From 5fd334f7fa27452d2f35a9f037a40a1452e547b3 Mon Sep 17 00:00:00 2001
From: joseph <joseph@daguin.net>
Date: Sat, 20 Apr 2024 11:43:14 +0200
Subject: [PATCH] respect RFC 5545 for ics export

---
 colloscope/icalexport.py | 43 ++++++++++++++++++++++++++++++++++------
 1 file changed, 37 insertions(+), 6 deletions(-)

diff --git a/colloscope/icalexport.py b/colloscope/icalexport.py
index 355b116..ed85083 100644
--- a/colloscope/icalexport.py
+++ b/colloscope/icalexport.py
@@ -1,16 +1,41 @@
 from datetime import date, time, datetime, timedelta
 from pytz import timezone
+from uuid import uuid4
 
 from icalendar import Calendar, Event, vCalAddress, vText
 
 from colloscope.models import *
 
+LOCAL_TZ = "Europe/Paris"
+
 
 def to_calendar(etudiant, periode):
     cal = Calendar()
 
     cal.add("prodid", "-//Colloscope//colles.mp2i-vms.fr//")
     cal.add("version", "2.0")
+    cal.add(
+        """
+            BEGIN:VTIMEZONE
+            TZID:Europe/Paris
+            X-LIC-LOCATION:Europe/Paris
+            BEGIN:DAYLIGHT
+            TZOFFSETFROM:+0100
+            TZOFFSETTO:+0200
+            TZNAME:CEST
+            DTSTART:19700329T020000
+            RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
+            END:DAYLIGHT
+            BEGIN:STANDARD
+            TZOFFSETFROM:+0200
+            TZOFFSETTO:+0100
+            TZNAME:CET
+            DTSTART:19701025T030000
+            RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
+            END:STANDARD
+            END:VTIMEZONE
+            """
+    )
 
     rotations = Rotation.objects \
             .filter(groupes__membres=etudiant) \
@@ -20,19 +45,25 @@ def to_calendar(etudiant, periode):
 
     for rotation in rotations:
         event = Event()
-        event.add("name", "Colle")
-        event.add("summary", str(rotation))
+
+        summary = f"Colle {rotation.creneau.matiere} ({rotation.creneau.colleur})"
+        event.add("summary", summary)
         
         start = rotation.datetime()
         fin = start + rotation.creneau.duree
 
-        event.add("dtstart", start)
-        event.add("dtend", fin)
+        event.add("dtstart", start, parameters={"tzid": LOCAL_TZ})
+        event.add("dtend", fin, parameters={"tzid": LOCAL_TZ})
         event.add("dtstamp", datetime.now())
+        event.add("uid", str(uuid4()))
+        
 
         event.add("location", f"{rotation.creneau.salle} ({rotation.creneau.periode.classe.lycee})")
-        event.add("matiere", str(rotation.creneau.matiere))
+        event.add("categories", "COLLE-" + str(rotation.creneau.matiere))
 
+        description = "Groupes: {','.join(str(groupe) for groupe in rotation.groupes.all())}"
+        event.add(description)
+        
         organizer = vCalAddress("mailto:unknown@mp2i-vms.fr")
         organizer.params["cn"] = vText(str(rotation.creneau.colleur))
         organizer.params["role"] = vText("Colleur")
@@ -40,8 +71,8 @@ def to_calendar(etudiant, periode):
 
         for e in rotation.groupe_effectif():
             attendee = vCalAddress("mailto:unknown@mp2i-vms.fr")
-            attendee.params["cn"] = vText(str(e))
             attendee.params["role"] = vText("Etudiant")
+            attendee.params["cn"] = vText(str(e))
 
             event.add("attendee", attendee, encode=0)