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76 lines
2.6 KiB
Python
76 lines
2.6 KiB
Python
import re
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from icalendar import Event
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from core.enums import Continent
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from data.alert import Alert
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from providers.alert.ical_alert_provider import ICALAlertProvider
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class RSGBICALAlertProvider(ICALAlertProvider):
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"""Generic alert provider for RSGB contest iCal calendars. Builds on the generic iCal alert provider by adding
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handling specific to how RSGB's iCal events are formatted. This is still effectively an abstract class itself;
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RSGB has two contest calendars (HF & VHF) that each subclass this."""
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def __init__(self, name, provider_config, url, poll_interval):
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super().__init__(name, provider_config, url, poll_interval)
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FREQ_PATTERN = re.compile(r"([\d.]+(?:MHz|GHz))|SHF")
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def event_to_alert(self, event: Event) -> Alert:
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"""Convert an iCal event in RSGB's format to an Alert object."""
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summary = str(event.get("summary", "")).strip()
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# Ensure summaries start with "RSGB" to avoid any confusion
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if not summary.startswith("RSGB "):
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summary = "RSGB " + summary
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# Extract freq from summary. HF contests don't give frequencies, all VHF ones do
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match = self.FREQ_PATTERN.search(summary)
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if match:
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freqs_modes = match.group()
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else:
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freqs_modes = "HF bands"
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freqs_modes = freqs_modes + ", "
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# Extract mode from summary
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if "FMAC" in summary:
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freqs_modes = freqs_modes + "FM"
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elif "CW" in summary:
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freqs_modes = freqs_modes + "CW"
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elif "SSB" in summary:
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freqs_modes = freqs_modes + "SSB"
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elif "FT8" in summary:
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freqs_modes = freqs_modes + "FT8"
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elif "FT4" in summary:
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freqs_modes = freqs_modes + "FT4"
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elif "DATA" in summary:
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freqs_modes = freqs_modes + "Data modes"
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else:
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freqs_modes = freqs_modes + "All modes"
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dtstart = event.get("dtstart")
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dtend = event.get("dtend")
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start_timestamp = self._to_utc_timestamp(dtstart.dt)
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end_timestamp = self._to_utc_timestamp(dtend.dt) - 1 if dtend is not None else start_timestamp
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# Convert to our alert format
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alert = Alert(
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source=self.name,
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dx_calls=[],
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dx_country="United Kingdom",
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dx_dxcc_id=235,
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dx_continent=Continent.EU,
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dx_cq_zone=14,
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dx_itu_zone=27,
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dx_flag="🇬🇧",
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freqs_modes=freqs_modes,
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comment=summary,
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start_time=start_timestamp,
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end_time=end_timestamp,
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sig="Contest",
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)
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return alert
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