/**
* Fetch and store a new App access_token from Facebook
*
* @return string the access_token
* @throws FacebookAuthException if our request was denied
* @throws FacebookApiException if some unexpected response was received from Facebook
*/
protected function fetchAccessToken()
{
$request = new GraphRequest();
$client = $request->getClient();
$request = $this->buildFacebookHttpRequest($client);
$response = $request->send();
if ($response->getStatusCode() == 200) {
parse_str($response->getBody(true), $arr);
if (isset($arr['access_token'])) {
$this->session_cached = new \DateTime();
$this->access_token = (string) $arr['access_token'];
} else {
throw new FacebookApiException('Unexpected Facebook error');
}
} else {
throw new FacebookAuthException(sprintf('Facebook error: %s', $response->getBody(true)));
}
}
/**
* Prepare a Graph HTTP request
*
* @return \Guzzle\Http\Message\RequestInterface
*/
public function getGraphHttpRequest()
{
$graph_request = new GraphRequest();
$client = $graph_request->getClient();
$request = $this->buildFacebookHttpRequest($client);
return $request;
}
/**
* Load the node and return a populated object
*
* @param string $id unique node id
* @param array $fields (optional) array of field names to fetch
*
* @return $this
* @throws FacebookInvalidNodeException
*/
public function load($id, $fields = array())
{
$request = new GraphRequest();
$request->setNode($id);
if (count($fields) > 0) {
$request->setFields($fields);
}
$response = $request->send();
$arr = json_decode($response->getBody(true), true);
if (is_array($arr)) {
foreach ($arr as $key => $val) {
$this->setFieldValue($key, $val);
}
$this->is_new = false;
$this->is_modified = false;
return $this;
}
throw new FacebookInvalidNodeException(sprintf('Id %s not valid', $id));
}
/**
* Load the subscriptions for this Application from Facebook Graph
*
* @returns void
* @throws \Graph\Exception\InvalidArgumentException
*/
public function fetchSubscriptions()
{
if ($this->getFieldValue('id') === null) {
throw new InvalidArgumentException('Application ID not set');
}
$request = new GraphRequest();
$request->setAccessToken($this->getAccessToken());
$request->setNode($this->getFieldValue('id'));
$request->setPath('subscriptions');
$response = $request->send();
$json = $response->getBody(true);
if ($arr = json_decode($json, true)) {
if (isset($arr['data']) && !empty($arr['data'])) {
$this->setSubscriptions($response->getBody(true));
}
}
}
/**
* Send a notification to a Player using their Facebook userId
*
* @return boolean true if the message was successfully sent
* @throws FacebookInsufficientPermissions
* thrown if the facebook user has not given permission (or has revoked permission) to our app
* @throws FacebookAuthException
* @throws FacebookApiException
* @throws FacebookConnectionException
* thrown if we are unable to connect to the Facebook HTTP Api
*/
public function send()
{
$this->isValid();
$href = $this->buildHrefString();
$request = new GraphRequest();
$request->setNode($this->facebook_user_id)->setHttpMethod('POST')->setPath('notifications')->setAccessToken($this->access_token)->setQueryParameters(array('template' => $this->message, 'href' => $href));
$response = $request->send();
return $response->getBody();
}