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<?php
/**
 *
 * This file is part of the phpBB Forum Software package.
 *
 * @copyright (c) phpBB Limited <https://www.phpbb.com>
 * @license GNU General Public License, version 2 (GPL-2.0)
 *
 * For full copyright and license information, please see
 * the docs/CREDITS.txt file.
 *
 */
namespace phpbb\auth\provider\oauth\service;
/**
 * Facebook OAuth service
 */
class facebook extends base
{
    /** @var \phpbb\config\config */
    protected $config;
    /** @var \phpbb\request\request_interface */
    protected $request;
    /**
     * Constructor.
     *
     * @param \phpbb\config\config                $config        Config object
     * @param \phpbb\request\request_interface    $request    Request object
     */
    public function __construct(\phpbb\config\config $config, \phpbb\request\request_interface $request)
    {
        $this->config    = $config;
        $this->request    = $request;
    }
    /**
     * {@inheritdoc}
     */
    public function get_service_credentials()
    {
        return [
            'key'        => $this->config['auth_oauth_facebook_key'],
            'secret'    => $this->config['auth_oauth_facebook_secret'],
        ];
    }
    /**
     * {@inheritdoc}
     */
    public function perform_auth_login()
    {
        if (!($this->service_provider instanceof \OAuth\OAuth2\Service\Facebook))
        {
            throw new exception('AUTH_PROVIDER_OAUTH_ERROR_INVALID_SERVICE_TYPE');
        }
        try
        {
            // This was a callback request, get the token
            $this->service_provider->requestAccessToken($this->request->variable('code', ''));
        }
        catch (\OAuth\Common\Http\Exception\TokenResponseException $e)
        {
            throw new exception('AUTH_PROVIDER_OAUTH_ERROR_REQUEST');
        }
        try
        {
            // Send a request with it
            $result = (array) json_decode($this->service_provider->request('/me'), true);
        }
        catch (\OAuth\Common\Exception\Exception $e)
        {
            throw new exception('AUTH_PROVIDER_OAUTH_ERROR_REQUEST');
        }
        // Return the unique identifier
        return $result['id'];
    }
    /**
     * {@inheritdoc}
     */
    public function perform_token_auth()
    {
        if (!($this->service_provider instanceof \OAuth\OAuth2\Service\Facebook))
        {
            throw new exception('AUTH_PROVIDER_OAUTH_ERROR_INVALID_SERVICE_TYPE');
        }
        try
        {
            // Send a request with it
            $result = (array) json_decode($this->service_provider->request('/me'), true);
        }
        catch (\OAuth\Common\Exception\Exception $e)
        {
            throw new exception('AUTH_PROVIDER_OAUTH_ERROR_REQUEST');
        }
        // Return the unique identifier
        return $result['id'];
    }
}