use crate::gui::util;
use anyhow::Result;
use crossterm::event::{self, Event, KeyCode, KeyModifiers};
use tui::{
    backend::Backend,
    layout::{Alignment, Constraint, Direction, Layout},
    widgets::Paragraph,
    Terminal,
};

pub fn show<B: Backend>(
    terminal: &mut Terminal<B>,
    title: &str,
    message: &str,
    wait: bool,
) -> Result<()> {
    loop {
        terminal.draw(|f| {
            let chunks = Layout::default()
                .direction(Direction::Vertical)
                .margin(2)
                .constraints([Constraint::Length(1), Constraint::Percentage(50)].as_ref())
                .split(f.size());

            let d1 = util::title(title);
            f.render_widget(d1, chunks[0]);

            let message = Paragraph::new(util::center_vertically(chunks[1], message))
                .alignment(Alignment::Center);
            f.render_widget(message, chunks[1]);
        })?;

        if wait {
            if let Event::Key(key) = event::read()? {
                if key.code == KeyCode::Char('q')
                    || key.code == KeyCode::Char('c')
                        && key.modifiers.contains(KeyModifiers::CONTROL)
                {
                    break;
                }
            }
        } else {
            break;
        }
    }

    Ok(())
}