add bitcoin module

modules/bitcoin.py

@@ -0,0 +1,57 @@
+#!/usr/bin/python3
+"""
+bitcoin.py - bitcoin currency conversion
+author: mutantmonkey <mutantmonkey@mutantmonkey.in>
+"""
+
+import decimal
+import web
+
+
+def bitcoin(phenny, input):
+    amount = input.group(2)
+    currency = input.group(3)
+
+    if not amount or not currency:
+        phenny.say("You need to need to specify an amount and a currency, "
+                   "like .bitcoin 1 EUR")
+        return
+
+    if currency == 'BTC':
+        from_btc = True
+        currency = input.group(4)
+    else:
+        from_btc = False
+
+    if not currency:
+        currency = 'USD'
+    currency = currency.strip()[:3]
+
+    try:
+        amount = decimal.Decimal(amount)
+    except decimal.InvalidOperation:
+        phenny.say("Please specify a valid decimal amount to convert.")
+        return
+
+    try:
+        data = web.get('http://data.mtgox.com/api/2/BTC{}/money/ticker'.format(
+            web.quote(currency)))
+    except web.HTTPError:
+        phenny.say("Sorry, I don't know how to convert those right now.")
+        return
+
+    data = web.json(data)
+    rate = decimal.Decimal(data['data']['last_local']['value'])
+
+    if from_btc:
+        amount2 = amount * rate
+        amount2 = round(amount2, 2)
+        currency2 = data['data']['last_local']['currency'].strip()[:3]
+    else:
+        amount2 = amount / rate
+        amount2 = round(amount2, 8)
+        currency2 = 'BTC'
+
+    phenny.say("{amount} {currency}".format(amount=amount2,
+                                            currency=currency2))
+bitcoin.rule = (['bitcoin'], r'(\d+)\s(\w+)(\s\w+)?')