dashboard: display renew url in email notifications

circle/dashboard/models.py

@@ -17,6 +17,7 @@
 
 from __future__ import absolute_import
 
+from datetime import timedelta
 from itertools import chain
 from hashlib import md5
 from logging import getLogger
@@ -31,6 +32,7 @@ from django.db.models import (
 )
 from django.db.models.signals import post_save, pre_delete, post_delete
 from django.templatetags.static import static
+from django.utils import timezone
 from django.utils.html import escape
 from django.utils.translation import ugettext_lazy as _
 from django_sshkey.models import UserKey
@@ -132,6 +134,17 @@ class Notification(TimeStampedModel):
     def message(self, value):
         self.message_data = None if value is None else value.to_dict()
 
+    @property
+    def has_valid_renew_url(self):
+        params = self.message_data['params']
+        return ('token' in params and 'suspend' in params and
+                self.modified > timezone.now() - timedelta(days=3))
+
+    @property
+    def renew_url(self):
+        return (settings.DJANGO_URL.rstrip("/") +
+                str(self.message_data['params'].get('token')))
+
 
 class ConnectCommand(Model):
     user = ForeignKey(User, related_name='command_set')

circle/dashboard/templates/dashboard/notifications/email.txt

@@ -4,7 +4,9 @@
 
 {% blocktrans count n=messages|length %}You have a new notification:{% plural %}You have {{n}} new notifications:{% endblocktrans %}
 
-{% for msg in messages %} * {{msg.subject}}
+{% for msg in messages %} * {{msg.subject}}{% if msg.has_valid_renew_url %}
+   {% trans "You can renew it without logging in:" %}
+   {{ msg.renew_url }}{% endif %}
 {% endfor %}
 
 {% blocktrans with url=url count n=messages|length %}See it in detail on <{{url}}>.{% plural %} See them in detail on <{{url}}>.{% endblocktrans %}