case Request::METHOD_DELETE: |
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if (LtiAssignmentGradesService::AGS_FULL !== $this->tool->getAdvantageServices()['ags']) { |
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throw new MethodNotAllowedHttpException([Request::METHOD_GET]); |
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} |
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$this->validateToken( |
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[LtiAssignmentGradesService::SCOPE_LINE_ITEM] |
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); |
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$this->processDelete(); |
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break; |
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default: |
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throw new MethodNotAllowedHttpException([Request::METHOD_GET, Request::METHOD_PUT, Request::METHOD_DELETE]); |
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} |
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} |
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/** |
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* Validate the values for the resource URL. |
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*/ |
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public function validate() |
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{ |
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if (!$this->course) { |
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throw new BadRequestHttpException('Course not found.'); |
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} |
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if (!$this->tool) { |
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throw new BadRequestHttpException('Tool not found.'); |
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} |
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if ($this->tool->getCourse()->getId() !== $this->course->getId()) { |
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throw new AccessDeniedHttpException('Tool not found in course.'); |
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} |
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if ($this->request->server->get('HTTP_ACCEPT') !== LtiAssignmentGradesService::TYPE_LINE_ITEM) { |
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throw new UnsupportedMediaTypeHttpException('Unsupported media type.'); |
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} |
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$parentTool = $this->tool->getParent(); |
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if ($parentTool) { |
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$advServices = $parentTool->getAdvantageServices(); |
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if (LtiAssignmentGradesService::AGS_NONE === $advServices['ags']) { |
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throw new AccessDeniedHttpException('Assigment and grade service is not enabled for this tool.'); |
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} |
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} |
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if (!$this->lineItem) { |
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throw new NotFoundHttpException('Line item not found'); |
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} |
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if ($this->lineItem->getTool()->getId() !== $this->tool->getId()) { |
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throw new AccessDeniedHttpException('Line item not found for the tool.'); |
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} |
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} |
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private function processGet() |
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{ |
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$data = $this->lineItem->toArray(); |
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$data['id'] = LtiAssignmentGradesService::getLineItemUrl( |
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$this->course->getId(), |
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$this->lineItem->getId(), |
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$this->tool->getId() |
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); |
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$this->response->headers->set('Content-Type', LtiAssignmentGradesService::TYPE_LINE_ITEM); |
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$this->response->setData($data); |
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} |
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/** |
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* @throws OptimisticLockException |
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*/ |
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private function processPut() |
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{ |
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$data = json_decode($this->request->getContent(), true); |
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if (empty($data) || empty($data['label']) || empty($data['scoreMaximum'])) { |
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throw new BadRequestHttpException('Missing data to update line item.'); |
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} |
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$this->updateLineItem($data); |
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$data['id'] = LtiAssignmentGradesService::getLineItemUrl( |
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$this->course->getId(), |
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$this->lineItem->getId(), |
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$this->tool->getId() |
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); |
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$data['scoreMaximum'] = $this->lineItem->getEvaluation()->getMax(); |
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$this->response->headers->set('Content-Type', LtiAssignmentGradesService::TYPE_LINE_ITEM); |
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$this->response->setEncodingOptions(JSON_UNESCAPED_SLASHES); |
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$this->response->setData($data); |
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} |
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/** |
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* @throws OptimisticLockException |
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*/ |
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private function updateLineItem(array $data) |
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{ |
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$lineItemEvaluation = $this->lineItem->getEvaluation(); |
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$evaluations = Evaluation::load($lineItemEvaluation->getId()); |
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/** @var Evaluation $evaluation */ |
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$evaluation = $evaluations[0]; |
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$lineItemEvaluation->setName($data['label']); |
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if (isset($data['resourceId'])) { |
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$this->lineItem->setResourceId($data['resourceId']); |
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} |
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if (isset($data['tag'])) { |
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$this->lineItem->setTag($data['tag']); |
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} |
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if (!empty($data['startDateTime'])) { |
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$startDate = new DateTime($data['startDateTime']); |
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$this->lineItem->setStartDate($startDate); |
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} |
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if (!empty($data['endDateTime'])) { |
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$endDate = new DateTime($data['endDateTime']); |
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$this->lineItem->setEndDate($endDate); |
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} |
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if (!$evaluation->has_results()) { |
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$lineItemEvaluation->setMax($data['scoreMaximum']); |
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} |
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$em = Database::getManager(); |
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$em->persist($this->lineItem); |
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$em->persist($lineItemEvaluation); |
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$em->flush(); |
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} |
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/** |
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* @throws OptimisticLockException |
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*/ |
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private function processDelete() |
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{ |
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$this->deleteLineItem(); |
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$this->response->setStatusCode(Response::HTTP_NO_CONTENT); |
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} |
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/** |
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* @throws OptimisticLockException |
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*/ |
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private function deleteLineItem() |
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{ |
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$lineItemEvaluation = $this->lineItem->getEvaluation(); |
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$evaluations = Evaluation::load($lineItemEvaluation->getId()); |
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/** @var Evaluation $evaluation */ |
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$evaluation = $evaluations[0]; |
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$em = Database::getManager(); |
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$em->remove($this->lineItem); |
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$em->flush(); |
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$evaluation->delete_with_results(); |
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} |
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} |
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Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: