Addidng chat_listener function for Twitch, adding custom overlay template for testing.

main.py

@@ -8,11 +8,12 @@ from contextlib import asynccontextmanager
 from sqlalchemy.orm import Session
 
 import models
-from database import engine
+from database import engine, SessionLocal
 import auth # Import the new auth module
 import schemas
 from starlette.responses import Response
 from config import settings # Import settings to get the secret key
+from listener_manager import ListenerManager
 
 # --- Absolute Path Configuration ---
 # Get the absolute path of the directory where this file is located
@@ -24,10 +25,25 @@ TEMPLATES_DIR = os.path.join(BASE_DIR, "templates")
 async def lifespan(app: FastAPI):
     # This code runs on startup
     print("Application startup: Creating database tables...")
+    app.state.listener_manager = ListenerManager()
     models.Base.metadata.create_all(bind=engine)
     print("Application startup: Database tables created.")
+
+    # Start listeners for all existing users
+    db = SessionLocal()
+    users = db.query(models.User).all()
+    db.close()
+    for user in users:
+        await app.state.listener_manager.start_listener_for_user(user)
+
     yield
-    # Code below yield runs on shutdown, if needed
+    
+    # This code runs on shutdown
+    print("Application shutdown: Stopping all listeners...")
+    manager = app.state.listener_manager
+    # Create a copy of keys to avoid runtime errors from changing dict size
+    for user_id in list(manager.active_listeners.keys()):
+        await manager.stop_listener_for_user(user_id)
 
 app = FastAPI(lifespan=lifespan)