septicycles.py

from math import floor
from datetime import datetime, timedelta
from time import mktime

import plugins

def _initialise(bot):
    plugins.register_handler(_handle_cp_action)


def _handle_cp_action(bot, event, command):
    if event.text.startswith('+cp'):
        cps = current_cycle()
        n = next_checkpoint(cps)
        c = cycle_end(cps)
        yield from bot.coro_send_message(event.conv, _("Next checkpoint is {} <b>{}</b>.\nThis cycle ends {} <b>{}</b>.").format(n['date'], n['time'], c['date'], c['time']))
    else:
        pass

EPOCH=1389150000000
CYCLE_LENGTH=630000000
CHECKPOINT_LENGTH=18000

def current_cycle():
    present = datetime.now()
    tt = datetime.timetuple(present)
    now = mktime(tt) * 1000
    cycle = floor((now - EPOCH) / CYCLE_LENGTH)
    cycle_display = cycle + 1
    start = datetime.fromtimestamp(CHECKPOINT_LENGTH+((EPOCH + (cycle*CYCLE_LENGTH))/1000))
    year = start.year

    checkpoints = []
    for i in range(0, 35):
        next = (start > present) and (present + timedelta(seconds=CHECKPOINT_LENGTH)) > start
        cp = {
            'date': start.strftime('%a %d %b'),
            'time': start.strftime('%I:%M%p'),
            'next': next,
            'past': (start < present)
        }
        checkpoints.append(cp)
        start = start + timedelta(seconds=CHECKPOINT_LENGTH)
    return checkpoints

def next_checkpoint(cps):
    future = [cp for cp in cps if cp['past'] == False]
    return future[0]

def cycle_end(cps):
    return cps[-1]

# def main():
#     cps = current_cycle()
#     print next_checkpoint(cps)
#     print cycle_end(cps)

# if __name__ == "__main__":
#     main()