From 061ce95e353d05622da935a3a57b6bdff57a2d0b Mon Sep 17 00:00:00 2001
From: Jicheng Lu <103353@smsassist.com>
Date: Mon, 21 Jul 2025 23:01:53 -0500
Subject: [PATCH] allow using template across agents

---
 .../FileRepository/FileRepository.Agent.cs    |  2 +-
 .../Templating/TemplateRender.cs              | 46 +++++++++++++++----
 2 files changed, 38 insertions(+), 10 deletions(-)

diff --git a/src/Infrastructure/BotSharp.Core/Repository/FileRepository/FileRepository.Agent.cs b/src/Infrastructure/BotSharp.Core/Repository/FileRepository/FileRepository.Agent.cs
index f7e70ca7..c5947708 100644
--- a/src/Infrastructure/BotSharp.Core/Repository/FileRepository/FileRepository.Agent.cs
+++ b/src/Infrastructure/BotSharp.Core/Repository/FileRepository/FileRepository.Agent.cs
@@ -475,7 +475,7 @@ namespace BotSharp.Core.Repository
 
             if (!filter.AgentNames.IsNullOrEmpty())
             {
-                query = query.Where(x => filter.AgentNames.Contains(x.Name));
+                query = query.Where(x => filter.AgentNames.Contains(x.Name, StringComparer.OrdinalIgnoreCase));
             }
 
             if (!string.IsNullOrEmpty(filter.SimilarName))
diff --git a/src/Infrastructure/BotSharp.Core/Templating/TemplateRender.cs b/src/Infrastructure/BotSharp.Core/Templating/TemplateRender.cs
index f7e5ecde..5b65465d 100644
--- a/src/Infrastructure/BotSharp.Core/Templating/TemplateRender.cs
+++ b/src/Infrastructure/BotSharp.Core/Templating/TemplateRender.cs
@@ -8,6 +8,7 @@ using System.Collections;
 using System.IO;
 using System.Reflection;
 using System.Text.Encodings.Web;
+using System.Text.RegularExpressions;
 
 namespace BotSharp.Core.Templating;
 
@@ -36,9 +37,9 @@ public class TemplateRender : ITemplateRender
         _options.MemberAccessStrategy.Register<UserIdentity>();
         _options.MemberAccessStrategy.Register<TranslationInput>();
 
-        _parser.RegisterIdentifierTag("link", (string identifier, TextWriter writer, TextEncoder encoder, TemplateContext context) =>
+        _parser.RegisterExpressionTag("link", (Expression expression, TextWriter writer, TextEncoder encoder, TemplateContext context) =>
         {
-            return RenderIdentifierTag("link", identifier, writer, encoder, context);
+            return RenderTag("link", expression, writer, encoder, context, services);
         });
     }
 
@@ -82,20 +83,47 @@ public class TemplateRender : ITemplateRender
 
 
     #region Private methods
-    private static async ValueTask<Completion> RenderIdentifierTag(string tag, string identifier, TextWriter writer, TextEncoder encoder, TemplateContext context)
+    private static async ValueTask<Completion> RenderTag(
+        string tag,
+        Expression expression,
+        TextWriter writer,
+        TextEncoder encoder,
+        TemplateContext context,
+        IServiceProvider services)
     {
+
         try
         {
-            var value = await context.Model.GetValueAsync(TemplateRenderConstant.RENDER_AGENT, context);
-            var agent = value?.ToObjectValue() as Agent;
-            var found = agent?.Templates?.FirstOrDefault(x => x.Name.IsEqualTo(identifier));
-            var key = $"{agent?.Id} | {tag} | {identifier}";
+            var value = await expression.EvaluateAsync(context);
+            var expStr = value?.ToStringValue() ?? string.Empty;
 
-            if (found == null || (context.AmbientValues.TryGetValue(key, out var visited) && (bool)visited))
+            value = await context.Model.GetValueAsync(TemplateRenderConstant.RENDER_AGENT, context);
+            var agent = value?.ToObjectValue() as Agent;
+
+            var splited = Regex.Split(expStr, @"\s*from\s*", RegexOptions.IgnoreCase | RegexOptions.CultureInvariant)
+                               .Where(x => !string.IsNullOrWhiteSpace(x))
+                               .Select(x => x.Trim())
+                               .ToArray();
+
+            var templateName = splited.ElementAtOrDefault(0);
+            var agentName = splited.ElementAtOrDefault(1);
+
+            if (splited.Length > 1 && !agentName.IsEqualTo(agent?.Name))
+            {
+                using var scope = services.CreateScope();
+                var agentService = scope.ServiceProvider.GetRequiredService<IAgentService>();
+                var result = await agentService.GetAgents(new() { SimilarName = agentName });
+                agent = result?.Items?.FirstOrDefault();
+            }
+
+            var template = agent?.Templates?.FirstOrDefault(x => x.Name.IsEqualTo(templateName));
+            var key = $"{tag} | {agent?.Id} | {templateName}";
+
+            if (template == null || (context.AmbientValues.TryGetValue(key, out var visited) && (bool)visited))
             {
                 writer.Write(string.Empty);
             }
-            else if (_parser.TryParse(found.Content, out var t, out _))
+            else if (_parser.TryParse(template.Content, out var t, out _))
             {
                 context.AmbientValues[key] = true;
                 var rendered = t.Render(context);