<?php

declare(strict_types=1);

namespace OCA\NuqloudMasterCalendar\Calendar;

use OCA\DAV\CalDAV\CachedSubscriptionProvider;
use OCA\DAV\CalDAV\CalendarProvider as DavCalendarProvider;
use OCP\Calendar\ICalendar;
use OCP\Calendar\ICalendarIsEnabled;
use OCP\Calendar\ICalendarIsWritable;

class SourceCalendarService {
	public const MODE_ALL = 'all';
	public const MODE_EDITABLE = 'editable';

	public function __construct(
		private DavCalendarProvider $davCalendarProvider,
		private CachedSubscriptionProvider $subscriptionProvider,
	) {
	}

	/** @return ICalendar[] */
	public function getCalendars(string $principalUri, string $mode): array {
		$calendars = array_merge(
			$this->davCalendarProvider->getCalendars($principalUri),
			$this->subscriptionProvider->getCalendars($principalUri),
		);

		return array_values(array_filter($calendars, function (ICalendar $calendar) use ($mode): bool {
			if ($calendar instanceof ICalendarIsEnabled && !$calendar->isEnabled()) {
				return false;
			}

			return $mode !== self::MODE_EDITABLE
				|| ($calendar instanceof ICalendarIsWritable && $calendar->isWritable());
		}));
	}

	public function identifier(ICalendar $calendar): string {
		return get_class($calendar) . ':' . $calendar->getKey();
	}
}