[FIX] calendar,google_calendar: exclusions not propagating

Activate Google Synchronization, create on GC a recurrent event,
synchronize OE, then delete an event of the recursion on GC, sync again
on OE.

The event will be deleted from GC but not from OE after sync.

The exclusion on OE is not correctly working in that particular case,
fixing require also to "suppress" the attendee to avoid that just
created exclusions would be detected as changes to send in a following
synchronization.

closes odoo/odoo#37884

closes odoo/odoo#39510

Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>
Signed-off-by: Nicolas Martinelli (nim) <nim@odoo.com>

addons/calendar/models/calendar.py

@@ -1033,6 +1033,9 @@ class Meeting(models.Model):
                     'event_id': meeting.id,
                 }
 
+                if self._context.get('google_internal_event_id', False):
+                    values['google_internal_event_id'] = self._context.get('google_internal_event_id')
+
                 # current user don't have to accept his own meeting
                 if partner == self.env.user.partner_id:
                     values['state'] = 'accepted'

addons/google_calendar/models/calendar.py

@@ -20,7 +20,10 @@ class Meeting(models.Model):
     def write(self, values):
         sync_fields = set(self.get_fields_need_update_google())
         if (set(values) and sync_fields) and 'oe_update_date' not in values and 'NewMeeting' not in self._context:
-            values['oe_update_date'] = fields.Datetime.now()
+            if 'oe_update_date' in self._context:
+                values['oe_update_date'] = self._context.get('oe_update_date')
+            else:
+                values['oe_update_date'] = fields.Datetime.now()
         return super(Meeting, self).write(values)
 
     @api.returns('self', lambda value: value.id)

addons/google_calendar/models/google_calendar.py

@@ -850,6 +850,14 @@ class GoogleCalendar(models.AbstractModel):
                             parent_oe_id = event_to_synchronize[base_event][0][1].OE.event_id
                             if parent_oe_id:
                                 CalendarEvent.browse("%s-%s" % (parent_oe_id, new_google_event_id)).with_context(curr_attendee=event.OE.attendee_id).unlink(can_be_deleted=True)
+                            else:
+                                main_att = CalendarAttendee.with_context(context_novirtual).search([('partner_id', '=', my_partner_id), ('google_internal_event_id', '=', event.GG.event['id'].rsplit('_', 1)[0])], limit=1)
+                                if main_att:
+                                    excluded_event_id = str(main_att.event_id.id) + '-' + new_google_event_id
+
+                                    CalendarEvent.browse(excluded_event_id).with_context(google_internal_event_id=event.GG.event.get('id'), oe_update_date=False).unlink(can_be_deleted=False)
+                                else:
+                                    _logger.warning("Could not create the correct exclusion for event")
 
                 elif isinstance(actToDo, Delete):
                     if actSrc == 'GG':