using OneClickRun.Core.Logic;
using Xunit;

namespace OneClickRun.Core.Tests;

public class WheelMathTests
{
    [Theory]
    [InlineData(0, 0)]
    [InlineData(44.9, 0)]
    [InlineData(45, 1)]
    [InlineData(90, 2)]
    [InlineData(359.9, 7)]
    [InlineData(-45, 7)]
    [InlineData(360, 0)]
    public void GetSectorIndex_MapsAngles(double angle, int expected)
    {
        Assert.Equal(expected, WheelMath.GetSectorIndex(8, angle));
    }

    [Fact]
    public void GetSectorIndex_SingleSector_AlwaysZero()
    {
        Assert.Equal(0, WheelMath.GetSectorIndex(1, 123.4));
    }

    [Fact]
    public void GetSectorIndex_NoSectors_ReturnsMinusOne()
    {
        Assert.Equal(-1, WheelMath.GetSectorIndex(0, 10));
    }

    [Theory]
    [InlineData(0, -1, 0)]
    [InlineData(1, 0, 90)]
    [InlineData(0, 1, 180)]
    [InlineData(-1, 0, 270)]
    public void AngleFromVector_CardinalDirections(double dx, double dy, double expected)
    {
        Assert.Equal(expected, WheelMath.AngleFromVector(dx, dy), 3);
    }

    [Fact]
    public void PolarPoint_Top()
    {
        var (x, y) = WheelMath.PolarPoint(100, 100, 50, 0);
        Assert.Equal(100, x, 3);
        Assert.Equal(50, y, 3);
    }

    [Fact]
    public void PolarPoint_Right()
    {
        var (x, y) = WheelMath.PolarPoint(100, 100, 50, 90);
        Assert.Equal(150, x, 3);
        Assert.Equal(100, y, 3);
    }

    [Fact]
    public void TryGetSwipeIndex_DeadZone_ReturnsFalse()
    {
        Assert.False(WheelMath.TryGetSwipeIndex(8, 5, 0, 10, out _));
    }

    [Fact]
    public void TryGetSwipeIndex_NoCommands_ReturnsFalse()
    {
        Assert.False(WheelMath.TryGetSwipeIndex(0, 100, 0, 10, out _));
    }

    [Theory]
    [InlineData(0, -100, 0)]
    [InlineData(100, 0, 2)]
    [InlineData(0, 100, 4)]
    [InlineData(-100, 0, 6)]
    public void TryGetSwipeIndex_Directions(double dx, double dy, int expected)
    {
        Assert.True(WheelMath.TryGetSwipeIndex(8, dx, dy, 10, out int index));
        Assert.Equal(expected, index);
    }
}