main.py

#!/usr/bin/env python3
import datetime

import requests
import icalendar
import os


def set_mumble(event, start, end):
    import mice

    s = mice.murmur.getAllServers()[0]
    state = s.getChannelState(int(os.environ['CHANNEL_ID']))
    now = datetime.datetime.now()

    if event is not None:
        if start > now:
            timediff = start - now
            relname = "in {} minuten".format(int(timediff.total_seconds() // 60))
        else:
            timediff = end - now
            relname = "noch {} minuten".format(int(timediff.total_seconds() // 60))

        summary = event.decoded("summary").decode()
        summary = summary.replace("Veranstaltungsreihe/", "")

        state.name = "[{}] Veranstaltung: {}".format(relname, summary)
    else:
        state.name = "Veranstaltung: Keine Aktive Veranstaltung"

    s.setChannelState(state)


r = requests.get("https://das-labor.org/termine.ics")
data = r.text

cal = icalendar.Calendar.from_ical(data)

start_date = datetime.datetime.now() - datetime.timedelta(minutes=30)
now = datetime.datetime.now()

print("Checking between {} and {}".format(start_date, now))

selected_event = (None, None, None)

for event in cal.subcomponents:
    start = event.decoded("dtstart")
    end = event.decoded("dtend", None)
    if not isinstance(start, datetime.datetime):
        print("Warning: {} has no time set".format(event.decoded("summary")))
        start = datetime.datetime.combine(start, datetime.datetime.min.time())
    if end is None:
        end = start + datetime.timedelta(hours=2)

    if end > now > start - datetime.timedelta(minutes=30):
        print("{} - {}: {}".format(start, end, event.decoded("summary")))
        selected_event = (event, start, end)

set_mumble(*selected_event)