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PhutilTwitchFuture.php
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Mon, May 6, 23:19

PhutilTwitchFuture.php
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<?php
final class PhutilTwitchFuture extends FutureProxy {
private $future;
private $clientID;
private $accessToken;
private $action;
private $params;
private $method = 'GET';
public function __construct() {
parent::__construct(null);
}
public function setAccessToken($token) {
$this->accessToken = $token;
return $this;
}
public function setClientID($client_id) {
$this->clientID = $client_id;
return $this;
}
public function setRawTwitchQuery($action, array $params = array()) {
$this->action = $action;
$this->params = $params;
return $this;
}
public function setMethod($method) {
$this->method = $method;
return $this;
}
protected function getProxiedFuture() {
if (!$this->future) {
$params = $this->params;
if (!$this->action) {
throw new Exception(pht('You must %s!', 'setRawTwitchQuery()'));
}
if (!$this->accessToken) {
throw new Exception(pht('You must %s!', 'setAccessToken()'));
}
$uri = new PhutilURI('https://api.twitch.tv/');
$uri->setPath('/kraken/'.ltrim($this->action, '/'));
$uri->replaceQueryParam('oauth_token', $this->accessToken);
$future = new HTTPSFuture($uri);
$future->setData($this->params);
$future->setMethod($this->method);
// NOTE: This is how the Twitch API is versioned.
$future->addHeader('Accept', 'application/vnd.twitchtv.2+json');
// NOTE: This is required to avoid rate limiting.
$future->addHeader('Client-ID', $this->clientID);
$this->future = $future;
}
return $this->future;
}
protected function didReceiveResult($result) {
list($status, $body, $headers) = $result;
if ($status->isError()) {
throw $status;
}
$data = null;
try {
$data = phutil_json_decode($body);
} catch (PhutilJSONParserException $ex) {
throw new PhutilProxyException(
pht('Expected JSON response from Twitch.'),
$ex);
}
if (idx($data, 'error')) {
$error = $data['error'];
throw new Exception(pht('Received error from Twitch: %s', $error));
}
return $data;
}
}

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