"""Optional API key protection."""

from __future__ import annotations

from fastapi import HTTPException, Request, status

from app.core.config import settings


async def require_api_key(request: Request) -> None:
    """Require X-API-Key or Bearer token when STOCK_DATA_API_KEY is configured."""
    if not settings.api_key:
        return

    header_key = request.headers.get("X-API-Key", "")
    auth = request.headers.get("Authorization", "")
    bearer_key = auth.removeprefix("Bearer ").strip() if auth.startswith("Bearer ") else ""
    if header_key == settings.api_key or bearer_key == settings.api_key:
        return

    raise HTTPException(
        status_code=status.HTTP_401_UNAUTHORIZED,
        detail="Missing or invalid API key",
    )