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85 lines
2.3 KiB
Python
85 lines
2.3 KiB
Python
import yaml
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import requests
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import json
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import re
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from decimal import Decimal, ROUND_DOWN
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from function.format_number import format_number
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config = yaml.safe_load(open('config.yaml'))
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coinapi_len = len(config['coinapi_keys'])
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coinapi_active = [0]
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class Converter:
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def __init__(self):
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self.amount: float = 1.0
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self.conv_amount: float = 0.0
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self.from_currency: str = ''
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self.conv_currency: str = ''
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def convert(self) -> None:
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if not self.ddg():
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self.coinapi()
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number = Decimal(str(self.conv_amount))
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self.conv_amount = format_number(number.quantize(Decimal('1.00'), rounding=ROUND_DOWN))
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def ddg(self) -> bool:
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res = requests.get('https://duckduckgo.com/js/spice/currency'
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f'/{self.amount}'
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f'/{self.from_currency}'
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f'/{self.conv_currency}')
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data = json.loads(re.findall(r'\(\s*(.*)\s*\);$', res.text)[0])
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del data['terms']
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del data['privacy']
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del data['timestamp']
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if len(data.get('to')) == 0:
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return False
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conv = data.get('to')[0]
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conv_amount = conv.get('mid')
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if conv_amount is None:
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raise RuntimeError('Error when converting currency via DuckDuckGo')
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self.conv_amount = float(conv_amount)
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return True
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def coinapi(self, depth: int = config['coinapi_keys']) -> None:
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if depth <= 0:
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raise RecursionError('Rate limit on all tokens')
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resp = requests.get(
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(
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'https://rest.coinapi.io/v1/exchangerate'
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f'/{self.from_currency}'
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f'/{self.conv_currency}'
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),
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headers={
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'X-CoinAPI-Key': config['coinapi_keys'][coinapi_active[0]],
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},
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timeout=config['timeout'],
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)
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if resp.status_code == 429:
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rotate_token(config['coinapi_keys'], coinapi_active)
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self.coinapi(depth - 1)
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data = resp.json()
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rate = data.get('rate')
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if rate is None:
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raise RuntimeError('Failed to get the exchange rate from CoinAPI')
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self.conv_amount = float(rate * self.amount)
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def rotate_token(lst, active) -> None:
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active[0] = (active[0] + 1) % len(lst)
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