"""Application factory and wiring. No logic lives here."""

from pathlib import Path

from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles

from app.config import settings

FRONTEND_DIST = Path(__file__).parent / "static"


def create_app() -> FastAPI:
    """Build the FastAPI app: API routes plus the built SPA on one port."""
    app = FastAPI(title="discovery-by-llm", docs_url=None, redoc_url=None)

    @app.get("/api/health")
    def health() -> dict[str, str]:
        return {"status": "ok", "mode": settings.app_mode}

    if FRONTEND_DIST.is_dir():
        app.mount("/", StaticFiles(directory=FRONTEND_DIST, html=True), name="spa")

    return app


app = create_app()