use std::{error::Error, io};

use crossterm::{
	event::{self, Event, KeyCode, KeyEventKind},
	execute,
	terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::text::Line;
use ratatui::{prelude::*, widgets::*};

#[derive(Default)]
struct App {
	popup_opened: bool,
}

impl App {
	fn new() -> App {
		App::default()
	}
}

fn main() -> Result<(), Box<dyn Error>> {
	// setup terminal
	enable_raw_mode()?;
	let mut stdout = io::stdout();
	execute!(stdout, EnterAlternateScreen)?;
	let backend = CrosstermBackend::new(stdout);
	let mut terminal = Terminal::new(backend)?;

	// create app and run it
	let app = App::new();
	let res = run_app(&mut terminal, app);

	// restore terminal
	disable_raw_mode()?;
	execute!(terminal.backend_mut(), LeaveAlternateScreen)?;
	terminal.show_cursor()?;

	if let Err(err) = res {
		println!("{err:?}");
	}

	Ok(())
}

fn run_app<B: Backend>(terminal: &mut Terminal<B>, mut app: App) -> io::Result<()> {
	loop {
		terminal.draw(|f| ui(f, &mut app))?;

		if let Event::Key(key) = event::read()? {
			if key.kind == KeyEventKind::Press {
				match key.code {
					KeyCode::Char('q') => return Ok(()),
					KeyCode::Char('p') => app.popup_opened = !app.popup_opened,
					_ => {}
				}
			}
		}
	}
}

fn ui(f: &mut Frame, app: &mut App) {
	let area = f.area();

	let vertical = Layout::default()
		.direction(Direction::Vertical)
		.constraints([
			Constraint::Percentage(33),
			Constraint::Percentage(34),
			Constraint::Percentage(33),
		])
		.split(area);

	let text = if app.popup_opened {
		"Press `p` to close the popup"
	} else {
		"Press `p` to open the popup"
	};

	let paragraph = Paragraph::new(text.slow_blink())
		.alignment(Alignment::Center)
		.wrap(Wrap { trim: true });
	f.render_widget(paragraph, vertical[1]);

	let block = Block::default()
		.title(" Popup Demo ")
		.title_alignment(Alignment::Center)
		.borders(Borders::ALL);
	f.render_widget(block, area);

	if app.popup_opened {
		let popup = tui_confirm_dialog::PopupMessage::new(
			" Loading ",
			vec![
				Line::from("Example popup showing a loading message"),
				Line::from("The operation was successful"),
			],
		)
		.title_alignment(Alignment::Center)
		.text_alignment(Alignment::Center)
		.text_style(Style::new().black())
		.bg(Color::Yellow)
		.borders(Borders::ALL)
		.border_type(BorderType::Rounded)
		.border_style(Style::new().fg(Color::Red));
		f.render_widget(popup, area);
	}
}