Shirino/functions/convert.py

70 lines
2.2 KiB
Python

import json
import re
from datetime import datetime
from decimal import Decimal
from http import HTTPStatus
import aiohttp
import yaml
from utils.format_number import format_number
config = yaml.safe_load(open('config.yaml'))
class Converter:
def __init__(self):
self.amount: float = 1.0
self.conv_amount: float = 0.0
self.from_currency: str = ''
self.conv_currency: str = ''
async def convert(self) -> None:
if not await self.kekkai():
await self.ddg()
self.conv_amount = format_number(Decimal(self.conv_amount))
async def kekkai(self) -> bool:
date = datetime.today().strftime('%Y-%m-%d')
async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=3)) as session:
async with session.get(f'{config['kekkai_instance']}/api/getRate/', params={
'from_currency': self.from_currency,
'conv_currency': self.conv_currency,
'date': date,
'conv_amount': self.amount
}) as res:
if not HTTPStatus(res.status).is_success:
return False
data = await res.json()
self.conv_amount = data.get('conv_amount', 0.0)
return True
async def ddg(self) -> None:
async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=3)) as session:
async with session.get(
'https://duckduckgo.com/js/spice/currency/'
f'{self.amount}/{self.from_currency}/{self.conv_currency}'
) as res:
data_text = await res.text()
data = json.loads(re.findall(r'\(\s*(.*)\s*\);$', data_text)[0])
for key in ['terms', 'privacy', 'timestamp']:
data.pop(key, None)
if not data.get('to'):
raise RuntimeError('Failed to get the exchange rate from DuckDuckGo')
conv = data.get('to')[0]
conv_amount = conv.get('mid')
if conv_amount is None:
raise RuntimeError('Error when converting currency via DuckDuckGo')
self.conv_amount = float(conv_amount)