Support additional meta information in calendar events for usage with own frontend only

aleksis/core/frontend/components/calendar/CalendarOverview.vue

@@ -195,6 +195,7 @@ export default {
             end: new Date(event.end),
             color: event.color ? event.color : cf.color,
             timed: !event.allDay,
+            meta: JSON.parse(event.meta),
           }))
         );
     },

aleksis/core/frontend/components/calendar/calendarOverview.graphql

@@ -15,6 +15,7 @@ query ($start: Date, $end: Date) {
         uid
         allDay
         status
+        meta
       }
     }
   }

aleksis/core/schema/calendar.py

@@ -15,6 +15,7 @@ class CalendarEventType(ObjectType):
     uid = graphene.String()
     all_day = graphene.Boolean()
     status = graphene.String()
+    meta = graphene.String()
 
     def resolve_name(root, info, **kwargs):
         return root["SUMMARY"]
@@ -40,6 +41,9 @@ class CalendarEventType(ObjectType):
     def resolve_status(root, info, **kwargs):
         return root.get("STATUS", "")
 
+    def resolve_meta(root, info, **kwargs):
+        return root.get("X-META", {})
+
 
 class CalendarFeedType(ObjectType):
     events = graphene.List(

aleksis/core/util/core_helpers.py

+import json
 import os
 from datetime import datetime, timedelta
 from importlib import import_module, metadata
@@ -498,6 +499,7 @@ feedgenerator.FEED_FIELD_MAP = feedgenerator.FEED_FIELD_MAP + (("color", "color"
 feedgenerator.ITEM_ELEMENT_FIELD_MAP = feedgenerator.ITEM_ELEMENT_FIELD_MAP + (
     ("color", "color"),
     ("recurrence_id", "recurrence-id"),
+    ("meta", "x-meta"),
 )
 
 
@@ -507,7 +509,7 @@ class ExtendedICal20Feed(feedgenerator.ICal20Feed):
     Adds a method to return the actual calendar object.
     """
 
-    def get_calendar_object(self):
+    def get_calendar_object(self, with_meta=True):
         cal = Calendar()
         cal.add("version", "2.0")
         cal.add("calscale", "GREGORIAN")
@@ -517,28 +519,19 @@ class ExtendedICal20Feed(feedgenerator.ICal20Feed):
             if val is not None:
                 cal.add(efield, val)
 
-        self.write_items(cal)
+        self.write_items(cal, with_meta=with_meta)
 
         return cal
 
     def write(self, outfile, encoding):
-        cal = Calendar()
-        cal.add("version", "2.0")
-        cal.add("calscale", "GREGORIAN")
-
-        for ifield, efield in feedgenerator.ITEM_ELEMENT_FIELD_MAP:
-            val = self.feed.get(ifield)
-            if val is not None:
-                cal.add(efield, val)
-
-        self.write_items(cal)
+        cal = self.get_calendar_object(with_meta=False)
 
         to_ical = getattr(cal, "as_string", None)
         if not to_ical:
             to_ical = cal.to_ical
         outfile.write(to_ical())
 
-    def write_items(self, calendar):
+    def write_items(self, calendar, with_meta=True):
         for item in self.items:
             component_type = item.get("component_type")
             if component_type == "todo":
@@ -554,6 +547,9 @@ class ExtendedICal20Feed(feedgenerator.ICal20Feed):
                     elif ifield == "valarm":
                         for list_item in val:
                             element.add_component(list_item)
+                    elif ifield == "meta":
+                        if with_meta:
+                            element.add(efield, json.dumps(val))
                     else:
                         element.add(efield, val)
             calendar.add_component(element)