From b356699c9b61d72d9a5fd3db86d525482ddf47d9 Mon Sep 17 00:00:00 2001
From: Raymond Yee <raymond.yee@gmail.com>
Date: Wed, 25 Jun 2014 18:05:57 -0700
Subject: [PATCH] First pass at /opds/{facet} --> now with active_campaigns too

---
 core/opds.py         | 40 +++++++++++++++++++++--------
 frontend/urls.py     |  2 +-
 frontend/views.py    | 13 +++++++++-
 notebooks/opds.ipynb | 61 ++++++++++++++++++++++++++++++++++++--------
 4 files changed, 92 insertions(+), 24 deletions(-)

diff --git a/core/opds.py b/core/opds.py
index 5e2c2be0..1dd20705 100644
--- a/core/opds.py
+++ b/core/opds.py
@@ -32,7 +32,9 @@ def map_to_domain(url, domain="unglue.it", protocol="https"):
     return urlparse.urlunparse(m)
 
 def add_query_component(url, qc):
-    """ """
+    """
+    add component qc to the querystring of url
+    """
     m = list(urlparse.urlparse(url))
     if len(m[4]):
         m[4] = "&".join([m[4],qc])
@@ -107,7 +109,26 @@ def work_node(work, domain="unglue.it", protocol="https"):
             
     return node
 
-def creativecommons(domain="unglue.it", protocol="https"):
+def creative_commons(domain="unglue.it", protocol="https"):
+
+    licenses = cc.LICENSE_LIST
+    ccworks = models.Work.objects.filter(editions__ebooks__isnull=False, 
+                        editions__ebooks__rights__in=licenses).distinct().order_by('-created')
+    
+    return opds_feed_for_works(ccworks, "creative_commons", "Unglue.it Catalog:  Creative Commons Books",
+                               domain, protocol)
+
+def active_campaigns(domain="unglue.it", protocol="https"):
+    """
+    return opds feed for works associated with active campaigns
+    """
+    # campaigns = models.Campaign.objects.filter(status='ACTIVE').order_by('deadline')
+    campaign_works = models.Work.objects.filter(campaigns__status='ACTIVE')
+    return opds_feed_for_works(campaign_works, "active_campaigns",
+                               "Unglue.it Catalog:  Books under Active Campaign",
+                               domain, protocol)
+
+def opds_feed_for_works(works, feed_path, title="Unglue.it Catalog", domain="unglue.it", protocol="https"):
 
     feed_xml = """<feed xmlns:dcterms="http://purl.org/dc/terms/" 
       xmlns:opds="http://opds-spec.org/"
@@ -121,12 +142,13 @@ def creativecommons(domain="unglue.it", protocol="https"):
     # add title
     # TO DO: will need to calculate the number items and where in the feed we are
     
-    feed.append(text_node('title', "Unglue.it Catalog: crawlable feed"))
+    feed.append(text_node('title', title))
     
     # id 
     
-    feed.append(text_node('id', "{protocol}://{domain}/opds/creativecommons.xml".format(protocol=protocol,
-                                                                                             domain=domain)))
+    feed.append(text_node('id', "{protocol}://{domain}/opds/{feed_path}".format(protocol=protocol,
+                                                                                domain=domain,
+                                                                                feed_path=feed_path)))
     
     # updated
     # TO DO:  fix time zone?
@@ -153,13 +175,9 @@ def creativecommons(domain="unglue.it", protocol="https"):
      "type":"application/atom+xml;profile=opds-catalog;kind=navigation",
     })
     feed.append(start_link)
+
     
-    licenses = cc.LICENSE_LIST
-    
-    ccworks = models.Work.objects.filter(editions__ebooks__isnull=False, 
-                        editions__ebooks__rights__in=licenses).distinct().order_by('-created')
-    
-    for work in islice(ccworks,None):
+    for work in islice(works,None):
         node = work_node(work, domain=domain, protocol=protocol)
         feed.append(node)
     
diff --git a/frontend/urls.py b/frontend/urls.py
index e9c9763b..b8093782 100644
--- a/frontend/urls.py
+++ b/frontend/urls.py
@@ -156,7 +156,7 @@ urlpatterns = patterns(
     url(r"^marc/concatenate/$", "marc_concatenate", name="marc_concatenate"),
     url(r"^accounts/edit/marc_config/$", login_required(MARCConfigView.as_view()),  name="marc_config"),
     url(r"^opds/$", OPDSNavigationView.as_view(template_name="opds.xml"), name="opds"),
-    url(r"^opds/creativecommons.xml/$", OPDSAcquisitionView.as_view(), name="opds_cc")
+    url(r"^opds/(?P<facet>[^/]+)/$", OPDSAcquisitionView.as_view(), name="opds_acqusition")
 )
 
 if settings.DEBUG:
diff --git a/frontend/views.py b/frontend/views.py
index 5034871a..3e6df0d9 100755
--- a/frontend/views.py
+++ b/frontend/views.py
@@ -3195,5 +3195,16 @@ class OPDSAcquisitionView(View):
         else:
             protocol = "https"
             
-        return HttpResponse(opds.creativecommons(domain=site.domain, protocol=protocol),
+        logger.info("request.path: {0}".format(request.path))
+        logger.info("facet: {0}".format(kwargs.get('facet')))
+            
+        facet = kwargs.get('facet')
+        if facet == 'creative_commons':
+            return HttpResponse(opds.creative_commons(domain=site.domain, protocol=protocol),
                             content_type="application/atom+xml;profile=opds-catalog;kind=acquisition")
+        elif facet == 'active_campaigns':
+            return HttpResponse(opds.active_campaigns(domain=site.domain, protocol=protocol),
+                            content_type="application/atom+xml;profile=opds-catalog;kind=acquisition")
+        else:
+            return HttpResponseNotFound("invalid facet")
+            
diff --git a/notebooks/opds.ipynb b/notebooks/opds.ipynb
index 4c649369..fa52d4f7 100644
--- a/notebooks/opds.ipynb
+++ b/notebooks/opds.ipynb
@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:6bd6c988240f3f5084034a9aca36b1e1f5de3799a7b1a46c9624e8de724010f2"
+  "signature": "sha256:9c22749755ac63be304b4d1975df24fa2f5ae6afb32dd56374a060df17645c96"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -657,16 +657,6 @@
       "Tacking on a query component to a URL"
      ]
     },
-    {
-     "cell_type": "code",
-     "collapsed": false,
-     "input": [
-      "urlli"
-     ],
-     "language": "python",
-     "metadata": {},
-     "outputs": []
-    },
     {
      "cell_type": "code",
      "collapsed": false,
@@ -697,6 +687,55 @@
      ],
      "prompt_number": 30
     },
+    {
+     "cell_type": "heading",
+     "level": 1,
+     "metadata": {},
+     "source": [
+      "Getting works of active campaigns "
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "campaigns = models.Campaign.objects.filter(status='ACTIVE').order_by('deadline')\n",
+      "campaigns"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 32,
+       "text": [
+        "[<Campaign: Campaign for Lagos__2060>, <Campaign: Campaign for Dave on Earth>, <Campaign: Campaign for Green Comet>, <Campaign: Campaign for 23rd Century Romance>, <Campaign: Campaign for Moebius Noodles>, <Campaign: Campaign for The Digital Public Domain: Foundations for an Open Culture>, <Campaign: Campaign for The Classic Short Story, 1870-1925: Theory of a Genre>, <Campaign: Campaign for Acts of the Apostles>, <Campaign: Campaign for The Pains>, <Campaign: Campaign for Cheap Complex Devices>, <Campaign: Campaign for Biodigital>, <Campaign: Campaign for Contact With Shadow>]"
+       ]
+      }
+     ],
+     "prompt_number": 32
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "models.Work.objects.filter(campaigns__status='ACTIVE')"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 34,
+       "text": [
+        "[<Work: 23rd Century Romance>, <Work: Acts of the Apostles>, <Work: Biodigital>, <Work: Cheap Complex Devices>, <Work: Contact With Shadow>, <Work: Dave on Earth>, <Work: Green Comet>, <Work: Lagos__2060>, <Work: Moebius Noodles>, <Work: The Classic Short Story, 1870-1925: Theory of a Genre>, <Work: The Digital Public Domain: Foundations for an Open Culture>, <Work: The Pains>]"
+       ]
+      }
+     ],
+     "prompt_number": 34
+    },
     {
      "cell_type": "heading",
      "level": 1,