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572 lines
18 KiB
572 lines
18 KiB
from datetime import datetime
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import inspect
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import requests
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import sys
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import os
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import json
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from threading import Thread
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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 .bitcoin import COIN
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from .i18n import _
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from .util import PrintError, ThreadJob
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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(PrintError):
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def __init__(self, on_quotes, on_history):
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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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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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response = requests.request('GET', url, headers={'User-Agent' : 'Electrum'}, timeout=10)
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return response.json()
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def get_csv(self, site, get_string):
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url = ''.join(['https://', site, get_string])
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response = requests.request('GET', url, headers={'User-Agent' : 'Electrum'})
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reader = csv.DictReader(response.content.decode().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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def update_safe(self, ccy):
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try:
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self.print_error("getting fx quotes for", ccy)
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self.quotes = self.get_rates(ccy)
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self.print_error("received fx quotes")
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except BaseException as e:
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self.print_error("failed fx quotes:", e)
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self.on_quotes()
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def update(self, ccy):
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t = Thread(target=self.update_safe, args=(ccy,))
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t.setDaemon(True)
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t.start()
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def read_historical_rates(self, ccy, cache_dir):
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filename = os.path.join(cache_dir, self.name() + '_'+ ccy)
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if os.path.exists(filename):
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timestamp = os.stat(filename).st_mtime
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try:
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with open(filename, 'r') as f:
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h = json.loads(f.read())
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h['timestamp'] = timestamp
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except:
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h = None
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else:
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h = None
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if h:
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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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def get_historical_rates_safe(self, ccy, cache_dir):
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try:
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self.print_error("requesting fx history for", ccy)
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h = self.request_history(ccy)
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self.print_error("received fx history for", ccy)
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except BaseException as e:
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self.print_error("failed fx history:", 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') 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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t = Thread(target=self.get_historical_rates_safe, args=(ccy, cache_dir))
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t.setDaemon(True)
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t.start()
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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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def get_currencies(self):
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rates = 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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def get_rates(self, ccy):
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json = 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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def history_ccys(self):
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return ['AUD', 'BRL', 'CAD', 'CHF', 'CNY', 'EUR', 'GBP', 'IDR', 'ILS',
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'MXN', 'NOK', 'NZD', 'PLN', 'RON', 'RUB', 'SEK', 'SGD', 'USD',
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'ZAR']
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def request_history(self, ccy):
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history = self.get_csv('apiv2.bitcoinaverage.com',
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"/indices/global/history/BTC%s?period=alltime&format=csv" % ccy)
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return dict([(h['DateTime'][:10], h['Average'])
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for h in history])
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class Bitcointoyou(ExchangeBase):
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def get_rates(self, ccy):
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json = self.get_json('bitcointoyou.com', "/API/ticker.aspx")
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return {'BRL': Decimal(json['ticker']['last'])}
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def history_ccys(self):
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return ['BRL']
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class BitcoinVenezuela(ExchangeBase):
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def get_rates(self, ccy):
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json = 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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def request_history(self, ccy):
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return self.get_json('api.bitcoinvenezuela.com',
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"/historical/index.php?coin=BTC")[ccy +'_BTC']
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class Bitbank(ExchangeBase):
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def get_rates(self, ccy):
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json = 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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def get_rates(self, ccy):
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json = self.get_json('bitflyer.jp', '/api/echo/price')
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return {'JPY': Decimal(json['mid'])}
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class Bitmarket(ExchangeBase):
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def get_rates(self, ccy):
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json = self.get_json('www.bitmarket.pl', '/json/BTCPLN/ticker.json')
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return {'PLN': Decimal(json['last'])}
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class BitPay(ExchangeBase):
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def get_rates(self, ccy):
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json = 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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def get_rates(self, ccy):
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json = 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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def get_rates(self, ccy):
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json = self.get_json('www.bitstamp.net', '/api/ticker/')
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return {'USD': Decimal(json['last'])}
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class Bitvalor(ExchangeBase):
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def get_rates(self,ccy):
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json = 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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def get_rates(self, ccy):
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json = 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 BTCChina(ExchangeBase):
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def get_rates(self, ccy):
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json = self.get_json('data.btcchina.com', '/data/ticker')
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return {'CNY': Decimal(json['ticker']['last'])}
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class BTCParalelo(ExchangeBase):
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def get_rates(self, ccy):
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json = self.get_json('btcparalelo.com', '/api/price')
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return {'VEF': Decimal(json['price'])}
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class Coinbase(ExchangeBase):
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def get_rates(self, ccy):
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json = self.get_json('coinbase.com',
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'/api/v1/currencies/exchange_rates')
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return dict([(r[7:].upper(), Decimal(json[r]))
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for r in json if r.startswith('btc_to_')])
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class CoinDesk(ExchangeBase):
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def get_currencies(self):
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dicts = 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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def get_rates(self, ccy):
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json = 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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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 = self.get_json('api.coindesk.com', query)
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return json['bpi']
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class Coinsecure(ExchangeBase):
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def get_rates(self, ccy):
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json = self.get_json('api.coinsecure.in', '/v0/noauth/newticker')
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return {'INR': Decimal(json['lastprice'] / 100.0 )}
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class Foxbit(ExchangeBase):
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def get_rates(self,ccy):
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json = self.get_json('api.bitvalor.com', '/v1/ticker.json')
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return {'BRL': Decimal(json['ticker_1h']['exchanges']['FOX']['last'])}
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class itBit(ExchangeBase):
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def get_rates(self, ccy):
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ccys = ['USD', 'EUR', 'SGD']
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json = 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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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 = 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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def get_rates(self, ccy):
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json = 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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def get_rates(self, ccy):
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json = 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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def get_rates(self,ccy):
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json = 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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def history_ccys(self):
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return ['BRL']
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class Unocoin(ExchangeBase):
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def get_rates(self, ccy):
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json = self.get_json('www.unocoin.com', 'trade?buy')
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return {'INR': Decimal(json)}
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class WEX(ExchangeBase):
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def get_rates(self, ccy):
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json_eur = self.get_json('wex.nz', '/api/3/ticker/btc_eur')
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json_rub = self.get_json('wex.nz', '/api/3/ticker/btc_rur')
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json_usd = self.get_json('wex.nz', '/api/3/ticker/btc_usd')
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return {'EUR': Decimal(json_eur['btc_eur']['last']),
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'RUB': Decimal(json_rub['btc_rur']['last']),
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'USD': Decimal(json_usd['btc_usd']['last'])}
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class Winkdex(ExchangeBase):
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def get_rates(self, ccy):
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json = 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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def request_history(self, ccy):
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json = 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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def get_rates(self, ccy):
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json = 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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import os, json
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path = os.path.join(os.path.dirname(__file__), 'currencies.json')
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try:
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with open(path, 'r') 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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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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for name, klass in exchanges.items():
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exchange = klass(None, None)
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try:
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d[name] = 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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continue
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with open(path, 'w') 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, network):
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self.config = config
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self.network = network
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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.set_exchange(self.config_exchange())
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if not os.path.exists(self.cache_dir):
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os.mkdir(self.cache_dir)
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def get_currencies(self, h):
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d = get_exchanges_by_ccy(h)
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return sorted(d.keys())
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def get_exchanges_by_ccy(self, ccy, h):
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d = get_exchanges_by_ccy(h)
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return d.get(ccy, [])
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def ccy_amount_str(self, amount, commas):
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prec = CCY_PRECISIONS.get(self.ccy, 2)
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fmt_str = "{:%s.%df}" % ("," if commas else "", max(0, prec))
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try:
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rounded_amount = round(amount, prec)
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except decimal.InvalidOperation:
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rounded_amount = amount
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return fmt_str.format(rounded_amount)
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def run(self):
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# This runs from the plugins thread which catches exceptions
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if self.is_enabled():
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if self.timeout ==0 and self.show_history():
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self.exchange.get_historical_rates(self.ccy, self.cache_dir)
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if self.timeout <= time.time():
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self.timeout = time.time() + 150
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self.exchange.update(self.ccy)
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def is_enabled(self):
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return bool(self.config.get('use_exchange_rate'))
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def set_enabled(self, b):
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return self.config.set_key('use_exchange_rate', bool(b))
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def get_history_config(self):
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return bool(self.config.get('history_rates'))
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def set_history_config(self, b):
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self.config.set_key('history_rates', bool(b))
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def get_history_capital_gains_config(self):
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return bool(self.config.get('history_rates_capital_gains', False))
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def set_history_capital_gains_config(self, b):
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self.config.set_key('history_rates_capital_gains', bool(b))
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def get_fiat_address_config(self):
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return bool(self.config.get('fiat_address'))
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def set_fiat_address_config(self, b):
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self.config.set_key('fiat_address', bool(b))
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def get_currency(self):
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'''Use when dynamic fetching is needed'''
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return self.config.get("currency", "EUR")
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def config_exchange(self):
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return self.config.get('use_exchange', 'BitcoinAverage')
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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.timeout = 0 # Because self.ccy changes
|
|
self.on_quotes()
|
|
|
|
def set_exchange(self, name):
|
|
class_ = globals().get(name, BitcoinAverage)
|
|
self.print_error("using exchange", name)
|
|
if self.config_exchange() != name:
|
|
self.config.set_key('use_exchange', name, True)
|
|
self.exchange = class_(self.on_quotes, self.on_history)
|
|
# A new exchange means new fx quotes, initially empty. Force
|
|
# a quote refresh
|
|
self.timeout = 0
|
|
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):
|
|
'''Returns None, or 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 == 'NaN' and (datetime.today().date() - d_t.date()).days <= 2:
|
|
rate = self.exchange.quotes.get(self.ccy, 'NaN')
|
|
self.history_used_spot = True
|
|
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 electrum.util import timestamp_to_datetime
|
|
date = timestamp_to_datetime(timestamp)
|
|
return self.history_rate(date)
|
|
|