use crate::gui::util;
use crate::util::event::{Event, Events};
use anyhow::Result;
use termion::event::Key;
use tui::{
    backend::Backend,
    layout::{Alignment, Constraint, Direction, Layout},
    widgets::Paragraph,
    Terminal,
};

pub fn show<B: Backend>(
    terminal: &mut Terminal<B>,
    events: &Events,
    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.to_string()))
                .alignment(Alignment::Center);
            f.render_widget(message, chunks[1]);
        })?;

        if wait {
            if let Event::Input(key) = events.next()? {
                match key {
                    Key::Char('q') | Key::Ctrl('c') => {
                        break;
                    }
                    _ => {}
                }
            }
        } else {
            break;
        }
    }

    Ok(())
}