using System.Numerics;
using Godosa.Core.Input;
using Xunit;

namespace Godosa.Core.Tests.Input;

public class GamepadScriptTests
{
    [Theory]
    [InlineData("PadA", PadButtons.A)]
    [InlineData("PadB", PadButtons.B)]
    [InlineData("PadX", PadButtons.X)]
    [InlineData("PadY", PadButtons.Y)]
    [InlineData("PadBack", PadButtons.Back)]
    [InlineData("PadStart", PadButtons.Start)]
    [InlineData("PadUp", PadButtons.DpadUp)]
    [InlineData("PadDown", PadButtons.DpadDown)]
    [InlineData("PadLeft", PadButtons.DpadLeft)]
    [InlineData("PadRight", PadButtons.DpadRight)]
    [InlineData("PadLB", PadButtons.LeftShoulder)]
    [InlineData("PadRB", PadButtons.RightShoulder)]
    public void Button_DownHolds_UpReleases(string name, PadButtons button)
    {
        var down = GamepadScript.Apply(default, name, true)!.Value;
        Assert.Equal(button, down.Buttons);
        Assert.True(down.Held(button));
        Assert.Equal(PadButtons.None, GamepadScript.Apply(down, name, false)!.Value.Buttons);
    }

    [Fact]
    public void Button_LeavesOtherButtonsAndSticksAlone()
    {
        var start = new GamepadState(new Vector2(0.5f, 0f), Vector2.Zero, 0f, 0f, PadButtons.B);
        var next = GamepadScript.Apply(start, "PadA", true)!.Value;
        Assert.Equal(PadButtons.A | PadButtons.B, next.Buttons);
        Assert.Equal(new Vector2(0.5f, 0f), next.LeftStick);
        Assert.Equal(PadButtons.A, GamepadScript.Apply(next, "PadB", false)!.Value.Buttons);
    }

    [Fact]
    public void Triggers_GoFullOnAndOff()
    {
        var lt = GamepadScript.Apply(default, "PadLT", true)!.Value;
        Assert.Equal(1f, lt.LeftTrigger);
        Assert.Equal(0f, lt.RightTrigger);
        Assert.Equal(0f, GamepadScript.Apply(lt, "PadLT", false)!.Value.LeftTrigger);
        Assert.Equal(1f, GamepadScript.Apply(default, "PadRT", true)!.Value.RightTrigger);
    }

    [Fact]
    public void Names_AreCaseInsensitive_UnknownIsNull()
    {
        Assert.True(GamepadScript.Apply(default, "padstart", true)!.Value.Held(PadButtons.Start));
        Assert.Null(GamepadScript.Apply(default, "PadZ", true));
    }
}