use clap::Parser;

mod app;
mod ui;

#[derive(Parser)]
#[command(name = "log-viewer", about = "A log viewer TUI")]
struct Cli {
    /// Log files to open
    files: Vec<String>,
}

fn main() -> anyhow::Result<()> {
    let cli = Cli::parse();

    crossterm::terminal::enable_raw_mode()?;
    let mut stdout = std::io::stdout();
    crossterm::execute!(stdout, crossterm::terminal::EnterAlternateScreen)?;
    let backend = ratatui::backend::CrosstermBackend::new(stdout);
    let mut terminal = ratatui::Terminal::new(backend)?;

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

    if let Some(file) = cli.files.first()
        && let Err(e) = app.load_file(file)
    {
        eprintln!("Error loading file: {e}");
        std::process::exit(1);
    }

    while !app.should_quit {
        terminal.draw(|frame| ui::render(frame, &mut app))?;
        if crossterm::event::poll(std::time::Duration::from_millis(100))? {
            match crossterm::event::read()? {
                crossterm::event::Event::Key(key) => app.handle_key(key),
                crossterm::event::Event::Resize(_w, _h) => {}
                _ => {}
            }
        }
    }

    crossterm::terminal::disable_raw_mode()?;
    crossterm::execute!(
        terminal.backend_mut(),
        crossterm::terminal::LeaveAlternateScreen
    )?;
    terminal.show_cursor()?;

    Ok(())
}