<?php namespace NicoSt\GCalendar\Controllers;

use Backend\Classes\Controller;
use Input;
use Log;
use Lang;
use Redirect;

use NicoSt\GCalendar\Models\Settings;
use NicoSt\GCalendar\Classes\GoogleCalendarClient;


class GoogleCallback extends Controller {

    public function oauth2callback() {

        $error = Input::get('error');
        $code = Input::get('code');

        if (!empty($error)) {
            Log::error('G-Calendar: Error during authorization ['. $error .'].');
            die;
        }

        if (!empty($code)) {
            Log::info('G-Calendar: Successfully authorized. Authentication code ['. $code .'].');

            $class = new GoogleCalendarClient(false);
            $client = $class->getClient();

            $accessToken = $client->fetchAccessTokenWithAuthCode($code);
            $client->setAccessToken($accessToken);

            Log::info('G-Calendar: Set access-token ['. print_r($client->getAccessToken(), true) .'].');
            Settings::set('access_token', $client->getAccessToken());

            return Redirect::to('/backend/system/settings/update/nicost/gcalendar/settings');
        }else {
            Log::error('G-Calendar: Invalid callback request. Expected "code" or "error" param missing.');
        }
    }

}