Fix async command responses (#393)

Fix logs not being written for invalid IL

Torch.API/Managers/IChatManagerClient.cs

@@ -18,7 +18,7 @@ namespace Torch.API.Managers
     /// <summary>
     /// Represents a scripted or user chat message.
     /// </summary>
-    public struct TorchChatMessage
+    public readonly struct TorchChatMessage
     {
         private const string DEFAULT_FONT = MyFontEnum.Blue;
 

Torch.Server/Views/ChatControl.xaml.cs

@@ -177,15 +177,11 @@ namespace Torch.Server
                 InsertMessage(new TorchChatMessage(TorchBase.Instance.Config.ChatName, text, TorchBase.Instance.Config.ChatColor));
                 _server.Invoke(() =>
                 {
-                    var responses = commands.HandleCommandFromServer(text);
-                    if (responses == null)
+                    if (!commands.HandleCommandFromServer(text, InsertMessage))
                     {
                         InsertMessage(new TorchChatMessage(TorchBase.Instance.Config.ChatName, "Invalid command.", TorchBase.Instance.Config.ChatColor));
                         return;
                     }
-                    
-                    foreach (var response in responses)
-                        InsertMessage(response);
                 });
             }
             else

Torch/Commands/CommandManager.cs

@@ -82,7 +82,7 @@ namespace Torch.Commands
             }
         }
 
-        public List<TorchChatMessage> HandleCommandFromServer(string message)
+        private List<TorchChatMessage> HandleCommandFromServerInternal(string message, Action<TorchChatMessage> subscriber = null)
         {
             var cmdText = new string(message.Skip(1).ToArray());
             var command = Commands.GetCommand(cmdText, out string argText);
@@ -93,6 +93,8 @@ namespace Torch.Commands
             var splitArgs = Regex.Matches(argText, "(\"[^\"]+\"|\\S+)").Cast<Match>().Select(x => x.ToString().Replace("\"", "")).ToList();
             _log.Trace($"Invoking {cmdPath} for server.");
             var context = new ConsoleCommandContext(Torch, command.Plugin, Sync.MyId, argText, splitArgs);
+            if (subscriber != null)
+                context.OnResponse += subscriber;
             if (command.TryInvoke(context))
                 _log.Info($"Server ran command '{message}'");
             else
@@ -100,6 +102,20 @@ namespace Torch.Commands
             return context.Responses;
         }
 
+        /// <summary>
+        /// Invokes the given command string as the server, subscribing to responses using the given callback.
+        /// </summary>
+        /// <returns>true if the command was run, false if not</returns>
+        public bool HandleCommandFromServer(string message, Action<TorchChatMessage> subscriber)
+        {
+            return HandleCommandFromServerInternal(message, subscriber) != null;
+        }
+
+        public List<TorchChatMessage> HandleCommandFromServer(string message)
+        {
+            return HandleCommandFromServerInternal(message, null);
+        }
+
         public void HandleCommand(TorchChatMessage msg, ref bool consumed)
         {
             if (msg.AuthorSteamId.HasValue)

Torch/Commands/ConsoleCommandContext.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.Text;
 using Torch.API;
@@ -9,6 +10,8 @@ namespace Torch.Commands
     public class ConsoleCommandContext : CommandContext
     {
         public List<TorchChatMessage> Responses = new List<TorchChatMessage>();
+        public event Action<TorchChatMessage> OnResponse;
+
         private bool _flag;
         
         /// <inheritdoc />
@@ -24,7 +27,9 @@ namespace Torch.Commands
                 font = null;
             }
 
-            Responses.Add(new TorchChatMessage(sender ?? TorchBase.Instance.Config.ChatName, message, font ?? TorchBase.Instance.Config.ChatColor));
+            var msg = new TorchChatMessage(sender ?? TorchBase.Instance.Config.ChatName, message, font ?? TorchBase.Instance.Config.ChatColor);
+            Responses.Add(msg);
+            OnResponse?.Invoke(msg);
         }
     }
 }

Torch/Managers/PatchManager/DecoratedMethod.cs

@@ -173,6 +173,8 @@ namespace Torch.Managers.PatchManager
                         LogTarget(PrintModeEnum.Emitted, false, "========== Desired method ==========");
                         MethodTranspiler.IntegrityAnalysis((a, b) => LogTarget(PrintModeEnum.Emitted, a, b), il);
                         LogTarget(PrintModeEnum.Emitted, false, gap);
+                        // If the method is invalid the program is likely to hard crash in EmitMethod or Compile, so flush the log
+                        LogManager.Flush();
                     }
                 }
 
@@ -182,15 +184,16 @@ namespace Torch.Managers.PatchManager
                 {
                     PatchUtilities.Compile(method);
                 }
-                catch
+                catch (Exception failure)
                 {
                     lock (_log)
                     {
+                        _log.Error(failure, $"Failed to patch method {_method}");
                         var ctx = new MethodContext(method);
                         ctx.Read();
                         MethodTranspiler.IntegrityAnalysis((err, msg) => _log.Warn(msg), ctx.Instructions);
+                        LogManager.Flush();
                     }
-
                     throw;
                 }