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#!/usr/bin/env python

# coding=utf-8

# Copyright (c) 2014, Eugene Ciurana (pr3d4t0r)

# All rights reserved.

#

# Version 1.1.1

#

# Redistribution and use in source and binary forms, with or without modification,

# are permitted provided that the following conditions are met:

#

# * Redistributions of source code must retain the above copyright notice, this

# list of conditions and the following disclaimer.

#

# * Redistributions in binary form must reproduce the above copyright notice, this

# list of conditions and the following disclaimer in the documentation and/or

# other materials provided with the distribution.

#

# * Neither the name of the {organization} nor the names of its

# contributors may be used to endorse or promote products derived from

# this software without specific prior written permission.

#

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND

# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR

# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON

# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# Main repository, version history: https://github.com/pr3d4t0r/weechat-btc-ticker

from time import gmtime, strftime

import json

import weechat

# *** Symbolic constants ***

BTCE_API_TIME_OUT = 15000 # ms

BTCE_API_URI = u'url:https://btc-e.com/api/2/%s_%s/ticker'

DEFAULT_CRYPTO_CURRENCY = u'btc'

DEFAULT_FIAT_CURRENCY = u'usd'

VALID_CRYPTO_CURRENCIES = [ DEFAULT_CRYPTO_CURRENCY, u'ltc' ]

VALID_FIAT_CURRENCIES = [ DEFAULT_FIAT_CURRENCY, u'eur', u'rur' ]

COMMAND_NICK = u'tick'

# *** Functions ***

def extractRelevantInfoFrom(rawTicker):

payload = json.loads(rawTicker)

result = dict()

result[u'avg'] = payload[u'ticker'][u'avg']

result[u'buy'] = payload[u'ticker'][u'buy']

result[u'high'] = payload[u'ticker'][u'high']

result[u'last'] = payload[u'ticker'][u'last']

result[u'low'] = payload[u'ticker'][u'low']

result[u'sell'] = payload[u'ticker'][u'sell']

result[u'updated'] = unicode(payload[u'ticker'][u'updated'])

result[u'time'] = strftime(u'%Y-%b-%d %H:%M:%S Z', gmtime(payload[u'ticker'][u'updated']))

return result

def display(buffer, ticker, currencyLabel, fiatCurrencyLabel):

output = (u'%s:%s sell = %4.2f, buy = %4.2f, last = %4.2f; high = %4.2f, low = %4.2f, avg = %4.2f || via BTC-e on %s' % \

(currencyLabel, fiatCurrencyLabel, \

ticker[u'sell'], ticker[u'buy'], ticker[u'last'], \

ticker[u'high'], ticker[u'low'], ticker[u'avg'], \

ticker[u'time']))

weechat.command(buffer, u'/say %s' % output)

def displayCurrentTicker(buffer, rawTicker, cryptoCurrency, fiatCurrency):

if rawTicker is not None:

ticker = extractRelevantInfoFrom(rawTicker)

display(buffer, ticker, cryptoCurrency.upper(), fiatCurrency.upper())

else:

weechat.prnt(buffer, u'%s\t*** UNABLE TO READ DATA FROM: %s ***' % (COMMAND_NICK, serviceURI))

def tickerPayloadHandler(tickerData, service, returnCode, out, err):

if returnCode == weechat.WEECHAT_HOOK_PROCESS_ERROR:

weechat.prnt(u"", u"%s\tError with service call '%s'" % (COMMAND_NICK, service))

return weechat.WEECHAT_RC_OK

tickerInfo = tickerData.split(u' ')

displayCurrentTicker('', out, tickerInfo[0], tickerInfo[1])

return weechat.WEECHAT_RC_OK

def fetchJSONTickerFor(cryptoCurrency, fiatCurrency):

serviceURI = BTCE_API_URI % (cryptoCurrency, fiatCurrency)

tickerData = cryptoCurrency+u' '+fiatCurrency

weechat.hook_process(serviceURI, BTCE_API_TIME_OUT, u'tickerPayloadHandler', tickerData)

def displayCryptoCurrencyTicker(data, buffer, arguments):

cryptoCurrency = DEFAULT_CRYPTO_CURRENCY

fiatCurrency = DEFAULT_FIAT_CURRENCY

if len(arguments) > 0:

tickerArguments = arguments.split(u' ') # no argparse module; these aren't CLI, but WeeChat's arguments

if len(tickerArguments) >= 1:

if tickerArguments[0].lower() in VALID_CRYPTO_CURRENCIES:

cryptoCurrency = tickerArguments[0].lower()

else:

weechat.prnt(buffer, u'%s\tInvalid crypto currency; using default %s' % (COMMAND_NICK, DEFAULT_CRYPTO_CURRENCY))

if len(tickerArguments) == 2:

if tickerArguments[1].lower() in VALID_FIAT_CURRENCIES:

fiatCurrency = tickerArguments[1].lower()

else:

weechat.prnt(buffer, u'%s\tInvalid fiat currency; using default %s' % (COMMAND_NICK, DEFAULT_FIAT_CURRENCY))

fetchJSONTickerFor(cryptoCurrency, fiatCurrency)

return weechat.WEECHAT_RC_OK

# *** main ***

weechat.register(u'btc_ticker', u'pr3d4t0r', u'1.1.1', u'BSD', u'Display a crypto currency spot price ticker (BTC, LTC) in the active buffer', u'', u'UTF-8')

weechat.hook_command(COMMAND_NICK, u'Display Bitcoin or other crypto currency spot exchange value in a fiat currency like USD or EUR',\

u'[btc|ltc|nmc [usd|eur|rur] ]', u' btc = Bitcoin\n ltc = Litecoin\n nmc = Namecoin\n usd = US dollar\n eur = euro\n rur = Russian ruble', u'', u'displayCryptoCurrencyTicker', u'')