namespace View_by_Distance.Shared.Models.Stateless.Methods;

internal abstract class Sorting
{

    internal static Models.Sorting Get(int faceDistancePermyriad, Models.FaceDistance faceDistanceEncoding, Models.FaceDistance faceDistanceLength)
    {
        Models.Sorting result;
        if (faceDistanceLength.Id is null)
            throw new NotSupportedException();
        if (faceDistanceLength.Length is null)
            throw new NotSupportedException();
        if (faceDistanceLength.WholePercentages is null)
            throw new NotSupportedException();
        TimeSpan timeSpan = new(faceDistanceLength.DateTimeOriginalThenMinimumDateTime.Ticks - faceDistanceEncoding.DateTimeOriginalThenMinimumDateTime.Ticks);
        bool older = timeSpan.TotalMilliseconds < 0;
        int daysDelta = (int)Math.Round(Math.Abs(timeSpan.TotalDays), 0);
        int distancePermyriad = (int)(faceDistanceLength.Length.Value * faceDistancePermyriad);
        bool canReMap = faceDistanceLength.MappingFromFilterPost?.CanReMap is not null && faceDistanceLength.MappingFromFilterPost.CanReMap.Value;
        result = new(canReMap, daysDelta, distancePermyriad, faceDistanceLength.Id.Value, older, faceDistanceLength.WholePercentages.Value);
        return result;
    }

}