import gradio as gr
from src.utils.helpers import get_clean_text

from src.core.engine import engine


def user_input(user_message, history):
    if not user_message:
        return None, history
    history = history or []
    history.append({"role": "user", "content": str(user_message)})
    return "", history


def bot_response(history, system_prompt, temperature, max_tokens):
    messages = [{"role": "system", "content": system_prompt}]
    for msg in history[-15:]:
        messages.append(
            {"role": msg["role"], "content": get_clean_text(msg["content"])}
        )

    history.append({"role": "assistant", "content": ""})

    try:
        stream = engine.generate(messages, max_tokens, temperature, stream=True)
        partial_text = ""
        for chunk in stream:
            delta = chunk["choices"][0]["delta"]
            if "content" in delta:
                partial_text += delta["content"]
                history[-1]["content"] = partial_text
                yield history
    except Exception as e:
        history[-1]["content"] += f"\n\n❌ Error: {str(e)}"
        yield history


def set_interactive(is_interactive):
    return (
        gr.update(
            interactive=is_interactive,
            placeholder="Wait..." if not is_interactive else "Type...",
        ),
        gr.update(interactive=is_interactive),
    )