from contextlib import asynccontextmanager
from pathlib import Path

from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles

from app.api.routes import pages, status
from app.config import get_settings


def ensure_runtime_dirs() -> None:
    settings = get_settings()
    if settings.sqlite_path is not None:
        settings.sqlite_path.parent.mkdir(parents=True, exist_ok=True)


@asynccontextmanager
async def lifespan(_: FastAPI):
    ensure_runtime_dirs()
    yield


def create_app() -> FastAPI:
    settings = get_settings()
    app = FastAPI(
        title=settings.app_name,
        debug=settings.app_debug,
        version="0.1.0",
        lifespan=lifespan,
        description=(
            "Python rewrite skeleton for the home automation backend. "
            "This stage provides only the foundation for future module migration."
        ),
    )

    static_dir = Path(__file__).parent / "static"
    app.mount("/static", StaticFiles(directory=static_dir), name="static")

    app.include_router(status.router)
    app.include_router(pages.router)
    return app


app = create_app()