import os

import gradio as gr
from dotenv import load_dotenv
from research_manager import ResearchManager

load_dotenv(override=True)


async def run(query: str, recipient_email: str):
    """Show a short placeholder in Gradio; full step-by-step log stays in the terminal (prints)."""
    yield "*Running research…*"
    last = ""
    async for chunk in ResearchManager().run(query, recipient_email=recipient_email or None):
        last = str(chunk)
    yield last


with gr.Blocks(theme=gr.themes.Default(primary_hue="sky")) as demo:
    gr.Markdown("# Deep Research")
    query_textbox = gr.Textbox(label="What topic would you like to research?")
    email_textbox = gr.Textbox(
        label="Email for report (optional)",
        placeholder="you@example.com",
    )
    run_button = gr.Button("Run", variant="primary")
    report = gr.Markdown(label="Report")
    run_inputs = [query_textbox, email_textbox]
    run_button.click(fn=run, inputs=run_inputs, outputs=report)
    query_textbox.submit(fn=run, inputs=run_inputs, outputs=report)


def launch_demo() -> None:
    """Local: open browser. Hugging Face / most hosts: PORT is set — bind 0.0.0.0 (never inbrowser there)."""
    port = os.environ.get("PORT")
    print(f"launch_demo: PORT={port!r}", flush=True)
    if port is not None:
        demo.launch(server_name="0.0.0.0", server_port=int(port))
    else:
        demo.launch(inbrowser=True)


if __name__ == "__main__":
    launch_demo()