ics_to_channel/main.py

   1 #!/usr/bin/env python3
   2 # Someone's Mattermost scripts.
   3 #   Copyright (c) 2016-2020 by Someone <someone@somenet.org> (aka. Jan Vales <jan@jvales.net>)
   4 #   published under MIT-License
   5 #
   6 # Send event-reminders to configured channels.
   7 #
   8
   9 import datetime
  10 import pytz
  11 import pprint
  12 import time
  13 import traceback
  14
  15 import icalendar
  16 import requests
  17 import mattermost
  18
  19 import config
  20
  21 def process_ics(mm, now, alias, ics_config):
  22     c = icalendar.Calendar.from_ical(requests.get(ics_config[0]).text)
  23     for ev in c.subcomponents:
  24         if isinstance(ev,icalendar.cal.Event):
  25             spam_mm = False
  26             for remind in ev.subcomponents:
  27                 if isinstance(ev.get("DTSTART").dt,datetime.datetime):
  28                     event_datetime = ev.get("DTSTART").dt
  29                     alarm_datetime = ev.get("DTSTART").dt+remind.get("TRIGGER").dt
  30
  31                     # convert to now's tz
  32                     event_datetime = (event_datetime-datetime.datetime.utcoffset(event_datetime)+datetime.datetime.utcoffset(now)).replace(second=0, tzinfo=now.tzinfo)
  33                     alarm_datetime = (alarm_datetime-datetime.datetime.utcoffset(alarm_datetime)+datetime.datetime.utcoffset(now)).replace(second=0, tzinfo=now.tzinfo)
  34
  35                 else:
  36                     # why the diffrent handling of "full-day" events?!
  37                     event_datetime = datetime.datetime.combine(ev.get("DTSTART").dt, datetime.datetime.min.time()).replace(second=0, tzinfo=now.tzinfo)
  38                     alarm_datetime = (datetime.datetime.combine(ev.get("DTSTART").dt, datetime.datetime.min.time())+remind.get("TRIGGER").dt).replace(second=0, tzinfo=now.tzinfo)
  39
  40                 seconds_to_reminder_time = (now-alarm_datetime).total_seconds()
  41
  42                 if seconds_to_reminder_time >= 0 and seconds_to_reminder_time < 300:
  43                     spam_mm = True
  44
  45             if spam_mm:
  46                 for channel_id in ics_config[1]:
  47                     pprint.pprint(mm.create_post(channel_id, "``BOT-AUTODELETE-FAST`` #termin_reminder Datasource: "+alias+"\nUpcoming event at: **``"+str(event_datetime)+"``**\n### ``"+str(ev.get("SUMMARY"))+"``\n"+str(ev.get("DESCRIPTION"))))
  48
  49
  50
  51 mm = mattermost.MMApi(config.mm_api_url)
  52 mm.login(config.mm_user, config.mm_user_pw)
  53
  54 TS_START = time.time()
  55 now = datetime.datetime.now(tz=pytz.timezone("Europe/Vienna")).replace(second=0, microsecond=0)
  56
  57 for alias, ics_config in config.ics_config.items():
  58     try:
  59         process_ics(mm, now, alias, ics_config)
  60     except:
  61         traceback.print_exc()
  62     print("* ["+("%07.6g"%round(time.time() - TS_START, 5))+"] COMPLETED: "+alias)
  63
  64 mm.logout()