From f4c1f5b912f6db2acda33aca295bcaf457c09474 Mon Sep 17 00:00:00 2001
From: "Guewen Baconnier @ Camptocamp" <guewen.baconnier@camptocamp.com>
Date: Mon, 10 Dec 2012 12:14:01 +0100
Subject: [PATCH] [FIX] pingen: convert datetimes to UTC before storing them

---
 pingen/pingen.py          | 19 +++++++++++++++++++
 pingen/pingen_document.py | 14 ++++++++++----
 2 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/pingen/pingen.py b/pingen/pingen.py
index b460618..ecb8c2e 100644
--- a/pingen/pingen.py
+++ b/pingen/pingen.py
@@ -23,7 +23,9 @@ import requests
 import logging
 import urlparse
 import json
+import pytz
 
+from datetime import datetime
 from requests.packages.urllib3.filepost import encode_multipart_formdata
 
 _logger = logging.getLogger(__name__)
@@ -37,6 +39,23 @@ POST_SENDING_STATUS = {
     400: 'Sending cancelled',
 }
 
+DATETIME_FORMAT = '%Y-%m-%d %H:%M:%S'  # this is the format used by pingen API
+
+TZ = pytz.timezone('Europe/Zurich')  # this is the timezone of the pingen API
+
+
+def pingen_datetime_to_utc(dt):
+    """ Convert a date/time used by pingen.com to UTC timezone
+
+    :param dt: pingen date/time as string (as received from the API)
+               to convert to UTC
+    :return: datetime in the UTC timezone
+    """
+    utc = pytz.utc
+    dt = datetime.strptime(dt, DATETIME_FORMAT)
+    localized_dt = TZ.localize(dt, is_dst=True)
+    return localized_dt.astimezone(utc)
+
 
 class PingenException(RuntimeError):
     """There was an ambiguous exception that occurred while handling your
diff --git a/pingen/pingen_document.py b/pingen/pingen_document.py
index 522b2c2..b613327 100644
--- a/pingen/pingen_document.py
+++ b/pingen/pingen_document.py
@@ -26,8 +26,9 @@ from cStringIO import StringIO
 from contextlib import closing
 from openerp.osv import osv, orm, fields
 from openerp.tools.translate import _
-from openerp import pooler
-from .pingen import APIError, ConnectionError, POST_SENDING_STATUS
+from openerp import pooler, tools
+from .pingen import APIError, ConnectionError, POST_SENDING_STATUS, \
+        pingen_datetime_to_utc
 
 _logger = logging.getLogger(__name__)
 
@@ -135,10 +136,12 @@ class pingen_document(orm.Model):
             state = 'pingen_error'
             error = _('The document does not meet the Pingen requirements.')
 
+        push_date = pingen_datetime_to_utc(infos['date'])
+
         document.write(
             {'last_error_message': error,
              'state': state,
-             'push_date': infos['date'],
+             'push_date': push_date.strftime(tools.DEFAULT_SERVER_DATETIME_FORMAT),
              'pingen_id': doc_id,
              'post_id': post_id},
             context=context)
@@ -336,13 +339,16 @@ class pingen_document(orm.Model):
                 cr, uid, [('name', '=', post_infos['currency'])], context=context)
         country_ids = self.pool.get('res.country').search(
                 cr, uid, [('code', '=', post_infos['country'])], context=context)
+
+        send_date = pingen_datetime_to_utc(infos['date'])
+
         vals = {
             'post_status': POST_SENDING_STATUS[post_infos['status']],
             'cost': post_infos['cost'],
             'currency_id': currency_ids[0] if currency_ids else False,
             'parsed_address': post_infos['address'],
             'country_id': country_ids[0] if country_ids else False,
-            'send_date': post_infos['date'],
+            'send_date': send_date.strftime(tools.DEFAULT_SERVER_DATETIME_FORMAT),
             'pages': post_infos['pages'],
             'last_error_message': False,
             }