using DodoSSH.Client.App.Platform;
using DodoSSH.Client.Session;

namespace DodoSSH.Client.App.Tests;

/// <summary>
/// That the application leaves a record of why it died.
/// </summary>
/// <remarks>
/// An exception nothing caught used to close the window and leave nothing at all behind. Installing the hooks
/// here also installs them in the test process, which is harmless: they only write to this test's own
/// directory, and only when something reaches the top.
/// </remarks>
public sealed class CrashLogTests : IDisposable
{
    private readonly string directory =
        Path.Combine(Path.GetTempPath(), $"dodossh-crash-{Guid.CreateVersion7():N}");

    public void Dispose()
    {
        if (Directory.Exists(directory))
        {
            Directory.Delete(directory, recursive: true);
        }
    }

    [Fact]
    public void AnExceptionThatReachesTheTop_IsWrittenToTheProfile()
    {
        var paths = new ClientPaths(directory);

        CrashLog.Install(paths);
        CrashLog.Write("UI thread", new InvalidOperationException("the thing nobody caught"));

        var written = File.ReadAllText(paths.CrashLogFile);

        written.ShouldContain("UI thread");
        written.ShouldContain("the thing nobody caught");
        written.ShouldContain(nameof(InvalidOperationException));
    }
}