Support recurring icalendar events about cabot

[dbuxton]

This seems really hard (to me, without any idea as to whether there is decent support in icalendar for parsing these events). Also I would query whether or not it's really appropriate for a proper response schedule - the whole point is that these need to be modified to take account of holidays, anniversary plans, travel, etc.

What's the use case here?

[ipmb]

It's easier to set a schedule and exclude dates instead of manually adding an item for every day of the year. Doing it manually also increases the risk of human error. Sample use case:

ipmb is typically on duty M-F excluding March 27-28, 2014 because vacation/travel/etc.

I can create the recurring event in Google calendar and then delete a single (or multiple occurrences).

That looks like this in the .ics:

BEGIN:VEVENT
DTSTART;TZID=America/Mexico_City:20140305T100000
DTEND;TZID=America/Mexico_City:20140305T150000
RRULE:FREQ=WEEKLY;BYDAY=MO,TU,WE,TH,FR
EXDATE;TZID=America/Mexico_City:20140328T100000
EXDATE;TZID=America/Mexico_City:20140327T100000
DTSTAMP:20140314T152657Z
UID:[email protected]
CREATED:20140306T042702Z
DESCRIPTION:
LAST-MODIFIED:20140313T231344Z
LOCATION:
SEQUENCE:0
STATUS:CONFIRMED
SUMMARY:ipmb
TRANSP:OPAQUE
END:VEVENT

Notice RRULE and EXDATE.

[ipmb]

It looks like python-dateutil has good support for rrule. I'll try to dig in further.

[dbuxton]

I also found https://pypi.python.org/pypi/pyICSParser - according to this SO question it should help.

[ipmb]

I have something that seems to work here. I'll do some more testing and submit a proper pull request. lincolnloop/cabot@python-package...recurring-events

[JeanFred]

Closing this per #396