using JournalBot.Shared;
using Xunit;

public class BotRunnerTests
{
    // Locate the venv python; skip if absent (CI without venv).
    private static string? VenvPython()
    {
        var root = FindRepoRoot();
        if (root is null) return null;
        var py = Path.Combine(root, ".venv", "Scripts", "python.exe");
        return File.Exists(py) ? py : null;
    }

    private static string? FindRepoRoot()
    {
        var dir = new DirectoryInfo(AppContext.BaseDirectory);
        while (dir is not null && !File.Exists(Path.Combine(dir.FullName, "pyproject.toml")))
            dir = dir.Parent;
        return dir?.FullName;
    }

    [Fact]
    public async Task Run_capturesStdoutAndExitCode()
    {
        var py = VenvPython();
        if (py is null) return; // environment without venv; nothing to assert
        var runner = new BotRunner(py, FindRepoRoot()!);
        var result = await runner.RunRawAsync(new[] { "-c", "print('hi')" });
        Assert.Equal(0, result.ExitCode);
        Assert.Contains("hi", result.Output);
    }

    [Fact]
    public async Task Run_cancellationThrowsAndDoesNotHang()
    {
        var py = VenvPython();
        if (py is null) return; // no venv in this environment
        var runner = new BotRunner(py, FindRepoRoot()!);
        using var cts = new System.Threading.CancellationTokenSource();
        cts.CancelAfter(TimeSpan.FromMilliseconds(200));
        await Assert.ThrowsAsync<TaskCanceledException>(async () =>
            await runner.RunRawAsync(new[] { "-c", "import time; time.sleep(30)" }, cts.Token));
    }
}