98 lines
3.4 KiB
Python
98 lines
3.4 KiB
Python
# Display contract shared with the ESPHome calendar page: compact German labels,
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# a bounded number of events, and strings sized for the e-paper layout.
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CALENDAR_NAMES = {
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"calendar.tkrz_kalender": "Arbeit",
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"calendar.privat": "Privat",
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}
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DAY_NAMES = ["Mo", "Di", "Mi", "Do", "Fr", "Sa", "So"]
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MAX_ENTRIES = 8
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# Reserve the right side of each row for start and end times.
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MAX_TITLE_LENGTH = 22
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MAX_META_LENGTH = 35
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# Keep variable event text within the fixed-width e-paper agenda columns.
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def shorten(value, maximum):
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value = (value or "").strip()
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if len(value) <= maximum:
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return value
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return value[: maximum - 3].rstrip() + "..."
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# Convert one Home Assistant calendar event into the small JSON shape consumed
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# by ESPHome, separating all-day, start-time, end-time, and metadata display data.
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def compact_event(event, calendar_name):
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start = event.get("start", "")
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all_day = "T" not in start
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end = event.get("end", "")
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time = "ganzt." if all_day else start[11:16]
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end_time = "" if all_day or "T" not in end else end[11:16]
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location = (event.get("location") or "").split("\n")[0].strip()
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meta = calendar_name
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if location:
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meta += " / " + location
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return {
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"title": shorten(event.get("summary", "Ohne Titel"), MAX_TITLE_LENGTH),
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"time": time,
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"end": end_time,
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"meta": shorten(meta, MAX_META_LENGTH),
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"all_day": int(all_day),
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}
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# Read the calendar.get_events response supplied by the calling template sensor
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# and collect events under the date on which they should appear in the agenda.
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calendar_data = data.get("calendar", {})
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today = str(data.get("now", ""))[:10]
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events_by_date = {}
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for calendar_id, calendar in calendar_data.items():
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calendar_name = CALENDAR_NAMES.get(calendar_id, calendar_id.split(".")[-1].capitalize())
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for event in calendar.get("events", []):
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start = event.get("start", "")
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end = event.get("end", "")
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event_date = start[:10]
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end_date = end[:10]
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# Ignore malformed or already finished entries. All-day event end dates
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# are exclusive in Home Assistant; timed events ending today may still be
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# active. Multi-day entries remain visible on today's date rail.
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all_day = "T" not in start
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if not event_date or (all_day and end_date <= today) or (not all_day and end_date < today):
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continue
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if event_date < today:
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event_date = today
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events_by_date.setdefault(event_date, []).append(
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compact_event(event, calendar_name)
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)
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# Sort day groups and events, put all-day entries first, and cap the payload so
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# deserializing it stays safe on the ESP32 without PSRAM.
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entries = []
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entry_count = 0
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for date in sorted(events_by_date):
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if entry_count >= MAX_ENTRIES:
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break
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events = events_by_date[date]
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events.sort(key=lambda item: (item["all_day"] == 0, item["time"]))
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remaining = MAX_ENTRIES - entry_count
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events = events[:remaining]
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entry_count += len(events)
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parsed_date = dt_util.parse_datetime(date)
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entries.append(
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{
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"day": parsed_date.day,
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"weekday": DAY_NAMES[parsed_date.weekday()],
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"today": int(date == today),
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"events": events,
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}
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)
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# Return only the normalized agenda payload to the Home Assistant template sensor.
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output["entries"] = entries
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