app.py

import gradio as gr
import os
import sys

print("=== DEBUG: Starting minimal Gradio test ===")
print(f"Python version: {sys.version}")
print(f"Gradio version: {gr.__version__}")
print(f"Working directory: {os.getcwd()}")
print(f"PORT env var: {os.environ.get('PORT', 'Not set')}")

def simple_function(text):
    return f"You entered: {text}"

# Minimal interface
with gr.Blocks(title="Debug Test") as demo:
    gr.Markdown("# Debug Test - If you see this, Gradio is working!")
    
    with gr.Row():
        text_input = gr.Textbox(label="Test Input")
        text_output = gr.Textbox(label="Test Output")
        btn = gr.Button("Test")
    
    btn.click(simple_function, inputs=text_input, outputs=text_output)

if __name__ == "__main__":
    port = int(os.environ.get("PORT", 7860))
    print(f"=== Attempting to launch on 0.0.0.0:{port} ===")
    
    try:
        demo.launch(
            server_name="0.0.0.0",
            server_port=port,
            share=False,
            show_error=True
        )
        print("=== Gradio launched successfully ===")
    except Exception as e:
        print(f"=== ERROR: Gradio failed to launch ===")
        print(f"Error: {e}")
        import traceback
        traceback.print_exc()
        sys.exit(1)