[#6432] TeamsInfo.GetMemberAsync(...) doesn't work properly in Skill Bot scenario, it returns http 405 error

libraries/Microsoft.Bot.Builder/ChannelServiceHandlerBase.cs

@@ -129,6 +129,20 @@ public async Task<IList<ChannelAccount>> HandleGetConversationMembersAsync(strin
             return await OnGetConversationMembersAsync(claimsIdentity, conversationId, cancellationToken).ConfigureAwait(false);
         }
 
+        /// <summary>
+        /// Gets the account of a single conversation member.
+        /// </summary>
+        /// <param name="authHeader">The authentication header.</param>
+        /// <param name="userId">The user id.</param>
+        /// <param name="conversationId">The conversation Id.</param>
+        /// <param name="cancellationToken">A cancellation token that can be used by other objects or threads to receive notice of cancellation.</param>
+        /// <returns>A <see cref="Task{TResult}"/> representing the result of the asynchronous operation.</returns>
+        public async Task<ChannelAccount> HandleGetConversationMemberAsync(string authHeader, string userId, string conversationId, CancellationToken cancellationToken = default)
+        {
+            var claimsIdentity = await AuthenticateAsync(authHeader, cancellationToken).ConfigureAwait(false);
+            return await OnGetConversationMemberAsync(claimsIdentity, userId, conversationId, cancellationToken).ConfigureAwait(false);
+        }
+
         /// <summary>
         /// Enumerates the members of a conversation one page at a time.
         /// </summary>
@@ -392,6 +406,25 @@ protected virtual Task<IList<ChannelAccount>> OnGetConversationMembersAsync(Clai
             throw new NotImplementedException();
         }
 
+        /// <summary>
+        /// GetConversationMember() API for Skill.
+        /// </summary>
+        /// <remarks>
+        /// Override this method to get the account of a single conversation member.
+        ///
+        /// This REST API takes a ConversationId and UserId and returns the ChannelAccount
+        /// objects representing the member of the conversation.
+        /// </remarks>
+        /// <param name="claimsIdentity">claimsIdentity for the bot, should have AudienceClaim, AppIdClaim and ServiceUrlClaim.</param>
+        /// <param name="userId">User ID.</param>
+        /// <param name='conversationId'>Conversation ID.</param>
+        /// <param name='cancellationToken'>The cancellation token.</param>
+        /// <returns>task for a response.</returns>
+        protected virtual Task<ChannelAccount> OnGetConversationMemberAsync(ClaimsIdentity claimsIdentity, string userId, string conversationId, CancellationToken cancellationToken = default)
+        {
+            throw new NotImplementedException();
+        }
+
         /// <summary>
         /// GetConversationPagedMembers() API for Skill.
         /// </summary>

libraries/Microsoft.Bot.Builder/Skills/CloudSkillHandler.cs

@@ -132,5 +132,11 @@ protected override async Task<ResourceResponse> OnUpdateActivityAsync(ClaimsIden
         {
             return await _inner.OnUpdateActivityAsync(claimsIdentity, conversationId, activityId, activity, cancellationToken).ConfigureAwait(false);
         }
+
+        /// <inheritdoc/>
+        protected override async Task<ChannelAccount> OnGetConversationMemberAsync(ClaimsIdentity claimsIdentity, string userId, string conversationId, CancellationToken cancellationToken = default)
+        {
+            return await _inner.OnGetMemberAsync(claimsIdentity, userId, conversationId, cancellationToken).ConfigureAwait(false);
+        }
     }
 }

libraries/Microsoft.Bot.Builder/Skills/SkillHandlerImpl.cs

@@ -7,6 +7,7 @@
 using System.Security.Claims;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.Bot.Connector;
 using Microsoft.Bot.Connector.Authentication;
 using Microsoft.Bot.Schema;
 using Microsoft.Extensions.Logging;
@@ -91,6 +92,23 @@ internal async Task<ResourceResponse> OnUpdateActivityAsync(ClaimsIdentity claim
             return resourceResponse ?? new ResourceResponse(Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture));
         }
 
+        internal async Task<ChannelAccount> OnGetMemberAsync(ClaimsIdentity claimsIdentity, string userId, string conversationId, CancellationToken cancellationToken = default)
+        {
+            var skillConversationReference = await GetSkillConversationReferenceAsync(conversationId, cancellationToken).ConfigureAwait(false);
+            ChannelAccount member = null;
+
+            var callback = new BotCallbackHandler(async (turnContext, ct) =>
+            {
+                var client = turnContext.TurnState.Get<IConnectorClient>();
+                var conversationId = turnContext.Activity.Conversation.Id;
+                member = await ((Conversations)client.Conversations).GetConversationMemberAsync(userId, conversationId, cancellationToken).ConfigureAwait(false);
+            });
+
+            await _adapter.ContinueConversationAsync(claimsIdentity, skillConversationReference.ConversationReference, skillConversationReference.OAuthScope, callback, cancellationToken).ConfigureAwait(false);
+
+            return member;
+        }
+
         private static void ApplySkillActivityToTurnContext(ITurnContext turnContext, Activity activity)
         {
             // adapter.ContinueConversation() sends an event activity with ContinueConversation in the name.

libraries/integration/Microsoft.Bot.Builder.Integration.AspNet.Core/ChannelServiceController.cs

@@ -130,6 +130,19 @@ public virtual async Task<IActionResult> GetConversationMembersAsync(string conv
             return new JsonResult(result, HttpHelper.BotMessageSerializerSettings);
         }
 
+        /// <summary>
+        /// GetConversationMember.
+        /// </summary>
+        /// <param name="userId">User ID.</param>
+        /// <param name="conversationId">Conversation ID.</param>
+        /// <returns>The ChannelAccount of the conversation member.</returns>
+        [HttpGet("v3/conversations/{conversationId}/members/{userId}")]
+        public virtual async Task<IActionResult> GetConversationMemberAsync(string userId, string conversationId)
+        {
+            var result = await _handler.HandleGetConversationMemberAsync(HttpContext.Request.Headers["Authorization"], userId, conversationId).ConfigureAwait(false);
+            return new JsonResult(result, HttpHelper.BotMessageSerializerSettings);
+        }
+
         /// <summary>
         /// GetConversationPagedMembers.
         /// </summary>

tests/Microsoft.Bot.Builder.Tests/Skills/CloudSkillHandlerTests.cs

@@ -3,10 +3,12 @@
 
 using System;
 using System.Collections.Concurrent;
+using System.Net.Http;
 using System.Security.Claims;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.Bot.Builder.Skills;
+using Microsoft.Bot.Connector;
 using Microsoft.Bot.Connector.Authentication;
 using Microsoft.Bot.Schema;
 using Moq;
@@ -19,6 +21,11 @@ public class CloudSkillHandlerTests
     {
         private static readonly string TestSkillId = Guid.NewGuid().ToString("N");
         private static readonly string TestAuthHeader = string.Empty; // Empty since claims extraction is being mocked
+        private static readonly ChannelAccount TestMember = new ChannelAccount()
+        {
+            Id = "userId",
+            Name = "userName"
+        };
 
         [Theory]
         [InlineData(ActivityTypes.Message, null)]
@@ -155,6 +162,23 @@ public async void TestUpdateActivityAsync()
             Assert.Equal(activity.Text, mockObjects.UpdateActivity.Text);
         }
 
+        [Fact]
+        public async void TestGetConversationMemberAsync()
+        {
+            // Arrange
+            var mockObjects = new CloudSkillHandlerTestMocks();            
+            var activity = new Activity(ActivityTypes.Message) { Text = $"Get Member." };
+            var conversationId = await mockObjects.CreateAndApplyConversationIdAsync(activity);
+
+            // Act
+            var sut = new CloudSkillHandler(mockObjects.Adapter.Object, mockObjects.Bot.Object, mockObjects.ConversationIdFactory, mockObjects.Auth.Object);
+            var member = await sut.HandleGetConversationMemberAsync(TestAuthHeader, TestMember.Id, conversationId);
+
+            // Assert
+            Assert.Equal(TestMember.Id, member.Id);
+            Assert.Equal(TestMember.Name, member.Name);
+        }
+
         /// <summary>
         /// Helper class with mocks for adapter, bot and auth needed to instantiate CloudSkillHandler and run tests.
         /// This class also captures the turnContext and activities sent back to the bot and the channel so we can run asserts on them.
@@ -172,6 +196,7 @@ public CloudSkillHandlerTestMocks()
                 Auth = CreateMockBotFrameworkAuthentication();
                 Bot = CreateMockBot();
                 ConversationIdFactory = new TestSkillConversationIdFactory();
+                Client = CreateMockConnectorClient(); 
             }
 
             public SkillConversationIdFactoryBase ConversationIdFactory { get; }
@@ -182,6 +207,8 @@ public CloudSkillHandlerTestMocks()
 
             public Mock<IBot> Bot { get;  }
 
+            public IConnectorClient Client { get; }
+
             // Gets the TurnContext created to call the bot.
             public TurnContext TurnContext { get; private set; }
 
@@ -242,6 +269,8 @@ private Mock<BotAdapter> CreateMockAdapter()
                     {
                         // Create and capture the TurnContext so we can run assertions on it.
                         TurnContext = new TurnContext(adapter.Object, conv.GetContinuationActivity());
+                        TurnContext.TurnState.Add(Client);
+
                         await botCallbackHandler(TurnContext, cancel);
                     });
 
@@ -307,6 +336,21 @@ private Mock<BotFrameworkAuthentication> CreateMockBotFrameworkAuthentication()
                     });
                 return auth;
             }
+
+            private IConnectorClient CreateMockConnectorClient()
+            {
+                var httpResponse = new HttpResponseMessage(System.Net.HttpStatusCode.OK)
+                {
+                    Content = new StringContent(JsonConvert.SerializeObject(TestMember))
+                };
+
+                var httpClient = new Mock<HttpClient>();
+                httpClient.Setup(x => x.SendAsync(It.IsAny<HttpRequestMessage>(), It.IsAny<CancellationToken>())).ReturnsAsync(httpResponse);
+
+                var client = new ConnectorClient(MicrosoftAppCredentials.Empty, httpClient.Object, false);
+
+                return client;
+            }
         }
 
         private class TestSkillConversationIdFactory : SkillConversationIdFactoryBase