Allow bot to be run on different networks (#13)

Author: MarkusH

README.md

@@ -6,14 +6,12 @@ This is the bot which replaces the following types of mentions with their URLs:
 * `"!nnnn"` or `"PRnnnn"` -- Pull request nnnn submitted to the django/django GitHub repo
 * `"hhhhhhh"` (7 or more chars) -- Commit with ID hhhhhhh in the django/django GitHub repo
 
-It has a registered nick in Freenode: *ticketbot*.
-
 ## Local setup
 
 1. Create a virtualenv making sure you use the same Python version as the one specified to Heroku in `runtime.txt`:
 
        $ curl https://raw.githubusercontent.com/django/ticketbot/master/runtime.txt
-       python-3.6.3
+       python-3.7.2
 
 2. Once you've created and activated the virtualenv, install project dependencies:
 
@@ -23,13 +21,19 @@ It has a registered nick in Freenode: *ticketbot*.
 
 It needs the following env vars:
 
-* `NICKSERV_PASS` -- The bot's Freenode user password
+* `NICKSERV_PASS` -- The bot's user password
+* `NICKSERV_USER` -- The bot's username
+* `IRC_HOST` -- The IRC server hostname to connect to
+* `IRC_PORT` -- The IRC server port to connect to
 * `CHANNELS` -- A comma-separated list of channels it will auto-join to
 
 Example, for running it locally:
 
     $ export NICKSERV_PASS=password
-    $ export CHANNELS=#django-social,#django,#django-dev,#django-sprint,#django-core
+    $ export NICKSERV_USER=username
+    $ export IRC_HOST=irc.libera.chat
+    $ export IRC_PORT=6697
+    $ export CHANNELS=#django-social,#django,#django-dev,#django-sprint
     $ python ticketbot.py
 
 ## Tests

ticketbot.py

@@ -2,15 +2,13 @@
 The #django-dev ticket bot.
 """
 
-from collections import namedtuple
 import os
 import re
+from collections import namedtuple
 
 import irc3
 import requests
 
-NICK = 'ticketbot'
-
 ticket_re = re.compile(r'(?<!build)(?:^|\s)#(\d+)')
 ticket_url = "https://code.djangoproject.com/ticket/%s"
 
@@ -115,20 +113,23 @@ def process_msg_or_privmsg(self, mask, event, target, data, **kw):
 
 def main():
     password = os.environ['NICKSERV_PASS']
+    username = os.environ['NICKSERV_USER']
+    host = os.environ['IRC_HOST']
+    port = int(os.environ['IRC_PORT'])
     channels = os.environ['CHANNELS'].split(',')
     bot = irc3.IrcBot.from_config(dict(
-        nick=NICK,
-        username=NICK,
+        nick=username,
+        username=username,
         realname='Django project development helper bot',
-        sasl_username=NICK,
+        sasl_username=username,
         sasl_password=password,
         url='https://github.com/django/ticketbot',
         autojoins=channels,
-        host='chat.freenode.net', port=6667, ssl=False,
+        host=host, port=port, ssl=True,
         includes=[
             'irc3.plugins.core',
             'irc3.plugins.sasl',
-            __name__,  # this register our Plugin
+            __name__,  # this registers our plugin
         ],
         # debug=True,
         # verbose=True,