Add useable demo to test functionality (#1)

- Add useable demo to test functionality (7e52d7ce69c3ed4cb6ad168876f02e6098ddf4be)

app.py

@@ -10,4 +10,4 @@ if "OPENAI_API_KEY" not in os.environ:
     os.environ["OPENAI_API_KEY"] = getpass("Enter OpenAI API key:")
 
 ## Uncomment the line below to launch the chat app with UI
-demo.launch(debug=True, share=True)
+demo.launch(debug=True)

functions/chat_functions.py

@@ -59,12 +59,26 @@ def delete_db(req: gr.Request):
     if os.path.exists(db_file_path):
         os.remove(db_file_path)
 
-css= ".file_marker .large{min-height:50px !important;}"
+def run_example(input):
+    return input
+
+def example_display(input):
+    if input == None:
+        display = True
+    else:
+        display = False
+    return gr.update(visible=display)
+
+css= ".file_marker .large{min-height:50px !important;} .example_btn{max-width:300px;}"
 
 with gr.Blocks(css=css) as demo:
     title = gr.HTML("<h1 style='text-align:center;'>Virtual Data Analyst</h1>")
     description = gr.HTML("<p style='text-align:center;'>Upload a CSV file and chat with our virtual data analyst to get insights on your data set</p>")
+    example_file = gr.File(visible=False, value="samples/bank_marketing_campaign.csv")
+    example_btn = gr.Button(value="Try Me: bank_marketing_campaign.csv", elem_classes="example_btn", size="md", variant="primary")
     file_output = gr.File(label="CSV File", show_label=True, elem_classes="file_marker", file_types=['.csv'])
+    example_btn.click(fn=run_example, inputs=example_file, outputs=file_output)
+    file_output.change(fn=example_display, inputs=file_output, outputs=example_btn)
 
     @gr.render(inputs=file_output)
     def data_options(filename, request: gr.Request):