Updated ics_calendar to restore compatibility with HA

custom_components/ics_calendar/parserevent.py

@@ -0,0 +1,20 @@
+"""Provide ParserEvent class."""
+
+import dataclasses
+
+from homeassistant.components.calendar import CalendarEvent
+
+
+@dataclasses.dataclass
+class ParserEvent(CalendarEvent):
+    """Class to represent CalendarEvent without validation."""
+
+    def validate(self) -> None:
+        """Invoke __post_init__ from CalendarEvent."""
+        return super().__post_init__()
+
+    def __post_init__(self) -> None:
+        """Don't do validation steps for this class."""
+        # This is necessary to prevent problems when creating events that don't
+        # have a summary. We'll add a summary after the event is created, not
+        # before, to reduce code repitition.