<?php
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/*
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* This file is part of the overtrue/socialite.
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*
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* (c) overtrue <i@overtrue.me>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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namespace Overtrue\Socialite\Providers;
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use Overtrue\Socialite\AccessTokenInterface;
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use Overtrue\Socialite\ProviderInterface;
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use Overtrue\Socialite\User;
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/**
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* Class FacebookProvider.
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*
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* @see https://developers.facebook.com/docs/graph-api [Facebook - Graph API]
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*/
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class FacebookProvider extends AbstractProvider implements ProviderInterface
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{
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/**
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* The base Facebook Graph URL.
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*
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* @var string
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*/
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protected $graphUrl = 'https://graph.facebook.com';
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/**
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* The Graph API version for the request.
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*
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* @var string
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*/
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protected $version = 'v3.3';
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/**
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* The user fields being requested.
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*
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* @var array
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*/
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protected $fields = ['first_name', 'last_name', 'email', 'gender', 'verified'];
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/**
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* The scopes being requested.
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*
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* @var array
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*/
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protected $scopes = ['email'];
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/**
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* Display the dialog in a popup view.
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*
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* @var bool
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*/
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protected $popup = false;
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/**
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* {@inheritdoc}
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*/
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protected function getAuthUrl($state)
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{
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return $this->buildAuthUrlFromBase('https://www.facebook.com/'.$this->version.'/dialog/oauth', $state);
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}
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/**
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* {@inheritdoc}
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*/
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protected function getTokenUrl()
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{
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return $this->graphUrl.'/oauth/access_token';
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}
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/**
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* Get the access token for the given code.
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*
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* @param string $code
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*
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* @return \Overtrue\Socialite\AccessToken
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*/
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public function getAccessToken($code)
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{
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$response = $this->getHttpClient()->get($this->getTokenUrl(), [
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'query' => $this->getTokenFields($code),
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]);
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return $this->parseAccessToken($response->getBody());
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}
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/**
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* {@inheritdoc}
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*/
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protected function getUserByToken(AccessTokenInterface $token)
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{
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$appSecretProof = hash_hmac('sha256', $token->getToken(), $this->getConfig()->get('client_secret'));
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$response = $this->getHttpClient()->get($this->graphUrl.'/'.$this->version.'/me?access_token='.$token.'&appsecret_proof='.$appSecretProof.'&fields='.implode(',', $this->fields), [
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'headers' => [
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'Accept' => 'application/json',
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],
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]);
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return json_decode($response->getBody(), true);
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}
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/**
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* {@inheritdoc}
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*/
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protected function mapUserToObject(array $user)
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{
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$userId = $this->arrayItem($user, 'id');
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$avatarUrl = $this->graphUrl.'/'.$this->version.'/'.$userId.'/picture';
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$firstName = $this->arrayItem($user, 'first_name');
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$lastName = $this->arrayItem($user, 'last_name');
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return new User([
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'id' => $this->arrayItem($user, 'id'),
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'nickname' => null,
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'name' => $firstName.' '.$lastName,
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'email' => $this->arrayItem($user, 'email'),
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'avatar' => $userId ? $avatarUrl.'?type=normal' : null,
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'avatar_original' => $userId ? $avatarUrl.'?width=1920' : null,
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]);
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}
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/**
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* {@inheritdoc}
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*/
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protected function getCodeFields($state = null)
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{
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$fields = parent::getCodeFields($state);
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if ($this->popup) {
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$fields['display'] = 'popup';
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}
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return $fields;
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}
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/**
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* Set the user fields to request from Facebook.
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*
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* @param array $fields
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*
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* @return $this
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*/
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public function fields(array $fields)
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{
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$this->fields = $fields;
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return $this;
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}
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/**
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* Set the dialog to be displayed as a popup.
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*
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* @return $this
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*/
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public function asPopup()
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{
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$this->popup = true;
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return $this;
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}
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}
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