from http import HTTPStatus

import yaml
import aiohttp

config = yaml.safe_load(open('../config.yaml', 'r', encoding='utf-8'))

async def create_chart(
    from_currency: str,
    conv_currency: str,
    period: str) -> (dict, None):
    async with aiohttp.ClientSession(
        timeout=aiohttp.ClientTimeout(total=3)
        ) as session:
        async with session.get(
            f'{config["kekkai_instance"]}/api/getChart/{period}/',
            params={
                'from_currency': from_currency,
                'conv_currency': conv_currency
                }) as res:
            if not HTTPStatus(res.status).is_success:
                return None

            data = await res.json()

            return data.get('detail', None)