From 1fef9eeef9e3796f6819ece99b4c14a428776173 Mon Sep 17 00:00:00 2001
From: SebF <sebastien@forissier.eu>
Date: Sat, 4 May 2024 15:47:39 +0200
Subject: [PATCH] export single event

---
 src/agenda_culturel/models.py | 40 +++++++++++++++++++++++++++++++++++
 src/agenda_culturel/views.py  | 15 +++++++++----
 2 files changed, 51 insertions(+), 4 deletions(-)

diff --git a/src/agenda_culturel/models.py b/src/agenda_culturel/models.py
index e7dfc7f..b1c9a32 100644
--- a/src/agenda_culturel/models.py
+++ b/src/agenda_culturel/models.py
@@ -26,6 +26,8 @@ from django.utils import timezone
 from location_field.models.plain import PlainLocationField
 
 from .calendar import CalendarList, CalendarDay
+from icalendar import Calendar as icalCal
+from icalendar import Event as icalEvent
 
 import logging
 
@@ -1090,6 +1092,44 @@ class Event(models.Model):
 
         return (dtstart <= e_dtstart <= dtend) or (e_dtstart <= dtstart <= e_dtend)
 
+    def export_to_ics(events):
+        cal = icalCal()
+        # Some properties are required to be compliant
+        cal.add("prodid", "-//My calendar product//example.com//")
+        cal.add("version", "2.0")
+
+        for event in events:
+            eventIcal = icalEvent()
+            # mapping
+            eventIcal.add(
+                "dtstart",
+                datetime(
+                    event.start_day.year,
+                    event.start_day.month,
+                    event.start_day.day,
+                    event.start_time.hour,
+                    event.start_time.minute,
+                ),
+            )
+            eventIcal.add(
+                "dtend",
+                datetime(
+                    event.end_day.year,
+                    event.end_day.month,
+                    event.end_day.day,
+                    event.end_time.hour,
+                    event.end_time.minute,
+                ),
+            )
+            eventIcal.add("summary", event.title)
+            eventIcal.add("name", event.title)
+            eventIcal.add("description", event.description + "\r" + event.reference_urls[0]) 
+            eventIcal.add("location", event.exact_location or event.location)
+
+            cal.add_component(eventIcal)
+
+        return cal
+
 
 class ContactMessage(models.Model):
     class Meta:
diff --git a/src/agenda_culturel/views.py b/src/agenda_culturel/views.py
index ef3c06a..96457b6 100644
--- a/src/agenda_culturel/views.py
+++ b/src/agenda_culturel/views.py
@@ -10,7 +10,7 @@ from django.http import QueryDict
 from django import forms
 from django.contrib.postgres.search import SearchQuery, SearchHeadline
 
-from django.http import HttpResponseRedirect
+from django.http import HttpResponseRedirect, HttpResponse, HttpResponseNotFound, FileResponse
 from django.urls import reverse
 from collections import Counter
 
@@ -600,10 +600,17 @@ def import_from_url(request):
 
 def export_event_ical(request, pk):
     event = get_object_or_404(Event, pk=pk)
-    logger = logging.getLogger(__name__)
-    logger.info("titre event" + event.title)
 
-    return HttpResponse(event.title + ".ical", content_type="text/calendar")
+    events = list()
+    events.append(event)
+
+    cal = Event.export_to_ics(events)
+
+    return FileResponse(
+        cal.to_ical().decode("utf-8").replace("\r\n", "\n"),
+        as_attachment=True, 
+        filename= event.title + ".ics", 
+        content_type="text/calendar")
 
 
 class EventFilterAdmin(django_filters.FilterSet):