using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace Numpy.Models

{

public class Shape

{

public int[] Dimensions { get; }

public Shape(params int[] shape)

{

this.Dimensions = shape;

}

public int this[int n] => Dimensions[n];

public static implicit operator Shape(ValueTuple<int> tuple) => new Shape(tuple.Item1);

public static implicit operator Shape(ValueTuple<int,int> tuple) => new Shape(tuple.Item1, tuple.Item2);

public static implicit operator Shape(ValueTuple<int, int,int> tuple) => new Shape(tuple.Item1, tuple.Item2,tuple.Item3);

public static implicit operator Shape(ValueTuple<int, int, int, int> tuple) => new Shape(tuple.Item1, tuple.Item2, tuple.Item3, tuple.Item4);

public static implicit operator Shape(ValueTuple<int, int, int, int, int> tuple) => new Shape(tuple.Item1, tuple.Item2, tuple.Item3, tuple.Item4, tuple.Item5);

#region Equality

public static bool operator ==(Shape a, Shape b)

{

if (b is null) return false;

return Enumerable.SequenceEqual(a.Dimensions, b?.Dimensions);

}

public static bool operator !=(Shape a, Shape b)

{

return !(a == b);

}

public override bool Equals(object obj)

{

if (obj.GetType() != typeof(Shape))

return false;

return Enumerable.SequenceEqual(Dimensions, ((Shape)obj).Dimensions);

}

public override int GetHashCode()

{

return (Dimensions??new int[0]).GetHashCode();

}

public override string ToString()

{

return $"({string.Join(", ", Dimensions ?? new int[0])})";

}

#endregion

}

}