ci: consolidate platform pipelines and test prerequisites on macOS support

MeetingAssistant/MacOs/MacOsWorkflowRulesEditorWindowService.cs

@@ -7,10 +7,14 @@ namespace MeetingAssistant.MacOs;
 public sealed class MacOsWorkflowRulesEditorWindowService : IWorkflowRulesEditorWindowService
 {
     private readonly IOptions<MeetingAssistantOptions> options;
+    private readonly Func<MacOsWorkflowRulesEditorSessions> getSessions;
 
-    public MacOsWorkflowRulesEditorWindowService(IOptions<MeetingAssistantOptions> options)
+    public MacOsWorkflowRulesEditorWindowService(
+        IOptions<MeetingAssistantOptions> options,
+        Func<MacOsWorkflowRulesEditorSessions> getSessions)
     {
         this.options = options;
+        this.getSessions = getSessions;
     }
 
     public void Show()
@@ -31,59 +35,82 @@ public sealed class MacOsWorkflowRulesEditorWindowService : IWorkflowRulesEditor
 
     public void ShowWithPrompt(string initialPrompt)
     {
-        throw new PlatformNotSupportedException(
-            "Automatic workflow-change conversations require the Windows approval UI. Use the interactive macOS agent instead.");
+        getSessions().OpenWithPrompt(initialPrompt);
     }
 }
 
 public sealed class MacOsWorkflowRulesEditorSession
 {
     private readonly WorkflowRulesEditorChatViewModel viewModel;
+    private readonly CancellationToken applicationStopping;
     private readonly SemaphoreSlim sendLock = new(1, 1);
+    private MacOsWorkflowRulesEditorChatResponse snapshot = new([], false);
 
-    public MacOsWorkflowRulesEditorSession(WorkflowRulesEditorChatViewModel viewModel)
+    public MacOsWorkflowRulesEditorSession(
+        WorkflowRulesEditorChatViewModel viewModel,
+        CancellationToken applicationStopping = default)
     {
         this.viewModel = viewModel;
+        this.applicationStopping = applicationStopping;
     }
 
-    public async Task<MacOsWorkflowRulesEditorChatResponse> SendAsync(
+    public Task<MacOsWorkflowRulesEditorChatResponse> SendAsync(
         string? message,
         CancellationToken cancellationToken)
     {
+        cancellationToken.ThrowIfCancellationRequested();
         if (string.IsNullOrWhiteSpace(message))
         {
-            return Snapshot();
+            return Task.FromResult(GetSnapshot());
         }
 
-        await sendLock.WaitAsync(cancellationToken);
+        // The response connection controls only its wait; accepted agent work belongs to the application.
+        return SendCoreAsync(message.Trim()).WaitAsync(cancellationToken);
+    }
+
+    public MacOsWorkflowRulesEditorChatResponse GetSnapshot() => Volatile.Read(ref snapshot);
+
+    private async Task<MacOsWorkflowRulesEditorChatResponse> SendCoreAsync(string message)
+    {
+        await sendLock.WaitAsync(applicationStopping);
         try
         {
-            viewModel.Draft = message;
-            await viewModel.SendAsync(cancellationToken);
-            return Snapshot();
+            applicationStopping.ThrowIfCancellationRequested();
+            var messages = GetSnapshot().Messages
+                .Append(new MacOsWorkflowRulesEditorMessage("user", message))
+                .ToArray();
+            Volatile.Write(ref snapshot, new MacOsWorkflowRulesEditorChatResponse(
+                Array.AsReadOnly(messages), true));
+            try
+            {
+                // Dispatch the agent away from the caller so opening a window or processing a decision stays responsive.
+                await Task.Run(() => viewModel.SendPromptAsync(message, applicationStopping), applicationStopping);
+            }
+            finally
+            {
+                var completedMessages = viewModel.Messages
+                    .Where(item => item.Kind == WorkflowRulesEditorConversationItemKind.Message)
+                    .Select(item => new MacOsWorkflowRulesEditorMessage(
+                        item.Message!.Role.ToString().ToLowerInvariant(),
+                        item.Message.Content))
+                    .ToArray();
+                Volatile.Write(ref snapshot, new MacOsWorkflowRulesEditorChatResponse(
+                    Array.AsReadOnly(completedMessages), false));
+            }
+            return GetSnapshot();
         }
         finally
         {
             sendLock.Release();
         }
     }
-
-    private MacOsWorkflowRulesEditorChatResponse Snapshot()
-    {
-        return new MacOsWorkflowRulesEditorChatResponse(
-            viewModel.Messages
-                .Where(item => item.Kind == WorkflowRulesEditorConversationItemKind.Message)
-                .Select(item => new MacOsWorkflowRulesEditorMessage(
-                    item.Message!.Role.ToString().ToLowerInvariant(),
-                    item.Message.Content))
-                .ToArray());
-    }
 }
 
 public sealed record MacOsWorkflowRulesEditorChatRequest(string? Message);
 
 public sealed record MacOsWorkflowRulesEditorChatResponse(
-    IReadOnlyList<MacOsWorkflowRulesEditorMessage> Messages);
+    IReadOnlyList<MacOsWorkflowRulesEditorMessage> Messages,
+    bool IsThinking = false);
 
 public sealed record MacOsWorkflowRulesEditorMessage(string Role, string Content);
 
@@ -126,6 +153,13 @@ public static class MacOsWorkflowRulesEditorPage
             const prompt = document.querySelector('#prompt');
             const send = document.querySelector('#send');
             const messages = document.querySelector('#messages');
+            const session = new URLSearchParams(location.search).get('session');
+            const chatUrl = '/diagnostics/settings-and-logs/chat' + (session ? '?session=' + encodeURIComponent(session) : '');
+            let submitting = false;
+            let thinking = false;
+            let refreshing = false;
+            let available = true;
+            let refreshTimer;
             const render = items => {
               messages.replaceChildren(...items.map(item => {
                 const card = document.createElement('div');
@@ -135,22 +169,57 @@ public static class MacOsWorkflowRulesEditorPage
               }));
               messages.scrollTop = messages.scrollHeight;
             };
+            const update = body => {
+              render(body.messages);
+              thinking = !!body.isThinking;
+              send.disabled = submitting || thinking;
+            };
+            const showError = text => {
+              const card = document.createElement('div');
+              card.className = 'message agent';
+              card.textContent = text;
+              messages.append(card);
+            };
+            const refresh = async () => {
+              if (refreshing || !available) return;
+              clearTimeout(refreshTimer);
+              refreshing = true;
+              try {
+                const response = await fetch(chatUrl, {cache: 'no-store'});
+                if (!response.ok) throw new Error('This conversation is no longer available.');
+                update(await response.json());
+              } catch (error) {
+                available = false;
+                send.disabled = true;
+                showError(error.message);
+              } finally {
+                refreshing = false;
+                if (available && (thinking || submitting)) refreshTimer = setTimeout(refresh, 300);
+              }
+            };
             form.addEventListener('submit', async event => {
               event.preventDefault();
               const message = prompt.value.trim();
-              if (!message) return;
+              if (!message || submitting || thinking || !available) return;
               prompt.value = '';
+              submitting = true;
               send.disabled = true;
               try {
-                const response = await fetch('/diagnostics/settings-and-logs/chat', {
+                const responseTask = fetch(chatUrl, {
                   method: 'POST',
                   headers: {'content-type': 'application/json'},
                   body: JSON.stringify({message})
                 });
-                const body = await response.json();
-                render(body.messages);
+                void refresh();
+                const response = await responseTask;
+                if (!response.ok) throw new Error('The message could not be sent.');
+                update(await response.json());
+              } catch (error) {
+                showError(error.message);
               } finally {
-                send.disabled = false;
+                submitting = false;
+                send.disabled = !available || thinking;
+                void refresh();
                 prompt.focus();
               }
             });
@@ -160,6 +229,7 @@ public static class MacOsWorkflowRulesEditorPage
                 form.requestSubmit();
               }
             });
+            void refresh();
           </script>
         </body>
         </html>