from __future__ import annotations

from datetime import UTC, datetime, timedelta

import bcrypt
import jwt

from app.config import settings


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


def verify_password(plain_password: str, hashed_password: str) -> bool:
    try:
        return bcrypt.checkpw(
            plain_password.encode("utf-8"),
            hashed_password.encode("utf-8"),
        )
    except ValueError:
        return False


def create_access_token(subject: str, expires_delta: timedelta | None = None) -> str:
    expire = datetime.now(UTC) + (
        expires_delta
        if expires_delta is not None
        else timedelta(minutes=settings.access_token_expire_minutes)
    )
    payload = {"sub": subject, "exp": expire}
    return jwt.encode(payload, settings.jwt_secret_key, algorithm=settings.jwt_algorithm)


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