from fastapi import FastAPI
from contextlib import asynccontextmanager
from typing import AsyncGenerator

from app.core.config import settings
from app.db.session import engine
from app.db.base import SQLModel
from app.api.routers import auth, users


def create_app() -> FastAPI:
    app = FastAPI(title="FastAPI Account System")
    app.include_router(auth.router, prefix="/auth", tags=["auth"])
    app.include_router(users.router, prefix="/users", tags=["users"])

    @asynccontextmanager
    async def lifespan(app) -> AsyncGenerator[None, None]:
        # For quick local runs create tables automatically. In production use Alembic migrations.
        SQLModel.metadata.create_all(engine)
        yield

    app.router.lifespan_context = lifespan
    return app


app = create_app()