Port managed client audio and Windows application

clients/windows/VoiceCat.App/Program.cs

@@ -5,7 +5,7 @@ namespace VoiceCat.App;
 internal static class Program
 {
     [STAThread]
-    private static void Main()
+    private static int Main(string[] args)
     {
         // Surface exceptions that WinForms' default message-loop handling would otherwise
         // swallow silently (or crash with no visible cause).
@@ -16,12 +16,37 @@ internal static class Program
 
         ApplicationConfiguration.Initialize();
 
+        if (args.Contains("--smoke-test"))
+        {
+            try
+            {
+                using var client = new VoiceCat.Interop.VoiceCatClient("Smoke", "test");
+                using var form = new MainForm(client, 0, "Smoke", "Managed core");
+                form.CreateControl();
+                if (form.Controls.Count == 0 || string.IsNullOrEmpty(form.Text)) return 1;
+                client.PumpEvents();
+                if (args.Contains("--audio"))
+                {
+                    var backend = new Audio.WasapiAudioBackend();
+                    using var playback = backend.OpenPlayback();
+                    int samples = 0;
+                    using var capture = backend.OpenCapture(null, false, (pcm, _) => Interlocked.Add(ref samples, pcm.Length));
+                    short[] silence = new short[1920];
+                    for (int i = 0; i < 150; i++) { playback.Write(silence); Thread.Sleep(20); }
+                    if (samples == 0) return 2;
+                }
+                return 0;
+            }
+            catch { return 1; }
+        }
+
         using var connectDialog = new ConnectDialog();
         var result = connectDialog.ShowDialog();
         if (result != DialogResult.OK || connectDialog.ConnectedClient is null)
-            return;
+            return 0;
 
         Application.Run(new MainForm(connectDialog.ConnectedClient, connectDialog.SelfUserId,
             connectDialog.Nickname, connectDialog.ServerName));
+        return 0;
     }
 }