Added IChatClient implementation for PersistentAgentsClient

eng/Packages.Data.props

@@ -206,6 +206,10 @@
     <PackageReference Update="NUnit" Version="3.13.2" />
   </ItemGroup>
 
+  <ItemGroup Condition="$(MSBuildProjectName.Contains('Azure.AI.Agents.Persistent'))">
+    <PackageReference Update="Microsoft.Extensions.AI.Abstractions" Version="9.6.0"/>
+  </ItemGroup>
+
   <ItemGroup Condition="$(MSBuildProjectName.Contains('Azure.Projects'))">
     <PackageReference Update="Azure.Data.AppConfiguration" Version="1.6.0"/>
     <PackageReference Update="Azure.Provisioning.Deployment" Version="1.0.0-beta.2"/>

sdk/ai/Azure.AI.Agents.Persistent/api/Azure.AI.Agents.Persistent.net8.0.cs

@@ -1164,6 +1164,10 @@ public PersistentAgentsClient(string endpoint, Azure.Core.TokenCredential creden
         public virtual Azure.Response<Azure.AI.Agents.Persistent.ThreadRun> CreateThreadAndRun(string assistantId, Azure.AI.Agents.Persistent.ThreadAndRunOptions options, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual System.Threading.Tasks.Task<Azure.Response<Azure.AI.Agents.Persistent.ThreadRun>> CreateThreadAndRunAsync(string assistantId, Azure.AI.Agents.Persistent.ThreadAndRunOptions options, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
     }
+    public static partial class PersistentAgentsClientExtensions
+    {
+        public static Microsoft.Extensions.AI.IChatClient AsIChatClient(this Azure.AI.Agents.Persistent.PersistentAgentsClient client, string agentId, string? defaultThreadId = null) { throw null; }
+    }
     public static partial class PersistentAgentsExtensions
     {
         public static Azure.AI.Agents.Persistent.PersistentAgentsClient GetPersistentAgentsClient(this System.ClientModel.Primitives.ClientConnectionProvider provider) { throw null; }

sdk/ai/Azure.AI.Agents.Persistent/api/Azure.AI.Agents.Persistent.netstandard2.0.cs

@@ -1164,6 +1164,10 @@ public PersistentAgentsClient(string endpoint, Azure.Core.TokenCredential creden
         public virtual Azure.Response<Azure.AI.Agents.Persistent.ThreadRun> CreateThreadAndRun(string assistantId, Azure.AI.Agents.Persistent.ThreadAndRunOptions options, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual System.Threading.Tasks.Task<Azure.Response<Azure.AI.Agents.Persistent.ThreadRun>> CreateThreadAndRunAsync(string assistantId, Azure.AI.Agents.Persistent.ThreadAndRunOptions options, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
     }
+    public static partial class PersistentAgentsClientExtensions
+    {
+        public static Microsoft.Extensions.AI.IChatClient AsIChatClient(this Azure.AI.Agents.Persistent.PersistentAgentsClient client, string agentId, string? defaultThreadId = null) { throw null; }
+    }
     public static partial class PersistentAgentsExtensions
     {
         public static Azure.AI.Agents.Persistent.PersistentAgentsClient GetPersistentAgentsClient(this System.ClientModel.Primitives.ClientConnectionProvider provider) { throw null; }

sdk/ai/Azure.AI.Agents.Persistent/assets.json

@@ -2,5 +2,5 @@
   "AssetsRepo": "Azure/azure-sdk-assets",
   "AssetsRepoPrefixPath": "net",
   "TagPrefix": "net/ai/Azure.AI.Agents.Persistent",
-  "Tag": "net/ai/Azure.AI.Agents.Persistent_f7ce2c53dc"
+  "Tag": "net/ai/Azure.AI.Agents.Persistent_44b68ac951"
 }

sdk/ai/Azure.AI.Agents.Persistent/src/Azure.AI.Agents.Persistent.csproj

@@ -16,6 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="Azure.Core" />
+    <PackageReference Include="Microsoft.Extensions.AI.Abstractions" />
   </ItemGroup>
 
   <!-- Shared source from Azure.Core -->

sdk/ai/Azure.AI.Agents.Persistent/src/Custom/PersistentAgentsAdministrationClient.cs

@@ -20,8 +20,8 @@ namespace Azure.AI.Agents.Persistent
     public partial class PersistentAgentsAdministrationClient
     {
         private static readonly bool s_is_test_run = AppContextSwitchHelper.GetConfigValue(
-            PersistantAgensConstants.UseOldConnectionString,
-            PersistantAgensConstants.UseOldConnectionStringEnvVar);
+            PersistentAgentsConstants.UseOldConnectionString,
+            PersistentAgentsConstants.UseOldConnectionStringEnvVar);
         /// <summary> The ClientDiagnostics is used to provide tracing support for the client library. </summary>
         internal virtual ClientDiagnostics ClientDiagnostics { get; }
         // TODO: Replace project connections string by PROJECT_ENDPOINT when 1DP will be available.

sdk/ai/Azure.AI.Agents.Persistent/src/Custom/PersistentAgentsClientExtensions.cs

@@ -0,0 +1,29 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+#nullable enable
+
+using Microsoft.Extensions.AI;
+
+namespace Azure.AI.Agents.Persistent
+{
+    /// <summary>
+    /// Provides extension methods for <see cref="PersistentAgentsClient"/>.
+    /// </summary>
+    public static class PersistentAgentsClientExtensions
+    {
+        /// <summary>
+        /// Creates an <see cref="IChatClient"/> for a <see cref="PersistentAgentsClient"/> client for interacting with a specific agent.
+        /// </summary>
+        /// <param name="client">The <see cref="PersistentAgentsClient"/> instance to be accessed as an <see cref="IChatClient"/>.</param>
+        /// <param name="agentId">The unique identifier of the agent with which to interact.</param>
+        /// <param name="defaultThreadId">
+        /// An optional existing thread identifier for the chat session. This serves as a default, and may be overridden per call to
+        /// <see cref="IChatClient.GetResponseAsync"/> or <see cref="IChatClient.GetStreamingResponseAsync"/> via the <see cref="ChatOptions.ConversationId"/>
+        /// property. If no thread ID is provided via either mechanism, a new thread will be created for the request.
+        /// </param>
+        /// <returns>An <see cref="IChatClient"/> instance configured to interact with the specified agent and thread.</returns>
+        public static IChatClient AsIChatClient(this PersistentAgentsClient client, string agentId, string? defaultThreadId = null) =>
+            new PersistentAgentsChatClient(client, agentId, defaultThreadId);
+    }
+}

sdk/ai/Azure.AI.Agents.Persistent/src/Custom/PersistantAgensConstants.cs → sdk/ai/Azure.AI.Agents.Persistent/src/Custom/PersistentAgentsConstants.cs

@@ -3,7 +3,7 @@
 
 namespace Azure.AI.Agents.Persistent
 {
-    internal class PersistantAgensConstants
+    internal class PersistentAgentsConstants
     {
         public const string UseOldConnectionString = "Azure.AI.Agents.Persistent.Internal.UseConnectionString";
         public const string UseOldConnectionStringEnvVar = "_IS_TEST_RUN";