using OpenTK.Mathematics;
using VoxelEngine.Core;
using VoxelEngine.Game;
using Xunit;

namespace VoxelEngine.Tests;

public class PlayerTests
{
    [Fact]
    public void ChunkPosition_Origin_IsZero()
    {
        var p = new Player(new Configuration(), new Vector3(0, 0, 0), aspectRatio: 1f);
        Assert.Equal(new Vector3i(0, 0, 0), p.ChunkPosition);
    }

    [Fact]
    public void ChunkPosition_PositiveCoords_FloorsDown()
    {
        var p = new Player(new Configuration(), new Vector3(17.5f, 32f, 8f), aspectRatio: 1f);
        Assert.Equal(new Vector3i(1, 2, 0), p.ChunkPosition);
    }

    [Fact]
    public void ChunkPosition_NegativeCoords_FloorsToNegativeInfinity()
    {
        var p = new Player(new Configuration(), new Vector3(-1f, -16f, -17f), aspectRatio: 1f);
        Assert.Equal(new Vector3i(-1, -1, -2), p.ChunkPosition);
    }

    [Fact]
    public void ChunkPosition_PositiveExactBoundary_IsNextChunk()
    {
        var p = new Player(new Configuration(), new Vector3(16f, 0f, 0f), aspectRatio: 1f);
        Assert.Equal(new Vector3i(1, 0, 0), p.ChunkPosition);
    }

    [Fact]
    public void Move_UpdatesPosition()
    {
        var p = new Player(new Configuration(), new Vector3(0, 0, 0), aspectRatio: 1f);
        p.Move(new Vector3(5, 0, 0));
        Assert.Equal(5f, p.Position.X);
    }

    [Fact]
    public void Constructor_AppliesFovFromConfiguration()
    {
        var cfg = new Configuration { Fov = 75f };
        var p = new Player(cfg, new Vector3(0, 0, 0), aspectRatio: 1.5f);
        Assert.Equal(75f, p.Camera.Fov);
    }
}