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<?php |
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namespace Chubbyphp\Model\Collection; |
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use Chubbyphp\Model\ModelInterface; |
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class LazyModelCollection implements ModelCollectionInterface |
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{ |
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/** |
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* @var \Closure |
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*/ |
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private $resolver; |
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/** |
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* @var ModelInterface[]|array |
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*/ |
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private $initialModels; |
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/** |
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* @var ModelInterface[]|array |
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*/ |
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private $models; |
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/** |
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* @var ModelInterface[]|array |
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*/ |
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private $toRemoveModels; |
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/** |
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* ResolverCollection constructor. |
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* @param \Closure $resolver |
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*/ |
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public function __construct(\Closure $resolver) |
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{ |
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$this->resolver = $resolver; |
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} |
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private function loadModels() |
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{ |
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if (null !== $this->models) { |
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return; |
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} |
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$resolver = $this->resolver; |
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$this->initialModels = (array) $resolver(); |
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$this->models = $this->initialModels; |
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$this->toRemoveModels = []; |
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} |
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/** |
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* @return ModelInterface |
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*/ |
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public function current() |
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{ |
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$this->loadModels(); |
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return current($this->models); |
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} |
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/** |
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* @return ModelInterface|false |
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*/ |
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public function next() |
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{ |
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$this->loadModels(); |
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return next($this->models); |
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} |
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/** |
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* @return string |
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*/ |
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public function key() |
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{ |
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$this->loadModels(); |
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return key($this->models); |
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} |
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/** |
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* @return bool |
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*/ |
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public function valid() |
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{ |
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$this->loadModels(); |
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return (bool) current($this->models); |
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} |
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public function rewind() |
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{ |
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$this->loadModels(); |
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reset($this->models); |
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} |
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/** |
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* @param ModelInterface $model |
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* @return ModelCollectionInterface |
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*/ |
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public function add(ModelInterface $model): ModelCollectionInterface |
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{ |
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$this->loadModels(); |
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$this->models[$model->getId()] = $model; |
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return $this; |
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} |
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/** |
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* @param ModelInterface $model |
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* @return ModelCollectionInterface |
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*/ |
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public function remove(ModelInterface $model): ModelCollectionInterface |
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{ |
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$this->loadModels(); |
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if (isset($this->models[$model->getId()])) { |
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unset($this->models[$model->getId()]); |
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} |
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if (isset($this->initialModels[$model->getId()])) { |
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$this->toRemoveModels[$model->getId()] = $model; |
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} |
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return $this; |
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} |
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/** |
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* @return ModelInterface[]|array |
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*/ |
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public function toPersist(): array |
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{ |
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$this->loadModels(); |
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return $this->models; |
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} |
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/** |
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* @return ModelInterface[]|array |
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*/ |
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public function toRemove(): array |
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{ |
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$this->loadModels(); |
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return $this->toRemoveModels; |
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} |
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/** |
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* @return array |
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*/ |
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public function jsonSerialize(): array |
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{ |
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$this->loadModels(); |
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$serialzedModels = []; |
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foreach ($this->models as $model) { |
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$serialzedModels[] = $model->jsonSerialize(); |
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} |
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return $serialzedModels; |
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} |
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} |
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chubbyphp /
chubbyphp-model
