public async Task UpdateActivity(UpdateActivityInput input)
{
var currentUserId = GetCurrentUserId();
var activity = await _activityManager.GetAsync(input.Id);
var location = input.LocationId.HasValue ? await _locationManager.GetLocationAsync(input.LocationId.Value) : null;
var tags = await _tagManager.GetTags(input.TagTexts);
_activityManager.EditActivity(activity, input.Name, input.StartTime, input.EndTime, location, tags, currentUserId);
_activityManager.EditDescriptions(activity, input.DescriptionIds, currentUserId);
}