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#!/usr/bin/env python

# coding=utf-8

# Copyright (c) 2014-2018 Eugene Ciurana (pr3d4t0r)

# All rights reserved.

#

# Version - see _VERSION global

#

# 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

#

# Version history: https://github.com/pr3d4t0r/weechat-btc-ticker

from __future__ import absolute_import

from __future__ import division

from __future__ import print_function

from __future__ import unicode_literals

from datetime import datetime

import json

import weechat

# *** constants ***

CRYPTOCUR_API_TIME_OUT = 15000 # ms

CRYPTOCUR_API_URI = 'url:https://api.cryptonator.com/api/ticker/%s-%s'

DEFAULT_CRYPTO_CURRENCY = 'btc'

DEFAULT_FIAT_CURRENCY = 'usd'

VALID_CRYPTO_CURRENCIES = [ DEFAULT_CRYPTO_CURRENCY, 'eth', 'bch', 'xrp', 'xem', 'ltc', 'dash', 'neo', 'etc', ]

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

_VERSION = '2.1.0'

COMMAND_NICK = 'tick'

# *** Functions ***

def extractRelevantInfoFrom(rawTicker):

payload = json.loads(rawTicker)

result = payload['ticker']

return result

def display(buffer, ticker):

baseCurrency = ticker['base']

targetCurrency = ticker['target']

price = float(ticker['price'])

volume = float(ticker['volume'])

change = float(ticker['change'])

now = datetime.now().strftime('%Y-%m-%dT%H:%M:%S')

output = '%s:%s price = %5.2f, volume = %5.2f, change = %4.2f on %s' % (

baseCurrency,

targetCurrency,

price,

volume,

change,

now)

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

def displayCurrentTicker(buffer, rawTicker):

if rawTicker:

ticker = extractRelevantInfoFrom(rawTicker)

display(buffer, ticker)

else:

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

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

if returnCode == weechat.WEECHAT_HOOK_PROCESS_ERROR:

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

return weechat.WEECHAT_RC_OK

displayCurrentTicker('', out)

return weechat.WEECHAT_RC_OK

def fetchJSONTickerFor(cryptoCurrency, fiatCurrency):

serviceURI = CRYPTOCUR_API_URI % (cryptoCurrency, fiatCurrency)

weechat.hook_process(serviceURI, CRYPTOCUR_API_TIME_OUT, 'tickerPayloadHandler', "")

def displayCryptoCurrencyTicker(data, buffer, arguments):

cryptoCurrency = DEFAULT_CRYPTO_CURRENCY

fiatCurrency = DEFAULT_FIAT_CURRENCY

if len(arguments):

tickerArguments = arguments.split(' ') # 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, '%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, '%s\tInvalid fiat currency; using default %s' % (COMMAND_NICK, DEFAULT_FIAT_CURRENCY))

fetchJSONTickerFor(cryptoCurrency, fiatCurrency)

return weechat.WEECHAT_RC_OK

# *** main ***

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

cryptoCurrencies = '|'.join(sorted(VALID_CRYPTO_CURRENCIES))

fiatCurrencies = '|'.join(VALID_FIAT_CURRENCIES)

argsWeeChat = '[%s [%s] ]' % (cryptoCurrencies, fiatCurrencies)

weechat.hook_command(COMMAND_NICK, 'Display common crypto currency spot exchange values conveted to fiat currencies like USD or EUR',\

argsWeeChat, ' btc = Bitcoin\n eth = Ethereum\n bch = Bitcoin Cash\n xrp = Ripple\n xem = NEM\n ltc = Litecoin\n dash = Dash\n neo = NEO\n etc = Ethereum Classic\n\n usd = US dollar\n eur = euro\n rur = Russian ruble', '', 'displayCryptoCurrencyTicker', '')