From 33aff43ff6e9cec882ffecc11bf761798a06f274 Mon Sep 17 00:00:00 2001
From: Henrik Levkowetz <henrik@levkowetz.com>
Date: Wed, 27 Jan 2016 14:27:12 +0000
Subject: [PATCH] Added a tiny script to disambiguate document timestamps.  -
 Legacy-Id: 10752

---
 ietf/bin/fix-ambiguous-document-timestamps | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100755 ietf/bin/fix-ambiguous-document-timestamps

diff --git a/ietf/bin/fix-ambiguous-document-timestamps b/ietf/bin/fix-ambiguous-document-timestamps
new file mode 100755
index 000000000..1a683c5a6
--- /dev/null
+++ b/ietf/bin/fix-ambiguous-document-timestamps
@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+# -*- Python -*-
+
+"""
+This script looks at document timestamps going back one year, and if it finds
+ambiguous timestamps, shifts them backwards one hour in order to disambiguate
+them.
+"""
+
+import os, sys
+import datetime
+import pytz
+
+filename = os.path.abspath(__file__)
+basedir = os.path.abspath(os.path.join(os.path.dirname(__file__), "../.."))
+sys.path = [ basedir ] + sys.path
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "ietf.settings")
+
+import django
+django.setup()
+
+from django.conf import settings
+from ietf.doc.models import Document
+
+now = datetime.datetime.now()
+then = now - datetime.timedelta(days=365)
+
+for d in Document.objects.filter(time__gt=then).order_by('-time'):
+    tz = pytz.timezone(settings.TIME_ZONE)
+    try:
+        t = tz.localize(d.time, is_dst=None)
+    except pytz.AmbiguousTimeError as e:
+        orig = d.time
+        d.time = d.time - datetime.timedelta(minutes=60)
+        print "%s: changed %s --> %s" % (d.name, orig, d.time)
+        d.save()