fix fn

app.py

@@ -1,10 +1,14 @@
 import gradio as gr
 
-def split_into_sentences(text, remove_whitespace):
+def split_into_sentences(text):
+    # Split the text by newline characters
     sentences = text.split('\n')
-    if remove_whitespace:
-        sentences = [s.strip() for s in sentences if s.strip() != '']
-    return sentences
+
+    # Clean up any leading/trailing whitespace in each sentence
+    sentences = [s.strip() for s in sentences]
+
+    # Join the sentences with newline characters to display each on a new line
+    return '\n'.join(sentences)
 
 def main():
     with gr.Blocks() as demo:
@@ -12,18 +16,40 @@ def main():
 
         with gr.Row():
             text_input = gr.Textbox(label="Enter or paste your text", lines=5)
-            whitespace_checkbox = gr.Checkbox(label="Remove extra whitespace", value=True)
+            file_input = gr.File(label="Upload Text File")
 
         with gr.Row():
             split_button = gr.Button("Split into Sentences")
-            sentences_output = gr.Textbox(label="Sentences", lines=5)
+            sentences_output = gr.Textbox(label="Sentences", lines=10)
+            preview_output = gr.Textbox(label="Preview", lines=3)
+
+        # Update preview when file is uploaded
+        def update_preview(file):
+            if file:
+                with open(file.name, 'r') as f:
+                    preview_text = f.read()
+                    return preview_text[:200]  # Show first 200 characters
+            return ""
+
+        # Split text into sentences
+        def process_text(text, file):
+            if file:
+                with open(file.name, 'r') as f:
+                    text = f.read()
+            return split_into_sentences(text)
 
         split_button.click(
-            fn=split_into_sentences,
-            inputs=[text_input, whitespace_checkbox],
+            fn=process_text,
+            inputs=[text_input, file_input],
             outputs=sentences_output
         )
 
+        file_input.change(
+            fn=update_preview,
+            inputs=[file_input],
+            outputs=[preview_output]
+        )
+
     demo.launch()
 
 if __name__ == "__main__":