from icalendar import Event

from data.alert import Alert
from providers.alert.ical_alert_provider import ICALAlertProvider


class WA7BNM(ICALAlertProvider):
    """Alert provider for the WA7BNM contest calendar."""

    POLL_INTERVAL_DAYS = 1
    ALERTS_URL = "https://contestcalendar.com/weeklycontcustom.php"

    def __init__(self, provider_config):
        super().__init__(
            "WA7BNM Contest Calendar", provider_config, self.ALERTS_URL, self.POLL_INTERVAL_DAYS * 24 * 60 * 60
        )

    def event_to_alert(self, event: Event) -> Alert:
        """Convert an iCal event in WA7BNM's format to an Alert object."""

        summary = str(event.get("summary", ""))
        url = str(event.get("url", ""))

        dtstart = event.get("dtstart")
        dtend = event.get("dtend")
        start_timestamp = self._to_utc_timestamp(dtstart.dt)
        end_timestamp = self._to_utc_timestamp(dtend.dt) - 1 if dtend is not None else start_timestamp

        # Convert to our alert format
        alert = Alert(
            source=self.name,
            dx_calls=[],
            comment=summary,
            url=url,
            start_time=start_timestamp,
            end_time=end_timestamp,
            sig="Contest",
        )

        return alert