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<?php |
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namespace Chadicus\Marvel\Api; |
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use GuzzleHttp; |
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use Psr\SimpleCache\CacheInterface; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* PHP Client for the Marvel API. |
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*/ |
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class Client implements ClientInterface |
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{ |
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/** |
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* The default ttl for cached responses (24 hours). |
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* |
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* @link http://developer.marvel.com/documentation/attribution Marvel's rules for caching. |
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* |
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* @const integer |
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*/ |
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const MAX_TTL = 86400; |
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/** |
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* The public api key issued by Marvel. |
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* |
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* @var string |
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*/ |
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private $publicApiKey; |
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/** |
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* The private api key issued by Marvel. |
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* |
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* @var string |
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*/ |
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private $privateApiKey; |
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/** |
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* Guzzle HTTP Client implementation. |
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* |
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* @var GuzzleHttp\ClientInterface |
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*/ |
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private $guzzleClient; |
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/** |
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* Cache implementation. |
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* |
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* @var CacheInterface |
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*/ |
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private $cache; |
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/** |
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* The Marvel API url. |
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* |
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* @const string |
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*/ |
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const BASE_URL = 'http://gateway.marvel.com/v1/public/'; |
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/** |
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* Construct a new Client. |
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* |
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* @param string $privateApiKey The private api key issued by Marvel. |
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* @param string $publicApiKey The public api key issued by Marvel. |
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* @param GuzzleHttp\ClientInterface $guzzleClient Implementation of a Guzzle HTTP client. |
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* @param CacheInterface $cache Implementation of Cache. |
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*/ |
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final public function __construct( |
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string $privateApiKey, |
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string $publicApiKey, |
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GuzzleHttp\ClientInterface $guzzleClient = null, |
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CacheInterface $cache = null |
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) { |
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$this->privateApiKey = $privateApiKey; |
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$this->publicApiKey = $publicApiKey; |
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$this->guzzleClient = $guzzleClient ?: new GuzzleHttp\Client(); |
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$this->cache = $cache ?: new Cache\NullCache(); |
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} |
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/** |
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* Execute a search request against the Marvel API. |
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* |
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* @param string $resource The API resource to search for. |
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* @param array $filters Array of search criteria to use in request. |
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* |
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* @return null|DataWrapper |
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* |
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* @throws \InvalidArgumentException Thrown if $resource is empty or not a string. |
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*/ |
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final public function search(string $resource, array $filters = []) |
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{ |
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$filters['apikey'] = $this->publicApiKey; |
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$timestamp = time(); |
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$filters['ts'] = $timestamp; |
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$filters['hash'] = md5($timestamp . $this->privateApiKey . $this->publicApiKey); |
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$url = self::BASE_URL . urlencode($resource) . '?' . http_build_query($filters); |
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$response = $this->send($url); |
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if ($response->getStatusCode() !== 200) { |
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return null; |
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} |
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return DataWrapper::fromJson((string)$response->getBody()); |
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} |
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/** |
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* Execute a GET request against the Marvel API for a single resource. |
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* |
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* @param string $resource The API resource to search for. |
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* @param integer $id The id of the API resource. |
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* |
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* @return null|DataWrapper |
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*/ |
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final public function get(string $resource, int $id) |
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{ |
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$timestamp = time(); |
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$query = [ |
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'apikey' => $this->publicApiKey, |
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'ts' => $timestamp, |
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'hash' => md5($timestamp . $this->privateApiKey . $this->publicApiKey), |
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]; |
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$url = self::BASE_URL . urlencode($resource) . "/{$id}?" . http_build_query($query); |
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$response = $this->send($url); |
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if ($response->getStatusCode() !== 200) { |
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return null; |
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} |
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return DataWrapper::fromJson((string)$response->getBody()); |
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} |
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/** |
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* Send the given API url request. |
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* |
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* @param string $url The URL to request. |
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* |
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* @return ResponseInterface |
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*/ |
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final private function send(string $url) : ResponseInterface |
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{ |
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$response = $this->cache->get($url); |
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if ($response !== null) { |
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return $response; |
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} |
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$response = $this->guzzleClient->request( |
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'GET', |
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$url, |
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[ |
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'http_errors' => false, |
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'headers' => ['Accept' => 'application/json'], |
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] |
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); |
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$this->cache->set($url, $response, self::MAX_TTL); |
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return $response; |
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} |
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/** |
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* Allow calls such as $client->characters(); |
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* |
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* @param string $name The name of the api resource. |
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* @param array $arguments The parameters to pass to get() or search(). |
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* |
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* @return Collection|EntityInterface|null |
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*/ |
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final public function __call(string $name, array $arguments) |
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{ |
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$resource = strtolower($name); |
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$idOrFilters = array_shift($arguments) ?: []; |
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if (is_array($idOrFilters)) { |
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return new Collection($this, $resource, $idOrFilters); |
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} |
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$dataWrapper = $this->get($resource, $idOrFilters); |
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if ($dataWrapper === null) { |
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return null; |
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} |
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$results = $dataWrapper->getData()->getResults(); |
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return array_shift($results); |
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} |
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} |
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chadicus /
marvel-api-client
