src/ui/login_ui.py

import gradio as gr
from src.services.auth_service import authenticate_user


def render_login(db_path: str, auth_state: gr.State):
    with gr.Row():
        with gr.Column():
            gr.Markdown("## Login")

            username = gr.Textbox(label="Username")
            password = gr.Textbox(label="Password", type="password")

            login_btn = gr.Button("Login", variant="primary")
            logout_btn = gr.Button("Logout", visible=False)

            status = gr.Markdown("🔒 Not logged in")

    def do_login(u, p):
        user = authenticate_user(db_path, u, p)
        if not user:
            return None, "❌ Invalid credentials", False, True
        return (
            user,
            f"✅ Logged in as **{user['username']}**",
            True,
            False,
        )

    def do_logout():
        return None, "🔒 Logged out", False, True

    login_btn.click(
        do_login,
        inputs=[username, password],
        outputs=[auth_state, status, logout_btn, login_btn],
    )

    logout_btn.click(
        do_logout,
        outputs=[auth_state, status, logout_btn, login_btn],
    )