bitcoinbrillobot.coffee

# Description:
#   Find the latest Bitcoin price in specified currency
#
# Dependencies:
#   "cheerio": ""
#
# Configuration:
#   None
#
# Commands:
#   hubot bitcoin price (in) <currency>
#
# Author:
#   Sven Wegerhoff

module.exports = (robot) ->
  robot.respond /bitcoin preis\s(in\s)?(.*)/i, (msg) ->
    currency = msg.match[2].trim().toUpperCase()
    bitcoinPrice(msg, currency)

bitcoinPrice = (msg, currency) ->
  msg
  .send "Looking up... sit tight..."
  msg
  .http("http://api.bitcoincharts.com/v1/weighted_prices.json")
  .get() (err, res, body) ->
    msg.send "#{getPrice(currency, body)}"

getPrice = (currency, data) ->
  # "EUR": {"7d": "393.47", "30d": "386.27", "24h": "394.00"}
  lastPrice   = data[currency]["24h"]
  highPrice   = data[currency]["7d"]
  lowPrice    = data[currency]["30d"]
  priceSymbol = null

  if lastPrice == null
    "Can't find the price for #{currency}. :("
  else
    "#{currency}: #{lastPrice} (7d: #{highPrice} | 30d: #{lowPrice})"