"""Lectura segura de datos ASUSWRT mediante la API web del router."""

import asyncio
import json
import os

import aiohttp
from asusrouter import AsusData, AsusRouter


def _load_env():
    values = {}
    path = os.path.join(os.path.dirname(os.path.abspath(__file__)), ".env")
    try:
        with open(path) as stream:
            for line in stream:
                line = line.strip()
                if line and not line.startswith("#") and "=" in line:
                    key, value = line.split("=", 1)
                    values[key.strip()] = value.strip()
    except OSError:
        pass
    return values


FILE_ENV = _load_env()


def _env(name, default=""):
    return os.getenv(name, FILE_ENV.get(name, default)).strip()


async def _parental_data():
    username = _env("ASUS_USERNAME")
    password = _env("ASUS_PASSWORD")
    if not username or not password:
        raise RuntimeError(
            "Falta ASUS_USERNAME o ASUS_PASSWORD en el .env de la Raspberry"
        )
    session = aiohttp.ClientSession()
    router = AsusRouter(
        hostname=_env("ASUS_ROUTER_IP", "192.168.50.1"),
        username=username,
        password=password,
        session=session,
    )
    try:
        await router.async_connect()
        return await router.async_get_data(AsusData.PARENTAL_CONTROL, force=True)
    finally:
        await router.async_disconnect()
        await session.close()


def parental_status():
    data = asyncio.run(_parental_data())
    return json.dumps(data, ensure_ascii=False, indent=2, default=str)