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##
## coinfetch-api-bitstamp - Bitstamp API plugin for coinfetch
## Copyright (C) 2015-2016 Delwink, LLC
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU Affero General Public License as published by
## the Free Software Foundation, version 3 only.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU Affero General Public License for more details.
##
## You should have received a copy of the GNU Affero General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
##
from cfetch import register_ticker, NoSuchKindException, NoSuchPairException
from cfetch import Ticker
from requests import get
class BitstampTicker(Ticker):
def __init__(self, path):
super().__init__(path)
def get_pair_data(self, response):
return response.json()
def get_rate(self, a, b, amt=1, kind='vwap'):
r = get(self.path)
res = self.get_pair_data(r)
if kind not in res:
raise NoSuchKindException('Kind {} not available'.format(kind))
if a == 'btc' and b == 'usd':
return float(res[kind]) * amt
elif a == 'usd' and b == 'btc':
return (float(res[kind]) ** -1) * amt
else:
raise NoSuchPairException('{}/{}'.format(a, b))
register_ticker('bs', 'The Bitstamp ticker (built-in)',
BitstampTicker('https://www.bitstamp.net/api/ticker/'))
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