From 9c21bd7be0380e8e0d62a2c54cfb97f37d5b131e Mon Sep 17 00:00:00 2001
From: Alexander Sulfrian <alexander@sulfrian.net>
Date: Fri, 4 Dec 2015 02:19:11 +0100
Subject: Initial plugin to keep the spline topic up-to-date

---
 update_topic.py | 124 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 update_topic.py

diff --git a/update_topic.py b/update_topic.py
new file mode 100644
index 0000000..2a67aa2
--- /dev/null
+++ b/update_topic.py
@@ -0,0 +1,124 @@
+#!/usr/bin/env python
+"""
+update_topic.py - Keep topic in #spline up-to-date
+Copyright 2015, Alexander Sulfrian <alex@spline.inf.fu-berlin.de>
+Licensed under the Eiffel Forum License 2.
+
+http://inamidst.com/phenny/
+"""
+
+import asyncore
+import re
+import socket
+import threading
+from datetime import datetime, timedelta
+from dateutil.relativedelta import relativedelta
+from calendar import TUESDAY
+
+
+CHANNEL = '#spline'
+FROMAT = 'http://pad.spline.de/treffen%y%m%d'
+REGEX = re.compile(r'.*(http://pad\.spline\.de/treffen[0-9]{6}).*')
+
+
+def setup(phenny):
+    Scheduler(phenny)
+
+
+class Timer(object):
+    def __init__(self, sock):
+        self.sock = sock
+        self.start()
+
+    def start(self):
+        sleep = seconds_until(get_next_meeting() + timedelta(days=1))
+        self.timer = threading.Timer(sleep, self.run)
+        self.timer.start()
+
+    def run(self):
+        self.sock.send('.')
+        self.start()
+
+    def cancel(self):
+        self.timer.cancel()
+
+
+class Scheduler(asyncore.dispatcher):
+    def __init__(self, phenny):
+        self.phenny = phenny
+        self.phenny._orig_close = self.phenny.close
+        self.phenny.close = (lambda: self._phenny_close())
+
+	recv_timer, send_timer = socket.socketpair()
+        self.timer = Timer(send_timer)
+        asyncore.dispatcher.__init__(self, recv_timer)
+
+    def _phenny_close(self):
+        self.close()
+        self.phenny._orig_close()
+
+    def close(self):
+        self.timer.cancel()
+        asyncore.dispatcher.close()
+
+    def handle_read(self):
+       data = self.recv(8192)
+       if data:
+           self._exec()
+       else:
+           self.close()
+
+    def _exec(self):
+        # get topic, topic update is handled if a topic is received
+        self.phenny.write(['TOPIC'], CHANNEL)
+
+
+def seconds_until(when):
+    today = datetime.today().date()
+    return (when - today).total_seconds()
+
+
+def get_next_meeting():
+    today = datetime.today()
+    return (today + relativedelta(months=+1, day=1, weekday=TUESDAY)).date()
+
+
+def update_topic(phenny, channel, topic):
+    if channel != CHANNEL:
+        return
+
+    match = REGEX.match(topic)
+    if match is None:
+        return
+
+    new_topic = topic.replace(
+        match.groups()[0],
+        get_next_meeting().strftime(FROMAT),
+        1)
+
+    if new_topic != topic:
+        print('Updating topic')
+        phenny.msg('ChanServ', 'TOPIC %s %s' % (channel, new_topic))
+
+
+def topic_change(phenny, input):
+    update_topic(phenny, input.sender, input)
+topic_change.event = 'TOPIC'
+topic_change.rule = r'.*'
+
+
+def topic_reply(phenny, input):
+    update_topic(phenny, input.args[1], input)
+topic_reply.event = '332'
+topic_reply.rule = r'.*'
+
+
+def request_topic(phenny, input):
+    parts = input.split(None, 1)
+    if len(parts) < 2:
+        phenny.notice(input.nick, 'Usage: %s #channel' % parts[0])
+    else:
+        phenny.write(['TOPIC'], parts[1])
+        phenny.notice(input.nick, 'Done.')
+request_topic.rule = r'^!(update|topic|update-topic)(?: +(.*))?$'
+request_topic.event = 'NOTICE'
-- 
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