from pathlib import Path

import gradio as gr

from logic.profile import Me


def _load_css() -> str:
    css_path = Path(__file__).parent / "styles.css"
    with open(css_path, "r", encoding="utf-8") as f:
        return f.read()


def build_interface():
    me = Me()
    custom_css = _load_css()

    with gr.Blocks(css=custom_css) as demo:
        with gr.Row(elem_classes="app-row"):
            with gr.Column(scale=3, elem_classes="chat-column"):
                gr.Markdown(
                    "### Chat with **Evison Ndoni**",
                    elem_classes="title-text",
                )
                chatbot = gr.Chatbot(
                    height=520,
                    elem_id="chatbot",
                )
                with gr.Row(elem_classes="input-row"):
                    msg = gr.Textbox(
                        placeholder=(
                            "Ask about my background, past work, AI/agentic AI, "
                            "or anything career-related..."
                        ),
                        label="",
                        show_label=False,
                        elem_id="chat-input",
                    )

                with gr.Row(elem_classes="button-row"):
                    send_btn = gr.Button("Send", elem_id="send-btn")
                    clear_btn = gr.Button("Clear chat", elem_id="clear-btn")

            with gr.Column(scale=2, elem_classes="sidebar-column"):
                gr.Markdown(
                    """
### About Evison Ndoni

- Software engineer (React, Next.js, TypeScript, Tailwind CSS, Flutter)  
- Currently learning **Agentic AI** and building AI-powered projects  
- Enjoys clean, SaaS-style product design and long-term thinking  

If you're a recruiter, hiring manager, or potential collaborator,  
feel free to ask anything about my experience, stack, or projects.

You can also **share your email in the chat** if you'd like me to follow up.
                    """,
                    elem_classes="about-card",
                )


        def respond(message, history):
            """
            Gradio 6 Chatbot uses a 'messages' format:
            history is a list of dicts: [{ "role": "user"|"assistant", "content": "..." }, ...]
            We must return the *updated* history in the same format.
            """
            if history is None:
                history = []

            assistant_reply = me.chat(message, history)

            new_history = history + [
                {"role": "user", "content": message},
                {"role": "assistant", "content": assistant_reply},
            ]
            return new_history

        send_btn.click(
            respond,
            inputs=[msg, chatbot],
            outputs=chatbot,
        )
        send_btn.click(lambda: "", inputs=None, outputs=msg)
        clear_btn.click(lambda: [], inputs=None, outputs=chatbot)

        demo.load(lambda: [], None, chatbot)

    return demo