<?php

namespace Spatie\GoogleCalendar;

use Carbon\Carbon;
use Carbon\CarbonInterface;
use DateTime;
use Google_Service_Calendar;
use Google_Service_Calendar_Event;
use Google_Service_Calendar_Events;

class GoogleCalendar
{
    /** @var \Google_Service_Calendar */
    protected $calendarService;

    /** @var string */
    protected $calendarId;

    public function __construct(Google_Service_Calendar $calendarService, string $calendarId)
    {
        $this->calendarService = $calendarService;

        $this->calendarId = $calendarId;
    }

    public function getCalendarId(): string
    {
        return $this->calendarId;
    }

    /*
     * @link https://developers.google.com/google-apps/calendar/v3/reference/events/list
     */
    public function listEvents(?CarbonInterface $startDateTime = null, ?CarbonInterface $endDateTime = null, array $queryParameters = []): Google_Service_Calendar_Events
    {
        $parameters = [
            'singleEvents' => true,
            'orderBy' => 'startTime',
        ];

        if (is_null($startDateTime)) {
            $startDateTime = Carbon::now()->startOfDay();
        }

        $parameters['timeMin'] = $startDateTime->format(DateTime::RFC3339);

        if (is_null($endDateTime)) {
            $endDateTime = Carbon::now()->addYear()->endOfDay();
        }
        $parameters['timeMax'] = $endDateTime->format(DateTime::RFC3339);

        $parameters = array_merge($parameters, $queryParameters);

        return $this
            ->calendarService
            ->events
            ->listEvents($this->calendarId, $parameters);
    }

    public function getEvent(string $eventId): Google_Service_Calendar_Event
    {
        return $this->calendarService->events->get($this->calendarId, $eventId);
    }

    /*
     * @link https://developers.google.com/google-apps/calendar/v3/reference/events/insert
     */
    public function insertEvent($event, $optParams = []): Google_Service_Calendar_Event
    {
        if ($event instanceof Event) {
            $event = $event->googleEvent;
        }

        return $this->calendarService->events->insert($this->calendarId, $event, $optParams);
    }

    /*
    * @link https://developers.google.com/calendar/v3/reference/events/quickAdd
    */
    public function insertEventFromText(string $event): Google_Service_Calendar_Event
    {
        return $this->calendarService->events->quickAdd($this->calendarId, $event);
    }

    public function updateEvent($event, $optParams = []): Google_Service_Calendar_Event
    {
        if ($event instanceof Event) {
            $event = $event->googleEvent;
        }

        return $this->calendarService->events->update($this->calendarId, $event->id, $event, $optParams);
    }

    public function deleteEvent($eventId, $optParams = [])
    {
        if ($eventId instanceof Event) {
            $eventId = $eventId->id;
        }

        $this->calendarService->events->delete($this->calendarId, $eventId, $optParams);
    }

    public function getService(): Google_Service_Calendar
    {
        return $this->calendarService;
    }
}