only refresh repos, clean up UI

app.py

@@ -10,20 +10,18 @@ import gradio as gr
 import list_repos
 import refresh_lists
 
-def greet(name):
+def refresh_on_submit(progress=gr.Progress(track_tqdm=True)):
     try:
         refresh_repos()
-        refresh_files()
-        return "Hello " + name + "!!"
     except:
         raise gr.Error(str(sys.exc_info()))
 
-def refresh_repos(progress=gr.Progress(track_tqdm=True)):
+def refresh_repos():
     list_repos.write_repos_to_db()
 
-def refresh_files(progress=gr.Progress(track_tqdm=True)):
+def refresh_files():
     while True:
         refresh_lists.refresh_oldest_repo()
 
-demo = gr.Interface(fn=greet, inputs="text", outputs="text")
+demo = gr.Interface(fn=refresh_on_submit, inputs=None, outputs="text")
 demo.launch()

list_files.py

@@ -61,6 +61,8 @@ def write_files_to_db(repo):
     print("Inserting new rows from HFFileSystem query for repo {}".format(repo), file=sys.stderr)
     for file in tqdm(list_files_from_hub(repo)):
         is_lfs = file["lfs"] is not None
+        # Something is wrong below -- occasionally see an error like
+        # sqlite3.OperationalError: near "t": syntax error
         query = "INSERT INTO files VALUES ('{}', {}, '{}', {}, '{}', '{}', {}, {}, '{}', {}, '{}', '{}', '{}')".format(
             file["name"],
             int(time.time()),