use crossterm::event;
use crossterm::event::{Event, KeyCode, KeyEvent, KeyEventKind};
use ratatui::{DefaultTerminal, Frame};
use ratatui::style::Stylize;
use ratatui::widgets::{Block, Paragraph};
use ratatui::text::Line;
#[derive(Debug, Default)]
pub struct App {
    running: bool,
}

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

    pub fn run(mut self, mut terminal: DefaultTerminal) -> color_eyre::Result<()> {
        self.running = true;
        while self.running {
            terminal.draw(|frame| self.render(frame))?;
            self.handle_input_events()?;
        }
        Ok(())
    }

    fn render(&mut self, frame: &mut Frame) {
        let title = Line::from("Gal Time Tracker")
            .bold()
            .blue()
            .centered();
        let text = "Press `q` to stop running.";
        frame.render_widget(
            Paragraph::new(text)
                .block(Block::bordered().title(title))
                .centered(),
            frame.area(),
        )
    }

    fn handle_input_events(&mut self) -> color_eyre::Result<()> {
        match event::read()? {
            // it's important to check KeyEventKind::Press to avoid handling key release events
            Event::Key(key) if key.kind == KeyEventKind::Press => self.on_key_event(key),
            Event::Mouse(_) => {}
            Event::Resize(_, _) => {}
            _ => {}
        }
        Ok(())
    }

    fn on_key_event(&mut self, key: KeyEvent) {
        match (key.modifiers, key.code) {
            (_, KeyCode::Char('q')) => self.quit(),
            _ => {}
        }
    }

    fn quit(&mut self) {
        self.running = false;
    }
}