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630 lines
22 KiB
630 lines
22 KiB
import asyncio
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from datetime import datetime
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import inspect
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import sys
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import os
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import json
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import time
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import csv
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import decimal
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from decimal import Decimal
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from typing import Sequence, Optional
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from aiorpcx.curio import timeout_after, TaskTimeout, TaskGroup
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from .bitcoin import COIN
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from .i18n import _
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from .util import (ThreadJob, make_dir, log_exceptions,
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make_aiohttp_session, resource_path)
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from .network import Network
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from .simple_config import SimpleConfig
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from .logging import Logger
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DEFAULT_ENABLED = False
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DEFAULT_CURRENCY = "EUR"
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DEFAULT_EXCHANGE = "CoinGecko" # default exchange should ideally provide historical rates
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# See https://en.wikipedia.org/wiki/ISO_4217
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CCY_PRECISIONS = {'BHD': 3, 'BIF': 0, 'BYR': 0, 'CLF': 4, 'CLP': 0,
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'CVE': 0, 'DJF': 0, 'GNF': 0, 'IQD': 3, 'ISK': 0,
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'JOD': 3, 'JPY': 0, 'KMF': 0, 'KRW': 0, 'KWD': 3,
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'LYD': 3, 'MGA': 1, 'MRO': 1, 'OMR': 3, 'PYG': 0,
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'RWF': 0, 'TND': 3, 'UGX': 0, 'UYI': 0, 'VND': 0,
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'VUV': 0, 'XAF': 0, 'XAU': 4, 'XOF': 0, 'XPF': 0}
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class ExchangeBase(Logger):
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def __init__(self, on_quotes, on_history):
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Logger.__init__(self)
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self.history = {}
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self.quotes = {}
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self.on_quotes = on_quotes
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self.on_history = on_history
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async def get_raw(self, site, get_string):
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# APIs must have https
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url = ''.join(['https://', site, get_string])
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network = Network.get_instance()
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proxy = network.proxy if network else None
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async with make_aiohttp_session(proxy) as session:
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async with session.get(url) as response:
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response.raise_for_status()
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return await response.text()
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async def get_json(self, site, get_string):
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# APIs must have https
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url = ''.join(['https://', site, get_string])
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network = Network.get_instance()
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proxy = network.proxy if network else None
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async with make_aiohttp_session(proxy) as session:
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async with session.get(url) as response:
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response.raise_for_status()
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# set content_type to None to disable checking MIME type
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return await response.json(content_type=None)
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async def get_csv(self, site, get_string):
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raw = await self.get_raw(site, get_string)
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reader = csv.DictReader(raw.split('\n'))
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return list(reader)
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def name(self):
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return self.__class__.__name__
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async def update_safe(self, ccy):
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try:
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self.logger.info(f"getting fx quotes for {ccy}")
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self.quotes = await self.get_rates(ccy)
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self.logger.info("received fx quotes")
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except BaseException as e:
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self.logger.info(f"failed fx quotes: {repr(e)}")
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self.quotes = {}
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self.on_quotes()
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def read_historical_rates(self, ccy, cache_dir) -> Optional[dict]:
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filename = os.path.join(cache_dir, self.name() + '_'+ ccy)
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if not os.path.exists(filename):
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return None
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timestamp = os.stat(filename).st_mtime
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try:
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with open(filename, 'r', encoding='utf-8') as f:
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h = json.loads(f.read())
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except:
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return None
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if not h: # e.g. empty dict
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return None
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h['timestamp'] = timestamp
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self.history[ccy] = h
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self.on_history()
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return h
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@log_exceptions
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async def get_historical_rates_safe(self, ccy, cache_dir):
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try:
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self.logger.info(f"requesting fx history for {ccy}")
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h = await self.request_history(ccy)
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self.logger.info(f"received fx history for {ccy}")
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except BaseException as e:
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self.logger.info(f"failed fx history: {repr(e)}")
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return
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filename = os.path.join(cache_dir, self.name() + '_' + ccy)
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with open(filename, 'w', encoding='utf-8') as f:
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f.write(json.dumps(h))
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h['timestamp'] = time.time()
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self.history[ccy] = h
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self.on_history()
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def get_historical_rates(self, ccy, cache_dir):
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if ccy not in self.history_ccys():
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return
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h = self.history.get(ccy)
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if h is None:
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h = self.read_historical_rates(ccy, cache_dir)
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if h is None or h['timestamp'] < time.time() - 24*3600:
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asyncio.get_event_loop().create_task(self.get_historical_rates_safe(ccy, cache_dir))
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def history_ccys(self):
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return []
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def historical_rate(self, ccy, d_t):
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return self.history.get(ccy, {}).get(d_t.strftime('%Y-%m-%d'), 'NaN')
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async def request_history(self, ccy):
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raise NotImplementedError() # implemented by subclasses
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async def get_rates(self, ccy):
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raise NotImplementedError() # implemented by subclasses
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async def get_currencies(self):
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rates = await self.get_rates('')
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return sorted([str(a) for (a, b) in rates.items() if b is not None and len(a)==3])
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class BitcoinAverage(ExchangeBase):
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# note: historical rates used to be freely available
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# but this is no longer the case. see #5188
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async def get_rates(self, ccy):
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json = await self.get_json('apiv2.bitcoinaverage.com', '/indices/global/ticker/short')
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return dict([(r.replace("BTC", ""), Decimal(json[r]['last']))
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for r in json if r != 'timestamp'])
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class Bitcointoyou(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('bitcointoyou.com', "/API/ticker.aspx")
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return {'BRL': Decimal(json['ticker']['last'])}
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class BitcoinVenezuela(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.bitcoinvenezuela.com', '/')
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rates = [(r, json['BTC'][r]) for r in json['BTC']
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if json['BTC'][r] is not None] # Giving NULL for LTC
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return dict(rates)
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def history_ccys(self):
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return ['ARS', 'EUR', 'USD', 'VEF']
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async def request_history(self, ccy):
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json = await self.get_json('api.bitcoinvenezuela.com',
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"/historical/index.php?coin=BTC")
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return json[ccy +'_BTC']
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class Bitbank(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('public.bitbank.cc', '/btc_jpy/ticker')
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return {'JPY': Decimal(json['data']['last'])}
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class BitFlyer(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('bitflyer.jp', '/api/echo/price')
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return {'JPY': Decimal(json['mid'])}
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class BitPay(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('bitpay.com', '/api/rates')
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return dict([(r['code'], Decimal(r['rate'])) for r in json])
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class Bitso(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.bitso.com', '/v2/ticker')
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return {'MXN': Decimal(json['last'])}
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class BitStamp(ExchangeBase):
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async def get_currencies(self):
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return ['USD', 'EUR']
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async def get_rates(self, ccy):
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if ccy in CURRENCIES[self.name()]:
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json = await self.get_json('www.bitstamp.net', f'/api/v2/ticker/btc{ccy.lower()}/')
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return {ccy: Decimal(json['last'])}
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return {}
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class Bitvalor(ExchangeBase):
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async def get_rates(self,ccy):
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json = await self.get_json('api.bitvalor.com', '/v1/ticker.json')
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return {'BRL': Decimal(json['ticker_1h']['total']['last'])}
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class BlockchainInfo(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('blockchain.info', '/ticker')
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return dict([(r, Decimal(json[r]['15m'])) for r in json])
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class Bylls(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('bylls.com', '/api/price?from_currency=BTC&to_currency=CAD')
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return {'CAD': Decimal(json['public_price']['to_price'])}
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class Coinbase(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.coinbase.com',
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'/v2/exchange-rates?currency=BTC')
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return {ccy: Decimal(rate) for (ccy, rate) in json["data"]["rates"].items()}
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class CoinCap(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.coincap.io', '/v2/rates/bitcoin/')
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return {'USD': Decimal(json['data']['rateUsd'])}
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def history_ccys(self):
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return ['USD']
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async def request_history(self, ccy):
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# Currently 2000 days is the maximum in 1 API call
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# (and history starts on 2017-03-23)
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history = await self.get_json('api.coincap.io',
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'/v2/assets/bitcoin/history?interval=d1&limit=2000')
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return dict([(datetime.utcfromtimestamp(h['time']/1000).strftime('%Y-%m-%d'), h['priceUsd'])
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for h in history['data']])
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class CoinDesk(ExchangeBase):
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async def get_currencies(self):
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dicts = await self.get_json('api.coindesk.com',
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'/v1/bpi/supported-currencies.json')
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return [d['currency'] for d in dicts]
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async def get_rates(self, ccy):
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json = await self.get_json('api.coindesk.com',
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'/v1/bpi/currentprice/%s.json' % ccy)
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result = {ccy: Decimal(json['bpi'][ccy]['rate_float'])}
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return result
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def history_starts(self):
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return { 'USD': '2012-11-30', 'EUR': '2013-09-01' }
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def history_ccys(self):
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return self.history_starts().keys()
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async def request_history(self, ccy):
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start = self.history_starts()[ccy]
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end = datetime.today().strftime('%Y-%m-%d')
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# Note ?currency and ?index don't work as documented. Sigh.
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query = ('/v1/bpi/historical/close.json?start=%s&end=%s'
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% (start, end))
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json = await self.get_json('api.coindesk.com', query)
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return json['bpi']
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class CoinGecko(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.coingecko.com', '/api/v3/exchange_rates')
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return dict([(ccy.upper(), Decimal(d['value']))
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for ccy, d in json['rates'].items()])
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def history_ccys(self):
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# CoinGecko seems to have historical data for all ccys it supports
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return CURRENCIES[self.name()]
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async def request_history(self, ccy):
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history = await self.get_json('api.coingecko.com',
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'/api/v3/coins/bitcoin/market_chart?vs_currency=%s&days=max' % ccy)
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return dict([(datetime.utcfromtimestamp(h[0]/1000).strftime('%Y-%m-%d'), h[1])
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for h in history['prices']])
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class itBit(ExchangeBase):
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async def get_rates(self, ccy):
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ccys = ['USD', 'EUR', 'SGD']
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json = await self.get_json('api.itbit.com', '/v1/markets/XBT%s/ticker' % ccy)
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result = dict.fromkeys(ccys)
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if ccy in ccys:
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result[ccy] = Decimal(json['lastPrice'])
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return result
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class Kraken(ExchangeBase):
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async def get_rates(self, ccy):
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ccys = ['EUR', 'USD', 'CAD', 'GBP', 'JPY']
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pairs = ['XBT%s' % c for c in ccys]
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json = await self.get_json('api.kraken.com',
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'/0/public/Ticker?pair=%s' % ','.join(pairs))
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return dict((k[-3:], Decimal(float(v['c'][0])))
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for k, v in json['result'].items())
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class LocalBitcoins(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('localbitcoins.com',
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'/bitcoinaverage/ticker-all-currencies/')
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return dict([(r, Decimal(json[r]['rates']['last'])) for r in json])
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class MercadoBitcoin(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.bitvalor.com', '/v1/ticker.json')
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return {'BRL': Decimal(json['ticker_1h']['exchanges']['MBT']['last'])}
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class NegocieCoins(ExchangeBase):
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async def get_rates(self,ccy):
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json = await self.get_json('api.bitvalor.com', '/v1/ticker.json')
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return {'BRL': Decimal(json['ticker_1h']['exchanges']['NEG']['last'])}
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class TheRockTrading(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.therocktrading.com',
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'/v1/funds/BTCEUR/ticker')
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return {'EUR': Decimal(json['last'])}
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class Winkdex(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('winkdex.com', '/api/v0/price')
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return {'USD': Decimal(json['price'] / 100.0)}
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def history_ccys(self):
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return ['USD']
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async def request_history(self, ccy):
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json = await self.get_json('winkdex.com',
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"/api/v0/series?start_time=1342915200")
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history = json['series'][0]['results']
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return dict([(h['timestamp'][:10], h['price'] / 100.0)
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for h in history])
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class Zaif(ExchangeBase):
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async def get_rates(self, ccy):
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json = await self.get_json('api.zaif.jp', '/api/1/last_price/btc_jpy')
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return {'JPY': Decimal(json['last_price'])}
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def dictinvert(d):
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inv = {}
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for k, vlist in d.items():
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for v in vlist:
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keys = inv.setdefault(v, [])
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keys.append(k)
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return inv
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def get_exchanges_and_currencies():
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# load currencies.json from disk
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path = resource_path('currencies.json')
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try:
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with open(path, 'r', encoding='utf-8') as f:
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return json.loads(f.read())
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except:
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pass
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# or if not present, generate it now.
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print("cannot find currencies.json. will regenerate it now.")
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d = {}
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is_exchange = lambda obj: (inspect.isclass(obj)
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and issubclass(obj, ExchangeBase)
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and obj != ExchangeBase)
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exchanges = dict(inspect.getmembers(sys.modules[__name__], is_exchange))
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async def get_currencies_safe(name, exchange):
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try:
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d[name] = await exchange.get_currencies()
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print(name, "ok")
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except:
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print(name, "error")
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async def query_all_exchanges_for_their_ccys_over_network():
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async with timeout_after(10):
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async with TaskGroup() as group:
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for name, klass in exchanges.items():
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exchange = klass(None, None)
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await group.spawn(get_currencies_safe(name, exchange))
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loop = asyncio.get_event_loop()
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try:
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loop.run_until_complete(query_all_exchanges_for_their_ccys_over_network())
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except Exception as e:
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pass
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with open(path, 'w', encoding='utf-8') as f:
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f.write(json.dumps(d, indent=4, sort_keys=True))
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return d
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CURRENCIES = get_exchanges_and_currencies()
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def get_exchanges_by_ccy(history=True):
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if not history:
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return dictinvert(CURRENCIES)
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d = {}
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exchanges = CURRENCIES.keys()
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for name in exchanges:
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klass = globals()[name]
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exchange = klass(None, None)
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d[name] = exchange.history_ccys()
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return dictinvert(d)
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class FxThread(ThreadJob):
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def __init__(self, config: SimpleConfig, network: Network):
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ThreadJob.__init__(self)
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self.config = config
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self.network = network
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if self.network:
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self.network.register_callback(self.set_proxy, ['proxy_set'])
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self.ccy = self.get_currency()
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self.history_used_spot = False
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self.ccy_combo = None
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self.hist_checkbox = None
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self.cache_dir = os.path.join(config.path, 'cache')
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self._trigger = asyncio.Event()
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self._trigger.set()
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self.set_exchange(self.config_exchange())
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make_dir(self.cache_dir)
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def set_proxy(self, trigger_name, *args):
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self._trigger.set()
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@staticmethod
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def get_currencies(history: bool) -> Sequence[str]:
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d = get_exchanges_by_ccy(history)
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return sorted(d.keys())
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@staticmethod
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def get_exchanges_by_ccy(ccy: str, history: bool) -> Sequence[str]:
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d = get_exchanges_by_ccy(history)
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return d.get(ccy, [])
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@staticmethod
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def remove_thousands_separator(text):
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return text.replace(',', '') # FIXME use THOUSAND_SEPARATOR in util
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def ccy_amount_str(self, amount, commas):
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prec = CCY_PRECISIONS.get(self.ccy, 2)
|
|
fmt_str = "{:%s.%df}" % ("," if commas else "", max(0, prec)) # FIXME use util.THOUSAND_SEPARATOR and util.DECIMAL_POINT
|
|
try:
|
|
rounded_amount = round(amount, prec)
|
|
except decimal.InvalidOperation:
|
|
rounded_amount = amount
|
|
return fmt_str.format(rounded_amount)
|
|
|
|
async def run(self):
|
|
while True:
|
|
# approx. every 2.5 minutes, refresh spot price
|
|
try:
|
|
async with timeout_after(150):
|
|
await self._trigger.wait()
|
|
self._trigger.clear()
|
|
# we were manually triggered, so get historical rates
|
|
if self.is_enabled() and self.show_history():
|
|
self.exchange.get_historical_rates(self.ccy, self.cache_dir)
|
|
except TaskTimeout:
|
|
pass
|
|
if self.is_enabled():
|
|
await self.exchange.update_safe(self.ccy)
|
|
|
|
def is_enabled(self):
|
|
return bool(self.config.get('use_exchange_rate', DEFAULT_ENABLED))
|
|
|
|
def set_enabled(self, b):
|
|
self.config.set_key('use_exchange_rate', bool(b))
|
|
self.trigger_update()
|
|
|
|
def get_history_config(self, *, default=False):
|
|
return bool(self.config.get('history_rates', default))
|
|
|
|
def set_history_config(self, b):
|
|
self.config.set_key('history_rates', bool(b))
|
|
|
|
def get_history_capital_gains_config(self):
|
|
return bool(self.config.get('history_rates_capital_gains', False))
|
|
|
|
def set_history_capital_gains_config(self, b):
|
|
self.config.set_key('history_rates_capital_gains', bool(b))
|
|
|
|
def get_fiat_address_config(self):
|
|
return bool(self.config.get('fiat_address'))
|
|
|
|
def set_fiat_address_config(self, b):
|
|
self.config.set_key('fiat_address', bool(b))
|
|
|
|
def get_currency(self):
|
|
'''Use when dynamic fetching is needed'''
|
|
return self.config.get("currency", DEFAULT_CURRENCY)
|
|
|
|
def config_exchange(self):
|
|
return self.config.get('use_exchange', DEFAULT_EXCHANGE)
|
|
|
|
def show_history(self):
|
|
return self.is_enabled() and self.get_history_config() and self.ccy in self.exchange.history_ccys()
|
|
|
|
def set_currency(self, ccy):
|
|
self.ccy = ccy
|
|
self.config.set_key('currency', ccy, True)
|
|
self.trigger_update()
|
|
self.on_quotes()
|
|
|
|
def trigger_update(self):
|
|
if self.network:
|
|
self.network.asyncio_loop.call_soon_threadsafe(self._trigger.set)
|
|
|
|
def set_exchange(self, name):
|
|
class_ = globals().get(name) or globals().get(DEFAULT_EXCHANGE)
|
|
self.logger.info(f"using exchange {name}")
|
|
if self.config_exchange() != name:
|
|
self.config.set_key('use_exchange', name, True)
|
|
assert issubclass(class_, ExchangeBase), f"unexpected type {class_} for {name}"
|
|
self.exchange = class_(self.on_quotes, self.on_history) # type: ExchangeBase
|
|
# A new exchange means new fx quotes, initially empty. Force
|
|
# a quote refresh
|
|
self.trigger_update()
|
|
self.exchange.read_historical_rates(self.ccy, self.cache_dir)
|
|
|
|
def on_quotes(self):
|
|
if self.network:
|
|
self.network.trigger_callback('on_quotes')
|
|
|
|
def on_history(self):
|
|
if self.network:
|
|
self.network.trigger_callback('on_history')
|
|
|
|
def exchange_rate(self) -> Decimal:
|
|
"""Returns the exchange rate as a Decimal"""
|
|
rate = self.exchange.quotes.get(self.ccy)
|
|
if rate is None:
|
|
return Decimal('NaN')
|
|
return Decimal(rate)
|
|
|
|
def format_amount(self, btc_balance):
|
|
rate = self.exchange_rate()
|
|
return '' if rate.is_nan() else "%s" % self.value_str(btc_balance, rate)
|
|
|
|
def format_amount_and_units(self, btc_balance):
|
|
rate = self.exchange_rate()
|
|
return '' if rate.is_nan() else "%s %s" % (self.value_str(btc_balance, rate), self.ccy)
|
|
|
|
def get_fiat_status_text(self, btc_balance, base_unit, decimal_point):
|
|
rate = self.exchange_rate()
|
|
return _(" (No FX rate available)") if rate.is_nan() else " 1 %s~%s %s" % (base_unit,
|
|
self.value_str(COIN / (10**(8 - decimal_point)), rate), self.ccy)
|
|
|
|
def fiat_value(self, satoshis, rate):
|
|
return Decimal('NaN') if satoshis is None else Decimal(satoshis) / COIN * Decimal(rate)
|
|
|
|
def value_str(self, satoshis, rate):
|
|
return self.format_fiat(self.fiat_value(satoshis, rate))
|
|
|
|
def format_fiat(self, value):
|
|
if value.is_nan():
|
|
return _("No data")
|
|
return "%s" % (self.ccy_amount_str(value, True))
|
|
|
|
def history_rate(self, d_t):
|
|
if d_t is None:
|
|
return Decimal('NaN')
|
|
rate = self.exchange.historical_rate(self.ccy, d_t)
|
|
# Frequently there is no rate for today, until tomorrow :)
|
|
# Use spot quotes in that case
|
|
if rate in ('NaN', None) and (datetime.today().date() - d_t.date()).days <= 2:
|
|
rate = self.exchange.quotes.get(self.ccy, 'NaN')
|
|
self.history_used_spot = True
|
|
if rate is None:
|
|
rate = 'NaN'
|
|
return Decimal(rate)
|
|
|
|
def historical_value_str(self, satoshis, d_t):
|
|
return self.format_fiat(self.historical_value(satoshis, d_t))
|
|
|
|
def historical_value(self, satoshis, d_t):
|
|
return self.fiat_value(satoshis, self.history_rate(d_t))
|
|
|
|
def timestamp_rate(self, timestamp):
|
|
from .util import timestamp_to_datetime
|
|
date = timestamp_to_datetime(timestamp)
|
|
return self.history_rate(date)
|
|
|
|
|
|
assert globals().get(DEFAULT_EXCHANGE), f"default exchange {DEFAULT_EXCHANGE} does not exist"
|
|
|