Update app.py

app.py

@@ -64,13 +64,16 @@ app.layout = dbc.Container([
 def update_output(contents, filename):
     if contents is not None:
         logger.info(f"PDF uploaded: {filename}")
-        initial_range = dbc.Row([
-            dbc.Col(dbc.Input(id={'type': 'range-input', 'index': 0}, type='text', placeholder='Enter page range (e.g., 1-3)'), width=10),
-            dbc.Col(dbc.Button("Remove", id={'type': 'remove-range', 'index': 0}, color="danger", size="sm"), width=2),
-        ], className="mb-2")
+        initial_range = create_range_input(0)
         return html.Div(f"Uploaded: {filename}"), False, [initial_range]
     return "", True, []
 
+def create_range_input(index):
+    return dbc.Row([
+        dbc.Col(dbc.Input(id={'type': 'range-input', 'index': index}, type='text', placeholder='Enter page range (e.g., 1-3)'), width=10),
+        dbc.Col(dbc.Button("Remove", id={'type': 'remove-range', 'index': index}, color="danger", size="sm"), width=2),
+    ], className="mb-2")
+
 @callback(
     Output('ranges-container', 'children', allow_duplicate=True),
     Input('add-range', 'n_clicks'),
@@ -80,10 +83,7 @@ def update_output(contents, filename):
 def add_range(n_clicks, existing_ranges):
     if n_clicks:
         new_index = len(existing_ranges)
-        new_range = dbc.Row([
-            dbc.Col(dbc.Input(id={'type': 'range-input', 'index': new_index}, type='text', placeholder='Enter page range (e.g., 1-3)'), width=10),
-            dbc.Col(dbc.Button("Remove", id={'type': 'remove-range', 'index': new_index}, color="danger", size="sm"), width=2),
-        ], className="mb-2")
+        new_range = create_range_input(new_index)
         existing_ranges.append(new_range)
     return existing_ranges