"""
Minimal Gradio app for docstring generation.
Run: python app.py
"""

import gradio as gr
from inference import generate_docstring


def summarize_code(code: str) -> str:
    if not code or not code.strip():
        return "Paste a Python code snippet above."
    return generate_docstring(code, model_name="t5-small", max_length=128, num_beams=4)


demo = gr.Interface(
    fn=summarize_code,
    inputs=gr.Textbox(
        label="Python code",
        placeholder="def add(a, b):\n    return a + b",
        lines=8,
    ),
    outputs=gr.Textbox(label="Generated docstring"),
    title="Python Docstring Generator",
    description="Paste a Python function or snippet to get a short docstring summary.",
)

if __name__ == "__main__":
    demo.launch()