<?php

namespace Grocy\Controllers;

use Eluceo\iCal\Domain\Entity\Calendar;
use Eluceo\iCal\Domain\Entity\Event;
use Eluceo\iCal\Domain\ValueObject\Date;
use Eluceo\iCal\Domain\ValueObject\DateTime;
use Eluceo\iCal\Domain\ValueObject\SingleDay;
use Eluceo\iCal\Domain\ValueObject\TimeSpan;
use Eluceo\iCal\Presentation\Factory\CalendarFactory;

class CalendarApiController extends BaseApiController
{
	public function Ical(\Psr\Http\Message\ServerRequestInterface $request, \Psr\Http\Message\ResponseInterface $response, array $args)
	{
		try
		{
			$events = $this->getCalendarService()->GetEvents();

			$vCalendar = new Calendar();
			foreach ($events as $event)
			{
				$description = '';
				if (isset($event['description']))
				{
					$description = $event['description'];
				}

				if ($event['date_format'] === 'date' || (isset($event['allDay']) && $event['allDay']))
				{
					// All-day event
					$date = new Date(\DateTimeImmutable::createFromFormat('Y-m-d', $event['start']));
					$vEventOccurrence = new SingleDay($date);
				}
				else
				{
					// Time-point event
					$start = new DateTime(\DateTimeImmutable::createFromFormat('Y-m-d H:i:s', $event['start']), false);
					$end = new DateTime(\DateTimeImmutable::createFromFormat('Y-m-d H:i:s', $event['start']), false);
					$vEventOccurrence = new TimeSpan($start, $end);
				}

				$vEvent = new Event();
				$vEvent->setOccurrence($vEventOccurrence)
					->setSummary($event['title'])
					->setDescription($description);

				$vCalendar->addEvent($vEvent);
			}

			$response->write((new CalendarFactory())->createCalendar($vCalendar));
			$response = $response->withHeader('Content-Type', 'text/calendar; charset=utf-8');
			return $response->withHeader('Content-Disposition', 'attachment; filename="grocy.ics"');
		}
		catch (\Exception $ex)
		{
			return $this->GenericErrorResponse($response, $ex->getMessage());
		}
	}

	public function IcalSharingLink(\Psr\Http\Message\ServerRequestInterface $request, \Psr\Http\Message\ResponseInterface $response, array $args)
	{
		try
		{
			return $this->ApiResponse($response, [
				'url' => $this->AppContainer->get('UrlManager')->ConstructUrl('/api/calendar/ical?secret=' . $this->getApiKeyService()->GetOrCreateApiKey(\Grocy\Services\ApiKeyService::API_KEY_TYPE_SPECIAL_PURPOSE_CALENDAR_ICAL))
			]);
		}
		catch (\Exception $ex)
		{
			return $this->GenericErrorResponse($response, $ex->getMessage());
		}
	}

	public function __construct(\DI\Container $container)
	{
		parent::__construct($container);
	}
}