from datetime import datetime, timedelta, timezone

import bcrypt
from jose import JWTError, jwt

from app.config import settings


def hash_password(password: str) -> str:
    return bcrypt.hashpw(password.encode("utf-8"), bcrypt.gensalt()).decode("utf-8")


def verify_password(plain: str, hashed: str) -> bool:
    return bcrypt.checkpw(plain.encode("utf-8"), hashed.encode("utf-8"))


def create_access_token(data: dict) -> str:
    to_encode = data.copy()
    expire = datetime.now(timezone.utc) + timedelta(hours=settings.jwt_expiry_hours)
    to_encode.update({"exp": expire})
    return jwt.encode(to_encode, settings.jwt_secret, algorithm=settings.jwt_algorithm)


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