From beb82c855a1581f42ffd99619ba745d294fac8b8 Mon Sep 17 00:00:00 2001
From: Haiping Chen <101423@smsassist.com>
Date: Wed, 28 Feb 2024 20:45:01 -0600
Subject: [PATCH] fix GetCurrentAgentId

---
 src/Infrastructure/BotSharp.Core/Routing/RoutingContext.cs   | 5 +++++
 .../BotSharp.Plugin.ChatHub/Hooks/StreamingLogHook.cs        | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Infrastructure/BotSharp.Core/Routing/RoutingContext.cs b/src/Infrastructure/BotSharp.Core/Routing/RoutingContext.cs
index 2666daff..db8900b4 100644
--- a/src/Infrastructure/BotSharp.Core/Routing/RoutingContext.cs
+++ b/src/Infrastructure/BotSharp.Core/Routing/RoutingContext.cs
@@ -53,6 +53,11 @@ public class RoutingContext : IRoutingContext
 
     public string GetCurrentAgentId()
     {
+        if (_stack.Count == 0)
+        {
+            return string.Empty;
+        }
+
         return _stack.Peek();
     }
 
diff --git a/src/Plugins/BotSharp.Plugin.ChatHub/Hooks/StreamingLogHook.cs b/src/Plugins/BotSharp.Plugin.ChatHub/Hooks/StreamingLogHook.cs
index cfc4b446..812f87e6 100644
--- a/src/Plugins/BotSharp.Plugin.ChatHub/Hooks/StreamingLogHook.cs
+++ b/src/Plugins/BotSharp.Plugin.ChatHub/Hooks/StreamingLogHook.cs
@@ -182,7 +182,7 @@ public class StreamingLogHook : ConversationHookBase, IContentGeneratingHook, IR
         var agent = await _agentService.LoadAgent(agentId);
         var currentAgent = await _agentService.LoadAgent(currentAgentId);
 
-        var log = $"{agent.Name} is dequeued{(reason != null ? $" ({reason})" : "")}, current agent is {currentAgent.Name}";
+        var log = $"{agent.Name} is dequeued{(reason != null ? $" ({reason})" : "")}, current agent is {currentAgent?.Name}";
         await _chatHub.Clients.User(_user.Id).SendAsync("OnConversationContentLogGenerated",
             BuildContentLog(conversationId, "Router", log, ContentLogSource.HardRule, new RoleDialogModel(AgentRole.System, log)
             {