From c2990dbe46c22cabd9a33b33e678640ea1c78775 Mon Sep 17 00:00:00 2001
From: Roman P <pythonpro@gmail.com>
Date: Thu, 11 Jul 2019 16:55:21 +0400
Subject: [PATCH] Refactor DeviceCertView

Closes #267
---
 backend/device_registry/api_views.py            | 17 ++++-------------
 backend/device_registry/models.py               |  7 -------
 .../templates/device_info_security.html         |  4 ++--
 backend/device_registry/tests/test_api.py       |  7 -------
 backend/device_registry/urls.py                 |  2 ++
 5 files changed, 8 insertions(+), 29 deletions(-)

diff --git a/backend/device_registry/api_views.py b/backend/device_registry/api_views.py
index cb21a7577..1b67a8ff3 100644
--- a/backend/device_registry/api_views.py
+++ b/backend/device_registry/api_views.py
@@ -136,7 +136,7 @@ def post(self, request, *args, **kwargs):
 
 class DeviceCertView(APIView):
     """
-    Returns a device certificate from the database.
+    Return a device certificate from the database.
     """
     permission_classes = [AllowAny]
 
@@ -146,18 +146,9 @@ def get(self, request, *args, **kwargs):
         except ObjectDoesNotExist:
             return Response('Device not found', status=status.HTTP_404_NOT_FOUND)
 
-        if 'format' in request.GET:
-            return Response({
-                'certificate': device.certificate,
-                'certificate_expires': device.certificate_expires,
-                'is_expired':
-                    device.certificate_expires < timezone.now() if device.certificate_expires is not None else False,
-                'device_id': device.device_id,
-            })
-        else:
-            response = HttpResponse(device.certificate, content_type='application/x-pem-file')
-            response['Content-Disposition'] = 'attachment; filename={}.crt'.format(device.device_id)
-            return response
+        response = HttpResponse(device.certificate, content_type='application/x-pem-file')
+        response['Content-Disposition'] = 'attachment; filename={}.crt'.format(device.device_id)
+        return response
 
 
 class DeviceIDView(APIView):
diff --git a/backend/device_registry/models.py b/backend/device_registry/models.py
index aa5397363..c7745a861 100644
--- a/backend/device_registry/models.py
+++ b/backend/device_registry/models.py
@@ -112,13 +112,6 @@ def get_cert_expiration_date(self):
         except ValueError:
             pass
 
-    def get_cert_url(self):
-        if settings.IS_DEV:
-            cert_url = f'http://localhost:8001/api/v0.2/device-cert/{self.device_id}'
-        else:
-            cert_url = f'https://api.wott.io/v0.2/device-cert/{self.device_id}'
-        return cert_url
-
     @property
     def actions_count(self):
         if self.firewallstate.policy == FirewallState.POLICY_ENABLED_ALLOW:
diff --git a/backend/device_registry/templates/device_info_security.html b/backend/device_registry/templates/device_info_security.html
index 1717bb339..704aa64cc 100644
--- a/backend/device_registry/templates/device_info_security.html
+++ b/backend/device_registry/templates/device_info_security.html
@@ -207,11 +207,11 @@ <h4 class="tab-title">Security</h4>
                   {% endif %}
                 </td>
               </tr>
-              {% if  not is_expired %}
+              {% if not is_expired %}
                 <tr>
                   <th scope="row">Download Certificate</th>
                   <td>
-                    <a href="{{ object.get_cert_url }}">{{ object.device_id }}.crt</a>
+                    <a href="{% url 'download_device_cert' object.device_id %}">{{ object.device_id }}.crt</a>
                   </td>
                 </tr>
                 <tr>
diff --git a/backend/device_registry/tests/test_api.py b/backend/device_registry/tests/test_api.py
index 3e0385e4f..50622affe 100644
--- a/backend/device_registry/tests/test_api.py
+++ b/backend/device_registry/tests/test_api.py
@@ -59,13 +59,6 @@ def test_simple_get(self):
         self.assertIsInstance(response.content, bytes)
         self.assertEqual(response.content, TEST_CERT.encode('utf8'))
 
-    def test_get_with_format(self):
-        response = self.client.get(self.url + '?format')
-        self.assertEqual(response.status_code, status.HTTP_200_OK)
-        self.assertIsInstance(response.data, dict)
-        self.assertDictEqual(response.data, {'certificate': TEST_CERT, 'certificate_expires': self.expires,
-                                             'is_expired': False, 'device_id': self.device.device_id})
-
 
 class DeviceIDViewTest(APITestCase):
     def setUp(self):
diff --git a/backend/device_registry/urls.py b/backend/device_registry/urls.py
index 1e01871e9..c2d908545 100644
--- a/backend/device_registry/urls.py
+++ b/backend/device_registry/urls.py
@@ -104,4 +104,6 @@
              api_views.autocomplete_tags,
              name='ajax-tags-autocomplete',
         ),
+        path('devices/device-cert/<str:device_id>/'.format(api_version), api_views.DeviceCertView.as_view(),
+             name='download_device_cert'),
     ]