from datetime import datetime, timedelta, timezone

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

from app.core.config import settings

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


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


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


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


def decode_token(token: str) -> str | None:
    try:
        payload = jwt.decode(token, settings.secret_key, algorithms=[settings.algorithm])
        sub = payload.get("sub")
        return str(sub) if sub is not None else None
    except JWTError:
        return None
