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<?php
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namespace Swader\Diffbot\Factory;
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use Psr\Http\Message\ResponseInterface as Response;
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use Swader\Diffbot\Entity\EntityIterator;
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use Swader\Diffbot\Exceptions\DiffbotException;
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use Swader\Diffbot\Interfaces\EntityFactory;
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class Entity implements EntityFactory
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{
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12
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protected $apiEntities = [
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'product' => '\Swader\Diffbot\Entity\Product',
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'article' => '\Swader\Diffbot\Entity\Article',
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'image' => '\Swader\Diffbot\Entity\Image',
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'discussion' => '\Swader\Diffbot\Entity\Discussion',
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'*' => '\Swader\Diffbot\Entity\Wildcard',
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];
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/**
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* Creates an appropriate Entity from a given Response
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* If no valid Entity can be found for typo of API, the Wildcard entity is selected
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*
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* @todo: remove error avoidance when issue 12 is fixed: https://github.com/Swader/diffbot-php-client/issues/12
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* @param Response $response
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* @return EntityIterator
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* @throws DiffbotException
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*/
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public function createAppropriateIterator(Response $response)
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{
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$this->checkResponseFormat($response);
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set_error_handler(function() { /* ignore errors */ });
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$arr = json_decode($response->getBody(), true, 512, 1);
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restore_error_handler();
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$objects = [];
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foreach ($arr['objects'] as $object) {
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if (isset($this->apiEntities[$object['type']])) {
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$class = $this->apiEntities[$object['type']];
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} else {
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$class = $this->apiEntities['*'];
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}
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$objects[] = new $class($object);
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}
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return new EntityIterator($objects, $response);
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}
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/**
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* Makes sure the Diffbot response has all the fields it needs to work properly
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*
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* @todo: remove error avoidance when issue 12 is fixed: https://github.com/Swader/diffbot-php-client/issues/12
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* @param Response $response
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* @throws DiffbotException
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*/
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protected function checkResponseFormat(Response $response)
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{
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set_error_handler(function() { /* ignore errors */ });
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$arr = json_decode($response->getBody(), true, 512, 1);
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restore_error_handler();
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if (isset($arr['error'])) {
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throw new DiffbotException('Diffbot returned error ' . $arr['errorCode'] . ': ' . $arr['error']);
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}
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$required = [
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'objects' => 'Objects property missing - cannot extract entity values',
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'request' => 'Request property not found in response!'
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];
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foreach ($required as $k=>$v) {
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if (!isset($arr[$k])) {
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throw new DiffbotException($v);
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}
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}
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}
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} |
Swader /
diffbot-php-client
