mod app;
mod input;
mod theme;
mod ui;

use crossterm::{
    event, execute,
    terminal::{disable_raw_mode, enable_raw_mode, EnterAlternateScreen, LeaveAlternateScreen},
};
use ratatui::{backend::CrosstermBackend, Terminal};
use std::io::stdout;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    enable_raw_mode()?;
    let (mut width, mut height) = crossterm::terminal::size()?;
    if width == 0 || height == 0 {
        width = 80;
        height = 24;
    }
    println!("Width: {}, Height: {}", width, height);
    let use_alternate_screen =
        std::env::var("SSH_CLIENT").is_err() && std::env::var("SSH_TTY").is_err();
    let mut stdout = stdout();
    if use_alternate_screen {
        execute!(stdout, EnterAlternateScreen)?;
    }
    let backend = CrosstermBackend::new(stdout);
    let mut terminal = Terminal::new(backend)?;

    let mut app = app::App::new();
    let mut blink_counter = 0;

    loop {
        let blink = (blink_counter / 3) % 2 == 0;
        terminal.draw(|f| ui::draw(f, &app, blink))?;
        blink_counter += 1;
        let timeout = if app.show_welcome {
            std::time::Duration::from_millis(70)
        } else {
            std::time::Duration::from_millis(60)
        };
        if event::poll(timeout)? {
            let event = event::read()?;
            if !input::handle_input(&mut app, event) {
                break;
            }
        }
    }

    disable_raw_mode()?;
    if use_alternate_screen {
        execute!(terminal.backend_mut(), LeaveAlternateScreen)?;
    }
    Ok(())
}