Metadata story

'use client';import { METADATA_RESTING, METADATA_STORY_GRID } from '@/components/visuals/stories/metadata-story-scenes';import { DotStory, type LoadDotStory } from '@/components/visuals/dot-engine/dot-story';const loadMetadataStory: LoadDotStory = async (stage) => {	const { createMetadataStoryPlayer } = await import('@/components/visuals/stories/metadata-story-player');	return createMetadataStoryPlayer(stage);};/** * The "Use available metadata" card's picture: a tag becomes three mapped URLs, two of which gain their title and * description while the third waits. With reduced motion it shows the URLs as enriched as they get. */export function MetadataStory({ className }: { className?: string }) {	return <DotStory grid={METADATA_STORY_GRID} resting={METADATA_RESTING} load={loadMetadataStory} className={className} />;}

import { CARDS_ENRICHED, CARDS_FOUND, CARD_TEXTS, ENRICHED_COUNT, METADATA_STORY_GRID, TAG_CAPTION, TAG_PICTURE, enrichedStatus, paintEnriched } from '@/components/visuals/stories/metadata-story-scenes';import { createBeatStoryPlayer } from '@/components/visuals/dot-engine/dot-story-beats';import { clamp01, easeOut } from '@/components/visuals/dot-engine/dot-story-cells';import type { DotStoryPlayer, DotStoryStage } from '@/components/visuals/dot-engine/dot-story-player';/** * One map's metadata, played as a loop: a tag melts into three mapped URLs, each with a block of rings where its * metadata will go; the first two clear and gain a title and description, and the newest stays pending. */const MELT_SECONDS = 1.1;const DETAIL = { at: 0.5, fadeSeconds: 0.3 };const ENRICHING = { startsAt: 0.9, everySeconds: 0.9, seconds: 0.4, textAfterSeconds: 0.25, textSeconds: 0.3 };const ENRICHED_AT = ENRICHING.startsAt + (ENRICHED_COUNT - 1) * ENRICHING.everySeconds + ENRICHING.seconds;const enrichesAt = (card: number) => (card < ENRICHED_COUNT ? ENRICHING.startsAt + card * ENRICHING.everySeconds : Infinity);export function createMetadataStoryPlayer(stage: DotStoryStage): DotStoryPlayer {	const [tagLabel, tagValue, tagDetail] = TAG_CAPTION;	return createBeatStoryPlayer(stage, {		grid: METADATA_STORY_GRID,		resting: { beat: 1, heldSeconds: ENRICHED_AT + 1 },		beats: [			{				picture: TAG_PICTURE,				arrival: { kind: 'melts', seconds: MELT_SECONDS },				holdSeconds: 2.4,				write(pen, heldSeconds) {					pen.text(tagLabel);					pen.text(tagValue);					pen.text(tagDetail, clamp01((heldSeconds - DETAIL.at) / DETAIL.fadeSeconds));				},			},			{				picture: CARDS_FOUND,				departure: CARDS_ENRICHED,				arrival: { kind: 'melts', seconds: MELT_SECONDS },				holdSeconds: ENRICHED_AT + 3.2,				animate: (states, heldSeconds) =>					void paintEnriched(						states,						CARD_TEXTS.map((_, card) => easeOut(clamp01((heldSeconds - enrichesAt(card)) / ENRICHING.seconds)))					),				write(pen, heldSeconds) {					CARD_TEXTS.forEach(({ url, status, title, description }, card) => {						const written = clamp01((heldSeconds - enrichesAt(card) - ENRICHING.textAfterSeconds) / ENRICHING.textSeconds);						pen.text(url);						pen.text(status, 1 - written);						pen.text(enrichedStatus(status), written);						pen.text(title, written);						pen.text(description, written);					});				},			},		],	});}

import { DOT_ABSENT, DOT_FILLED, DOT_HOLLOW, type DotGrid } from '@/components/visuals/dot-engine/dot-morph-dots';import { pictureOf } from '@/components/visuals/dot-engine/dot-story-beats';import { polygon, solidWithSpeckle, type DotPainter } from '@/components/visuals/dot-engine/dot-story-cells';import type { DotStoryText } from '@/components/visuals/dot-engine/dot-story-player';import { storyCaption } from '@/components/visuals/dot-engine/story-caption';/** * The "Use available metadata" card's pictures, in the brand dot grid: a tag, for what a mapped URL can carry, and * three mapped URLs, two of which gain their title and description while the newest still waits for its own. */// The ring pattern behind the picture already keeps clear of it, so the dots need no halo of their own.export const METADATA_STORY_GRID: DotGrid = { columns: 58, rows: 38, pitch: 10, dotRadius: 3.2, ringStroke: 1, haloRadius: 0 };const { columns: COLUMNS, pitch: PITCH } = METADATA_STORY_GRID;const x = (column: number) => column * PITCH;// Doto sits a third of its size below the middle of the row it is set on.const baselineOn = (row: number, size: number) => (row + 0.5) * PITCH + size / 3;const between = (value: number, from: number, to: number) => value >= from && value <= to;const TAG = { point: { column: 2, row: 19 }, shoulder: 12, right: 30, top: 8, bottom: 30, hole: { column: 10.5, row: 19, radius: 2.1 }, lines: [{ rows: [14, 15], to: 26 }, { rows: [19], to: 27 }, { rows: [22], to: 23 }, { rows: [25], to: 25 }], linesFrom: 16 };// A luggage tag lying on its side, its point and string hole to the left, a title and lines of description on it.const tag = polygon(	[		TAG.point,		{ column: TAG.shoulder, row: TAG.top },		{ column: TAG.right, row: TAG.top },		{ column: TAG.right, row: TAG.bottom },		{ column: TAG.shoulder, row: TAG.bottom },	],	(column, row) => {		const fromHole = Math.hypot(column - TAG.hole.column, row - TAG.hole.row);		if (fromHole <= TAG.hole.radius) return DOT_ABSENT;		if (fromHole <= TAG.hole.radius + 1) return DOT_FILLED;		const line = TAG.lines.find(({ rows }) => rows.includes(row));		if (line && between(column, TAG.linesFrom, line.to)) return line.rows.length > 1 ? DOT_ABSENT : DOT_HOLLOW;		return line?.rows.length === 1 ? DOT_FILLED : solidWithSpeckle(column, row);	});export const TAG_PICTURE = pictureOf(METADATA_STORY_GRID, tag);export const TAG_CAPTION = storyCaption(METADATA_STORY_GRID, 34, 'each URL can carry', 'a title', 'and a description');const CARD = { left: 3, right: 54, rows: 10, tops: [2, 14, 26], tab: 5, body: { left: 12, right: 51, top: 5, bottom: 7 } };const PAGES = [	{ url: 'stripe.com/pricing', title: 'Pricing & fees', description: 'Pay-as-you-go pricing for payments' },	{ url: 'stripe.com/docs/api', title: 'API reference', description: 'Complete reference for the Stripe API' },	{ url: 'stripe.com/sessions/2026', title: '', description: '' },];/** The pages whose title and description are available; the newest has been found but not yet enriched. */export const ENRICHED_COUNT = PAGES.filter(({ title }) => title.length > 0).length;export const cardAt = (row: number) => CARD.tops.findIndex((top) => between(row, top, top + CARD.rows - 1));/** How far along a card's metadata a dot is, from 0 to 1, or -1 if it is not part of it. */export const alongMetadata = (column: number, row: number) => {	const card = cardAt(row);	if (card < 0 || !between(row - CARD.tops[card], CARD.body.top, CARD.body.bottom) || !between(column, CARD.body.left, CARD.body.right)) return -1;	return (column - CARD.body.left) / (CARD.body.right - CARD.body.left);};// Each mapped URL is a card with a solid tab. Its URL is written along the top; below it, a block of rings stands// in for the title and description until they arrive, and clears to make room for them when they do.const cards = (isEnriched: (card: number) => boolean): DotPainter => (column, row) => {	const card = cardAt(row);	if (card < 0 || !between(column, CARD.left, CARD.right)) return DOT_ABSENT;	const down = row - CARD.tops[card];	if (column <= CARD.left + CARD.tab) return between(down, 4, 5) && between(column, CARD.left + 2, CARD.left + 3) ? DOT_HOLLOW : DOT_FILLED;	if (column === CARD.right || down === 0 || down === CARD.rows - 1) return DOT_FILLED;	if (alongMetadata(column, row) < 0) return DOT_ABSENT;	return isEnriched(card) ? DOT_ABSENT : DOT_HOLLOW;};export const CARDS_FOUND = pictureOf(METADATA_STORY_GRID, cards(() => false));export const CARDS_ENRICHED = pictureOf(METADATA_STORY_GRID, cards((card) => card < ENRICHED_COUNT));/** Clears each card's block of rings `enriched[card]` of the way along, from its left. */export function paintEnriched(states: Uint8Array, enriched: number[]) {	for (let cell = 0; cell < states.length; cell++) {		const row = Math.floor(cell / COLUMNS);		const along = alongMetadata(cell % COLUMNS, row);		if (along >= 0 && along <= (enriched[cardAt(row)] ?? 0)) states[cell] = CARDS_ENRICHED.states[cell];	}	return states;}const TEXT_LEFT = x(CARD.body.left);export const CARD_TEXTS = PAGES.map(({ url, title, description }, index) => ({	url: { text: url, x: TEXT_LEFT, y: baselineOn(CARD.tops[index] + 2.5, 13), size: 13, weight: 700, muted: true } satisfies DotStoryText,	status: { text: 'pending', x: x(CARD.right - 1.5), y: baselineOn(CARD.tops[index] + 2.5, 12), size: 12, weight: 700, muted: true, anchor: 'end' } satisfies DotStoryText,	title: { text: title, x: TEXT_LEFT, y: baselineOn(CARD.tops[index] + 5, 16), size: 16, weight: 800 } satisfies DotStoryText,	description: { text: description, x: TEXT_LEFT, y: baselineOn(CARD.tops[index] + 7.3, 12), size: 12, weight: 700, muted: true } satisfies DotStoryText,}));export const enrichedStatus = (status: DotStoryText): DotStoryText => ({ ...status, text: 'enriched', muted: false });/** The URLs, as enriched as they get: what the picture shows before it plays, and instead of playing with reduced motion. */export const METADATA_RESTING = {	...CARDS_ENRICHED,	texts: CARD_TEXTS.flatMap(({ url, status, title, description }, index) => (index < ENRICHED_COUNT ? [url, enrichedStatus(status), title, description] : [url, status])),};