from datetime import datetime, timedelta, timezone

import jwt
from pwdlib import PasswordHash

from app.core.config import settings


password_hasher = PasswordHash.recommended()

JWT_ALGORITHM = "HS256"
ACCESS_TOKEN_EXPIRE_MINUTES = 60


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


def verify_password(password: str, password_hash: str) -> bool:
    return password_hasher.verify(password, password_hash)


def create_access_token(subject: str, session_version: int = 0) -> str:
    expires_at = datetime.now(timezone.utc) + timedelta(
        minutes=ACCESS_TOKEN_EXPIRE_MINUTES
    )

    payload = {
        "sub": subject,
        "sv": session_version,
        "exp": expires_at,
    }

    return jwt.encode(
        payload,
        settings.JWT_SECRET,
        algorithm=JWT_ALGORITHM,
    )


def decode_access_token(token: str) -> dict:
    return jwt.decode(
        token,
        settings.JWT_SECRET,
        algorithms=[JWT_ALGORITHM],
    )