Add csv download link to catalog list page

lms/templates/api_admin/catalogs/list.html

@@ -26,6 +26,7 @@ CatalogPreviewFactory({
     % for catalog in catalogs:
     <li>
       <a href="${reverse('api_admin:catalog-edit', args=(catalog.id,))}">${catalog.name}</a>
+      <a href="${reverse('api_admin:catalog-csv', args=(catalog.id,))}">download CSV</a>
     </li>
     % endfor
   </ul>

openedx/core/djangoapps/api_admin/urls.py

@@ -6,7 +6,7 @@ from django.contrib.auth.decorators import login_required
 
 from openedx.core.djangoapps.api_admin.decorators import api_access_enabled_or_404
 from openedx.core.djangoapps.api_admin.views import (
-    ApiRequestView, ApiRequestStatusView, ApiTosView, CatalogListView, CatalogEditView,
+    ApiRequestView, ApiRequestStatusView, ApiTosView, CatalogCSVView, CatalogListView, CatalogEditView,
     CatalogPreviewView, CatalogSearchView
 )
 
@@ -49,6 +49,15 @@ urlpatterns = (
         name='catalog-edit',
     ),
     url(
+        r'^catalogs/(?P<catalog_id>\d+)/csv$',
+        staff_member_required(
+            api_access_enabled_or_404(CatalogCSVView.as_view()),
+            login_url='dashboard',
+            redirect_field_name=None
+        ),
+        name='catalog-csv',
+    ),
+    url(
         r'^catalogs/$',
         staff_member_required(
             api_access_enabled_or_404(CatalogSearchView.as_view()),

openedx/core/djangoapps/api_admin/views.py

 """Views for API management."""
+from datetime import datetime
 import logging
 
 from django.conf import settings
 from django.contrib.sites.shortcuts import get_current_site
 from django.core.urlresolvers import reverse_lazy, reverse
+from django.http import HttpResponse
 from django.http.response import JsonResponse
 from django.shortcuts import redirect
 from django.utils.translation import ugettext as _
@@ -232,3 +234,18 @@ class CatalogPreviewView(View):
         else:
             results = {'count': 0, 'results': [], 'next': None, 'prev': None}
         return JsonResponse(results)
+
+
+class CatalogCSVView(View):
+    """View to download a CSV of catalog courses."""
+
+    def get(self, request, catalog_id):
+        """Download a CSV of course_runs in this catalog."""
+        client = course_discovery_api_client(request.user)
+        data = client.api.v1.catalogs(catalog_id).csv.get()
+
+        response = HttpResponse(data, content_type='text/csv')
+        response['Content-Disposition'] = 'attachment; filename="catalog_{id}_{date}.csv"'.format(
+            id=catalog_id, date=datetime.utcnow().strftime('%Y-%m-%d')
+        )
+        return response