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<?php |
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namespace Rexlabs\Smokescreen\Transformer; |
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use Rexlabs\Smokescreen\Exception\ParseDefinitionException; |
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use Rexlabs\Smokescreen\Helpers\StrHelper; |
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use Rexlabs\Smokescreen\Resource\Collection; |
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use Rexlabs\Smokescreen\Resource\Item; |
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use Rexlabs\Smokescreen\Transformer\Props\DeclarativeProps; |
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class AbstractTransformer implements TransformerInterface |
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{ |
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use DeclarativeProps; |
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// protected $autoIncludes = true; |
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/** @var array The list of available includes */ |
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protected $includes = []; |
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/** @var array The default properties to return (if blank, all props from transform() are returned) */ |
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protected $defaultProps = []; |
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/** @var null|array The $includes property is processed and turned into a map */ |
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protected $cachedIncludeMap; |
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// protected $scope; |
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/** |
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* {@inheritdoc} |
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* |
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* @throws ParseDefinitionException |
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*/ |
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public function getAvailableIncludes(): array |
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{ |
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return array_keys($this->getCachedIncludeMap()); |
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} |
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/** |
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* Return a cached version of the include map. |
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* |
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* @see AbstractTransformer::getIncludeMap() |
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* |
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* @throws ParseDefinitionException |
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* |
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* @return array |
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*/ |
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protected function getCachedIncludeMap(): array |
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{ |
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if ($this->cachedIncludeMap === null) { |
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$this->cachedIncludeMap = $this->getIncludeMap(); |
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} |
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return $this->cachedIncludeMap; |
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} |
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/** |
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* Process the $includes property and convert the directives into a map |
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* indexed by the include key, and specifying: default, relation, method. |
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* |
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* @throws ParseDefinitionException |
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* |
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* @return array |
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*/ |
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public function getIncludeMap(): array |
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{ |
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$map = []; |
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foreach ($this->includes as $includeKey => $definition) { |
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if (\is_int($includeKey)) { |
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$includeKey = $definition; |
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$definition = null; |
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} |
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$settings = []; |
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if (!empty($definition)) { |
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$parts = preg_split('/\s*\|\s*/', $definition); |
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foreach ($parts as $part) { |
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if (!preg_match('/^([^:]+)(:(.+))?$/', $part, $match)) { |
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throw new ParseDefinitionException("Unable to parse field definition for '{$includeKey}''"); |
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} |
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// If only list() was viable ... |
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$directive = $match[1]; |
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$val = $match[3] ?? null; |
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switch ($directive) { |
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case 'default': |
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$settings['default'] = true; |
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break; |
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case 'relation': |
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$settings['relation'] = !empty($val) ? |
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preg_split('/s*,\s*/', $val) : [$includeKey]; |
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break; |
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case 'method': |
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if (!empty($val)) { |
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$settings['method'] = $val; |
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} |
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break; |
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default: |
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throw new ParseDefinitionException("Invalid key '{$directive}' for {$includeKey}"); |
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} |
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} |
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} |
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if (!isset($settings['relation'])) { |
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$settings['relation'] = []; |
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} |
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if (!isset($settings['method'])) { |
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$settings['method'] = 'include'.StrHelper::studlyCase($includeKey); |
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} |
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if (!isset($settings['default'])) { |
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$settings['default'] = false; |
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} |
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$map[$includeKey] = $settings; |
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} |
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return $map; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws ParseDefinitionException |
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*/ |
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public function getDefaultIncludes(): array |
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{ |
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return array_values(array_filter(array_keys($this->getCachedIncludeMap()), function ($includeKey) { |
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return $this->getCachedIncludeMap()[$includeKey]['default']; |
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})); |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @throws ParseDefinitionException |
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*/ |
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public function getRelationships(): array |
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{ |
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return array_column( |
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array_filter(array_map(function ($includeKey, $settings) { |
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return $settings['relation'] ? [$includeKey, $settings['relation']] : null; |
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}, array_keys($this->getCachedIncludeMap()), array_values($this->getCachedIncludeMap()))), |
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1, 0 |
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); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getDefaultProps(): array |
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{ |
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return $this->defaultProps; |
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} |
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// /** |
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// * @inheritdoc |
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// */ |
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// public function getScope(): Scope |
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// { |
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// return $this->scope; |
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// } |
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/** |
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* Create a new Item resource. |
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* |
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* @param mixed $data |
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* @param mixed|null $transformer |
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* @param string|null $resourceKey |
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* |
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* @return Item |
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*/ |
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public function item($data, $transformer = null, $resourceKey = null): Item |
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{ |
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return new Item($data, $transformer, $resourceKey); |
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} |
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/** |
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* Create new Collection resource. |
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* |
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* @param mixed $data |
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* @param mixed|null $transformer |
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* @param string|null $resourceKey |
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* |
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* @return Collection |
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*/ |
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public function collection($data, $transformer = null, $resourceKey = null): Collection |
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{ |
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return new Collection($data, $transformer, $resourceKey); |
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} |
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/** |
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* @param $data |
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* |
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* @return array |
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* @throws \InvalidArgumentException |
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*/ |
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public function getTransformedData($data): array |
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{ |
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if (method_exists($this, 'transform')) { |
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// Transformer provides a 'transform' method |
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return (array) $this->transform($data); |
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} |
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// Otherwise, use the withProps method which calls getProps() |
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return $this->withProps($data, $this->getProps()); |
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} |
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} |
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rexlabsio /
smokescreen-php
