#!/usr/bin/env python3

from icalendar import Calendar

def format_cal(start, end, description):
    str  = "Start: {:%Y-%m-%d %H:%M}\n".format(start)
    str += "End:   {:%Y-%m-%d %H:%M}\n\n".format(end)
    if description is not None:
        str += description

    return str


with open('/dev/stdin', 'r') as f:
    cal = Calendar.from_ical(f.read())

for c in cal.walk():
    if c.name == "VEVENT":
        print(format_cal(
            c.get('dtstart').dt,
            c.get('dtend').dt,
            c.get('description')))