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179 lines
6.0 KiB
179 lines
6.0 KiB
# -*- encoding: utf8 -*- |
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'''Module exchange_rate: |
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This module is responsible for getting the conversion rates between different |
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currencies. |
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''' |
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from kivy.network.urlrequest import UrlRequest |
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#kivy.event import EventDispatcher |
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from kivy.clock import Clock |
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import decimal |
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import json |
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class Exchanger(object): |
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''' |
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''' |
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symbols = {'ALL': 'Lek', 'AED': 'د.إ', 'AFN':'؋', 'ARS': '$', 'AMD': '֏', |
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'AWG': 'ƒ', 'ANG': 'ƒ', 'AOA': 'Kz', 'BDT': '৳', 'BHD': 'BD', |
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'BIF': 'FBu', 'BTC': 'BTC', 'BTN': 'Nu', |
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'AUD': '$', 'AZN': 'ман', 'BSD': '$', 'BBD': '$', 'BYR': 'p', |
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'BZD': 'BZ$', 'BMD': '$', 'BOB': '$b', 'BAM': 'KM', 'BWP': 'P', |
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'BGN': 'лв', 'BRL': 'R$', 'BND': '$', 'KHR': '៛', 'CAD': '$', |
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'KYD': '$', 'USD': '$', 'CLP': '$', 'CNY': '¥', 'COP': '$', 'CRC': '₡', |
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'HRK': 'kn', 'CUP':'₱', 'CZK': 'Kč', 'DKK': 'kr', 'DOP': 'RD$', |
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'XCD': '$', 'EGP': '£', 'SVC': '$' , 'EEK': 'kr', 'EUR': '€', |
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'FKP': '£', 'FJD': '$', 'GHC': '¢', 'GIP': '£', 'GTQ': 'Q', 'GBP': '£', |
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'GYD': '$', 'HNL': 'L', 'HKD': '$', 'HUF': 'Ft', 'ISK': 'kr', |
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'INR': '₹', 'IDR': 'Rp', 'IRR': '﷼', 'IMP': '£', 'ILS': '₪', |
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'JMD': 'J$', 'JPY': '¥', 'JEP': '£', 'KZT': 'лв', 'KPW': '₩', |
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'KRW': '₩', 'KGS': 'лв', 'LAK': '₭', 'LVL': 'Ls'} |
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def __init__(self, parent): |
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self.parent = parent |
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self.quote_currencies = None |
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self.exchanges = ('BlockChain', 'Coinbase', 'CoinDesk') |
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try: |
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self.use_exchange = parent.electrum_config.get('use_exchange', |
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'BlockChain') |
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except AttributeError: |
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self.use_exchange = 'BlockChain' |
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self.currencies = self.symbols.keys() |
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def exchange(self, btc_amount, quote_currency): |
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if self.quote_currencies is None: |
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return None |
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quote_currencies = self.quote_currencies.copy() |
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if quote_currency not in quote_currencies: |
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return None |
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if self.use_exchange == "CoinDesk": |
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try: |
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connection = httplib.HTTPSConnection('api.coindesk.com') |
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connection.request("GET", "/v1/bpi/currentprice/" + str(quote_currency) + ".json") |
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except Exception: |
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return |
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resp = connection.getresponse() |
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if resp.reason == httplib.responses[httplib.NOT_FOUND]: |
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return |
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try: |
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resp_rate = json.loads(resp.read()) |
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except Exception: |
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return |
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return btc_amount * decimal.Decimal(str(resp_rate["bpi"][str(quote_currency)]["rate_float"])) |
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return btc_amount * decimal.Decimal(quote_currencies[quote_currency]) |
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def check_rates(self, dt): |
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if self.use_exchange == 'BlockChain': |
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self.check_blockchain() |
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elif self.use_exchange == 'CoinDesk': |
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self.check_coindesk() |
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elif self.use_exchange == 'Coinbase': |
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self.check_coinbase() |
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def check_coindesk(self): |
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def _lookup_rate(response, quote_id): |
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return decimal.Decimal(str(response[str(quote_id)]["15m"])) |
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def on_success(request, response): |
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quote_currencies = {} |
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try: |
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for r in response: |
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quote_currencies[r] = _lookup_rate(response, r) |
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self.quote_currencies = quote_currencies |
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except KeyError: |
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pass |
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self.parent.set_currencies(quote_currencies) |
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def on_failure(*args): |
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pass |
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def on_error(*args): |
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pass |
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def on_redirect(*args): |
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pass |
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req = UrlRequest( |
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url='https://api.coindesk.com/v1/bpi/supported-currencies.json', |
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on_success=on_success, |
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on_failure=on_failure, |
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on_error=on_error, |
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on_redirect=on_redirect, |
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timeout=5) |
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def check_coinbase(self): |
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def _lookup_rate(response, quote_id): |
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return decimal.Decimal(str(response[str(quote_id)])) |
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def on_success(request, response): |
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quote_currencies = {} |
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try: |
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for r in response: |
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if r[:7] == "btc_to_": |
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quote_currencies[r[7:].upper()] =\ |
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_lookup_rate(response, r) |
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self.quote_currencies = quote_currencies |
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except KeyError: |
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pass |
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self.parent.set_currencies(quote_currencies) |
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def on_failure(*args): |
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pass |
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def on_error(*args): |
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pass |
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def on_redirect(*args): |
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pass |
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req = UrlRequest( |
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url='https://coinbase.com/api/v1/currencies/exchange_rates', |
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on_success=on_success, |
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on_failure=on_failure, |
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on_error=on_error, |
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on_redirect=on_redirect, |
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timeout=5) |
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def check_blockchain(self): |
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def _lookup_rate(response, quote_id): |
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return decimal.Decimal(str(response[str(quote_id)]["15m"])) |
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def on_success(request, response): |
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quote_currencies = {} |
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try: |
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for r in response: |
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quote_currencies[r] = _lookup_rate(response, r) |
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self.quote_currencies = quote_currencies |
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except KeyError: |
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pass |
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self.parent.set_currencies(quote_currencies) |
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def on_failure(*args): |
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pass |
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def on_error(*args): |
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pass |
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def on_redirect(*args): |
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pass |
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req = UrlRequest(url='https://blockchain.info/ticker', |
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on_success=on_success, |
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on_failure=on_failure, |
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on_error=on_error, |
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on_redirect=on_redirect, |
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timeout=5) |
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def start(self): |
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# check every 5 seconds |
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self.check_rates(0) |
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Clock.schedule_interval(self.check_rates, 5) |
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def stop(self): |
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Clock.unschedule(self.check_rates) |
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