from __future__ import annotations

import unittest
from datetime import datetime, timedelta
from zoneinfo import ZoneInfo

from calendar_feeds import _parse_ics


class CalendarFeedTestCase(unittest.TestCase):
    def test_weekly_recurrence_returns_future_occurrences(self) -> None:
        timezone = ZoneInfo("America/New_York")
        starts_at = datetime.now(timezone).replace(
            hour=13,
            minute=0,
            second=0,
            microsecond=0,
        ) - timedelta(days=7)
        ends_at = starts_at.replace(hour=16)
        raw_calendar = f"""BEGIN:VCALENDAR
X-WR-CALNAME:Robot-U
BEGIN:VEVENT
SUMMARY:Robotics Club
DTSTART;TZID=America/New_York:{starts_at.strftime("%Y%m%dT%H%M%S")}
DTEND;TZID=America/New_York:{ends_at.strftime("%Y%m%dT%H%M%S")}
RRULE:FREQ=WEEKLY
LOCATION:44 Portland Street
END:VEVENT
END:VCALENDAR
"""

        _calendar_name, events = _parse_ics(raw_calendar, "https://example.com/calendar.ics")

        self.assertGreaterEqual(len(events), 1)
        self.assertEqual(events[0].title, "Robotics Club")
        self.assertGreaterEqual(events[0].starts_at, datetime.now(ZoneInfo("UTC")))
        self.assertEqual(events[0].starts_at.tzinfo, timezone)
        self.assertEqual(events[0].mode, "44 Portland Street")


if __name__ == "__main__":
    unittest.main()