Fix permanently stopped IPC when ASF update has failed

ArchiSteamFarm/Core/ASF.cs

@@ -319,13 +319,17 @@ public static class ASF {
 
 			await PluginsCore.OnUpdateProceeding(newVersion).ConfigureAwait(false);
 
-			try {
+			bool kestrelWasRunning = ArchiKestrel.IsRunning;
+
+			if (kestrelWasRunning) {
 				// We disable ArchiKestrel here as the update process moves the core files and might result in IPC crash
 				// TODO: It might fail if the update was triggered from the API, this should be something to improve in the future, by changing the structure into request -> return response -> finish update
+				try {
 					await ArchiKestrel.Stop().ConfigureAwait(false);
 				} catch (Exception e) {
 					ArchiLogger.LogGenericWarningException(e);
 				}
+			}
 
 			ArchiLogger.LogGenericInfo(Strings.PatchingFiles);
 
@@ -342,6 +346,16 @@ public static class ASF {
 			} catch (Exception e) {
 				ArchiLogger.LogGenericException(e);
 
+				if (kestrelWasRunning) {
+					// We've temporarily disabled ArchiKestrel but the update has failed, let's bring it back up
+					// We can't even be sure if it's possible to bring it back up in this state, but it's worth trying anyway
+					try {
+						await ArchiKestrel.Start().ConfigureAwait(false);
+					} catch (Exception ex) {
+						ArchiLogger.LogGenericWarningException(ex);
+					}
+				}
+
 				return null;
 			}
 

ArchiSteamFarm/IPC/ArchiKestrel.cs

@@ -42,6 +42,8 @@ using NLog.Web;
 namespace ArchiSteamFarm.IPC;
 
 internal static class ArchiKestrel {
+	internal static bool IsRunning => KestrelWebHost != null;
+
 	internal static HistoryTarget? HistoryTarget { get; private set; }
 
 	private static IHost? KestrelWebHost;