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| <?php | |
| /** | |
| * Class FacebookProvider | |
| * | |
| * @package Social\Providers | |
| * @author Nigel Hurnell | |
| * @version v 1.0.0 | |
| * @license BSD | |
| * @copyright Copyright (c) 2017, Nigel Hurnell | |
| */ | |
| namespace Social\Providers; | |
| use Social\Providers\AbstractProvider\AbstractProvider; | |
| use Zend\Http\Client; | |
| /** | |
| * Class FacebookProvider | |
| * Social Media OAuth2 provider for FACEBOOK | |
| * | |
| * @package Social\Providers | |
| * @author Nigel Hurnell | |
| * @version v 1.0.0 | |
| * @license BSD | |
| * @copyright Copyright (c) 2017, Nigel Hurnell | |
| */ | |
| class FacebookProvider extends AbstractProvider | |
| { | |
| /** | |
| * FACEBOOK's base authorisation URL | |
| * | |
| * @var string | |
| */ | |
| protected $baseAuthorisationUrl = 'https://www.facebook.com/v2.9/dialog/oauth'; | |
| /** | |
| * The URL that FACEBOOK requires to request an access token | |
| * | |
| * @var string | |
| */ | |
| protected $requestAccessTokenUrl = 'https://graph.facebook.com/v2.9/oauth/access_token'; | |
| /** | |
| * The URL that FACEBOOK requires to request the user's profile | |
| * @var type | |
| */ | |
| protected $requestUserProfileUrl = 'https://graph.facebook.com/me'; | |
| /** | |
| * Set the provider name | |
| */ | |
| protected function setProviderName() | |
| { | |
| $this->providerName = 'facebook'; | |
| } | |
| /** | |
| * Update authorisation parameters | |
| * just add scope and display keys in this case | |
| */ | |
| protected function updateAuthorisationParams() | |
| { | |
| $this->authorisationParams['scope'] = 'email'; | |
| $this->authorisationParams['display'] = 'page'; | |
| } | |
| /** | |
| * Update access parameters | |
| * nothing needs to be done in this case | |
| * | |
| * @param array $queryParams in this case not used | |
| * @return array (empty) | |
| */ | |
| protected function updateAccessParams($queryParams) | |
| { | |
| return []; | |
| } | |
| /** | |
| * Handle response after requesting access token from FACEBOOK | |
| * | |
| * @param Client $client Zend Client that makes the HTTP request | |
| * @param Response $response | |
| * @return array corresponding to the user | |
| * @throws \Exception | |
| */ | |
| protected function handleAccessTokenResponse(Client $client, $response) | |
| { | |
| $result = json_decode($response->getBody()); | |
| if (!isset($result->access_token)) { | |
| throw new \Exception('Facebook returned an error (1).'); | |
| } | |
| return $this->getUserProfile($client, $result->access_token); | |
| } | |
| /** | |
| * Make new request to FACEBOOK to get user profile | |
| * Using the access token that GOOGLE returned for previous request | |
| * | |
| * @param Client $client Zend Client that makes the HTTP request | |
| * @param string $token | |
| * @return array corresponding to the user | |
| */ | |
| public function getUserProfile(Client $client, $token) | |
| { | |
| $client->resetParameters(); | |
| $client->setUri($this->requestUserProfileUrl); | |
| $client->setMethod('GET'); | |
| $params = [ | |
| 'access_token' => $token, | |
| 'fields' => 'id,name,email' | |
| ]; | |
| $client->setParameterGet($params); | |
| $response = $client->send(); | |
| return $this->processUserProfile($response); | |
| } | |
| /** | |
| * Process the response that FACEBOOK returned to the getUserProfile request | |
| * | |
| * @param Response $response | |
| * @return array array containing user profile | |
| * @throws \Exception if the response does not contain user profile | |
| */ | |
| protected function processUserProfile($response) | |
| { | |
| $user = $this->checkUserProfile($response); | |
| $result = [ | |
| 'name' => $user->name, | |
| 'email' => $user->email, | |
| 'id' => $user->id, | |
| 'provider' => $this->providerName | |
| ]; | |
| return $result; | |
| } | |
| /** | |
| * CHeck that the returned response has the required parameters | |
| * | |
| * @param Zend\Http\Response $response | |
| * @return JSON object | |
| * @throws \Exception when returned object does not conform to requirements | |
| */ | |
| protected function checkUserProfile($response) | |
| { | |
| $user = json_decode($response->getBody()); | |
| $error = ''; | |
| switch (true) { | |
| case 200 != $response->getStatusCode(): | |
| $error = '"response was not OK"'; | |
| break; | |
| case (!isset($user->email)): | |
| $error = '"no email"'; | |
| break; | |
| case (!isset($user->name)): | |
| $error = '"no name"'; | |
| break; | |
| case (!isset($user->id)): | |
| $error = '"no id"'; | |
| break; | |
| } | |
| if ('' !== $error) { | |
| throw new \Exception('Facebook returned an error ' . $error . '.'); | |
| } | |
| return $user; | |
| } | |
| } |