Add setting to preserve custom NLog configuration on updates

- Introduced `OverwriteGlobalNLogConfigOnUpdate` setting to allow users to retain custom NLog configurations during updates.
- Updated `UpdateManager` to respect this setting and prevent overwriting `NLog.config`.

Author: buttheadbob

Torch.API/ITorchConfig.cs

@@ -43,6 +43,7 @@ public interface ITorchConfig
         int GameUpdateRestartDelayMins { get; set; }
         bool EnableWhitelist { get; set; }
         List<ulong> Whitelist { get; set; }
+        bool OverwriteGlobalNLogConfigOnUpdate { get; set; }
 
         void Save(string path = null);
     }

Torch.Server/Managers/UpdateManager.cs

@@ -1,15 +1,7 @@
 using System;
-using System.Collections.Generic;
 using System.IO;
 using System.IO.Compression;
-using System.IO.Packaging;
-using System.Linq;
-using System.Net;
-using System.Reflection;
-using System.Text;
-using System.Text.RegularExpressions;
 using System.Threading;
-using System.Threading.Tasks;
 using NLog;
 using Torch.API;
 using Torch.API.WebAPI;
@@ -99,6 +91,11 @@ private void UpdateFromZip(string zipFile, string extractPath)
                 {
                     if(file.Name == "NLog-user.config" && File.Exists(Path.Combine(extractPath, file.FullName)))
                         continue;
+                    
+                    // Torch will overwrite any user nlog settings and some want a different set of options.  This allows them to keep theirs.
+                    if(file.Name == "NLog.config" && File.Exists(Path.Combine(extractPath, file.FullName)))
+                        if (!Torch.Config.OverwriteGlobalNLogConfigOnUpdate)
+                            continue;
 
                     var targetFile = Path.Combine(extractPath, file.FullName);
                     Directory.CreateDirectory(Path.GetDirectoryName(targetFile));

Torch.Server/TorchConfig.cs

@@ -223,6 +223,8 @@ public TorchBranchType BranchName
         [Display(Name = "Login Token", Description = "Steam GSLT (can be used if you have dynamic ip)", GroupName = "Server")]
         public string LoginToken { get => _loginToken; set => Set(value, ref _loginToken); }
 
+        [Display(Name = "Overwrite global NLog config on update.", Description = "This should ALWAYS be true UNLESS you know what you are doing.  Breaking the default config may cause issues with logging.  Just, no.  Leave this alone.", GroupName = "Logging" )]
+        public bool OverwriteGlobalNLogConfigOnUpdate { get; set; } = true;
 
         public event PropertyChangedEventHandler PropertyChanged;