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Viewing / Editing File: FacebookProvider.php

<?php

namespace Laravel\Socialite\Two;

use GuzzleHttp\RequestOptions;
use Illuminate\Support\Arr;

class FacebookProvider extends AbstractProvider implements ProviderInterface
{
    /**
     * The base Facebook Graph URL.
     *
     * @var string
     */
    protected $graphUrl = 'https://graph.facebook.com';

/**
     * The Graph API version for the request.
     *
     * @var string
     */
    protected $version = 'v3.3';

/**
     * The user fields being requested.
     *
     * @var array
     */
    protected $fields = ['name', 'email', 'gender', 'verified', 'link'];

/**
     * The scopes being requested.
     *
     * @var array
     */
    protected $scopes = ['email'];

/**
     * Display the dialog in a popup view.
     *
     * @var bool
     */
    protected $popup = false;

/**
     * Re-request a declined permission.
     *
     * @var bool
     */
    protected $reRequest = false;

/**
     * The access token that was last used to retrieve a user.
     *
     * @var string|null
     */
    protected $lastToken;

/**
     * {@inheritdoc}
     */
    protected function getAuthUrl($state)
    {
        return $this->buildAuthUrlFromBase('https://www.facebook.com/'.$this->version.'/dialog/oauth', $state);
    }

/**
     * {@inheritdoc}
     */
    protected function getTokenUrl()
    {
        return $this->graphUrl.'/'.$this->version.'/oauth/access_token';
    }

/**
     * {@inheritdoc}
     */
    public function getAccessTokenResponse($code)
    {
        $response = $this->getHttpClient()->post($this->getTokenUrl(), [
            RequestOptions::FORM_PARAMS => $this->getTokenFields($code),
        ]);

$data = json_decode($response->getBody(), true);

return Arr::add($data, 'expires_in', Arr::pull($data, 'expires'));
    }

/**
     * {@inheritdoc}
     */
    protected function getUserByToken($token)
    {
        $this->lastToken = $token;

$params = [
            'access_token' => $token,
            'fields' => implode(',', $this->fields),
        ];

if (! empty($this->clientSecret)) {
            $params['appsecret_proof'] = hash_hmac('sha256', $token, $this->clientSecret);
        }

$response = $this->getHttpClient()->get($this->graphUrl.'/'.$this->version.'/me', [
            RequestOptions::HEADERS => [
                'Accept' => 'application/json',
            ],
            RequestOptions::QUERY => $params,
        ]);

return json_decode($response->getBody(), true);
    }

/**
     * {@inheritdoc}
     */
    protected function mapUserToObject(array $user)
    {
        $avatarUrl = $this->graphUrl.'/'.$this->version.'/'.$user['id'].'/picture';

return (new User)->setRaw($user)->map([
            'id' => $user['id'],
            'nickname' => null,
            'name' => $user['name'] ?? null,
            'email' => $user['email'] ?? null,
            'avatar' => $avatarUrl.'?type=normal',
            'avatar_original' => $avatarUrl.'?width=1920',
            'profileUrl' => $user['link'] ?? null,
        ]);
    }

/**
     * {@inheritdoc}
     */
    protected function getCodeFields($state = null)
    {
        $fields = parent::getCodeFields($state);

if ($this->popup) {
            $fields['display'] = 'popup';
        }

if ($this->reRequest) {
            $fields['auth_type'] = 'rerequest';
        }

return $fields;
    }

/**
     * Set the user fields to request from Facebook.
     *
     * @param  array  $fields
     * @return $this
     */
    public function fields(array $fields)
    {
        $this->fields = $fields;

return $this;
    }

/**
     * Set the dialog to be displayed as a popup.
     *
     * @return $this
     */
    public function asPopup()
    {
        $this->popup = true;

return $this;
    }

/**
     * Re-request permissions which were previously declined.
     *
     * @return $this
     */
    public function reRequest()
    {
        $this->reRequest = true;

return $this;
    }

/**
     * Get the last access token used.
     *
     * @return string|null
     */
    public function lastToken()
    {
        return $this->lastToken;
    }

/**
     * Specify which graph version should be used.
     *
     * @param  string  $version
     * @return $this
     */
    public function usingGraphVersion(string $version)
    {
        $this->version = $version;

return $this;
    }
}

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