--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/views/feeds.py	Mon Nov 23 15:14:29 2009 +0100
@@ -0,0 +1,88 @@
+from django.conf import settings
+from django.core.urlresolvers import reverse
+from django.http import HttpResponse, Http404, HttpResponseRedirect
+from django.shortcuts import get_object_or_404, render_to_response
+from django.template.loader import render_to_string
+from django.utils import feedgenerator
+from django.utils.translation import ugettext as _
+from django.template import RequestContext
+from django.contrib.auth.models import AnonymousUser  
+from cm.security import get_viewable_activities
+from cm.models import ApplicationConfiguration, Activity, Configuration
+import time
+from cm.exception import UnauthorizedException
+import re
+# taken from django's feedgenerator.py and changed to support multiple posts in minute
+def get_tag_uri(url, date):
+    "Creates a TagURI. See http://diveintomark.org/archives/2004/05/28/howto-atom-id"
+    tag = re.sub('^http://', '', url)
+    if date is not None:
+        tag = re.sub('/', ',%s:/' % time.mktime(date.timetuple()), tag, 1)
+    tag = re.sub('#', '/', tag)
+    return u'tag:' + tag
+
+
+def public_feed(request):
+    feed_title = _(u"%(workspace_name)s's public feed" % {'workspace_name' : ApplicationConfiguration['workspace_name']})
+    feed_description = _(u"Workspace %(workspace_name)s public activity feed") % {'workspace_name' : ApplicationConfiguration['workspace_name']}
+    request.user = AnonymousUser()
+    activitites = get_viewable_activities(request, {'view_comments' : 1, 'view_texts' : 1})
+    return _feed(request, activitites, feed_title, feed_description)
+
+def private_feed(request, key):
+    private_feed_key = Configuration.objects.get_key('private_feed_key', None)
+    if private_feed_key != key:
+        raise Http404
+
+    feed_title = _(u"%(workspace_name)s's private feed" % {'workspace_name' : ApplicationConfiguration['workspace_name']})
+    feed_description = _(u"Workspace %(workspace_name)s private feed") % {'workspace_name' : ApplicationConfiguration['workspace_name']}
+    activities = Activity.objects.filter(type__in=Activity.ACTIVITIES_TYPES).order_by('-created')
+    return _feed(request, activities, feed_title, feed_description)
+
+def _feed(request, activities, feed_title, feed_description):
+    feed = feedgenerator.Atom1Feed(
+        title=feed_title,
+        link=settings.SITE_URL,
+        description=feed_description,
+        language='en' # TODO: something better to do?
+    )    
+
+    for activity in activities:
+        item_data = activity.printable_data()
+        item_data_text = activity.printable_data(html=False, link=False)
+        item_metadata = activity.created # TODO dateformat
+        item_body = render_to_string('feed/feed_item.txt',
+                                   { 'title': item_data,
+                                     'body' : item_metadata,
+                                     }, context_instance = RequestContext(request))
+        feed.add_item(title=item_data_text,
+               link=settings.SITE_URL,
+               description=item_body,
+               pubdate=activity.created,
+               unique_id=get_tag_uri(settings.SITE_URL, activity.created),
+               author_name=activity.user.username if activity.user else '-',
+               )
+    
+    response = HttpResponse(mimetype=feed.mime_type)
+    feed.write(response, 'utf-8')
+    return response
+    
+def text_feed(request, key):
+    from cm.views import get_text_by_keys_or_404    
+    text = get_text_by_keys_or_404(key)
+    feed_title = _(u"Text %(text_title)s's public feed" % {'text_title' : text.title})
+    feed_description = _(u"Public activity feed for text %(text_title)s") % {'text_title' : text.title}
+    request.user = AnonymousUser()
+    activitites = get_viewable_activities(request, {'view_comments' : 1, 'view_texts' : 1}, text=text)
+    return _feed(request, activitites, feed_title, feed_description)
+
+def text_feed_private(request, key, private_feed_key):
+    from cm.views import get_text_by_keys_or_404    
+    text = get_text_by_keys_or_404(key)
+    if text.private_feed_key != private_feed_key:
+        raise Http404
+
+    feed_title = _(u"Text %(text_title)s's private feed" % {'text_title' : text.title})
+    feed_description = _(u"Private activity feed for text %(text_title)s") % {'text_title' : text.title}
+    activities = Activity.objects.filter(type__in=Activity.ACTIVITIES_TYPES, text=text).order_by('-created')
+    return _feed(request, activities, feed_title, feed_description)