use std::sync::Arc;

use druid::{
    widget::{prelude::*, Flex, SizedBox, TextBox},
    AppLauncher, Color, Lens, LocalizedString, WidgetExt, WindowDesc,
};

fn launch<T: Data, W: Widget<T> + 'static>(make_ui: fn() -> W, data: T) {
    let main_window = WindowDesc::new(make_ui())
        .title(LocalizedString::new("learning the basics").with_placeholder("Hello world!"));

    AppLauncher::with_window(main_window).launch(data).unwrap();
}

#[derive(Clone, Data, Lens)]
struct AppState {
    name: Arc<String>,
    dog_name: Arc<String>,
}

fn main() {
    let ui = || {
        Flex::column()
            .with_child(
                TextBox::new()
                    .with_placeholder("What is your name?")
                    .fix_width(200.0)
                    .lens(AppState::name),
            )
            .with_child(SizedBox::empty().height(300.))
            .with_child(
                TextBox::new()
                    .with_placeholder("What is your dog's name?")
                    .fix_width(200.0)
                    .lens(AppState::dog_name),
            )
            .background(Color::GREEN)
    };

    launch(
        ui,
        AppState {
            name: Arc::new("".to_string()),
            dog_name: Arc::new("".to_string()),
        },
    );
}