from __future__ import annotations

from fastapi import Depends, HTTPException, Request, status
from passlib.context import CryptContext

from config import get_settings

pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")


def verify_password(plain: str, hashed: str) -> bool:
    return pwd_context.verify(plain, hashed)


def hash_password(password: str) -> str:
    return pwd_context.hash(password)


def check_admin_credentials(username: str, password: str) -> bool:
    settings = get_settings()
    return username == settings.admin_username and password == settings.admin_password


def get_current_admin(request: Request) -> str:
    user = request.session.get("admin")
    if not user:
        raise HTTPException(
            status_code=status.HTTP_401_UNAUTHORIZED,
            detail="Требуется авторизация",
        )
    return user


def require_admin_page(request: Request) -> str | None:
    return request.session.get("admin")