From a84fe846fed489078af45636adbafe022af238b3 Mon Sep 17 00:00:00 2001
From: Daniel Grams <grams.daniel@gmail.com>
Date: Sun, 2 Apr 2023 14:11:20 +0200
Subject: [PATCH 1/2] Bugfix iCalendar Recurrency Rule #400

---
 project/services/event.py                | 28 +++++++++++++++++++-----
 project/static/vue/organizer/read.vue.js |  2 +-
 tests/services/test_event.py             |  5 ++++-
 3 files changed, 28 insertions(+), 7 deletions(-)

diff --git a/project/services/event.py b/project/services/event.py
index a47b61f..8f5143f 100644
--- a/project/services/event.py
+++ b/project/services/event.py
@@ -5,6 +5,7 @@ import icalendar
 from dateutil.relativedelta import relativedelta
 from flask import url_for
 from flask_babelex import format_date, format_time, gettext
+from icalendar.prop import vDDDLists
 from sqlalchemy import and_, case, func, or_
 from sqlalchemy.orm import aliased, contains_eager, defaultload, joinedload, lazyload
 from sqlalchemy.sql import extract
@@ -530,9 +531,23 @@ def populate_ical_event_with_datish(
         ical_event.add("dtstart", start)
 
     if recurrence_rule:
-        ical_event.add(
-            "rrule", icalendar.vRecur.from_ical(recurrence_rule.replace("RRULE:", ""))
-        )
+        recc_lines = recurrence_rule.splitlines()
+
+        for recc_line in recc_lines:
+            recc_line_parts = recc_line.split(":", 1)
+
+            if len(recc_line_parts) != 2:
+                continue
+
+            recc_key, recc_value = recc_line_parts
+            recc_key_lower = recc_key.lower()
+
+            if recc_key_lower == "rrule":
+                ical_event.add("rrule", icalendar.vRecur.from_ical(recc_value))
+            elif recc_key_lower == "exdate":
+                ical_event.add("exdate", vDDDLists.from_ical(recc_value))
+            elif recc_key_lower == "rdate":
+                ical_event.add("rdate", vDDDLists.from_ical(recc_value))
 
     if datish.end and datish.end > datish.start:
         end = datish.end.astimezone(berlin_tz)
@@ -576,8 +591,11 @@ def create_ical_events_for_event(event: Event) -> list:  # list[icalendar.Event]
     result = list()
 
     for date_definition in event.date_definitions:
-        ical_event = create_ical_event_for_date_definition(date_definition)
-        result.append(ical_event)
+        try:
+            ical_event = create_ical_event_for_date_definition(date_definition)
+            result.append(ical_event)
+        except Exception as e:  # pragma: no cover
+            app.logger.exception(e)
 
     return result
 
diff --git a/project/static/vue/organizer/read.vue.js b/project/static/vue/organizer/read.vue.js
index 9a10107..05d8e88 100644
--- a/project/static/vue/organizer/read.vue.js
+++ b/project/static/vue/organizer/read.vue.js
@@ -43,7 +43,7 @@ const OrganizerRead = {
               </div>
 
               <b-list-group class="mt-4">
-                <b-list-group-item :href="'/eventdates?organizer_id=' + organizer.organization.id">
+                <b-list-group-item :href="'/eventdates?organizer_id=' + organizer.id">
                   <i class="fa fa-fw fa-list"></i>
                   {{ $t("shared.models.event.listName") }}
                 </b-list-group-item>
diff --git a/tests/services/test_event.py b/tests/services/test_event.py
index 533a53b..18f8865 100644
--- a/tests/services/test_event.py
+++ b/tests/services/test_event.py
@@ -273,7 +273,10 @@ def test_get_events_fulltext(
 
 def test_create_ical_events_for_event(client, app, db, utils, seeder):
     user_id, admin_unit_id = seeder.setup_base()
-    event_id = seeder.create_event(admin_unit_id)
+    event_id = seeder.create_event(
+        admin_unit_id,
+        recurrence_rule="RRULE:FREQ=DAILY;COUNT=10\nEXDATE:20300102T000000,20300104T000000\nRDATE:20300103T000000,20300105T000000",
+    )
 
     with app.app_context():
         from project.models import Event, EventStatus, Location

From 3bf7ffdf1d4f36ae7dc260e809586d16715b1bfe Mon Sep 17 00:00:00 2001
From: Daniel Grams <grams.daniel@gmail.com>
Date: Sun, 2 Apr 2023 14:27:09 +0200
Subject: [PATCH 2/2] Bugfix iCalendar Recurrency Rule #400

---
 project/services/event.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/project/services/event.py b/project/services/event.py
index 8f5143f..9854a8f 100644
--- a/project/services/event.py
+++ b/project/services/event.py
@@ -536,7 +536,7 @@ def populate_ical_event_with_datish(
         for recc_line in recc_lines:
             recc_line_parts = recc_line.split(":", 1)
 
-            if len(recc_line_parts) != 2:
+            if len(recc_line_parts) != 2:  # pragma: no cover
                 continue
 
             recc_key, recc_value = recc_line_parts