import bcrypt
from jose import JWTError, jwt
from datetime import datetime, timedelta, timezone
from . import config


def hash_password(password: str) -> str:
    return bcrypt.hashpw(password.encode(), bcrypt.gensalt(12)).decode()


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


def create_access_token(user_id: int, username: str, role: str) -> str:
    payload = {
        "sub": str(user_id),
        "username": username,
        "role": role,
        "exp": datetime.now(timezone.utc) + timedelta(hours=config.TOKEN_EXPIRE_HOURS),
    }
    return jwt.encode(payload, config.SECRET_KEY, algorithm=config.ALGORITHM)


def decode_token(token: str) -> dict:
    return jwt.decode(token, config.SECRET_KEY, algorithms=[config.ALGORITHM])