140 lines
4.2 KiB
Python
Executable file
140 lines
4.2 KiB
Python
Executable file
#!/usr/bin/python3
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# Makes the weekly meeting schedule, following some rules:
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# * Recognize a bunch of US-centric holidays and move meeting from Mon -> Tue
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# * Put in special notices when US daylight/standard changes occur
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# * Never hold a meeting from December 23 through December 31 inclusive
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#
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# Using the script:
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# - it's recommended to use a venv
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# - pip install -r requirements.txt
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# - python generate_calendar.py prune 2022
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# - python generate_calendar.py generate 2024
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# - git commit meeting.ical -m"update for 2024"
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import datetime
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import pathlib
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import sys
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import click
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import pytz
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import icalendar
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from holidays.countries.united_states import UnitedStates
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from datetime import date
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from dateutil.relativedelta import relativedelta as rd, MO, FR, TH, TU
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from holidays.constants import JAN, FEB, MAR, APR, MAY, JUN, JUL, AUG, SEP, \
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OCT, \
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NOV, DEC
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CALENDAR_FILE = pathlib.Path("meeting.ical")
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class CircuitPythonHoliday(UnitedStates):
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def _populate(self, year):
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super()._populate(year)
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for k, v in list(self.items()):
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if 'Lincoln' in v or 'Columbus' in v:
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del self[k]
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self[date(year, OCT, 1) + rd(weekday=MO(+2))] = "Indigenous Peoples' Day"
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hols = CircuitPythonHoliday(state='NY')
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tz = pytz.timezone('US/Eastern')
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meeting_duration = datetime.timedelta(seconds=3600)
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def localize(d):
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d = tz.localize(d)
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return d
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now = localize(datetime.datetime.now())
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def first_monday(year):
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d = datetime.datetime(year, 1, 1, 14)
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while d.weekday() != 0:
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d += datetime.timedelta(days=1)
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return d
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def add_holiday_notice(calendar, d, note):
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d = localize(d)
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event = icalendar.Event()
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event.add('summary', note + ' -- Meeting Postponed due to holiday')
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event.add('dtstart', icalendar.vDatetime(d))
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event.add('dtend', icalendar.vDatetime(d + meeting_duration))
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event.add('dtstamp', now)
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calendar.add_component(event)
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def add_meeting_notice(calendar, d, note):
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d = localize(d)
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event = icalendar.Event()
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event.add('summary', 'CircuitPython Discord Meeting' + note)
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event.add('dtstart', icalendar.vDatetime(d))
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event.add('dtend', icalendar.vDatetime(d + meeting_duration))
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event.add('dtstamp', icalendar.vDatetime(now))
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if 0: # This doesn't work, makes google not show the calendar at all
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event.add('conference',
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'https://adafru.it/discord',
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parameters= {'VALUE':'URI'})
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calendar.add_component(event)
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def make_calendar(calendar, year):
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d0 = first_monday(year)
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olddst = None
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while d0 < datetime.datetime(year, 12, 23):
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d = d0
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hol = hols.get(d, None)
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if hol is not None:
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add_holiday_notice(calendar, d, hol)
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d = d + datetime.timedelta(days=1)
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dst = tz.utcoffset(d)
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if dst != olddst:
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note = '\n(2PM in UTC%+d)' % (
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dst.total_seconds()//3600)
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olddst = dst
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else:
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note = ''
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add_meeting_notice(calendar, d, note)
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d0 += datetime.timedelta(days=7)
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def empty_calendar():
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calendar = icalendar.Calendar()
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calendar.add('prodid', '-//circuitpython weekly meeting generator//circuitpython.org//')
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calendar.add('version', '0.0.0-beta0')
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return calendar
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@click.group
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@click.pass_context
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def cli(ctx):
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if CALENDAR_FILE.exists():
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with CALENDAR_FILE.open('rb') as f:
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content = f.read()
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calendar = icalendar.Calendar.from_ical(content)
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else:
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calendar = empty_calendar()
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ctx.obj = calendar
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@cli.command
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@click.argument("year", type=int)
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@click.pass_context
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def generate(ctx, year):
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calendar = ctx.obj
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make_calendar(calendar, year)
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with CALENDAR_FILE.open('wb') as f:
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f.write(calendar.to_ical())
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@cli.command
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@click.argument("year", type=int)
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@click.pass_context
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def prune(ctx, year):
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thresh = localize(datetime.datetime(year+1, 1, 1))
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calendar = ctx.obj
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calendar.subcomponents = [
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component for component in calendar.subcomponents
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if component.name != 'VEVENT'
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or component['DTSTART'].dt >= thresh]
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with CALENDAR_FILE.open('wb') as f:
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f.write(calendar.to_ical())
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if __name__ == '__main__':
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cli()
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