/**
* @param $folder
* @param \taoQtiTest_models_classes_QtiResource $qtiItemResource
* @param $itemClass
* @param bool|false $extractApip
* @param array $dependencies
* @return common_report_Report
* @throws common_exception_Error
*/
public function importQtiItem($folder, Resource $qtiItemResource, $itemClass, $extractApip = false, $dependencies = array())
{
try {
//load the information about resources in the manifest
$itemService = taoItems_models_classes_ItemsService::singleton();
$qtiService = Service::singleton();
// The metadata import feature needs a DOM representation of the manifest.
$domManifest = new DOMDocument('1.0', 'UTF-8');
$domManifest->load($folder . 'imsmanifest.xml');
$metadataMapping = $qtiService->getMetadataRegistry()->getMapping();
$metadataInjectors = array();
$metadataGuardians = array();
$metadataClassLookups = array();
$metadataValues = array();
foreach ($metadataMapping['injectors'] as $injector) {
$metadataInjectors[] = new $injector();
}
foreach ($metadataMapping['guardians'] as $guardian) {
$metadataGuardians[] = new $guardian();
}
foreach ($metadataMapping['classLookups'] as $classLookup) {
$metadataClassLookups[] = new $classLookup();
}
foreach ($metadataMapping['extractors'] as $extractor) {
$metadataExtractor = new $extractor();
$metadataValues = array_merge($metadataValues, $metadataExtractor->extract($domManifest));
}
$sources = MediaService::singleton()->getWritableSources();
$sharedStorage = array_shift($sources);
$sharedFiles = array();
try {
$resourceIdentifier = $qtiItemResource->getIdentifier();
// Use the guardians to check whether or not the item has to be imported.
foreach ($metadataGuardians as $guardian) {
if (isset($metadataValues[$resourceIdentifier]) === true) {
if (($guard = $guardian->guard($metadataValues[$resourceIdentifier])) !== false) {
$msg = __('The IMS QTI Item referenced as "%s" in the IMS Manifest file was already stored in the Item Bank.', $qtiItemResource->getIdentifier());
$report = common_report_Report::createInfo($msg, $guard);
// Simply do not import again.
return $report;
}
}
}
$targetClass = false;
// Use the classLookups to determine where the item has to go.
foreach ($metadataClassLookups as $classLookup) {
if (isset($metadataValues[$resourceIdentifier]) === true) {
if (($targetClass = $classLookup->lookup($metadataValues[$resourceIdentifier])) !== false) {
break;
}
}
}
$qtiFile = $folder . $qtiItemResource->getFile();
$qtiModel = $this->createQtiItemModel($qtiFile);
$rdfItem = $this->createRdfItem($targetClass !== false ? $targetClass : $itemClass, $qtiModel);
$name = $rdfItem->getLabel();
$itemContent = $itemService->getItemContent($rdfItem);
$xincluded = array();
foreach ($qtiModel->getBody()->getComposingElements('oat\\taoQtiItem\\model\\qti\\Xinclude') as $xincludeEle) {
$xincluded[] = $xincludeEle->attr('href');
}
$local = new LocalItemSource(array('item' => $rdfItem));
foreach ($qtiItemResource->getAuxiliaryFiles() as $auxResource) {
// file on FS
$auxFile = $folder . str_replace('/', DIRECTORY_SEPARATOR, $auxResource);
// rel path in item
$auxPath = str_replace(DIRECTORY_SEPARATOR, '/', helpers_File::getRelPath($qtiFile, $auxFile));
if (!empty($sharedStorage) && in_array($auxPath, $xincluded)) {
$md5 = md5_file($auxFile);
if (isset($sharedFiles[$md5])) {
$info = $sharedFiles[$md5];
\common_Logger::i('Auxiliary file \'' . $auxPath . '\' linked to shared storage.');
} else {
// TODO cleanup sharedstimulus import/export
// move to taoQti item or library
// validate the shared stimulus
SharedStimulusImporter::isValidSharedStimulus($auxFile);
// embed assets in the shared stimulus
$newXmlFile = SharedStimulusPackageImporter::embedAssets($auxFile);
$info = $sharedStorage->add($newXmlFile, basename($auxFile), $name);
if (method_exists($sharedStorage, 'forceMimeType')) {
// add() does not return link, so we need to parse it
$resolver = new ItemMediaResolver($rdfItem, '');
$asset = $resolver->resolve($info['uri']);
$sharedStorage->forceMimeType($asset->getMediaIdentifier(), 'application/qti+xml');
}
$sharedFiles[$md5] = $info;
\common_Logger::i('Auxiliary file \'' . $auxPath . '\' added to shared storage.');
}
} else {
// store locally, in a safe directory
$safePath = '';
if (dirname($auxPath) !== '.') {
$safePath = str_replace('../', '', dirname($auxPath)) . '/';
}
$info = $local->add($auxFile, basename($auxFile), $safePath);
\common_Logger::i('Auxiliary file \'' . $auxPath . '\' copied.');
}
// replace uri if changed
if ($auxPath != ltrim($info['uri'], '/')) {
$itemContent = str_replace($auxPath, $info['uri'], $itemContent);
}
}
foreach ($qtiItemResource->getDependencies() as $dependency) {
// file on FS
if (isset($dependencies[$dependency])) {
$auxFile = $dependencies[$dependency]->getFile();
$auxFile = $folder . str_replace('/', DIRECTORY_SEPARATOR, $auxFile);
// rel path in item
$auxPath = str_replace(DIRECTORY_SEPARATOR, '/', helpers_File::getRelPath($qtiFile, $auxFile));
if (!empty($sharedStorage) && in_array($auxPath, $xincluded)) {
$md5 = md5_file($auxFile);
if (isset($sharedFiles[$md5])) {
$info = $sharedFiles[$md5];
\common_Logger::i('Auxiliary file \'' . $auxPath . '\' linked to shared storage.');
} else {
// TODO cleanup sharedstimulus import/export
// move to taoQti item or library
// validate the shared stimulus
SharedStimulusImporter::isValidSharedStimulus($auxFile);
// embed assets in the shared stimulus
$newXmlFile = SharedStimulusPackageImporter::embedAssets($auxFile);
$info = $sharedStorage->add($newXmlFile, basename($auxFile), $name);
if (method_exists($sharedStorage, 'forceMimeType')) {
// add() does not return link, so we need to parse it
$resolver = new ItemMediaResolver($rdfItem, '');
$asset = $resolver->resolve($info['uri']);
$sharedStorage->forceMimeType($asset->getMediaIdentifier(), 'application/qti+xml');
}
$sharedFiles[$md5] = $info;
\common_Logger::i('Auxiliary file \'' . $auxPath . '\' added to shared storage.');
}
} else {
// store locally, in a safe directory
$safePath = '';
if (dirname($auxPath) !== '.') {
$safePath = str_replace('../', '', dirname($auxPath)) . '/';
}
$info = $local->add($auxFile, basename($auxFile), $safePath);
\common_Logger::i('Auxiliary file \'' . $auxPath . '\' copied.');
}
// replace uri if changed
if ($auxPath != ltrim($info['uri'], '/')) {
$itemContent = str_replace($auxPath, $info['uri'], $itemContent);
}
}
}
// Finally, import metadata.
$this->importItemMetadata($metadataValues, $qtiItemResource, $rdfItem, $metadataInjectors);
// And Apip if wanted
if ($extractApip) {
$this->storeApip($qtiFile, $rdfItem);
}
$itemService->setItemContent($rdfItem, $itemContent);
$msg = __('The IMS QTI Item referenced as "%s" in the IMS Manifest file was successfully imported.', $qtiItemResource->getIdentifier());
$report = common_report_Report::createSuccess($msg, $rdfItem);
} catch (ParsingException $e) {
$report = new common_report_Report(common_report_Report::TYPE_ERROR, $e->getUserMessage());
} catch (ValidationException $ve) {
$report = \common_report_Report::createFailure(__('IMS QTI Item referenced as "%s" in the IMS Manifest file could not be imported.', $qtiItemResource->getIdentifier()));
$report->add($ve->getReport());
} catch (Exception $e) {
// an error occured during a specific item
$report = new common_report_Report(common_report_Report::TYPE_ERROR, __("An unknown error occured while importing the IMS QTI Package."));
common_Logger::e($e->getMessage());
}
} catch (ValidationException $ve) {
$validationReport = \common_report_Report::createFailure("The IMS Manifest file could not be validated");
$validationReport->add($ve->getReport());
$report->setMessage(__("No Items could be imported from the given IMS QTI package."));
$report->setType(common_report_Report::TYPE_ERROR);
$report->add($validationReport);
} catch (common_exception_UserReadableException $e) {
$report = new common_report_Report(common_report_Report::TYPE_ERROR, __($e->getUserMessage()));
$report->add($e);
}
return $report;
}
/**
* Import dependencies files
*
* @param QtiResource $qtiItemResource
* @param $dependencies
* @return $this
* @throws AssetManagerException
*/
public function importDependencyFiles(QtiResource $qtiItemResource, $dependencies)
{
$qtiFile = $this->getSource() . \helpers_File::urlToPath($qtiItemResource->getFile());
foreach ($qtiItemResource->getDependencies() as $dependenciesFile) {
if (!isset($dependencies[$dependenciesFile])) {
continue;
}
$absolutePath = $this->getAbsolutePath($dependencies[$dependenciesFile]->getFile());
$relativePath = $this->getRelativePath($qtiFile, $absolutePath);
try {
$this->importAsset($absolutePath, $relativePath);
} catch (\common_Exception $e) {
throw new AssetManagerException('Error occurs during dependency assets handling for item: ' . $qtiItemResource->getIdentifier() . ', assetFile: ' . $relativePath, 0, $e);
}
}
return $this;
}