"""Password hashing and JWT helpers."""
from __future__ import annotations

from datetime import datetime, timedelta, timezone

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

from app.config import settings

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


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(subject: str, role: str) -> str:
    expire = datetime.now(timezone.utc) + timedelta(minutes=settings.access_token_expire_minutes)
    payload = {"sub": subject, "role": role, "exp": expire}
    return jwt.encode(payload, settings.secret_key, algorithm=settings.algorithm)


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