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<?php |
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namespace Cerbero\Transformer; |
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use BadMethodCallException; |
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use Cerbero\Transformer\Transformations\AbstractTransformation as Transformation; |
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use Throwable; |
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use Illuminate\Support\Str; |
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/** |
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* The calls transformation trait. |
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* |
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*/ |
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trait CallsTransformation |
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{ |
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/** |
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* Resolve and call the given transformation |
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* |
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* @param string $transformation |
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* @param array $parameters |
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* @return mixed |
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*/ |
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protected function callTransformation(string $transformation, array $parameters) |
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{ |
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// Call custom transformation in the current transformer if implemented |
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if (is_callable([$this, $transformation])) { |
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return call_user_func_array([$this, $transformation], $parameters); |
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} |
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// Call custom transformation class if implemented |
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if (class_exists($customTransformation = $this->qualifyTransformation($transformation, true))) { |
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return $this->callCustomTransformation($customTransformation, $parameters); |
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} |
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// Call function or method if exists |
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if (is_callable($transformation)) { |
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array_unshift($parameters, $this->value); |
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return $this->callCallableTransformation($transformation, $parameters); |
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} |
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// Call internal transformations if exists |
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if (class_exists($internalTransformation = $this->qualifyTransformation($transformation))) { |
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return $this->callCustomTransformation($internalTransformation, $parameters); |
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} |
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throw new BadMethodCallException("Unable to call the transformation {$transformation}"); |
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} |
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/** |
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* Retrieve the fully qualified class name of the given transformation |
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* |
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* @param string $transformation |
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* @param bool $isCustom |
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* @return string |
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*/ |
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protected function qualifyTransformation(string $transformation, bool $isCustom = false): string |
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{ |
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$namespace = $isCustom ? $this->getCustomTransformationNamespace() : 'Cerbero\Transformer\Transformations'; |
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return Str::finish($namespace, '\\') . ucfirst($transformation) . 'Transformation'; |
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} |
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/** |
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* Retrieve the custom namespace for transformations |
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* |
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* @return string |
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*/ |
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protected function getCustomTransformationNamespace(): string |
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{ |
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return ''; |
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} |
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/** |
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* Call the given custom transformation |
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* |
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* @param string $transformation |
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* @param array $parameters |
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* @return mixed |
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*/ |
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protected function callCustomTransformation(string $transformation, array $parameters) |
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{ |
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if (is_subclass_of($transformation, Transformation::class)) { |
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return (new $transformation($this->value, $this->item))->apply($parameters); |
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} |
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throw new BadMethodCallException('Custom transformations need to implement ' . Transformation::class); |
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} |
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/** |
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* Call the given callable transformation |
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* |
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* @param string $transformation |
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* @param array $parameters |
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* @return mixed |
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*/ |
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protected function callCallableTransformation(string $transformation, array $parameters) |
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{ |
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// Try to call a function or a method statically |
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try { |
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return call_user_func_array($transformation, $parameters); |
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} catch (Throwable $e) { |
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// Try to call a method from a class instance |
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try { |
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$callable = explode('::', $transformation); |
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return call_user_func_array([new $callable[0], $callable[1] ?? ''], $parameters); |
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} catch (Throwable $e) { |
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throw new BadMethodCallException("Unable to call {$transformation}: " . $e->getMessage()); |
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} |
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} |
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} |
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} |
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cerbero90 /
Transformer
