use orbtk::prelude::*;
use orbtk::theme::DEFAULT_THEME_CSS;

static WIDGET_EXT: &'static str = include_str!("../resources/stylesheets/policyholder-check.css");

fn get_theme() -> ThemeValue {
    ThemeValue::create_from_css(DEFAULT_THEME_CSS)
	.extension_css(WIDGET_EXT)
	.build()
}

#[derive(Debug, Copy, Clone)]
enum Action {
    //ClearText,
    EntryActivated(Entity),
    EntryChanged(Entity),
    //ValueChanged(Entity),
}

#[derive(AsAny)]
pub struct MainViewState {
    action: Option<Action>,
}

impl Default for MainViewState {
    fn default() -> Self {
	MainViewState { action: None }
    }
}

impl MainViewState {
    fn action(&mut self, action: impl Into<Option<Action>>) {
	self.action = action.into();
    }
}

impl State for MainViewState {
    fn update(&mut self, _: &mut Registry, ctx: &mut Context<'_>) {
	if let Some(action) = self.action {
	    match action {
		// Action::ClearText => {
		//     ctx.widget().set("policynumber", String16::from(""));
		// }
		Action::EntryActivated(entity) => {
		    let mut widget = ctx.get_widget(entity);
		    let text = widget.get_mut::<String16>("text");
		    println!("submitting {}", text);
		    //text.clear();
		}
		Action::EntryChanged(entity) => {
		    let widget = ctx.get_widget(entity);
		    let text = widget.get::<String16>("text");
		    println!("entry changed: {}", text);
		}
		// Action::ValueChanged(entity) => {
		//     let val =
		//	((*ctx.get_widget(entity).get::<f64>("val")).floor() as i32).to_string();
		//     ctx.child("value_text").set("text", String16::from(val));
		//}
	    }

	    self.action = None;
	}
    }
}

fn create_header(ctx: &mut BuildContext, text: &str) -> Entity {
    TextBlock::new()
	.text(text)
	.element("text-block")
	.class("h1")
	.build(ctx)
}

widget!(
    MainView<MainViewState> {
	sum_policynumbers: usize,
	policynumber: String16,
	result: String16
    }
);

impl Template for MainView {
    fn template(self, id: Entity, ctx: &mut BuildContext) -> Self {
	self.name("MainView").child(
	    //.result("Anzahl Versicherungsnummern: 0")
	    //.result("Policyholders count: 0").sum_policynumbers(0)
	    //.sum_policynumbers(0)
	    Grid::new()
		//.width(200.0)
		//.height(360.0)
		.columns(
		    Columns::new()
			.add(200.0)
			.add("*")
			//.add(120.0)
			.add(200.0)
			//.add("auto")
		)
		.rows(
		    Rows::new()
			//.add("auto")
			//.add(150.0)
			//.add(200.0)
			.add("*")
			.add("*")
			.build(),
		)
		.child(
		    Grid::new()
			.element("policholder_check")
			.background("fafafa")
			.margin((4.0, 24.0, 4.0, 4.0))
			.min_width(80.0)
			.min_height(180.0)
			.attach(Grid::column(1))
			.attach(Grid::row(0))
			.child(
			    Stack::new()
				.spacing(8.0)
				.orientation("vertical")
				.h_align("center")
				//.child(create_header(ctx, "Validation number policyholder"))
				.child(create_header(ctx, "Validierung Versicherungsnummer"))
				.child(
				    TextBox::new()
					.class("text_box")
					.water_mark("Versicherungs-Nr...")
					//.text("Number policyholder", id)
					.text(("policynumber", id))
					.font_size(24.0)
					.on_activate(move |states, entity| {
					    state(id, states).action(Action::EntryActivated(entity));
					})
					.on_changed(move |states, entity| {
					    state(id, states).action(Action::EntryChanged(entity));
					})
					.build(ctx),
				)
				.child(
				    TextBlock::new()
					.element("text-block")
					.id("result")
					.min_width(80.0)
					.max_width(180.0)
					//.text("Result:")
					.text("Ergebnis:")
					.build(ctx),
				)
				.build(ctx),
			)
			.build(ctx)
		)
		.child(
		    Grid::new()
			.element("logo_customer")
			.margin((4.0, 0.0, 0.0, 4.0))
			.attach(Grid::column(0))
			.attach(Grid::row(1))
			.child(
			    ImageWidget::new()
				.image("../resources/images/hiedemann_logo.png")
				//.h_align("center")
				//.v_align("bottom")
				.build(ctx),
			)
			.build(ctx),
		)
		.child(
		    Grid::new()
			.element("logo_vendor")
			.margin((4.0, 0.0, 0.0, 4.0))
			.attach(Grid::column(2))
			.attach(Grid::row(1))
			//.v_align("bottom")
			.child(
			    ImageWidget::new()
				//.image("../resources/images/networkx_logo.jpg")
				.image("../resources/images/networkx_logo.png")
				//.h_align("center")
				//.v_align("bottom")
				.build(ctx),
			)
			.build(ctx),
		)
		.build(ctx),
	    ) // MainView
    }
}

fn main() {
    Application::new()
	.window(|ctx| {
	    Window::new()
		//.title("OrbTk - Policyholder checker example")
		.title("AdvoTracker - Versicherungsnummern")
		.position((-500.0, -100.0))
		.size(480.0, 360.0)
		.min_width(80.0)
		.min_height(180.0)
		.resizeable(true)
		//.theme(get_theme())
		.background("#fafafa")
		.child(MainView::new().build(ctx))
		.build(ctx)
	})
	.run();
}

// helper to request MainViewState
fn state<'a>(id: Entity, states: &'a mut StatesContext) -> &'a mut MainViewState {
    states.get_mut(id)
}