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<?php |
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namespace Lneicelis\Transformer; |
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use Lneicelis\Transformer\Contract\CanPipe; |
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use Lneicelis\Transformer\Contract\CanTransform; |
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use Lneicelis\Transformer\Exception\TransformerNotFoundException; |
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use Lneicelis\Transformer\ValueObject\Context; |
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use Lneicelis\Transformer\ValueObject\Path; |
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class Transformer |
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{ |
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/** @var CanPipe[] */ |
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protected $pipes; |
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/** |
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* @param CanPipe[] $pipes |
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*/ |
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public function __construct(array $pipes = []) |
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{ |
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$this->pipes = $pipes; |
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} |
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/** |
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* @param mixed $resource |
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* @param Context|null $context |
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* @return string|int|float|array |
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* @throws TransformerNotFoundException |
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*/ |
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public function transform($resource, Context $context = null) |
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{ |
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$context = $context ?: new Context(); |
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return $this->transformAny($resource, $context, new Path()); |
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} |
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/** |
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* @param $resource |
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* @param Context $context |
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* @param Path $path |
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* @return array|float|int|string |
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* @throws TransformerNotFoundException |
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*/ |
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protected function transformAny($resource, Context $context, Path $path) |
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{ |
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switch (true) { |
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case is_object($resource): |
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return $this->transformObject($resource, $context, $path); |
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case is_array($resource): |
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return $this->transformArray($resource, $context, $path); |
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default: |
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return $resource; |
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} |
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} |
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/** |
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* @param object $resource |
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* @param Context $context |
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* @param Path $path |
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* @return string|int|float|array |
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* @throws TransformerNotFoundException |
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*/ |
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protected function transformObject($resource, Context $context, Path $path) |
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{ |
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$result = $this->pipe($resource, $context, $path, null); |
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return $this->transformAny($result, $context, $path); |
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} |
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/** |
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* @param array $resourceByKey |
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* @param Context $context |
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* @param Path $path |
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* @return array |
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* @throws TransformerNotFoundException |
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*/ |
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protected function transformArray(array $resourceByKey, Context $context, Path $path) |
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{ |
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$dataByKey = []; |
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foreach ($resourceByKey as $key => $resource) { |
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$dataByKey[$key] = $this->transformAny($resource, $context, $path->stepIn($key)); |
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} |
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return $dataByKey; |
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} |
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/** |
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* @param object $resource |
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* @param Context $context |
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* @param Path $path |
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* @param string|int|float|array $data |
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* @return string|int|float|array |
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*/ |
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protected function pipe($resource, Context $context, Path $path, $data) |
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{ |
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return array_reduce( |
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$this->pipes, |
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function ($data, CanPipe $middleware) use ($resource, $context, $path) { |
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return $middleware->pipe($resource, $context, $path, $data); |
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}, |
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$data |
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); |
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} |
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} |
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lneicelis /
transformer
