use std::io;
use crossterm::event::{self, Event};
use harmony::maestro::Maestro;
use ratatui::{self, layout::Position, prelude::CrosstermBackend, Frame, Terminal};

pub mod tui {
    // Export any necessary modules or types from the internal tui module
}

/// Initializes the terminal UI with the provided Maestro instance.
///
/// # Arguments
///
/// * `maestro` - A reference to the Maestro instance containing registered scores.
///
/// # Example
///
/// ```rust
/// use harmony;
/// use harmony_tui::init;
///
/// #[harmony::main]
/// pub async fn main(maestro: harmony::Maestro) {
///     maestro.register(DeploymentScore::new("nginx-test", "nginx"));
///     maestro.register(OKDLoadBalancerScore::new(&maestro.inventory, &maestro.topology));
///     // Register other scores as needed
///
///     init(maestro).await.unwrap();
/// }
/// ```
pub async fn init(maestro: Maestro) -> Result<(), Box<dyn std::error::Error>> {
    HarmonyTUI::new(maestro).init().await
}

pub struct HarmonyTUI {
    maestro: Maestro,
}

impl HarmonyTUI {
    pub fn new(maestro: Maestro) -> Self {
        HarmonyTUI { maestro }
    }

    pub async fn init(self) -> Result<(), Box<dyn std::error::Error>> {
        color_eyre::install()?;
        let backend = CrosstermBackend::new(io::stdout());
        let mut terminal = Terminal::new(backend)?;

        loop {
            terminal.draw(|f| self.render(f))?;
            if matches!(event::read()?, Event::Key(_)) {
                break;
            }
        }

        Ok(())
    }

    fn render(&self, frame: &mut Frame) {
        let size = frame.area();
        frame.set_cursor_position(Position::new(size.x / 2, size.y / 2));
        frame.render_widget(
            ratatui::widgets::Paragraph::new("Hello World"),
            frame.area(),
        );
    }
}