<?php

  require_once __DIR__ . '/../3rdparty/Dropbox/autoload.php';

  
  OCP\JSON::checkAppEnabled('files_external');
  OCP\JSON::checkLoggedIn();
  OCP\JSON::callCheck();

  $l = OC_L10N::get('files_external');

  
  if (isset($_POST['app_key']) && isset($_POST['app_secret'])) {
  	$oauth = new Dropbox_OAuth_Curl($_POST['app_key'], $_POST['app_secret']);
  	if (isset($_POST['step'])) {
  		switch ($_POST['step']) {
  			case 1:
  				try {
  					if (isset($_POST['callback'])) {
  						$callback = $_POST['callback'];
  					} else {
  						$callback = null;
  					}
  					$token = $oauth->getRequestToken();
  					OCP\JSON::success(array('data' => array('url' => $oauth->getAuthorizeUrl($callback),
  															'request_token' => $token['token'],
  															'request_token_secret' => $token['token_secret'])));
  				} catch (Exception $exception) {
  					OCP\JSON::error(array('data' => array('message' =>

  						$l->t('Fetching request tokens failed. Verify that your Dropbox app key and secret are correct.'))

  						));
  				}
  				break;
  			case 2:
  				if (isset($_POST['request_token']) && isset($_POST['request_token_secret'])) {
  					try {
  						$oauth->setToken($_POST['request_token'], $_POST['request_token_secret']);
  						$token = $oauth->getAccessToken();
  						OCP\JSON::success(array('access_token' => $token['token'],
  												'access_token_secret' => $token['token_secret']));
  					} catch (Exception $exception) {
  						OCP\JSON::error(array('data' => array('message' =>

  							$l->t('Fetching access tokens failed. Verify that your Dropbox app key and secret are correct.'))

  							));
  					}
  				}
  				break;
  		}
  	}
  } else {

  	OCP\JSON::error(array('data' => array('message' => $l->t('Please provide a valid Dropbox app key and secret.'))));

  }