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---
// SPDX-FileCopyrightText: 2024 Shota FUJI <pockawoooh@gmail.com>
// SPDX-License-Identifier: AGPL-3.0-only

import DocsLayout from "../../layouts/DocsLayout.astro";
import Document from "../../components/Document.astro";
import Preview from "../../components/Preview.astro";

const gridItems = Array.from({ length: 20 }, (_, i) => {
	const name = `--space-px-${20 - i}`;
	const hasLabel = i <= 5;

	const properties = [
		`width: var(${name})`,
		`height: var(${name})`,
		hasLabel ? "padding: var(--space-px-1) var(--space-px-2)" : null,
	];

	return {
		style: properties.filter((s) => typeof s === "string").join(";"),
		label: hasLabel ? name : null,
	};
});
---

<script>
const interactiveContainer = document.getElementById("interactive_container");
const interactiveSlider = document.getElementById("interactive_slider");
const interactiveLabel = document.getElementById("interactive_label");

function syncInteractiveGap() {
	const size = interactiveSlider.value;
	interactiveContainer.style.gap = `var(--space-px-${size})`;
	interactiveLabel.textContent = `--space-x-${size}`;
}

document
	.getElementById("interactive_slider")
	.addEventListener("input", (event) => {
		syncInteractiveGap();
	});

syncInteractiveGap();
</script>

<style>
	.list.list {
		display: grid;
		grid-template-columns: var(--space-px-20);
		grid-template-rows: var(--space-px-20);
		width: 100%;
		padding: 0;
	}

	.box.box {
		display: inline-flex;
		align-items: end;
		border: 1px solid oklch(var(--color-border) / var(--alpha-border-strong));
		grid-column: 1 / 2;
		grid-row: 1 / 2;
		font-size: var(--font-xs);
		font-family: var(--font-mono);

		border-radius: var(--space-px-1);
		color: oklch(var(--color-fg) / var(--alpha-fg-subtle));
		list-style: none;
	}
	.box:not(:first-child) {
		border-inline-start-color: transparent;
		border-block-start-color: transparent;
	}

	.interactive-scroller {
		display: block;
		margin-block-end: var(--space-px-6);

		overflow-x: auto;
	}

	.interactive-container {
		display: flex;
		align-items: center;
		width: calc(var(--space-px-6) * 2 + var(--space-px-20));
	}

	.fill {
		display: block;
		width: var(--space-px-6);
		height: var(--space-px-12);

		background-color: oklch(var(--color-fg) / var(--alpha-fg-strong));
		border-radius: 2px;
	}

	.interactive-controls {
		display: flex;
		flex-direction: column;
		align-items: start;
		gap: var(--space-px-3);
	}

	.interactive-label {
		font-size: var(--font-sm);
		font-family: var(--font-mono);
	}

	.slider {
		border: 1px solid oklch(var(--color-border) / var(--alpha-border-subtle));

		background-color: oklch(var(--color-fg) / 2%);
		border-radius: 0.6em;
	}
	.slider:focus-visible {
		border-color: oklch(var(--color-focus));
		box-shadow: 0 0 0 var(--size-focus-ring)
			oklch(var(--color-focus) / var(--alpha-focus-ring));
	}
</style>

<DocsLayout title="Spacings">
	<Document>
		<p>
			要素間・周囲の隙間の大きさは <code>--space-px-*</code>
			というカスタムプロパティによって一覧定義されています。
		</p>
		<Preview title="List">
			<ul class="list">
				{
					gridItems.map(({ style, label }) => (
						<li class="box" style={style}>{label}</li>
					))
				}
			</ul>
		</Preview>
		<Preview title="Interactive Gap">
			<div class="interactive-scroller">
				<div
					id="interactive_container"
					class="interactive-container"
					style="gap: var(--space-px-1)"
				>
					<div class="fill" />
					<div class="fill" />
				</div>
			</div>
			<div class="interactive-controls">
				<input
					id="interactive_slider"
					class="slider"
					type="range"
					value="1"
					min="1"
					max="20"
					step="1"
					aria-label="Gap size"
				/>
				<span id="interactive_label" class="interactive-label"
				>--space-px-1</span>
			</div>
		</Preview>
	</Document>
</DocsLayout>