use gpui::{
	App, Bounds, Context, FontWeight, Render, TextTransform, Window, WindowBounds, WindowOptions,
	div, prelude::*, px, rgb, size,
};

struct TextTransformPreview;

impl Render for TextTransformPreview {
	fn render(&mut self, _window: &mut Window, _cx: &mut Context<Self>) -> impl IntoElement {
		div()
			.flex()
			.flex_col()
			.gap_4()
			.bg(rgb(0x10141c))
			.size(px(720.))
			.p_8()
			.text_color(rgb(0xe5e7eb))
			.child(
				div()
					.text_xl()
					.font_weight(FontWeight::BOLD)
					.child("Text spacing and transforms"),
			)
			.child(
				div()
					.flex()
					.flex_col()
					.gap_2()
					.p_4()
					.bg(rgb(0x1f2937))
					.rounded_md()
					.child(div().text_sm().text_color(rgb(0x9ca3af)).child("Uppercase"))
					.child(
						div()
							.text_2xl()
							.font_weight(FontWeight::SEMIBOLD)
							.letter_spacing(px(3.))
							.text_transform(TextTransform::Uppercase)
							.text_color(rgb(0x93c5fd))
							.child("letter spacing works"),
					),
			)
			.child(
				div()
					.flex()
					.flex_col()
					.gap_2()
					.p_4()
					.bg(rgb(0x1f2937))
					.rounded_md()
					.child(
						div()
							.text_sm()
							.text_color(rgb(0x9ca3af))
							.child("Capitalize"),
					)
					.child(
						div()
							.text_2xl()
							.letter_spacing(px(1.5))
							.text_transform(TextTransform::Capitalize)
							.text_color(rgb(0xfcd34d))
							.child("each word keeps its byte offsets"),
					),
			)
	}
}

fn main() {
	gpui_platform::application().run(|cx: &mut App| {
		cx.activate(true);
		let bounds = Bounds::centered(None, size(px(720.), px(480.)), cx);
		if let Err(error) = cx.open_window(
			WindowOptions {
				window_bounds: Some(WindowBounds::Windowed(bounds)),
				..Default::default()
			},
			|_, cx| cx.new(|_| TextTransformPreview),
		) {
			eprintln!("failed to open preview window: {error}");
			return;
		}
	});
}