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<?php |
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namespace Maztech; |
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use ArrayIterator; |
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use IteratorAggregate; |
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use ArrayAccess; |
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use Maztech\Authentication\AccessToken; |
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use Maztech\Exceptions\InstagramSDKException; |
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/** |
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* Class BatchRequest |
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* |
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* @package Instagram |
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*/ |
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class InstagramBatchRequest extends InstagramRequest implements IteratorAggregate, ArrayAccess |
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{ |
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/** |
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* @var array An array of InstagramRequest entities to send. |
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*/ |
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protected $requests = []; |
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/** |
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* @var array An array of files to upload. |
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*/ |
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protected $attachedFiles; |
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/** |
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* Creates a new Request entity. |
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* |
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* @param InstagramApp|null $app |
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* @param array $requests |
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* @param AccessToken|string|null $accessToken |
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* @param string|null $graphVersion |
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*/ |
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public function __construct(InstagramApp $app = null, array $requests = [], $accessToken = null, $graphVersion = null) |
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{ |
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parent::__construct($app, $accessToken, 'POST', '', [], null, $graphVersion); |
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$this->add($requests); |
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} |
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/** |
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* Adds a new request to the array. |
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* |
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* @param InstagramRequest|array $request |
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* @param string|null|array $options Array of batch request options e.g. 'name', 'omit_response_on_success'. |
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* If a string is given, it is the value of the 'name' option. |
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* |
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* @return InstagramBatchRequest |
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* |
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* @throws \InvalidArgumentException |
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*/ |
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public function add($request, $options = null) |
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{ |
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if (is_array($request)) { |
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foreach ($request as $key => $req) { |
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$this->add($req, $key); |
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} |
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return $this; |
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} |
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if (!$request instanceof InstagramRequest) { |
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throw new \InvalidArgumentException('Argument for add() must be of type array or InstagramRequest.'); |
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} |
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if (null === $options) { |
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$options = []; |
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} elseif (!is_array($options)) { |
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$options = ['name' => $options]; |
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} |
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$this->addFallbackDefaults($request); |
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$name = isset($options['name']) ? $options['name'] : null; |
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unset($options['name']); |
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$requestToAdd = [ |
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'name' => $name, |
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'request' => $request, |
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'options' => $options |
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]; |
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$this->requests[] = $requestToAdd; |
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return $this; |
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} |
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/** |
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* Ensures that the InstagramApp and access token fall back when missing. |
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* |
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* @param InstagramRequest $request |
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* |
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* @throws InstagramSDKException |
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*/ |
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public function addFallbackDefaults(InstagramRequest $request) |
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{ |
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if (!$request->getApp()) { |
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$app = $this->getApp(); |
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if (!$app) { |
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throw new InstagramSDKException('Missing InstagramApp on InstagramRequest and no fallback detected on InstagramBatchRequest.'); |
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} |
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$request->setApp($app); |
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} |
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if (!$request->getAccessToken()) { |
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$accessToken = $this->getAccessToken(); |
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if (!$accessToken) { |
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throw new InstagramSDKException('Missing access token on InstagramRequest and no fallback detected on InstagramBatchRequest.'); |
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} |
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$request->setAccessToken($accessToken); |
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} |
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} |
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/** |
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* Return the InstagramRequest entities. |
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* |
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* @return array |
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*/ |
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public function getRequests() |
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{ |
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return $this->requests; |
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} |
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/** |
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* Prepares the requests to be sent as a batch request. |
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*/ |
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public function prepareRequestsForBatch() |
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{ |
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$this->validateBatchRequestCount(); |
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$params = [ |
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'batch' => $this->convertRequestsToJson(), |
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'include_headers' => true, |
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]; |
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$this->setParams($params); |
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} |
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/** |
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* Converts the requests into a JSON(P) string. |
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* |
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* @return string |
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*/ |
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public function convertRequestsToJson() |
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{ |
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$requests = []; |
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foreach ($this->requests as $request) { |
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$options = []; |
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if (null !== $request['name']) { |
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$options['name'] = $request['name']; |
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} |
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$options += $request['options']; |
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$requests[] = $this->requestEntityToBatchArray($request['request'], $options, $request['attached_files']); |
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} |
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return json_encode($requests); |
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} |
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/** |
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* Validate the request count before sending them as a batch. |
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* |
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* @throws InstagramSDKException |
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*/ |
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public function validateBatchRequestCount() |
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{ |
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$batchCount = count($this->requests); |
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if ($batchCount === 0) { |
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throw new InstagramSDKException('There are no batch requests to send.'); |
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} elseif ($batchCount > 50) { |
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// Per: https://developers.Instagram.com/docs/graph-api/making-multiple-requests#limits |
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throw new InstagramSDKException('You cannot send more than 50 batch requests at a time.'); |
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} |
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} |
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/** |
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* Converts a Request entity into an array that is batch-friendly. |
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* |
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* @param InstagramRequest $request The request entity to convert. |
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* @param string|null|array $options Array of batch request options e.g. 'name', 'omit_response_on_success'. |
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* If a string is given, it is the value of the 'name' option. |
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* @param string|null $attachedFiles Names of files associated with the request. |
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* |
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* @return array |
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*/ |
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public function requestEntityToBatchArray(InstagramRequest $request, $options = null, $attachedFiles = null) |
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{ |
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if (null === $options) { |
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$options = []; |
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} elseif (!is_array($options)) { |
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$options = ['name' => $options]; |
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} |
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$compiledHeaders = []; |
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$headers = $request->getHeaders(); |
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foreach ($headers as $name => $value) { |
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$compiledHeaders[] = $name . ': ' . $value; |
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} |
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$batch = [ |
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'headers' => $compiledHeaders, |
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'method' => $request->getMethod(), |
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'relative_url' => $request->getUrl(), |
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]; |
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// Since file uploads are moved to the root request of a batch request, |
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// the child requests will always be URL-encoded. |
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$body = $request->getUrlEncodedBody()->getBody(); |
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if ($body) { |
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$batch['body'] = $body; |
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} |
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$batch += $options; |
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if (null !== $attachedFiles) { |
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$batch['attached_files'] = $attachedFiles; |
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} |
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return $batch; |
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} |
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/** |
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* Get an iterator for the items. |
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* |
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* @return ArrayIterator |
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*/ |
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public function getIterator() |
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{ |
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return new ArrayIterator($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 offsetSet($offset, $value) |
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{ |
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$this->add($value, $offset); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function offsetExists($offset) |
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{ |
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return isset($this->requests[$offset]); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function offsetUnset($offset) |
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{ |
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unset($this->requests[$offset]); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function offsetGet($offset) |
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{ |
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return isset($this->requests[$offset]) ? $this->requests[$offset] : null; |
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} |
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} |
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This check compares calls to functions or methods with their respective definitions. If the call has more arguments than are defined, it raises an issue.
If a function is defined several times with a different number of parameters, the check may pick up the wrong definition and report false positives. One codebase where this has been known to happen is Wordpress. Please note the @ignore annotation hint above.