fix suggested_file_name for torrent on json encoder

lbry/extras/daemon/json_response_encoder.py

@@ -294,7 +294,7 @@ class JSONResponseEncoder(JSONEncoder):
             'stopped': not managed_stream.running,
             'stream_hash': None,
             'stream_name': None,
-            'suggested_file_name': None,
+            'suggested_file_name': managed_stream.suggested_file_name,
             'sd_hash': None,
             'mime_type': managed_stream.mime_type,
             'key': None,
@@ -328,7 +328,6 @@ class JSONResponseEncoder(JSONEncoder):
             result.update({
                 'stream_hash': managed_stream.stream_hash,
                 'stream_name': managed_stream.stream_name,
-                'suggested_file_name': managed_stream.suggested_file_name,
                 'sd_hash': managed_stream.descriptor.sd_hash,
                 'key': managed_stream.descriptor.key,
                 'blobs_completed': managed_stream.blobs_completed,

lbry/file/source.py

@@ -92,6 +92,10 @@ class ManagedDownloadSource:
     def added_on(self) -> Optional[int]:
         return self._added_on
 
+    @property
+    def suggested_file_name(self):
+        return self._file_name
+
     @property
     def status(self) -> str:
         return self._status

tests/integration/datanetwork/test_file_commands.py

@@ -86,6 +86,7 @@ class FileCommands(CommandTestCase):
         self.assertEqual(btih, file['metadata']['source']['bt_infohash'])
         self.assertAlmostEqual(time.time(), file['added_on'], delta=2)
         self.assertEqual("application/octet-stream", file['mime_type'])
+        self.assertEqual("tmp1", file['suggested_file_name'])
         self.assertIn(btih, self.client_session._handles)
 
         # stream over streaming API (full range of the largest file)