from contextlib import asynccontextmanager

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from core.schemas import HealthResponse
from logger import logger
from middlewares.exception_handlers import catch_exception_middleware
from routes.ask_question import router as ask_router
from routes.load_hf_datasets import router as hf_router
from routes.upload_pdfs import router as upload_router


@asynccontextmanager
async def lifespan(app: FastAPI):
    logger.info("CureMind API starting")
    yield
    logger.info("CureMind API stopped")


app = FastAPI(
    title="CureMind API",
    description=(
        "AI-powered medical information assistant. "
        "Combines Retrieval-Augmented Generation with curated medical datasets "
        "(PubMedQA, USMLE, mental health) and user-uploaded documents."
    ),
    version="1.0.0",
    lifespan=lifespan,
)

app.add_middleware(
    CORSMiddleware,
    allow_origins=["*"],
    allow_methods=["*"],
    allow_headers=["*"],
)

app.middleware("http")(catch_exception_middleware)


@app.get("/health", response_model=HealthResponse, tags=["System"])
async def health_check():
    return HealthResponse(status="healthy")


app.include_router(upload_router, tags=["Documents"])
app.include_router(ask_router, tags=["Chat"])
app.include_router(hf_router, tags=["Datasets"])