from contextlib import asynccontextmanager

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

from .config import get_settings
from .database import Base, SessionLocal, engine
from .routers import (
    auth,
    groups,
    locations,
    products,
    settings as settings_router,
    stock,
    users,
    views,
)
from .seed import ensure_first_admin

settings = get_settings()


@asynccontextmanager
async def lifespan(app: FastAPI):
    # Tabellen anlegen (MVP: create_all statt Alembic-Migrationen).
    Base.metadata.create_all(bind=engine)
    db = SessionLocal()
    try:
        ensure_first_admin(db)
    finally:
        db.close()
    yield


app = FastAPI(title="Pantry – Lebensmittel-Lagerverwaltung", version="1.0.0", lifespan=lifespan)

origins = ["*"] if settings.cors_origins.strip() == "*" else [
    o.strip() for o in settings.cors_origins.split(",") if o.strip()
]
app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)


@app.get("/health", tags=["meta"])
def health() -> dict:
    return {"status": "ok"}


app.include_router(auth.router)
app.include_router(users.router)
app.include_router(products.router)
app.include_router(stock.router)
app.include_router(locations.router)
app.include_router(groups.router)
app.include_router(views.router)
app.include_router(settings_router.router)