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

from app.api import api_router
from app.config import get_settings
from app.db import SessionLocal, init_db
from app.services.user_service import ensure_default_admin


def create_app() -> FastAPI:
    settings = get_settings()
    app = FastAPI(title=settings.app_name)
    app.add_middleware(
        CORSMiddleware,
        allow_origins=settings.cors_origins,
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )
    app.include_router(api_router)

    @app.on_event("startup")
    def startup() -> None:
        init_db()
        db = SessionLocal()
        try:
            ensure_default_admin(db)
            db.commit()
        finally:
            db.close()

    @app.get("/health")
    def health() -> dict:
        return {"status": "ok", "app": settings.app_name}

    return app


app = create_app()