from contextlib import asynccontextmanager
from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware
from fastapi.responses import RedirectResponse
from routers.upload import router as upload_router
from routers.recommend import router as recommend_router
from routers.session import router as session_router
import services.embedding as emb


@asynccontextmanager
async def lifespan(app: FastAPI):
    emb.load_model()
    yield


app = FastAPI(title="Filmatch API", version="0.5.0", lifespan=lifespan)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_methods=["*"],
    allow_headers=["*"],
)
@app.get("/")
def read_root():
    return RedirectResponse(url="/docs")

app.include_router(upload_router)
app.include_router(recommend_router)
app.include_router(session_router)


@app.get("/health")
def health():
    return {"status": "ok", "version": "0.5.0", "model_loaded": emb._model is not None}