<?php namespace NicoSt\GCalendar\Classes;

use Google_Client;
use Google_Service_Calendar;
use Log;

use NicoSt\GCalendar\Models\Settings;

class GoogleCalendarClient {

    protected $client;

    public function __construct($tryRefreshToken = false) {

        $this->client = new Google_Client();
        $this->client->setApplicationName(Settings::get('application_name'));
        $this->client->setClientId(Settings::get('client_id'));
        $this->client->setClientSecret(Settings::get('client_secret'));

        $this->client->setAccessType('offline');
        $this->client->setRedirectUri(url('/gcalendar/oauth2callback'));
        $this->client->addScope([Google_Service_Calendar::CALENDAR_READONLY	, Google_Service_Calendar::CALENDAR_EVENTS_READONLY]);

        // Set access toke on client if exist.
        $accessToken = Settings::get('access_token', []);
        if (!empty($accessToken)) {
            $this->client->setAccessToken($accessToken);
        }

        // Ensure valid access token.
        if ($tryRefreshToken && $this->client->isAccessTokenExpired()) {

            if (!empty($this->client->getRefreshToken())) {
                $this->client->fetchAccessTokenWithRefreshToken($this->client->getRefreshToken());
                // Merge access token
                Settings::set('access_token', array_merge($accessToken, $this->client->getAccessToken()));
            } else {
                Log::warning('G-Calendar: No valid refresh token given.');
            }
        }
    }

    public function getClient() {
        return $this->client;
    }

    public function getService() {

        return new Google_Service_Calendar($this->client);
    }
}