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<?php |
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namespace SimaLand\API; |
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use GuzzleHttp\Psr7\Response; |
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use SimaLand\API\Rest\Client; |
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use SimaLand\API\Rest\Request; |
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/** |
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* Абстрактный класс для загрузки данных сущности. |
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* |
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* Класс реализует интерфейс Iterator. |
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*/ |
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abstract class AbstractList extends Object implements \Iterator |
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{ |
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/** |
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* Кол-во потоков. |
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* |
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* @var int |
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*/ |
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public $countThreads = 5; |
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/** |
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* GET параметр отвечающий за поток. |
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* |
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* @var string |
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*/ |
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public $keyThreads = 'page'; |
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/** |
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* Ключ альтернативной пагинации. |
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* |
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* @var string |
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*/ |
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public $keyAlternativePagination = 'id-greater-than'; |
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/** |
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* SimaLand кдиент для запросов. |
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* |
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* @var \SimaLand\API\Rest\Client |
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*/ |
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private $client; |
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/** |
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* Список запросов. |
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* |
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* @var Request[] |
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*/ |
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private $requests = []; |
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/** |
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* Список данных полученные по API. |
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* |
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* @var array |
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*/ |
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private $values = []; |
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/** |
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* GET параметры запроса. |
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* |
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* @var array |
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*/ |
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public $getParams = []; |
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/** |
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* Ключ текущей записи. |
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* |
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* @var int |
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*/ |
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private $key; |
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/** |
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* Текущая запись. |
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* |
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* @var mixed |
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*/ |
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private $current; |
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/** |
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* @param Client $client |
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* @param array $options |
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*/ |
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public function __construct(Client $client, array $options = []) |
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{ |
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$this->client = $client; |
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parent::__construct($options); |
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} |
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/** |
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* Получить наименование сущности. |
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* |
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* @return string |
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*/ |
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abstract public function getEntity(); |
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/** |
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* Добавить get параметры. |
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* |
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* @param array $params |
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* @return AbstractList |
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*/ |
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public function addGetParams(array $params) |
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{ |
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$this->getParams = array_merge($this->getParams, $params); |
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return $this; |
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} |
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/** |
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* Назначить следующию страницу запросу. |
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* |
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* @param Request $request |
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* @param Record|null $record |
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*/ |
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public function assignPage(Request &$request, Record $record = null) |
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{ |
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$currentPage = 1; |
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if (!is_array($request->getParams)) { |
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$request->getParams = (array)$request->getParams; |
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} |
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if (isset($request->getParams[$this->keyThreads])) { |
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$currentPage = (int)$request->getParams[$this->keyThreads]; |
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} |
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$request->getParams[$this->keyThreads] = $currentPage + $this->countThreads; |
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} |
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/** |
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* Назначить номер потока для запроса. |
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* |
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* @param Request $request |
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* @param int $number |
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*/ |
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public function assignThreadsNumber(Request &$request, $number = 0) |
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{ |
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if (!is_array($request->getParams)) { |
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$request->getParams = (array)$request->getParams; |
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} |
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if (!isset($request->getParams[$this->keyThreads])) { |
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$request->getParams[$this->keyThreads] = 1; |
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} |
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$request->getParams[$this->keyThreads] += $number; |
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} |
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/** |
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* Наименование ключа содержащего набора данных сущности. |
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* |
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* @return string |
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*/ |
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public function getCollectionKey() |
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{ |
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return 'items'; |
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} |
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/** |
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* Наименование ключа содержащего мета данные. |
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* |
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* @return string |
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*/ |
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public function getMetaKey() |
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{ |
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return '_meta'; |
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} |
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/** |
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* Палучить набор данных сущности. |
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* |
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* @return Response[] |
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* @throws \Exception |
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*/ |
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public function get() |
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{ |
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return $this->client->batchQuery($this->getRequests()); |
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} |
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/** |
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* Установить запросы к API. |
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* |
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* @param Request[] $requests |
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* @throws \Exception |
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*/ |
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public function setRequests(array $requests) |
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{ |
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$this->requests = []; |
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foreach ($requests as $request) { |
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if (!$request instanceof Request) { |
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throw new \Exception('Request must be implement "\SimaLand\API\Rest\Request"'); |
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} |
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$this->requests[] = $request; |
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} |
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} |
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/** |
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* Получить запросы к API. |
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* |
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* @return array|Rest\Request[] |
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*/ |
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public function getRequests() |
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{ |
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if (empty($this->requests)) { |
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$requests = []; |
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if (!is_null($this->keyThreads) && $this->countThreads > 1) { |
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for ($i = 0; $i < $this->countThreads; $i++) { |
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$requests[$i] = new Request([ |
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'entity' => $this->getEntity(), |
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'getParams' => $this->getParams, |
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]); |
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$this->assignThreadsNumber($requests[$i], $i); |
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} |
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} else { |
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$requests[] = new Request([ |
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'entity' => $this->getEntity(), |
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'getParams' => $this->getParams, |
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]); |
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} |
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$this->requests = $requests; |
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} |
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return $this->requests; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function current() |
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{ |
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return $this->current; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function next() |
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{ |
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if (empty($this->values)) { |
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$this->getData(); |
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} |
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$this->current = array_shift($this->values); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function key() |
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{ |
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return $this->key++; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function valid() |
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{ |
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return !empty($this->current); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function rewind() |
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{ |
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$this->values = []; |
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$this->current = null; |
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$this->key = 0; |
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$this->next(); |
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} |
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/** |
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* Получить тело ответа от API. |
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* |
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* @param Response $response |
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* @return bool |
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* @throws \Exception |
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*/ |
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private function getBody(Response $response) |
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{ |
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$body = json_decode($response->getBody(), true); |
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$statusCode = $response->getStatusCode(); |
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if (($statusCode < 200 || $statusCode >= 300) && $statusCode != 404) { |
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if ($body && isset($body['message'])) { |
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$message = $body['message']; |
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} else { |
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$message = $response->getReasonPhrase(); |
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} |
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throw new \Exception($message, $statusCode); |
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} elseif ( |
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$statusCode == 404 || |
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!$body || |
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($body && !isset($body[$this->getCollectionKey()])) |
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) { |
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return false; |
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} |
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return $body; |
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} |
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/** |
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* Получить набор данных от API. |
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* |
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* @throws \Exception |
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*/ |
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private function getData() |
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{ |
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$responses = $this->get(); |
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$collectionKey = $this->getCollectionKey(); |
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$metaKey = $this->getMetaKey(); |
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$requests = $this->getRequests(); |
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$record = null; |
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foreach ($responses as $key => $response) { |
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$body = $this->getBody($response); |
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if (!$body) { |
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unset($requests[$key]); |
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continue; |
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} |
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foreach ($body[$collectionKey] as $item) { |
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$record = new Record([ |
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'data' => $item, |
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'meta' => isset($body[$metaKey]) ? $body[$metaKey] : null, |
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]); |
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$this->values[] = $record; |
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} |
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if (!is_null($record)) { |
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$this->assignPage($requests[$key], $record); |
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} |
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} |
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$this->setRequests($requests); |
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} |
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} |
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