using System.Numerics;
using Skeleton.Algebra.DimensionProviders;
using Skeleton.Utils.Helpers;

namespace Skeleton.Samples;
using C44 = Algebra.CategoryOf<IDim4>.OnField<Complex>.FMatrix;
/// <summary>
/// </summary>
public static class C44Samples
{
    /// <summary>
    /// </summary>
    /// <param name="a"></param>
    /// <returns></returns>
    public static IEnumerable<C44> C44AnySamples(this IEnumerable<double> a)
    {
        (Complex, Complex, Complex, Complex)[] w = a
            .RISamples()
            .ShuffleZip3()
            .ToArray();
        foreach (((Complex, Complex, Complex, Complex), (Complex, Complex, Complex, Complex), (Complex, Complex, Complex
                 , Complex), (Complex, Complex, Complex, Complex)) info in w.ShuffleZip3())
            yield return new C44(
                info.Item1.Item1, info.Item1.Item2, info.Item1.Item3, info.Item1.Item4,
                info.Item2.Item1, info.Item2.Item2, info.Item2.Item3, info.Item2.Item4,
                info.Item3.Item1, info.Item3.Item2, info.Item3.Item3, info.Item3.Item4,
                info.Item4.Item1, info.Item4.Item2, info.Item4.Item3, info.Item4.Item4
            );
    }

    /// <summary>
    /// </summary>
    /// <param name="a"></param>
    /// <returns></returns>
    public static IEnumerable<C44> C44InvertibleSamples(this IEnumerable<double> a)
    {
        foreach (C44 m in a.C44AnySamples())
            if (m.Det().Magnitude > 0.2d)
                yield return m;
    }
    
}