mirror of
https://github.com/Redume/Shirino.git
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93 lines
2.9 KiB
Python
93 lines
2.9 KiB
Python
import json
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import re
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from datetime import datetime, timedelta
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from decimal import Decimal
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from http import HTTPStatus
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import aiohttp
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import yaml
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from utils.format_number import format_number
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config = yaml.safe_load(open("../config.yaml", "r", encoding="utf-8"))
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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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async def convert(self) -> None:
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if not await self.kekkai():
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await self.ddg()
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self.conv_amount = format_number(Decimal(self.conv_amount))
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async def get_lastdate(self) -> str:
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async with aiohttp.ClientSession(
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timeout=aiohttp.ClientTimeout(total=3)
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) as session:
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async with session.get(f"{config['kekkai_instance']}/api/metadata") as res:
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if not HTTPStatus(res.status).is_success:
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return (datetime.now() - timedelta(1)).strftime("%Y-%m-%d")
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data = await res.json()
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return data.get(
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"last_date", (datetime.now() - timedelta(1)).strftime("%Y-%m-%d")
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)
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async def kekkai(self) -> bool:
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date = await self.get_lastdate()
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async with aiohttp.ClientSession(
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timeout=aiohttp.ClientTimeout(total=3)
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) as session:
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async with session.get(
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f"{config['kekkai_instance']}/api/getRate/",
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params={
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"from_currency": self.from_currency,
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"conv_currency": self.conv_currency,
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"date": date,
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"conv_amount": self.amount,
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},
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) as res:
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if not HTTPStatus(res.status).is_success:
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return False
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data = await res.json()
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self.conv_amount = data.get("conv_amount", 0.0)
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return True
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async def ddg(self) -> None:
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async with aiohttp.ClientSession(
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timeout=aiohttp.ClientTimeout(total=3)
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) as session:
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async with session.get(
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"https://duckduckgo.com/js/spice/currency/"
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f"{self.amount}/{self.from_currency}/{self.conv_currency}"
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) as res:
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data_text = await res.text()
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data = json.loads(re.findall(r"\(\s*(.*)\s*\);$", data_text)[0])
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for key in ["terms", "privacy", "timestamp"]:
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data.pop(key, None)
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if not data.get("to"):
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raise RuntimeError(
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"Failed to get the exchange rate from DuckDuckGo"
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)
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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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