From 68861c0744cf32939e4c97c838ea1fc4afc61993 Mon Sep 17 00:00:00 2001
From: Ed_ <edwardgz@gmail.com>
Date: Thu, 26 Feb 2026 20:45:23 -0500
Subject: [PATCH] feat(mma): Decouple UI from API calls using UserRequestEvent
 and AsyncEventQueue

---
 events.py                      |  20 +++++
 gui_2.py                       | 155 ++++++++++++++++++++++-----------
 pyproject.toml                 |   1 +
 requirements.txt               |   8 +-
 tests/test_gui_async_events.py |  78 +++++++++++++++++
 5 files changed, 208 insertions(+), 54 deletions(-)
 create mode 100644 tests/test_gui_async_events.py

diff --git a/events.py b/events.py
index 1882205..450bd11 100644
--- a/events.py
+++ b/events.py
@@ -63,3 +63,23 @@ class AsyncEventQueue:
             A tuple containing (event_name, payload).
         """
         return await self._queue.get()
+
+class UserRequestEvent:
+    """
+    Payload for a user request event.
+    """
+    def __init__(self, prompt: str, stable_md: str, file_items: List[Any], disc_text: str, base_dir: str):
+        self.prompt = prompt
+        self.stable_md = stable_md
+        self.file_items = file_items
+        self.disc_text = disc_text
+        self.base_dir = base_dir
+
+    def to_dict(self) -> Dict[str, Any]:
+        return {
+            "prompt": self.prompt,
+            "stable_md": self.stable_md,
+            "file_items": self.file_items,
+            "disc_text": self.disc_text,
+            "base_dir": self.base_dir
+        }
diff --git a/gui_2.py b/gui_2.py
index 72a9a55..c59e2b8 100644
--- a/gui_2.py
+++ b/gui_2.py
@@ -1,6 +1,7 @@
 # gui_2.py
 import tomli_w
 import threading
+import asyncio
 import time
 import math
 import json
@@ -10,6 +11,7 @@ import uuid
 import requests
 from pathlib import Path
 from tkinter import filedialog, Tk
+from typing import Optional, Callable
 import aggregate
 import ai_client
 from ai_client import ProviderError
@@ -109,11 +111,15 @@ class ConfirmDialog:
         return self._approved, self._script
 
 
-class App:
+class ManualSlopGUI:
     """The main ImGui interface orchestrator for Manual Slop."""
 
     def __init__(self):
         self.config = load_config()
+        self.event_queue = events.AsyncEventQueue()
+        self._loop = asyncio.new_event_loop()
+        self._loop_thread = threading.Thread(target=self._run_event_loop, daemon=True)
+        self._loop_thread.start()
 
         ai_cfg = self.config.get("ai", {})
         self._current_provider: str = ai_cfg.get("provider", "gemini")
@@ -806,6 +812,21 @@ class App:
                 if action == "refresh_api_metrics":
                     self._refresh_api_metrics(task.get("payload", {}))
                 
+                elif action == "handle_ai_response":
+                    payload = task.get("payload", {})
+                    self.ai_response = payload.get("text", "")
+                    self.ai_status = payload.get("status", "done")
+                    self._trigger_blink = True
+                    if self.ui_auto_add_history:
+                        role = payload.get("role", "AI")
+                        with self._pending_history_adds_lock:
+                            self._pending_history_adds.append({
+                                "role": role, 
+                                "content": self.ai_response, 
+                                "collapsed": False, 
+                                "ts": project_manager.now_ts()
+                            })
+
                 elif action == "set_value":
                     item = task.get("item")
                     value = task.get("value")
@@ -944,61 +965,89 @@ class App:
 
     def _handle_generate_send(self):
         """Logic for the 'Gen + Send' action."""
-        send_busy = False
-        with self._send_thread_lock:
-            if self.send_thread and self.send_thread.is_alive():
-                send_busy = True
+        try:
+            md, path, file_items, stable_md, disc_text = self._do_generate()
+            self.last_md = md
+            self.last_md_path = path
+            self.last_file_items = file_items
+        except Exception as e:
+            self.ai_status = f"generate error: {e}"
+            return
+
+        self.ai_status = "sending..."
+        user_msg = self.ui_ai_input
+        base_dir = self.ui_files_base_dir
         
-        if not send_busy:
-            try:
-                md, path, file_items, stable_md, disc_text = self._do_generate()
-                self.last_md = md
-                self.last_md_path = path
-                self.last_file_items = file_items
-            except Exception as e:
-                self.ai_status = f"generate error: {e}"
-                return
+        # Prepare event payload
+        event_payload = events.UserRequestEvent(
+            prompt=user_msg,
+            stable_md=stable_md,
+            file_items=file_items,
+            disc_text=disc_text,
+            base_dir=base_dir
+        )
+        
+        # Push to async queue
+        asyncio.run_coroutine_threadsafe(
+            self.event_queue.put("user_request", event_payload),
+            self._loop
+        )
 
-            self.ai_status = "sending..."
-            user_msg = self.ui_ai_input
-            base_dir = self.ui_files_base_dir
-            csp = filter(bool, [self.ui_global_system_prompt.strip(), self.ui_project_system_prompt.strip()])
-            ai_client.set_custom_system_prompt("\n\n".join(csp))
-            ai_client.set_model_params(self.temperature, self.max_tokens, self.history_trunc_limit)
-            ai_client.set_agent_tools(self.ui_agent_tools)
-            send_md = stable_md
-            send_disc = disc_text
+    def _run_event_loop(self):
+        """Runs the internal asyncio event loop."""
+        asyncio.set_event_loop(self._loop)
+        self._loop.create_task(self._process_event_queue())
+        self._loop.run_forever()
 
-            def do_send():
-                if self.ui_auto_add_history:
-                    with self._pending_history_adds_lock:
-                        self._pending_history_adds.append({"role": "User", "content": user_msg, "collapsed": False, "ts": project_manager.now_ts()})
-                try:
-                    resp = ai_client.send(send_md, user_msg, base_dir, self.last_file_items, send_disc)
-                    self.ai_response = resp
-                    self.ai_status = "done"
-                    self._trigger_blink = True
-                    if self.ui_auto_add_history:
-                        with self._pending_history_adds_lock:
-                            self._pending_history_adds.append({"role": "AI", "content": resp, "collapsed": False, "ts": project_manager.now_ts()})
-                except ProviderError as e:
-                    self.ai_response = e.ui_message()
-                    self.ai_status = "error"
-                    self._trigger_blink = True
-                    if self.ui_auto_add_history:
-                        with self._pending_history_adds_lock:
-                            self._pending_history_adds.append({"role": "Vendor API", "content": self.ai_response, "collapsed": False, "ts": project_manager.now_ts()})
-                except Exception as e:
-                    self.ai_response = f"ERROR: {e}"
-                    self.ai_status = "error"
-                    self._trigger_blink = True
-                    if self.ui_auto_add_history:
-                        with self._pending_history_adds_lock:
-                            self._pending_history_adds.append({"role": "System", "content": self.ai_response, "collapsed": False, "ts": project_manager.now_ts()})
+    async def _process_event_queue(self):
+        """Listens for and processes events from the AsyncEventQueue."""
+        while True:
+            event_name, payload = await self.event_queue.get()
+            
+            if event_name == "user_request":
+                # Handle the request (simulating what was previously in do_send thread)
+                self._handle_request_event(payload)
+            elif event_name == "response":
+                # Handle AI response event
+                with self._pending_gui_tasks_lock:
+                    self._pending_gui_tasks.append({
+                        "action": "handle_ai_response",
+                        "payload": payload
+                    })
+    
+    def _handle_request_event(self, event: events.UserRequestEvent):
+        """Processes a UserRequestEvent by calling the AI client."""
+        if self.ui_auto_add_history:
+            with self._pending_history_adds_lock:
+                self._pending_history_adds.append({
+                    "role": "User", 
+                    "content": event.prompt, 
+                    "collapsed": False, 
+                    "ts": project_manager.now_ts()
+                })
+        
+        csp = filter(bool, [self.ui_global_system_prompt.strip(), self.ui_project_system_prompt.strip()])
+        ai_client.set_custom_system_prompt("\n\n".join(csp))
+        ai_client.set_model_params(self.temperature, self.max_tokens, self.history_trunc_limit)
+        ai_client.set_agent_tools(self.ui_agent_tools)
 
-            with self._send_thread_lock:
-                self.send_thread = threading.Thread(target=do_send, daemon=True)
-                self.send_thread.start()
+        try:
+            resp = ai_client.send(event.stable_md, event.prompt, event.base_dir, event.file_items, event.disc_text)
+            # Emit response event
+            asyncio.run_coroutine_threadsafe(
+                self.event_queue.put("response", {"text": resp, "status": "done"}),
+                self._loop
+            )
+        except ProviderError as e:
+            asyncio.run_coroutine_threadsafe(
+                self.event_queue.put("response", {"text": e.ui_message(), "status": "error", "role": "Vendor API"}),
+                self._loop
+            )
+        except Exception as e:
+            asyncio.run_coroutine_threadsafe(
+                self.event_queue.put("response", {"text": f"ERROR: {e}", "status": "error", "role": "System"}),
+                self._loop
+            )
 
     def _test_callback_func_write_to_file(self, data: str):
         """A dummy function that a custom_callback would execute for testing."""
@@ -2546,7 +2595,7 @@ class App:
         session_logger.close_session()
 
 def main():
-    app = App()
+    app = ManualSlopGUI()
     app.run()
 
 if __name__ == "__main__":
diff --git a/pyproject.toml b/pyproject.toml
index 65c7e22..17e8f87 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,6 +20,7 @@ dependencies = [
 dev = [
     "pytest>=9.0.2",
     "pytest-cov>=7.0.0",
+    "pytest-asyncio>=0.25.3",
 ]
 
 [tool.pytest.ini_options]
diff --git a/requirements.txt b/requirements.txt
index c8efffc..536bece 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1115,7 +1115,12 @@ pygments==2.19.2 \
 pytest==9.0.2 \
     --hash=sha256:711ffd45bf766d5264d487b917733b453d917afd2b0ad65223959f59089f875b \
     --hash=sha256:75186651a92bd89611d1d9fc20f0b4345fd827c41ccd5c299a868a05d70edf11
-    # via pytest-cov
+    # via
+    #   pytest-asyncio
+    #   pytest-cov
+pytest-asyncio==1.3.0 \
+    --hash=sha256:611e26147c7f77640e6d0a92a38ed17c3e9848063698d5c93d5aa7aa11cebff5 \
+    --hash=sha256:d7f52f36d231b80ee124cd216ffb19369aa168fc10095013c6b014a34d3ee9e5
 pytest-cov==7.0.0 \
     --hash=sha256:33c97eda2e049a0c5298e91f519302a1334c26ac65c1a483d6206fd458361af1 \
     --hash=sha256:3b8e9558b16cc1479da72058bdecf8073661c7f57f7d3c5f22a1c23507f2d861
@@ -1249,6 +1254,7 @@ typing-extensions==4.15.0 \
     #   google-genai
     #   pydantic
     #   pydantic-core
+    #   pytest-asyncio
     #   starlette
     #   typing-inspection
 typing-inspection==0.4.2 \
diff --git a/tests/test_gui_async_events.py b/tests/test_gui_async_events.py
new file mode 100644
index 0000000..953e743
--- /dev/null
+++ b/tests/test_gui_async_events.py
@@ -0,0 +1,78 @@
+import pytest
+from unittest.mock import MagicMock, patch, AsyncMock
+import asyncio
+from gui_2 import ManualSlopGUI
+from events import UserRequestEvent
+
+@pytest.fixture
+def mock_gui():
+    with patch('gui_2.load_config', return_value={
+        "ai": {"provider": "gemini", "model": "model-1"},
+        "projects": {"paths": [], "active": ""},
+        "gui": {"show_windows": {}}
+    }):
+        with patch('gui_2.project_manager.load_project', return_value={}):
+            with patch('gui_2.project_manager.migrate_from_legacy_config', return_value={}):
+                with patch('gui_2.project_manager.save_project'):
+                    with patch('gui_2.session_logger.open_session'):
+                        with patch('gui_2.ManualSlopGUI._init_ai_and_hooks'):
+                            with patch('gui_2.ManualSlopGUI._fetch_models'):
+                                gui = ManualSlopGUI()
+                                return gui
+
+def test_handle_generate_send_pushes_event(mock_gui):
+    # Mock _do_generate to return sample data
+    mock_gui._do_generate = MagicMock(return_value=(
+        "full_md", "path", [], "stable_md", "disc_text"
+    ))
+    mock_gui.ui_ai_input = "test prompt"
+    mock_gui.ui_files_base_dir = "."
+    
+    # Mock event_queue.put
+    mock_gui.event_queue.put = MagicMock()
+    
+    # We need to mock asyncio.run_coroutine_threadsafe to immediately execute
+    with patch('asyncio.run_coroutine_threadsafe') as mock_run:
+        mock_gui._handle_generate_send()
+        
+        # Verify run_coroutine_threadsafe was called
+        assert mock_run.called
+        
+        # Verify the call to event_queue.put was correct
+        # This is a bit tricky since the first arg to run_coroutine_threadsafe 
+        # is the coroutine returned by event_queue.put().
+        # Let's verify that the call to put occurred.
+        mock_gui.event_queue.put.assert_called_once()
+        args, kwargs = mock_gui.event_queue.put.call_args
+        assert args[0] == "user_request"
+        event = args[1]
+        assert isinstance(event, UserRequestEvent)
+        assert event.prompt == "test prompt"
+        assert event.stable_md == "stable_md"
+        assert event.disc_text == "disc_text"
+        assert event.base_dir == "."
+
+def test_user_request_event_payload():
+    payload = UserRequestEvent(
+        prompt="hello",
+        stable_md="md",
+        file_items=[],
+        disc_text="disc",
+        base_dir="."
+    )
+    
+    d = payload.to_dict()
+    assert d["prompt"] == "hello"
+    assert d["stable_md"] == "md"
+    assert d["file_items"] == []
+    assert d["disc_text"] == "disc"
+    assert d["base_dir"] == "."
+
+@pytest.mark.asyncio
+async def test_async_event_queue():
+    from events import AsyncEventQueue
+    q = AsyncEventQueue()
+    await q.put("test_event", {"data": 123})
+    name, payload = await q.get()
+    assert name == "test_event"
+    assert payload["data"] == 123