from datetime import datetime, timedelta, timezone
from typing import Optional

import bcrypt
from jose import JWTError, jwt

from .config import get_settings

settings = get_settings()


def verify_password(plain: str, hashed: str) -> bool:
    return bcrypt.checkpw(plain.encode(), hashed.encode())


def hash_password(password: str) -> str:
    return bcrypt.hashpw(password.encode(), bcrypt.gensalt()).decode()


def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
    to_encode = data.copy()
    expire = datetime.now(timezone.utc) + (
        expires_delta or timedelta(minutes=settings.jwt_access_token_expire_minutes)
    )
    to_encode["exp"] = expire
    return jwt.encode(to_encode, settings.jwt_secret_key, algorithm=settings.jwt_algorithm)


def decode_access_token(token: str) -> Optional[dict]:
    try:
        return jwt.decode(token, settings.jwt_secret_key, algorithms=[settings.jwt_algorithm])
    except JWTError:
        return None