use eframe::egui;
use rand::Rng;

fn main() -> Result<(), eframe::Error> {
    let options = eframe::NativeOptions {
        initial_window_size: Some(egui::vec2(214.0, 100.0)),
        ..Default::default()
    };

    // Our application state:
    let mut value = "0".to_owned();

    eframe::run_simple_native("GUI component interaction", options, move |ctx, _frame| {
        egui::CentralPanel::default().show(ctx, |ui| {
            ui.horizontal(|ui| {
                let name_label = ui.label("Value: ");
                ui.text_edit_singleline(&mut value)
                    .labelled_by(name_label.id);
            });
            ui.horizontal(|ui| {
                if ui.button("Increment").clicked() {
                    if let Ok(v) = value.parse::<usize>() {
                        value = (v + 1).to_string()
                    }
                }
                if ui.button("Random").clicked() {
                    value = (rand::thread_rng().gen_range(1..=10000)).to_string();
                }
            });
        });
    })
}