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<?php |
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namespace Staticus\Resources\Commands; |
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use League\Flysystem\FilesystemInterface; |
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use Staticus\Resources\Exceptions\CommandErrorException; |
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use Staticus\Resources\ResourceDOInterface; |
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class DeleteSafetyResourceCommand implements ResourceCommandInterface |
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{ |
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/** |
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* @var ResourceDOInterface |
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*/ |
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protected $resourceDO; |
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/** |
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* @var FilesystemInterface |
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*/ |
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protected $filesystem; |
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public function __construct(ResourceDOInterface $resourceDO, FilesystemInterface $filesystem) |
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{ |
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$this->resourceDO = $resourceDO; |
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$this->filesystem = $filesystem; |
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} |
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public function __invoke() |
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{ |
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$version = $this->resourceDO->getVersion(); |
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$filePath = $this->resourceDO->getFilePath(); |
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if (!$this->resourceDO->getName() || !$this->resourceDO->getType() || !$this->resourceDO->getBaseDirectory()) { |
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throw new CommandErrorException('Cannot delete empty resource'); |
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} |
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if ($this->filesystem->has($filePath)) { |
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// Make backup of the default version |
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if (ResourceDOInterface::DEFAULT_VERSION === $version) { |
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$lastVersion = $this->findLastVersion(); |
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// But only if previous existing version is not the default and not has the same content as deleting |
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if (ResourceDOInterface::DEFAULT_VERSION !== $lastVersion) { |
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$lastVersionResourceDO = clone $this->resourceDO; |
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$lastVersionResourceDO->setVersion($lastVersion); |
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$command = new DestroyEqualResourceCommand( |
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$lastVersionResourceDO |
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, $this->resourceDO |
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, $this->filesystem |
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); |
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$result = $command(); |
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if ($result === $this->resourceDO) { |
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// If the previous file version already the same, current version is already deleted |
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// and backup and yet another deletion is not needed anymore |
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return $this->resourceDO; |
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} |
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} |
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$command = new BackupResourceCommand($this->resourceDO, $this->filesystem); |
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$command($lastVersion); |
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} |
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$this->deleteFile($filePath); |
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return $this->resourceDO; |
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} |
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return $this->resourceDO; |
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} |
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/** |
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* @param $filePath |
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*/ |
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protected function deleteFile($filePath) |
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{ |
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if (!$this->filesystem->delete($filePath)) { |
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throw new CommandErrorException('The file cannot be removed: ' . $filePath); |
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} |
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} |
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/** |
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* @return int |
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*/ |
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protected function findLastVersion() |
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{ |
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$command = new FindResourceLastVersionCommand($this->resourceDO, $this->filesystem); |
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return $command(); |
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} |
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} |