--- a/libervia/cli/cmd_file.py	Tue Jun 18 12:06:45 2024 +0200
+++ b/libervia/cli/cmd_file.py	Wed Jun 19 18:44:57 2024 +0200
@@ -80,12 +80,10 @@
             "-e",
             "--encrypt",
             action="store_true",
-            help=_("end-to-end encrypt the file transfer")
+            help=_("end-to-end encrypt the file transfer"),
         )
         self.parser.add_argument(
-            "--webrtc",
-            action="store_true",
-            help=_("Use WebRTC Data Channel transport.")
+            "--webrtc", action="store_true", help=_("Use WebRTC Data Channel transport.")
         )
 
     async def on_progress_started(self, metadata):
@@ -111,7 +109,6 @@
             self.disp(_("Can't send file to {jid}".format(jid=self.args.jid)), error=True)
             self.host.quit(2)
 
-
     async def start(self):
         file_ = None
         for file_ in self.args.files:
@@ -170,17 +167,16 @@
                 if self.verbosity >= 2:
                     root_logger.setLevel(logging.DEBUG)
                 from libervia.frontends.tools.webrtc_file import WebRTCFileSender
+
                 aio.install_glib_asyncio_iteration()
                 file_sender = WebRTCFileSender(
                     self.host.bridge,
                     self.profile,
                     on_call_start_cb=self.got_id,
-                    end_call_cb=self.host.a_quit
+                    end_call_cb=self.host.a_quit,
                 )
                 await file_sender.send_file_webrtc(
-                    file_path,
-                    self.args.jid,
-                    self.args.name
+                    file_path, self.args.jid, self.args.name
                 )
             else:
                 try:
@@ -319,7 +315,9 @@
             use_verbose=True,
             help=_("wait for a file to be sent by a contact"),
         )
-        self._overwrite_refused = False  # True when one overwrite has already been refused
+        self._overwrite_refused = (
+            False  # True when one overwrite has already been refused
+        )
         self.action_callbacks = {
             C.META_TYPE_CONFIRM: self.on_confirm_action,
             C.META_TYPE_FILE: self.on_file_action,
@@ -377,12 +375,10 @@
             await self.host.a_quit()
 
     async def on_webrtc_file(
-        self,
-        from_jid: jid.JID,
-        session_id: str,
-        file_data: dict
+        self, from_jid: jid.JID, session_id: str, file_data: dict
     ) -> None:
         from libervia.frontends.tools.webrtc_file import WebRTCFileReceiver
+
         aio.install_glib_asyncio_iteration()
         root_logger = logging.getLogger()
         # we don't want any formatting for messages from webrtc
@@ -401,29 +397,20 @@
             filename = file_data.get("name", "unammed_file")
             dest_path /= filename
             if dest_path.exists() and not self.args.force:
-                self.host.disp(
-                    "Destination file already exists",
-                    error=True
-                )
+                self.host.disp("Destination file already exists", error=True)
                 aio.run_from_thread(
                     self.host.a_quit, C.EXIT_ERROR, loop=self.host.loop.loop
                 )
                 return
 
         file_receiver = WebRTCFileReceiver(
-            self.host.bridge,
-            self.profile,
-            on_close_cb=self._on_webrtc_close
+            self.host.bridge, self.profile, on_close_cb=self._on_webrtc_close
         )
 
         await file_receiver.receive_file_webrtc(
-            from_jid,
-            session_id,
-            dest_path,
-            file_data
+            from_jid, session_id, dest_path, file_data
         )
 
-
     def get_xmlui_id(self, action_data):
         # FIXME: we temporarily use ElementTree, but a real XMLUI managing module
         #        should be available in the futur
@@ -482,8 +469,9 @@
             if self._overwrite_refused:
                 self.disp(_("File refused because overwrite is needed"), error=True)
                 await self.host.bridge.action_launch(
-                    xmlui_id, data_format.serialise({"cancelled": C.BOOL_TRUE}),
-                    profile_key=profile
+                    xmlui_id,
+                    data_format.serialise({"cancelled": C.BOOL_TRUE}),
+                    profile_key=profile,
                 )
                 return self.host.quit_from_signal(2)
             await self.set_progress_id(progress_id)
@@ -495,11 +483,7 @@
                 except KeyError:
                     self.disp(_("ignoring action without session id"), 1)
                     return
-                await self.on_webrtc_file(
-                    from_jid,
-                    session_id,
-                    file_data
-                )
+                await self.on_webrtc_file(from_jid, session_id, file_data)
 
             else:
                 xmlui_data = {"path": self.path}
@@ -604,8 +588,9 @@
             help=_("overwrite existing file without confirmation"),
         )
         self.parser.add_argument(
-            "attachment", type=str,
-            help=_("URI of the file to retrieve or JSON of the whole attachment")
+            "attachment",
+            type=str,
+            help=_("URI of the file to retrieve or JSON of the whole attachment"),
         )
 
     async def on_progress_started(self, metadata):