From 8abc002f14defa451927d9c627ecdb9ae76c4dfc Mon Sep 17 00:00:00 2001
From: Haiping Chen <haiping008@gmail.com>
Date: Thu, 21 Sep 2023 14:21:59 -0500
Subject: [PATCH] route_to_agent fallback

---
 Directory.Build.props                           |  2 +-
 .../BotSharp.Core/Routing/RoutingService.cs     | 17 ++++++++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/Directory.Build.props b/Directory.Build.props
index 23dce0b1..81c66e4a 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -2,7 +2,7 @@
  <PropertyGroup>
    <LangVersion>10.0</LangVersion>
    <OutputPath>..\..\..\packages</OutputPath>
-   <BotSharpVersion>0.14.5</BotSharpVersion>
+   <BotSharpVersion>0.14.6</BotSharpVersion>
    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
  </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/src/Infrastructure/BotSharp.Core/Routing/RoutingService.cs b/src/Infrastructure/BotSharp.Core/Routing/RoutingService.cs
index 665f6ce7..4eae4709 100644
--- a/src/Infrastructure/BotSharp.Core/Routing/RoutingService.cs
+++ b/src/Infrastructure/BotSharp.Core/Routing/RoutingService.cs
@@ -59,8 +59,23 @@ public class RoutingService : IRoutingService
             // Compatible with previous Router, can be removed in the future.
             else if (inst.Function == "route_to_agent")
             {
+                // If the agent name is empty, fallback to router
+                if (string.IsNullOrEmpty(inst.Parameters.AgentName))
+                {
+                    result = new RoleDialogModel(AgentRole.Function, inst.Reason)
+                    {
+                        FunctionName = inst.Function,
+                        FunctionArgs = JsonSerializer.Serialize(new RoutingArgs
+                        {
+                            AgentName = inst.Parameters.AgentName
+                        }),
+                        CurrentAgentId = router.Id
+                    };
+                    break;
+                }
+
                 var function = _services.GetServices<IFunctionCallback>().FirstOrDefault(x => x.Name == inst.Function);
-                result = new RoleDialogModel(AgentRole.Function, inst.Parameters.Question)
+                result = new RoleDialogModel(AgentRole.Function, inst.Reason)
                 {
                     FunctionName = inst.Function,
                     FunctionArgs = JsonSerializer.Serialize(new RoutingArgs