Day30-用 LINEBot、Google Calendar、Dialogflow ES 做个开会机器人当结尾！

大家好～
今天是最後一天了，
来将这几天所学结合成一个小作品吧！

功能部分就是当使用者跟 LINEBot 说什麽时候要开会，
LINEBot 会回应一个 Google Meet 的会议连结。

功能满简单的，
所以我决定用 Dialogflow 这个架构。

LINEBot Channel 申请可以参考 Day12，
Dialogflow 与 LINEBot Channel 连动设定可以参考 Day26，
Dialogflow Intent 的训练也可以参考 Day26，
Google Calendar 会用 Oauth 的凭证，
可以参考 Day25。

底下就是程序的实作啦～

Route::post('/dialogflow', [DialogflowController::class, 'intent']);

开个 Webhook 给 Dialogflow。

GoogleMeetController

use Illuminate\Http\Request;
use Google\Client;
use Google\Service\Calendar;
use Google\Service\Calendar\Event;
use Google\Service\Calendar\EventDateTime;
use Google\Service\Calendar\ConferenceData;
use Google\Service\Calendar\ConferenceSolutionKey;
use Google\Service\Calendar\CreateConferenceRequest;

class GoogleMeetController extends Controller
{
    protected $client;
    protected $calendar;
    protected $calendarId;

    public function __construct()
    {
        $this->client = new Client();
        $this->client->setAuthConfig(env('OAUTH_CLIENT_CREDENTIALS_PATH'));
        $this->client->addScope(Calendar::CALENDAR_EVENTS);
        $tokenPath = env('OAUTH_TOKEN_JSON_PATH');
        $accessToken = json_decode(file_get_contents($tokenPath), true);
        $this->client->setAccessToken($accessToken);
        $this->calendar = new Calendar($this->client);
        $this->calendarId = env('GOOGLE_CALENDAR_ID');
    }

    public function create($request)
    {
        $calendarEvent = new Event();

        $conferenceSolutionKey = new ConferenceSolutionKey();
        $conferenceSolutionKey->setType('hangoutsMeet');

        $createConferenceRequest = new CreateConferenceRequest();
        $createConferenceRequest->setRequestId(md5('ironman2021' . time()));
        $createConferenceRequest->setConferenceSolutionKey($conferenceSolutionKey);

        $conferenceData = new ConferenceData();
        $conferenceData->setCreateRequest($createConferenceRequest);
        $calendarEvent->setConferenceData($conferenceData);

        $calendarEvent->setSummary($request['summary']);

        $startTime = new EventDateTime();
        $startTime->setDateTime($request['startTime']);
        $calendarEvent->setStart($startTime);

        $endTime = new EventDateTime();
        $endTime->setDateTime($request['endTime']);
        $calendarEvent->setEnd($endTime);

        $response = $this->calendar->events->insert(
            $this->calendarId,
            $calendarEvent,
            [
                'conferenceDataVersion' => 1
            ]
        );

        return $response->getHangoutLink();
    }
}

GoogleMeetController 会在指定时间建立一个 Google Calendar Event，
然後回传 Google Meet 连结。

env 的设定也是和 Day25 一样喔～

DialogflowController

use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Illuminate\Support\Facades\Log;
use App\Http\Controllers\GoogleMeetController;

class DialogflowController extends Controller
{
    public function intent(Request $request)
    {
        $queryText = $request->queryResult['queryText'];

        $datetime = $request->queryResult['outputContexts'][0]['parameters']['date-time'];

        $meetData['summary'] = "开会";

        switch ($datetime) {
            case is_string($datetime):
                $meetData['startTime'] = $datetime;
                $meetData['endTime'] = Carbon::parse($datetime)->addHour()->toRfc3339String();
                break;
            case is_array($datetime):
                if (isset($datetime['date_time'])) {
                    $startTime = $datetime['date_time'];
                    $meetData['startTime'] = $startTime;
                    $meetData['endTime'] = Carbon::parse($startTime)->addHour()->toRfc3339String();
                } elseif (isset($datetime['startDateTime'])) {
                    $startTime = $datetime['startDateTime'];
                    $endTime = $datetime['endDateTime'];
                    $meetData['startTime'] = $startTime;
                    $meetData['endTime'] = $endTime;
                } else {
                    $startTime = $datetime['startTime'];
                    $endTime = $datetime['endTime'];
                    $meetData['startTime'] = $startTime;
                    $meetData['endTime'] = $endTime;
                }
                break;
            default:
                return response('400', Response::HTTP_BAD_REQUEST);
        }

        $googleMeetController = new GoogleMeetController;
        $url = $googleMeetController->create($meetData);

        $jsonResponse = [
            "fulfillmentMessages" => [
                [
                    "text" => [
                        "text" => [
                            $url
                        ]
                    ]
                ]
            ]
        ];
        return $jsonResponse;
    }
}

DialogflowController 会将 Google Meet 连结传给 Dialogflow。

这样就差不多完成啦～
以下开始成果预览！