from datetime import datetime, timedelta
from typing import Optional

from jose import jwt, JWTError
from passlib.context import CryptContext

from .config import settings

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

ALGORITHM = "HS256"


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


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


def create_access_token(data: dict, expires_minutes: Optional[int] = None) -> str:
    to_encode = data.copy()
    expire = datetime.utcnow() + timedelta(
        minutes=expires_minutes or settings.access_token_expire_minutes
    )
    to_encode.update({"exp": expire})
    return jwt.encode(to_encode, settings.secret_key, algorithm=ALGORITHM)


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