using KeyOverlay.Core;
using Xunit;

namespace KeyOverlay.Core.Tests;

public class KeycodesTests
{
    [Fact]
    public void Letter_IsUppercaseWithBaseKeycode()
    {
        var d = Keycodes.Describe("KC_A");
        Assert.Equal("A", d.Main);
        Assert.Equal("KC_A", d.BaseKeycode);
    }

    [Fact]
    public void ShortQmkAlias_MatchesLongVialName()
    {
        Assert.Equal(Keycodes.Describe("KC_BSPACE").Main, Keycodes.Describe("KC_BSPC").Main);
        Assert.Equal("KC_BSPACE", Keycodes.Describe("KC_BSPC").BaseKeycode);
    }

    [Fact]
    public void ShiftWrapper_ShowsShiftedSymbol()
    {
        var d = Keycodes.Describe("LSFT(KC_1)");
        Assert.Equal("!", d.Main);
        Assert.True(d.RequiresShift);
        Assert.Equal("KC_1", d.BaseKeycode);
    }

    [Theory]
    [InlineData("LSFT(KC_MINUS)", "_")]
    [InlineData("LSFT(KC_BSLASH)", "|")]
    [InlineData("LSFT(KC_GRAVE)", "~")]
    [InlineData("LSFT(KC_QUOTE)", "\"")]
    public void ShiftWrapper_Symbols(string code, string expected) =>
        Assert.Equal(expected, Keycodes.Describe(code).Main);

    [Fact]
    public void CtrlWrapper_ShowsPrefix()
    {
        var d = Keycodes.Describe("LCTL(KC_C)");
        Assert.Equal("Ctrl+C", d.Main);
        Assert.False(d.RequiresShift);
    }

    [Theory]
    [InlineData("MO(2)", "MO 2")]
    [InlineData("TG(1)", "TG 1")]
    [InlineData("TO(0)", "TO 0")]
    public void LayerSwitch_IsFlagged(string code, string main)
    {
        var d = Keycodes.Describe(code);
        Assert.Equal(main, d.Main);
        Assert.True(d.IsLayerSwitch);
    }

    [Fact]
    public void LayerTap_ShowsTapKeyAndLayer()
    {
        var d = Keycodes.Describe("LT(1, KC_SPACE)");
        Assert.Equal("Space", d.Main);
        Assert.Equal("L1", d.Sub);
        Assert.Equal("KC_SPACE", d.BaseKeycode);
    }

    [Theory]
    [InlineData("LCTL_T(KC_A)")]
    [InlineData("MT(MOD_LCTL, KC_A)")]
    public void ModTap_ShowsTapKeyAndModifier(string code)
    {
        var d = Keycodes.Describe(code);
        Assert.Equal("A", d.Main);
        Assert.Equal("Ctrl", d.Sub);
        Assert.Equal("KC_A", d.BaseKeycode);
    }

    [Theory]
    [InlineData("KC_TRNS")]
    [InlineData("KC_TRANSPARENT")]
    public void Transparent_IsFlagged(string code) =>
        Assert.True(Keycodes.Describe(code).IsTransparent);

    [Fact]
    public void No_IsEmpty() => Assert.True(Keycodes.Describe("KC_NO").IsEmpty);

    [Fact]
    public void UnknownKeycode_FallsBackToTrimmedName()
    {
        var d = Keycodes.Describe("QK_BOOT");
        Assert.Equal("QK_BOOT", d.Main);
        Assert.Null(d.BaseKeycode);
    }

    [Fact]
    public void Canonicalize_ResolvesAliases()
    {
        Assert.Equal("KC_ESCAPE", Keycodes.Canonicalize("KC_ESC"));
        Assert.Equal("KC_LSHIFT", Keycodes.Canonicalize("KC_LSFT"));
    }
}