using System.Linq;
using System.Utility;
using Chernobyl.Extensions;
using Chernobyl.Mathematics.Geometry;
using NUnit.Framework;

namespace Chernobyl.Generation.Test
{
    [TestFixture, Description("Tests verifying that features can be implemented using Chernobyl.Generation.")]
    public class FeatureTests
    {
        [Test, Description("Create a conflicted pattern")]
        public void CreateConflictedPattern()
        {
            var row = Func.StaticFactory(0)
                .AddBeat(3, () => 1)
                .AddRepeater(9)
                .Invoke()
                .ToArray();

            row.IsEqualTo(new [] { 0, 0, 1, 0, 0, 1, 0, 0, 1 }, "row");
        }

        [Test, Description("Create a pattern conflicted using another conflicted pattern")]
        public void CreateMultipleConflictedPatterns()
        {
            var beatConflicter = Func.StaticFactory(1).AddBeat(2, () => 2);

            var row = Func.StaticFactory(0)
                .AddBeat(3, beatConflicter)
                .AddRepeater(9)
                .Invoke()
                .ToArray();

            row.IsEqualTo(new[] { 0, 0, 1, 0, 0, 2, 0, 0, 1 }, "row");
        }

        [Test, Description("Create a square pattern on the bottom left of a background")]
        public void CreateBottomLeftSquareOnBackground()
        {
            var data2D = Func.StaticFactory(1)
                .To2D()
                .Replace(Plane.Predicate.Square((0, .8), .3, .3), pos => 2)
                .To1D(6, 6)
                .ToArray();

            data2D.IsEqualTo(new[]
            {
                2, 2, 1, 1, 1, 1,
                2, 2, 1, 1, 1, 1,
                1, 1, 1, 1, 1, 1,
                1, 1, 1, 1, 1, 1,
                1, 1, 1, 1, 1, 1,
                1, 1, 1, 1, 1, 1,
            }, nameof(data2D));
        }


        [Test, Description("Create a square pattern on the center of a background")]
        public void CreateCenterSquareOnBackground()
        {
            var data2D = Func.StaticFactory(1)
                .To2D()
                .Replace(Plane.Predicate.Square((.4, .4), .3, .3), pos => 2)
                .To1D(6, 6)
                .ToArray();

            data2D.IsEqualTo(new []
            {
                1, 1, 1, 1, 1, 1,
                1, 1, 1, 1, 1, 1,
                1, 1, 2, 2, 1, 1,
                1, 1, 2, 2, 1, 1,
                1, 1, 1, 1, 1, 1,
                1, 1, 1, 1, 1, 1,
            }, nameof(data2D));
        }
    }
}