feat(api): add backend

routes and WebSockets

services/api/app/main.py

@@ -0,0 +1,46 @@
+from fastapi import FastAPI
+import asyncio
+from contextlib import asynccontextmanager, suppress
+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+from app.api.v1.router import router as v1_router
+from app.core.config import settings
+from app.ws.router import router as ws_router
+from app.ws.broadcaster import audio_live_broadcaster
+
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    task = asyncio.create_task(audio_live_broadcaster())
+    try:
+        yield
+    finally:
+        task.cancel()
+        with suppress(asyncio.CancelledError):
+            await task
+
+
+def create_app() -> FastAPI:
+    app = FastAPI(
+        title="Audio Analyzer API",
+        version="1.0.0",
+        docs_url="/api/docs",
+        redoc_url="/api/redoc",
+        lifespan=lifespan,
+    )
+
+    app.add_middleware(
+        CORSMiddleware,
+        allow_origins=["*"],
+        allow_credentials=True,
+        allow_methods=["*"],
+        allow_headers=["*"],
+    )
+
+    app.include_router(v1_router, prefix=settings.API_V1_PREFIX)
+    app.include_router(ws_router)  # /ws/live
+    return app
+
+
+app = create_app()