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<?php |
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namespace W2w\Lib\Apie\Retrievers; |
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use LimitIterator; |
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use ReflectionClass; |
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use Symfony\Component\Finder\Finder; |
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use Symfony\Component\Finder\SplFileInfo; |
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use Symfony\Component\PropertyAccess\PropertyAccessor; |
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use W2w\Lib\Apie\Exceptions\CanNotDetermineIdException; |
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use W2w\Lib\Apie\Exceptions\CouldNotMakeDirectoryException; |
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use W2w\Lib\Apie\Exceptions\CouldNotRemoveFileException; |
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use W2w\Lib\Apie\Exceptions\CouldNotWriteFileException; |
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use W2w\Lib\Apie\Exceptions\InvalidIdException; |
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use W2w\Lib\Apie\Exceptions\ResourceNotFoundException; |
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use W2w\Lib\Apie\Persisters\ApiResourcePersisterInterface; |
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use W2w\Lib\Apie\SearchFilters\SearchFilterRequest; |
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class FileStorageDataLayer implements ApiResourcePersisterInterface, ApiResourceRetrieverInterface, SearchFilterProviderInterface |
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{ |
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use SearchFilterFromMetadataTrait; |
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private $folder; |
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private $propertyAccessor; |
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public function __construct(string $folder, PropertyAccessor $propertyAccessor) |
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{ |
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$this->folder = $folder; |
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$this->propertyAccessor = $propertyAccessor; |
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} |
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/** |
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* Persist a new API resource. Should return the new API resource. |
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* |
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* @param mixed $resource |
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* @param array $context |
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* @return mixed |
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*/ |
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public function persistNew($resource, array $context = []) |
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{ |
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$identifier = $context['identifier'] ?? 'id'; |
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if (!$this->propertyAccessor->isReadable($resource, $identifier)) { |
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throw new CanNotDetermineIdException($resource, $identifier); |
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} |
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$id = $this->propertyAccessor->getValue($resource, $identifier); |
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$this->store($resource, $id); |
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return $resource; |
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} |
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/** |
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* Persist an existing API resource. The input resource is the modified API resource. Should return the new API |
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* resource. |
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* |
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* @param $resource |
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* @param $int |
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* @param array $context |
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* @return mixed |
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*/ |
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public function persistExisting($resource, $int, array $context = []) |
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{ |
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$identifier = $context['identifier'] ?? 'id'; |
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if ($this->propertyAccessor->isReadable($resource, $identifier)) { |
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$actualIdentifier = $this->propertyAccessor->getValue($resource, $identifier); |
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if ((string) $actualIdentifier !== (string) $int) { |
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throw new InvalidIdException((string) $int); |
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} |
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} |
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$this->store($resource, $int); |
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return $resource; |
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} |
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/** |
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* Removes an existing API resource. |
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* |
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* @param string $resourceClass |
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* @param $id |
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* @param array $context |
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* @return mixed |
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*/ |
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public function remove(string $resourceClass, $id, array $context) |
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{ |
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$file = $this->getFilename($resourceClass, $id); |
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if (!@unlink($file)) { |
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throw new CouldNotRemoveFileException($file); |
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} |
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} |
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/** |
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* Retrieves a single resource by some identifier. |
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* |
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* @param string $resourceClass |
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* @param mixed $id |
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* @param array $context |
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* @return mixed |
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*/ |
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public function retrieve(string $resourceClass, $id, array $context) |
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{ |
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$file = $this->getFilename($resourceClass, $id); |
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if (!file_exists($file)) { |
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throw new ResourceNotFoundException($id); |
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} |
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return unserialize(file_get_contents($file)); |
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} |
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/** |
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* Retrieves a list of resources with some pagination. |
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* |
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* @param string $resourceClass |
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* @param array $context |
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* @param SearchFilterRequest $searchFilterRequest |
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* @return iterable |
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*/ |
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public function retrieveAll(string $resourceClass, array $context, SearchFilterRequest $searchFilterRequest): iterable |
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{ |
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$offset = $searchFilterRequest->getOffset(); |
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$numberOfItems = $searchFilterRequest->getNumberOfItems(); |
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$folder = $this->getFolder($resourceClass); |
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$result = []; |
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$list = new LimitIterator( |
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Finder::create()->files()->sortByName()->depth(0)->in($folder)->getIterator(), |
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$offset, |
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$numberOfItems |
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); |
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foreach ($list as $file) { |
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/** @var SplFileInfo $file */ |
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$result[] = $this->retrieve($resourceClass, $file->getBasename(), $context); |
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} |
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return $result; |
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} |
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protected function getFolder(string $resourceClass): string |
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{ |
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$refl = new ReflectionClass($resourceClass); |
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$folder = $this->folder . DIRECTORY_SEPARATOR . $refl->getShortName(); |
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if (!is_dir($folder)) { |
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if (!@mkdir($folder, 0777, true)) { |
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throw new CouldNotMakeDirectoryException($folder); |
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}; |
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} |
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return $folder; |
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} |
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protected function getFilename(string $resourceClass, string $id): string |
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{ |
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if (!preg_match('/^[a-zA-Z0-9_.-]+$/', $id)) { |
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throw new InvalidIdException($id); |
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} |
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$folder = $this->getFolder($resourceClass); |
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return $folder . DIRECTORY_SEPARATOR . $id; |
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} |
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private function store($resource, string $id) { |
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$filename = $this->getFilename(get_class($resource), $id); |
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if (false === file_put_contents($filename, serialize($resource))) { |
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throw new CouldNotWriteFileException($filename); |
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}; |
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} |
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} |
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pjordaan /
apie
