Move the encrypt/decrypt decision out of db and into the view

src/documents/views.py

@@ -52,12 +52,12 @@ class FetchView(SessionOrBasicAuthMixin, DetailView):
 
         if self.kwargs["kind"] == "thumb":
             return HttpResponse(
-                GnuPG.decrypted(self.object.thumbnail_file),
+                self._get_raw_data(self.object.thumbnail_file),
                 content_type=content_types[Document.TYPE_PNG]
             )
 
         response = HttpResponse(
-            GnuPG.decrypted(self.object.source_file),
+            self._get_raw_data(self.object.source_file),
             content_type=content_types[self.object.file_type]
         )
         response["Content-Disposition"] = 'attachment; filename="{}"'.format(
@@ -65,6 +65,11 @@ class FetchView(SessionOrBasicAuthMixin, DetailView):
 
         return response
 
+    def _get_raw_data(self, file_handle):
+        if self.object.storage_type == Document.STORAGE_TYPE_UNENCRYPTED:
+            return file_handle
+        return GnuPG.decrypted(file_handle)
+
 
 class PushView(SessionOrBasicAuthMixin, FormView):
     """

src/paperless/db.py

@@ -12,15 +12,11 @@ class GnuPG(object):
 
     @classmethod
     def decrypted(cls, file_handle):
-        if(not settings.ENABLE_ENCRYPTION):
-            return file_handle.read()
         return cls.gpg.decrypt_file(
             file_handle, passphrase=settings.PASSPHRASE).data
 
     @classmethod
     def encrypted(cls, file_handle):
-        if(not settings.ENABLE_ENCRYPTION):
-            return file_handle.read()
         return cls.gpg.encrypt_file(
             file_handle,
             recipients=None,