Finetuning of available space

event's end time.

configuration.yaml

@@ -35,6 +35,9 @@ utility_meter: !include utility_meters.yaml
 mqtt: !include mqtt.yaml
 mqtt_statestream: !include mqtt_statestream.yaml
 
+# Calendar data is normalised in a sandboxed script before ESPHome receives it.
+python_script:
+
 # Template sensors
 template: !include template.yaml
 

python_scripts/epaper_calendar_data.py

@@ -0,0 +1,88 @@
+# Calendar data is compacted here so the ESP32 only receives display-ready entries.
+CALENDAR_NAMES = {
+    "calendar.tkrz_kalender": "Arbeit",
+    "calendar.privat": "Privat",
+}
+DAY_NAMES = ["Mo", "Di", "Mi", "Do", "Fr", "Sa", "So"]
+MAX_ENTRIES = 8
+# Reserve the right side of each row for start and end times.
+MAX_TITLE_LENGTH = 25
+MAX_META_LENGTH = 35
+
+
+def shorten(value, maximum):
+    value = (value or "").strip()
+    if len(value) <= maximum:
+        return value
+    return value[: maximum - 3].rstrip() + "..."
+
+
+def compact_event(event, calendar_name):
+    start = event.get("start", "")
+    all_day = "T" not in start
+    end = event.get("end", "")
+    time = "ganztägig" if all_day else start[11:16]
+    end_time = "" if all_day or "T" not in end else end[11:16]
+
+    location = (event.get("location") or "").split("\n")[0].strip()
+    meta = calendar_name
+    if location:
+        meta += " / " + location
+
+    return {
+        "title": shorten(event.get("summary", "Ohne Titel"), MAX_TITLE_LENGTH),
+        "time": time,
+        "end": end_time,
+        "meta": shorten(meta, MAX_META_LENGTH),
+        "all_day": int(all_day),
+    }
+
+
+calendar_data = data.get("calendar", {})
+today = str(data.get("now", ""))[:10]
+events_by_date = {}
+
+for calendar_id, calendar in calendar_data.items():
+    calendar_name = CALENDAR_NAMES.get(calendar_id, calendar_id.split(".")[-1].capitalize())
+    for event in calendar.get("events", []):
+        start = event.get("start", "")
+        end = event.get("end", "")
+        event_date = start[:10]
+        end_date = end[:10]
+
+        # Ignore malformed or already finished entries. All-day event end dates
+        # are exclusive in Home Assistant; timed events ending today may still be
+        # active. Multi-day entries remain visible on today's date rail.
+        all_day = "T" not in start
+        if not event_date or (all_day and end_date <= today) or (not all_day and end_date < today):
+            continue
+        if event_date < today:
+            event_date = today
+
+        events_by_date.setdefault(event_date, []).append(
+            compact_event(event, calendar_name)
+        )
+
+entries = []
+entry_count = 0
+for date in sorted(events_by_date):
+    if entry_count >= MAX_ENTRIES:
+        break
+
+    events = events_by_date[date]
+    events.sort(key=lambda item: (item["all_day"] == 0, item["time"]))
+    remaining = MAX_ENTRIES - entry_count
+    events = events[:remaining]
+    entry_count += len(events)
+
+    parsed_date = dt_util.parse_datetime(date)
+    entries.append(
+        {
+            "day": parsed_date.day,
+            "weekday": DAY_NAMES[parsed_date.weekday()],
+            "today": int(date == today),
+            "events": events,
+        }
+    )
+
+output["entries"] = entries

template.yaml

@@ -49,6 +49,7 @@
       name: Sun Setting Template
       state: '{{ as_timestamp(states.sun.sun.attributes.next_setting) | timestamp_custom
         (''%H:%M'') }}'
+
     - name: "power_other"
       unique_id: '5579422933393'
       unit_of_measurement: "W"
@@ -79,6 +80,35 @@
       attributes:
         last_reset: '1970-01-01T00:00:00+00:00'
 
+  # Compact calendar feed for the e-paper display. The actual event data lives in
+  # the `entries` attribute, which ESPHome reads as a text sensor.
+  - trigger:
+      - trigger: homeassistant
+        event: start
+      - trigger: time_pattern
+        minutes: /15
+    action:
+      - action: calendar.get_events
+        target:
+          entity_id:
+            - calendar.tkrz_kalender
+            - calendar.privat
+        data:
+          duration:
+            days: 14
+        response_variable: calendar_response
+      - action: python_script.epaper_calendar_data
+        data:
+          calendar: "{{ calendar_response }}"
+          now: "{{ now().date() }}"
+        response_variable: calendar_converted
+    sensor:
+      - name: Epaper Kalenderdaten
+        unique_id: epaper_calendar_data
+        state: "{{ calendar_converted.entries | count }}"
+        attributes:
+          entries: "{{ calendar_converted.entries }}"
+
 # Shelly 3EM cumulative sensors (incl. PV)
   - sensor:
       # Template sensor for values of power import (active_power > 0)