Now return proper error payload on subsonic API

api/funkwhale_api/subsonic/renderers.py

@@ -15,6 +15,9 @@ class SubsonicJSONRenderer(renderers.JSONRenderer):
             }
         }
         final['subsonic-response'].update(data)
+        if 'error' in final:
+            # an error was returned
+            final['subsonic-response']['status'] = 'failed'
         return super().render(final, accepted_media_type, renderer_context)
 
 
@@ -31,6 +34,9 @@ class SubsonicXMLRenderer(renderers.JSONRenderer):
             'version': '1.16.0',
         }
         final.update(data)
+        if 'error' in final:
+            # an error was returned
+            final['status'] = 'failed'
         tree = dict_to_xml_tree('subsonic-response', final)
         return b'<?xml version="1.0" encoding="UTF-8"?>\n' + ET.tostring(tree, encoding='utf-8')
 

api/funkwhale_api/subsonic/views.py

@@ -31,15 +31,19 @@ def find_object(queryset, model_field='pk', field='id', cast=int):
                 raw_value = data[field]
             except KeyError:
                 return response.Response({
+                    'error': {
                         'code': 10,
                         'message': "required parameter '{}' not present".format(field)
+                    }
                 })
             try:
                 value = cast(raw_value)
             except (TypeError, ValidationError):
                 return response.Response({
+                    'error': {
                         'code': 0,
                         'message': 'For input string "{}"'.format(raw_value)
+                    }
                 })
             qs = queryset
             if hasattr(qs, '__call__'):
@@ -48,9 +52,11 @@ def find_object(queryset, model_field='pk', field='id', cast=int):
                 obj = qs.get(**{model_field: value})
             except qs.model.DoesNotExist:
                 return response.Response({
+                    'error': {
                         'code': 70,
                         'message': '{} not found'.format(
                             qs.model.__class__.__name__)
+                    }
                 })
             kwargs['obj'] = obj
             return func(self, request, *args, **kwargs)
@@ -83,11 +89,10 @@ class SubsonicViewSet(viewsets.GenericViewSet):
         payload = {
             'status': 'failed'
         }
-        try:
+        if exc.__class__ in mapping:
             code, message = mapping[exc.__class__]
-        except KeyError:
-            return super().handle_exception(exc)
         else:
+            return super().handle_exception(exc)
         payload['error'] = {
             'code': code,
             'message': message
@@ -450,8 +455,10 @@ class SubsonicViewSet(viewsets.GenericViewSet):
         name = data.get('name', '')
         if not name:
             return response.Response({
+                'error': {
                     'code': 10,
                     'message': 'Playlist ID or name must be specified.'
+                }
             }, data)
 
         playlist = request.user.playlists.create(