using System.Diagnostics;
using Ludarium.Application;
using Ludarium.Domain;

namespace Ludarium.UnitTests;

public sealed class ScaleTests
{
    [Theory]
    [InlineData(10_000)]
    [InlineData(100_000)]
    [Trait("Category", "Scale")]
    public void ClassifierProcessesLargeSyntheticInventoriesWithinBoundedResources(int count)
    {
        var allocatedBefore = GC.GetAllocatedBytesForCurrentThread();
        var stopwatch = Stopwatch.StartNew();
        var recognized = 0;

        for (var index = 0; index < count; index++)
        {
            var platform = index % 2 == 0 ? "nes" : "gba";
            var extension = platform == "nes" ? "nes" : "gba";
            ReadOnlySpan<byte> header = platform == "nes"
                ? new byte[] { 0x4e, 0x45, 0x53, 0x1a }
                : new byte[] { 0, 0, 0, 0, 0x24, 0xff, 0xae, 0x51 };
            var result = ArtifactAnalysis.Classify($"roms/{platform}/Synthetic-{index:D6}.{extension}",
                header, platform);
            if (result.MediaType == MediaType.Rom && result.Platform == platform) recognized++;
        }

        stopwatch.Stop();
        var allocated = GC.GetAllocatedBytesForCurrentThread() - allocatedBefore;
        Assert.Equal(count, recognized);
        Assert.True(stopwatch.Elapsed < TimeSpan.FromSeconds(30), $"Classification took {stopwatch.Elapsed}.");
        Assert.True(allocated < 512L * 1024 * 1024, $"Classification allocated {allocated:N0} bytes.");
    }
}