06読み込みから結果へ変わるトースト

<main class="stage">
  <div class="pm is-demo">
    <div class="pm__card" id="pm-card" data-state="load" role="status" aria-live="polite" aria-busy="true">
      <span class="pm__slot" aria-hidden="true">
        <span class="pm__face" data-state="load">
          <span class="pm__spin"><svg viewBox="0 0 256 256" width="30" height="30"><g fill="currentColor"><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2"/><path d="M232 128a104 104 0 0 1-208 0c0-41 23.81-78.36 60.66-95.27a8 8 0 0 1 6.68 14.54C60.15 61.59 40 93.27 40 128a88 88 0 0 0 176 0c0-34.73-20.15-66.41-51.34-80.73a8 8 0 0 1 6.68-14.54C208.19 49.64 232 87 232 128"/></g></svg></span>
        </span>
        <span class="pm__face" data-state="ok">
          <svg viewBox="0 0 256 256" width="30" height="30"><g fill="currentColor"><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2"/><path d="M173.66 98.34a8 8 0 0 1 0 11.32l-56 56a8 8 0 0 1-11.32 0l-24-24a8 8 0 0 1 11.32-11.32L112 148.69l50.34-50.35a8 8 0 0 1 11.32 0M232 128A104 104 0 1 1 128 24a104.11 104.11 0 0 1 104 104m-16 0a88 88 0 1 0-88 88a88.1 88.1 0 0 0 88-88"/></g></svg>
        </span>
        <span class="pm__face" data-state="bad">
          <svg viewBox="0 0 256 256" width="30" height="30"><g fill="currentColor"><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2"/><path d="M165.66 101.66L139.31 128l26.35 26.34a8 8 0 0 1-11.32 11.32L128 139.31l-26.34 26.35a8 8 0 0 1-11.32-11.32L116.69 128l-26.35-26.34a8 8 0 0 1 11.32-11.32L128 116.69l26.34-26.35a8 8 0 0 1 11.32 11.32M232 128A104 104 0 1 1 128 24a104.11 104.11 0 0 1 104 104m-16 0a88 88 0 1 0-88 88a88.1 88.1 0 0 0 88-88"/></g></svg>
        </span>
      </span>
      <span class="pm__txt">
        <span class="pm__words">
          <span class="pm__word" data-state="load">アップロード中です</span>
          <span class="pm__word" data-state="ok">アップロードが完了しました</span>
          <span class="pm__word" data-state="bad">アップロードが途切れました</span>
        </span>
        <span class="pm__sub">写真12枚 · 34MB</span>
      </span>
    </div>
    <button class="pm__go" type="button" id="pm-go">もう一度アップロード</button>
  </div>
</main>

@use "../../../../site/static/demo-tokens" as *;

$duration: $dur-quick;
$easing: $ease-pop;
$color: $subject-sky;

@include stage($stage-yellow);

.pm {
  box-sizing: border-box;
  width: min(392px, 88vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: $sp-3;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: $subject-ink;
}

.pm__card {
  box-sizing: border-box;
  width: 100%;
  display: flex;
  align-items: center;
  gap: $sp-4;
  padding: $sp-3 $sp-4;
  border-radius: $r-card;
  background: $subject-ink;
  color: $subject-cream;
  box-shadow: $shadow-raised;
}

// 아이콘 자리는 한 칸뿐이다 — 세 얼굴이 같은 자리에 겹쳐 있고 한 프레임에 갈린다
.pm__slot {
  position: relative;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
}
.pm__face {
  position: absolute;
  left: 0;
  top: 0;
  display: block;
  opacity: 0;
}
.pm__face svg { display: block; }
.pm__face[data-state="load"] { color: $color; }
.pm__face[data-state="ok"]   { color: $subject-mint; }
.pm__face[data-state="bad"]  { color: $stage-orange; }
.pm__spin { display: block; }

.pm__txt { display: flex; flex-direction: column; flex: 1 1 auto; min-width: 0; }
.pm__words {
  position: relative;
  display: block;
  height: 20px;
}
.pm__word {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  display: block;
  opacity: 0;
  font-size: 14px;
  line-height: 20px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.pm__sub {
  font-size: 11px;
  line-height: 16px;
  font-weight: 500;
  color: rgba(255, 247, 230, .56);
}

.pm__go {
  box-sizing: border-box;
  margin: 0;
  padding: $sp-2 $sp-4;
  border: 2px solid $subject-ink;
  border-radius: $r-pill;
  background: transparent;
  color: $subject-ink;
  font-family: inherit;
  font-size: 12px;
  line-height: 18px;
  font-weight: 700;
  cursor: pointer;
}
.pm__go:focus-visible { outline: 2px solid $subject-ink; outline-offset: 2px; }

// 사람이 누른 뒤: data-state 하나가 아이콘과 문구를 동시에 정한다
.pm:not(.is-demo) .pm__card[data-state="load"] .pm__face[data-state="load"],
.pm:not(.is-demo) .pm__card[data-state="ok"]   .pm__face[data-state="ok"],
.pm:not(.is-demo) .pm__card[data-state="bad"]  .pm__face[data-state="bad"] { opacity: 1; }
.pm:not(.is-demo) .pm__card[data-state="load"] .pm__word[data-state="load"],
.pm:not(.is-demo) .pm__card[data-state="ok"]   .pm__word[data-state="ok"],
.pm:not(.is-demo) .pm__card[data-state="bad"]  .pm__word[data-state="bad"] { opacity: 1; }

// 기다리는 고리는 늘 돈다 — 상태가 바뀌어도 같은 자리에서 결과 아이콘으로 갈릴 뿐이다
.pm__spin {
  animation-name: pm-spin;
  animation-duration: 1s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}
@keyframes pm-spin {
  0%   { rotate: 0deg; }
  100% { rotate: 360deg; }
}

// ── 자동 루프: 기다림 → 성공 → 기다림 → 실패. 갈리는 지점은 24장 샘플 사이에 두고 steps(1, end) 로 끊는다 ──
.pm.is-demo .pm__face,
.pm.is-demo .pm__word {
  animation-duration: $dur-loop;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}
.pm.is-demo .pm__face[data-state="load"],
.pm.is-demo .pm__word[data-state="load"] { animation-name: pm-load; }
.pm.is-demo .pm__face[data-state="ok"],
.pm.is-demo .pm__word[data-state="ok"] { animation-name: pm-ok; }
.pm.is-demo .pm__face[data-state="bad"],
.pm.is-demo .pm__word[data-state="bad"] { animation-name: pm-bad; }

@keyframes pm-load {
  0%   { opacity: 1; }
  35%  { opacity: 0; }
  56%  { opacity: 1; }
  77%  { opacity: 0; }
  89%  { opacity: 1; }
  100% { opacity: 1; }
}
@keyframes pm-ok {
  0%   { opacity: 0; }
  35%  { opacity: 1; }
  56%  { opacity: 0; }
  100% { opacity: 0; }
}
@keyframes pm-bad {
  0%   { opacity: 0; }
  77%  { opacity: 1; }
  89%  { opacity: 0; }
  100% { opacity: 0; }
}

@media (max-width: 340px) {
  .pm { gap: $sp-2; }
  .pm__card { gap: $sp-3; padding: $sp-2 $sp-3; }
  .pm__slot { width: 24px; height: 24px; }
  .pm__face svg { width: 24px; height: 24px; }
  .pm__words { height: 18px; }
  .pm__word { font-size: 12px; line-height: 18px; }
  .pm__sub { font-size: 10px; line-height: 14px; }
  .pm__go { padding: $sp-1 $sp-3; font-size: 11px; line-height: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .pm__spin,
  .pm.is-demo .pm__face,
  .pm.is-demo .pm__word { animation: none !important; }
  .pm.is-demo .pm__face[data-state="load"] { opacity: 1; }
  .pm.is-demo .pm__word[data-state="load"] { opacity: 1; }
}

html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.pm {
  box-sizing: border-box;
  width: min(392px, 88vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #17141a;
}

.pm__card {
  box-sizing: border-box;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  border-radius: 16px;
  background: #17141a;
  color: #fff7e6;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.pm__slot {
  position: relative;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
}

.pm__face {
  position: absolute;
  left: 0;
  top: 0;
  display: block;
  opacity: 0;
}

.pm__face svg {
  display: block;
}

.pm__face[data-state=load] {
  color: #6ec8ff;
}

.pm__face[data-state=ok] {
  color: #4cd4a6;
}

.pm__face[data-state=bad] {
  color: #ff4d1f;
}

.pm__spin {
  display: block;
}

.pm__txt {
  display: flex;
  flex-direction: column;
  flex: 1 1 auto;
  min-width: 0;
}

.pm__words {
  position: relative;
  display: block;
  height: 20px;
}

.pm__word {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  display: block;
  opacity: 0;
  font-size: 14px;
  line-height: 20px;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pm__sub {
  font-size: 11px;
  line-height: 16px;
  font-weight: 500;
  color: rgba(255, 247, 230, 0.56);
}

.pm__go {
  box-sizing: border-box;
  margin: 0;
  padding: 8px 16px;
  border: 2px solid #17141a;
  border-radius: 999px;
  background: transparent;
  color: #17141a;
  font-family: inherit;
  font-size: 12px;
  line-height: 18px;
  font-weight: 700;
  cursor: pointer;
}

.pm__go:focus-visible {
  outline: 2px solid #17141a;
  outline-offset: 2px;
}

.pm:not(.is-demo) .pm__card[data-state=load] .pm__face[data-state=load],
.pm:not(.is-demo) .pm__card[data-state=ok] .pm__face[data-state=ok],
.pm:not(.is-demo) .pm__card[data-state=bad] .pm__face[data-state=bad] {
  opacity: 1;
}

.pm:not(.is-demo) .pm__card[data-state=load] .pm__word[data-state=load],
.pm:not(.is-demo) .pm__card[data-state=ok] .pm__word[data-state=ok],
.pm:not(.is-demo) .pm__card[data-state=bad] .pm__word[data-state=bad] {
  opacity: 1;
}

.pm__spin {
  animation-name: pm-spin;
  animation-duration: 1s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
}

@keyframes pm-spin {
  0% {
    rotate: 0deg;
  }
  100% {
    rotate: 360deg;
  }
}
.pm.is-demo .pm__face,
.pm.is-demo .pm__word {
  animation-duration: 2s;
  animation-timing-function: steps(1, end);
  animation-iteration-count: infinite;
}

.pm.is-demo .pm__face[data-state=load],
.pm.is-demo .pm__word[data-state=load] {
  animation-name: pm-load;
}

.pm.is-demo .pm__face[data-state=ok],
.pm.is-demo .pm__word[data-state=ok] {
  animation-name: pm-ok;
}

.pm.is-demo .pm__face[data-state=bad],
.pm.is-demo .pm__word[data-state=bad] {
  animation-name: pm-bad;
}

@keyframes pm-load {
  0% {
    opacity: 1;
  }
  35% {
    opacity: 0;
  }
  56% {
    opacity: 1;
  }
  77% {
    opacity: 0;
  }
  89% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes pm-ok {
  0% {
    opacity: 0;
  }
  35% {
    opacity: 1;
  }
  56% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@keyframes pm-bad {
  0% {
    opacity: 0;
  }
  77% {
    opacity: 1;
  }
  89% {
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}
@media (max-width: 340px) {
  .pm {
    gap: 8px;
  }
  .pm__card {
    gap: 12px;
    padding: 8px 12px;
  }
  .pm__slot {
    width: 24px;
    height: 24px;
  }
  .pm__face svg {
    width: 24px;
    height: 24px;
  }
  .pm__words {
    height: 18px;
  }
  .pm__word {
    font-size: 12px;
    line-height: 18px;
  }
  .pm__sub {
    font-size: 10px;
    line-height: 14px;
  }
  .pm__go {
    padding: 4px 12px;
    font-size: 11px;
    line-height: 16px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .pm__spin,
  .pm.is-demo .pm__face,
  .pm.is-demo .pm__word {
    animation: none !important;
  }
  .pm.is-demo .pm__face[data-state=load] {
    opacity: 1;
  }
  .pm.is-demo .pm__word[data-state=load] {
    opacity: 1;
  }
}

// 실제 동작: 카드는 그대로 두고 상태만 바꾼다. 기다리는 동안은 aria-busy 로 알리고, 끝나면 成功·실패를 번갈아 준다
var root = document.querySelector('.pm');
var card = document.getElementById('pm-card');
var timer = 0, turn = 0;
function set(state) {
  card.setAttribute('data-state', state);
  card.setAttribute('aria-busy', state === 'load' ? 'true' : 'false');
}
document.getElementById('pm-go').addEventListener('click', function () {
  root.classList.remove('is-demo');
  set('load');
  clearTimeout(timer);
  timer = setTimeout(function () { set(turn++ % 2 ? 'bad' : 'ok'); }, 1500);
});

import { useEffect, useRef, useState } from "react";
import type { CSSProperties } from "react";
import styles from "./PromiseToast.module.scss";

export type PromiseState = "load" | "ok" | "bad";
export type PromiseToastProps = {
  words?: Record<PromiseState, string>;
  sub?: string;
  goLabel?: string;
  wait?: number;
  easing?: string;
  color?: string;
};

type Vars = CSSProperties & { "--easing"?: string; "--color"?: string };
const ORDER: PromiseState[] = ["load", "ok", "bad"];

const ICON: Record<PromiseState, any> = {
  load: <g fill="currentColor"><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2" /><path d="M232 128a104 104 0 0 1-208 0c0-41 23.81-78.36 60.66-95.27a8 8 0 0 1 6.68 14.54C60.15 61.59 40 93.27 40 128a88 88 0 0 0 176 0c0-34.73-20.15-66.41-51.34-80.73a8 8 0 0 1 6.68-14.54C208.19 49.64 232 87 232 128" /></g>,
  ok: <g fill="currentColor"><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2" /><path d="M173.66 98.34a8 8 0 0 1 0 11.32l-56 56a8 8 0 0 1-11.32 0l-24-24a8 8 0 0 1 11.32-11.32L112 148.69l50.34-50.35a8 8 0 0 1 11.32 0M232 128A104 104 0 1 1 128 24a104.11 104.11 0 0 1 104 104m-16 0a88 88 0 1 0-88 88a88.1 88.1 0 0 0 88-88" /></g>,
  bad: <g fill="currentColor"><path d="M224 128a96 96 0 1 1-96-96a96 96 0 0 1 96 96" opacity=".2" /><path d="M165.66 101.66L139.31 128l26.35 26.34a8 8 0 0 1-11.32 11.32L128 139.31l-26.34 26.35a8 8 0 0 1-11.32-11.32L116.69 128l-26.35-26.34a8 8 0 0 1 11.32-11.32L128 116.69l26.34-26.35a8 8 0 0 1 11.32 11.32M232 128A104 104 0 1 1 128 24a104.11 104.11 0 0 1 104 104m-16 0a88 88 0 1 0-88 88a88.1 88.1 0 0 0 88-88" /></g>,
};

export default function PromiseToast({
  words = { load: "Uploading", ok: "Upload finished", bad: "Upload dropped" },
  sub = "12 photos · 34MB",
  goLabel = "Upload again",
  wait = 1500,
  easing = "cubic-bezier(.2,1.4,.4,1)",
  color = "#6ec8ff",
}: PromiseToastProps) {
  const [demo, setDemo] = useState(true);
  const [state, setState] = useState<PromiseState>("load");
  const turn = useRef<number[]>([0]);
  const timer = useRef<number[]>([0]);
  const vars: Vars = { "--easing": easing, "--color": color };

  useEffect(() => () => { clearTimeout((timer.current ?? [0])[0]); }, []);

  function start() {
    setDemo(false);
    setState("load");
    const t = timer.current ?? [0];
    const n = turn.current ?? [0];
    clearTimeout(t[0]);
    t[0] = setTimeout(() => { setState(n[0]++ % 2 ? "bad" : "ok"); }, wait) as unknown as number;
  }

  return (
    <div className={`${styles.pm} ${demo ? styles.isDemo : ""}`} style={vars}>
      <div className={styles.card} data-state={state} role="status" aria-live="polite" aria-busy={state === "load"}>
        <span className={styles.slot} aria-hidden="true">
          {ORDER.map((s) => (
            <span key={s} className={styles.face} data-state={s} data-on={!demo && s === state ? "1" : "0"}>
              {s === "load"
                ? <span className={styles.spin}><svg viewBox="0 0 256 256" width="30" height="30">{ICON[s]}</svg></span>
                : <svg viewBox="0 0 256 256" width="30" height="30">{ICON[s]}</svg>}
            </span>
          ))}
        </span>
        <span className={styles.txt}>
          <span className={styles.words}>
            {ORDER.map((s) => (
              <span key={s} className={styles.word} data-state={s} data-on={!demo && s === state ? "1" : "0"}>{words[s]}</span>
            ))}
          </span>
          <span className={styles.sub}>{sub}</span>
        </span>
      </div>
      <button className={styles.go} type="button" onClick={start}>{goLabel}</button>
    </div>
  );
}