from datetime import datetime, timedelta, timezone

import bcrypt
from jose import jwt

from app.core.config import settings


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


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


def create_access_token(subject: str) -> str:
    now = datetime.now(timezone.utc)
    expire = now + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
    return jwt.encode(
        {"sub": subject, "exp": expire, "iat": now},
        settings.JWT_PRIVATE_KEY,
        algorithm=settings.ALGORITHM,
    )


def decode_access_token(token: str) -> str:
    payload = jwt.decode(
        token,
        settings.JWT_PUBLIC_KEY,
        algorithms=[settings.ALGORITHM],
    )
    return payload["sub"]