namespace ZB.MOM.WW.MxGateway.Tests.ProjectStructure;

/// <summary>Pins the structure of the windev worker CI script.</summary>
public sealed class WindevCiContractTests
{
    /// <summary>Verifies live mode runs the Windows test tiers in the documented order.</summary>
    [Fact]
    public void LiveMode_RunsWindowsTiersInDocumentedOrder()
    {
        DirectoryInfo repositoryRoot = FindRepositoryRoot();
        string script = File.ReadAllText(
            Path.Combine(repositoryRoot.FullName, "scripts", "ci", "windev-worker-ci.ps1"));

        string[] orderedSteps =
        [
            "Invoke-Native 'x86 Worker build'",
            "Invoke-Native 'x86 Worker.Tests'",
            "Invoke-Native 'full slnx build'",
            "Invoke-Native 'gateway tests on Windows'",
            "Invoke-Native 'live-MXAccess smoke'",
        ];

        int previousIndex = -1;
        foreach (string step in orderedSteps)
        {
            int currentIndex = script.IndexOf(step, StringComparison.Ordinal);
            Assert.True(currentIndex >= 0, $"Missing windev live-mode step: {step}");
            Assert.True(currentIndex > previousIndex, $"Windev live-mode step is out of order: {step}");
            previousIndex = currentIndex;
        }

        Assert.Contains(
            "dotnet test $gatewayTests -c Release --no-build",
            script,
            StringComparison.Ordinal);
    }

    private static DirectoryInfo FindRepositoryRoot()
    {
        DirectoryInfo? current = new(AppContext.BaseDirectory);
        while (current is not null)
        {
            if (File.Exists(Path.Combine(current.FullName, "CLAUDE.md"))
                && Directory.Exists(Path.Combine(current.FullName, "src"))
                && Directory.Exists(Path.Combine(current.FullName, "scripts")))
            {
                return current;
            }

            current = current.Parent;
        }

        throw new InvalidOperationException("Could not locate the repository root from the test output directory.");
    }
}