Handle settings logs agent failures

MeetingAssistant.Tests/WorkflowRulesEditorTests.cs

@@ -853,6 +853,52 @@ public sealed class WorkflowRulesEditorTests
         Assert.Equal("Updated rules.", viewModel.Messages[1].Content);
     }
 
+    [Fact]
+    public async Task ViewModelShowsAgentErrorWhenRequestTimesOut()
+    {
+        var viewModel = new WorkflowRulesEditorChatViewModel(
+            new ThrowingRulesEditorPipeline(new TaskCanceledException("The request timed out.")))
+        {
+            Draft = "check logs"
+        };
+
+        await viewModel.SendAsync();
+
+        Assert.False(viewModel.IsThinking);
+        Assert.Equal("", viewModel.Draft);
+        Assert.Equal(
+            [
+                new WorkflowRulesEditorChatMessage(WorkflowRulesEditorChatRole.User, "check logs"),
+                new WorkflowRulesEditorChatMessage(
+                    WorkflowRulesEditorChatRole.Agent,
+                    "Settings and logs failed: The request timed out.")
+            ],
+            viewModel.Messages.ToArray());
+    }
+
+    [Fact]
+    public async Task ViewModelShowsReconnectStatusReportedByPipeline()
+    {
+        var pipeline = new StatusReportingRulesEditorPipeline("Updated rules.");
+        var viewModel = new WorkflowRulesEditorChatViewModel(pipeline)
+        {
+            Draft = "check logs"
+        };
+
+        var sendTask = viewModel.SendAsync();
+        await pipeline.Reported.Task.WaitAsync(TimeSpan.FromSeconds(2));
+
+        Assert.True(viewModel.IsThinking);
+        Assert.Equal("Reconnecting...", viewModel.ActivityMessage);
+
+        pipeline.Release.SetResult();
+        await sendTask.WaitAsync(TimeSpan.FromSeconds(2));
+
+        Assert.False(viewModel.IsThinking);
+        Assert.Equal("Thinking...", viewModel.ActivityMessage);
+        Assert.Equal("Updated rules.", viewModel.Messages[1].Content);
+    }
+
     [Theory]
     [InlineData(0, 500, 0, true)]
     [InlineData(0, 500, 400, true)]
@@ -1149,7 +1195,8 @@ public sealed class WorkflowRulesEditorTests
         public async Task<WorkflowRulesEditorChatResult> SendAsync(
             IReadOnlyList<WorkflowRulesEditorChatMessage> conversation,
             string userMessage,
-            CancellationToken cancellationToken)
+            CancellationToken cancellationToken,
+            Action<string>? statusChanged = null)
         {
             Started.SetResult();
             await Release.Task.WaitAsync(cancellationToken);
@@ -1162,6 +1209,56 @@ public sealed class WorkflowRulesEditorTests
         }
     }
 
+    private sealed class ThrowingRulesEditorPipeline : IWorkflowRulesEditorChatPipeline
+    {
+        private readonly Exception exception;
+
+        public ThrowingRulesEditorPipeline(Exception exception)
+        {
+            this.exception = exception;
+        }
+
+        public Task<WorkflowRulesEditorChatResult> SendAsync(
+            IReadOnlyList<WorkflowRulesEditorChatMessage> conversation,
+            string userMessage,
+            CancellationToken cancellationToken,
+            Action<string>? statusChanged = null)
+        {
+            throw exception;
+        }
+    }
+
+    private sealed class StatusReportingRulesEditorPipeline : IWorkflowRulesEditorChatPipeline
+    {
+        private readonly string response;
+
+        public StatusReportingRulesEditorPipeline(string response)
+        {
+            this.response = response;
+        }
+
+        public TaskCompletionSource Reported { get; } = new(TaskCreationOptions.RunContinuationsAsynchronously);
+
+        public TaskCompletionSource Release { get; } = new(TaskCreationOptions.RunContinuationsAsynchronously);
+
+        public async Task<WorkflowRulesEditorChatResult> SendAsync(
+            IReadOnlyList<WorkflowRulesEditorChatMessage> conversation,
+            string userMessage,
+            CancellationToken cancellationToken,
+            Action<string>? statusChanged = null)
+        {
+            statusChanged?.Invoke("Reconnecting...");
+            Reported.SetResult();
+            await Release.Task.WaitAsync(cancellationToken);
+            return new WorkflowRulesEditorChatResult(
+                response,
+                conversation
+                    .Append(new WorkflowRulesEditorChatMessage(WorkflowRulesEditorChatRole.User, userMessage))
+                    .Append(new WorkflowRulesEditorChatMessage(WorkflowRulesEditorChatRole.Agent, response))
+                    .ToList());
+        }
+    }
+
     private sealed class CapturingLogger : ILogger
     {
         public List<string> Messages { get; } = [];