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<?php |
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namespace anerg\OAuth2\Gateways; |
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use anerg\OAuth2\Connector\Gateway; |
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use anerg\OAuth2\Helper\Str; |
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class Facebook extends Gateway |
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{ |
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const API_BASE = 'https://graph.facebook.com/v3.1/'; |
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protected $AuthorizeURL = 'https://www.facebook.com/v3.1/dialog/oauth'; |
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protected $AccessTokenURL = 'https://graph.facebook.com/v3.1/oauth/access_token'; |
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/** |
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* 构造函数 |
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* |
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* @param array $config |
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*/ |
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public function __construct($config = null) |
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{ |
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parent::__construct($config); |
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$this->clientParams(); |
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} |
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/** |
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* 设置客户端请求的参数 |
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* |
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* @return void |
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*/ |
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private function clientParams() |
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{ |
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if (isset($this->config['access_token']) && !empty($this->config['access_token'])) { |
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$this->token['access_token'] = $this->config['access_token']; |
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} |
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} |
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/** |
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* 得到跳转地址 |
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*/ |
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public function getRedirectUrl() |
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{ |
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$params = [ |
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'response_type' => $this->config['response_type'], |
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'client_id' => $this->config['app_id'], |
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'redirect_uri' => $this->config['callback'], |
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'scope' => $this->config['scope'], |
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'state' => $this->config['state'] ?: Str::random(), |
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]; |
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return $this->AuthorizeURL . '?' . http_build_query($params); |
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} |
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/** |
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* 获取当前授权用户的openid标识 |
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*/ |
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public function openid() |
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{ |
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$userinfo = $this->userinfo(); |
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return $userinfo['openid']; |
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} |
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/** |
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* 获取格式化后的用户信息 |
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*/ |
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public function userinfo() |
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{ |
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$rsp = $this->userinfoRaw(); |
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$userinfo = [ |
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'openid' => $rsp['id'], |
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'channel' => 'facebook', |
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'nick' => $rsp['name'], |
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'gender' => $this->getGender($rsp), //不一定会返回 |
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'avatar' => $this->getAvatar($rsp), |
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]; |
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return $userinfo; |
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} |
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/** |
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* 获取原始接口返回的用户信息 |
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*/ |
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public function userinfoRaw() |
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{ |
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$this->getToken(); |
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$fields = isset($this->config['fields']) ? $this->config['fields'] : 'id,name,gender,picture.width(400)'; |
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return $this->call('me', ['access_token' => $this->token['access_token'], 'fields' => $fields], 'GET'); |
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} |
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/** |
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* 发起请求 |
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* |
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* @param string $api |
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* @param array $params |
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* @param string $method |
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* @return array |
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*/ |
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private function call($api, $params = [], $method = 'GET') |
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{ |
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$method = strtoupper($method); |
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$request = [ |
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'method' => $method, |
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'uri' => self::API_BASE . $api, |
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]; |
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$data = $this->$method($request['uri'], $params); |
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return json_decode($data, true); |
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} |
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/** |
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* Facebook的AccessToken请求参数 |
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* @return array |
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*/ |
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protected function accessTokenParams() |
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{ |
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$params = [ |
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'client_id' => $this->config['app_id'], |
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'client_secret' => $this->config['app_secret'], |
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'code' => isset($_GET['code']) ? $_GET['code'] : '', |
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'redirect_uri' => $this->config['callback'], |
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]; |
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return $params; |
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} |
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/** |
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* 解析access_token方法请求后的返回值 |
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* @param string $token 获取access_token的方法的返回值 |
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*/ |
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protected function parseToken($token) |
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{ |
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$token = json_decode($token, true); |
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if (isset($token['error'])) { |
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throw new \Exception($token['error']['message']); |
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} |
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return $token; |
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} |
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/** |
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* 格式化性别 |
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* |
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* @param array $rsp |
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* @return string |
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*/ |
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private function getGender($rsp) |
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{ |
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$gender = isset($rsp['gender']) ? $rsp['gender'] : null; |
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$return = 'n'; |
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switch ($gender) { |
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case 'male': |
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$return = 'm'; |
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break; |
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case 'female': |
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$return = 'f'; |
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break; |
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} |
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return $return; |
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} |
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/** |
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* 获取用户头像 |
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* |
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* @param array $rsp |
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* @return string |
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*/ |
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private function getAvatar($rsp) |
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{ |
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if (isset($rsp['picture']['data']['url'])) { |
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return $rsp['picture']['data']['url']; |
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} |
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return ''; |
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} |
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} |
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