using AcDream.App.Rendering;
using AcDream.App.UI;
using DatReaderWriter;
using DatReaderWriter.Options;
using SysEnv = System.Environment;

namespace AcDream.App.Tests.UI;

public sealed class RetailCursorCatalogTests
{
    [Theory]
    [InlineData(CursorFeedbackKind.TargetPending, 0x27u, 14, 14)]
    [InlineData(CursorFeedbackKind.TargetValid, 0x28u, 14, 14)]
    [InlineData(CursorFeedbackKind.TargetInvalid, 0x29u, 14, 14)]
    public void TargetUseCursorSpecs_matchClientUISystemUpdateCursorState(
        CursorFeedbackKind kind,
        uint expectedEnum,
        int expectedHotspotX,
        int expectedHotspotY)
    {
        Assert.Equal(6u, RetailCursorCatalog.CursorEnumTable);

        Assert.True(RetailCursorCatalog.TryGetGlobalCursor(kind, out var spec));

        Assert.Equal(expectedEnum, spec.EnumId);
        Assert.Equal(expectedHotspotX, spec.HotspotX);
        Assert.Equal(expectedHotspotY, spec.HotspotY);
    }

    [Fact]
    public void TargetUseCursorSpecs_resolveGoldenDatSurfaces()
    {
        string? datDir = ResolveDatDir();
        if (datDir is null)
            return;

        using var dats = new DatCollection(datDir, DatAccessType.Read);
        var resolver = new RetailCursorResolver(dats, new object());

        Assert.True(resolver.TryResolve(new RetailCursorSpec(0x27u, 14, 14), out var pending));
        Assert.True(resolver.TryResolve(new RetailCursorSpec(0x28u, 14, 14), out var valid));
        Assert.True(resolver.TryResolve(new RetailCursorSpec(0x29u, 14, 14), out var invalid));

        Assert.Equal(new UiCursorMedia(0x06004D73u, 14, 14), pending);
        Assert.Equal(new UiCursorMedia(0x06005E6Bu, 14, 14), valid);
        Assert.Equal(new UiCursorMedia(0x06005E6Au, 14, 14), invalid);
    }

    private static string? ResolveDatDir()
    {
        string? fromEnv = SysEnv.GetEnvironmentVariable("ACDREAM_DAT_DIR");
        if (!string.IsNullOrWhiteSpace(fromEnv) && Directory.Exists(fromEnv))
            return fromEnv;

        string defaultDir = Path.Combine(
            SysEnv.GetFolderPath(SysEnv.SpecialFolder.UserProfile),
            "Documents",
            "Asheron's Call");
        return Directory.Exists(defaultDir) ? defaultDir : null;
    }
}