From 295f8cbd261cf588f1f5f8eb2b0d82b1ae9c1fe0 Mon Sep 17 00:00:00 2001
From: Alban Gruin
Date: Thu, 5 Oct 2017 09:35:14 +0200
Subject: On ne supprime pas les cours qui commencent avant le début du
 traitement

---
 management/commands/_private.py   | 13 +++++++++----
 management/commands/timetables.py |  9 +++++----
 2 files changed, 14 insertions(+), 8 deletions(-)

diff --git a/management/commands/_private.py b/management/commands/_private.py
index 8f195a1..d576daf 100644
--- a/management/commands/_private.py
+++ b/management/commands/_private.py
@@ -65,9 +65,9 @@ def consolidate_groups(groups):
         if group.parent is None:
             consolidate_group(group)
 
-def delete_courses_in_week(timetable, year, week):
+def delete_courses_in_week(timetable, year, week, today):
     start, end = get_week(year, week)
-    Course.objects.filter(begin__gte=start, begin__lt=end,
+    Course.objects.filter(begin__gte=max(start, today), begin__lt=end,
                           timetable=timetable).delete()
 
 def get_from_db_or_create(cls, **kwargs):
@@ -128,7 +128,7 @@ def get_event(timetable, event, event_week):
 
     return course
 
-def get_events(timetable, soup, weeks_in_soup, year=None, week=None):
+def get_events(timetable, soup, weeks_in_soup, today, year=None, week=None):
     """Récupère tous les cours disponibles dans l’emploi du temps Celcat.
     Le traîtement se limitera à la semaine indiquée si il y en a une."""
     for event in soup.find_all("event"):
@@ -142,7 +142,12 @@ def get_events(timetable, soup, weeks_in_soup, year=None, week=None):
             year is None or week is None) and \
            event.resources.group is not None and \
            event.starttime is not None and event.endtime is not None:
-            yield get_event(timetable, event, event_week)
+            course = get_event(timetable, event, event_week)
+
+            # On ne sauvegarde le cours que si il ne
+            # commence après le moment du traitement
+            if course.begin >= today:
+                yield course
 
 def get_update_date(soup):
     # Explication de la regex
diff --git a/management/commands/timetables.py b/management/commands/timetables.py
index 76f0a7c..8b37a5d 100644
--- a/management/commands/timetables.py
+++ b/management/commands/timetables.py
@@ -27,6 +27,7 @@ from ._private import delete_courses_in_week, get_events, get_update_date, get_w
 @transaction.atomic
 def process_timetable_week(timetable, soup, weeks_in_soup, force, year=None, week=None):
     criteria = {}
+    today = timezone.make_aware(datetime.now())
     if year is not None and week is not None:
         begin, end = get_week(year, week)
         criteria["begin__gte"] = begin
@@ -42,12 +43,12 @@ def process_timetable_week(timetable, soup, weeks_in_soup, force, year=None, wee
         return
 
     if year is not None and week is not None:
-        delete_courses_in_week(timetable, year, week)
+        delete_courses_in_week(timetable, year, week, today)
     else:
-        Course.objects.filter(timetable=timetable,
-                              begin__gte=min(weeks_in_soup.values())).delete()
+        delete_from = max(min(weeks_in_soup.values()), today)
+        Course.objects.filter(timetable=timetable, begin__gte=delete_from).delete()
 
-    for course in get_events(timetable, soup, weeks_in_soup, year, week):
+    for course in get_events(timetable, soup, weeks_in_soup, today, year, week):
         course.save()
 
     timetable.last_update_date = new_update_date
-- 
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