from typing import Dict, Optional

from fastapi import Depends, HTTPException, Request
from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer

import app.container as container

bearer_scheme = HTTPBearer(auto_error=False)


def auth_dependency(credentials: Optional[HTTPAuthorizationCredentials] = Depends(bearer_scheme)) -> None:
    if credentials is None:
        raise HTTPException(status_code=401, detail={"code": "unauthorized", "message": "Invalid auth header."})

    if credentials.credentials != container.app_state.settings.token:
        raise HTTPException(status_code=401, detail={"code": "unauthorized", "message": "Invalid bearer token."})


def caller_identity(request: Request) -> Dict[str, str]:
    return {
        "ip": request.client.host if request.client else "unknown",
        "request_id": request.headers.get("x-request-id", ""),
    }