feat: stage4 — SSE event streamer and ResultManager

src/gps_denied/api/deps.py

@@ -1,5 +1,3 @@
-"""FastAPI Dependencies."""
-
 from collections.abc import AsyncGenerator
 from typing import Annotated
 
@@ -7,18 +5,24 @@ from fastapi import Depends
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from gps_denied.core.processor import FlightProcessor
+from gps_denied.core.sse import SSEEventStreamer
 from gps_denied.db.engine import get_session
 from gps_denied.db.repository import FlightRepository
 
+# Singleton instance of SSE Event Streamer
+_sse_streamer = SSEEventStreamer()
+
+def get_sse_streamer() -> SSEEventStreamer:
+    return _sse_streamer
 
 async def get_repository(session: AsyncSession = Depends(get_session)) -> FlightRepository:
     return FlightRepository(session)
 
-
 async def get_flight_processor(
     repo: FlightRepository = Depends(get_repository),
+    sse: SSEEventStreamer = Depends(get_sse_streamer),
 ) -> FlightProcessor:
-    return FlightProcessor(repo)
+    return FlightProcessor(repo, sse)
 
 
 # Type aliases for cleaner router definitions