05No-Show Countdown Whose Gauge Depletes Toward a Recall

<main class="stage">
<div class="wrc is-demo" id="wrcRoot">
  <div class="wrc__panel" id="wrcPanel">
    <span class="wrc__ticket" id="wrcTicket" aria-hidden="true">No. 201</span>
    <span class="wrc__badge" id="wrcBadge" aria-hidden="true">Waiting</span>
    <div class="wrc__track" aria-hidden="true"><div class="wrc__gauge" id="wrcGauge"></div></div>
    <span class="wrc__sec" id="wrcSec" aria-hidden="true">60 sec left</span>
  </div>
  <p class="wrc__status" id="wrcStatus" aria-live="polite"></p>
  <div class="wrc__controls">
    <button type="button" class="wrc__btn wrc__btn--primary" id="wrcCheckin">Checked in</button>
    <button type="button" class="wrc__btn" id="wrcReset">Reset</button>
  </div>
</div>
</main>

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

// 핵심: 호출 시점부터 지난 시간을 매 프레임 다시 계산해 게이지 폭을 비율로 줄인다.
// 비율이 0 에 닿는 순간을 계산해 배지·색을 바꾸고 짧은 흔들림을 한 번 재생한다.

@include stage($stage-ink);

.wrc {
  position: relative;
  display: grid;
  gap: $sp-3;
  justify-items: center;
  width: min(90vw, 300px);
}

.wrc__panel {
  display: grid;
  gap: $sp-2;
  justify-items: center;
  width: 100%;
  padding: $sp-4;
  border-radius: $r-card;
  background: rgba($stage-paper, .06);
}

.wrc__ticket {
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: $stage-paper;
}

.wrc__badge {
  font-size: 11px;
  font-weight: 700;
  padding: $sp-1 $sp-2;
  border-radius: $r-pill;
  color: $subject-blue-light;
  background: rgba($subject-blue-light, .16);
}

.wrc__badge.is-expired {
  color: $tick-down;
  background: rgba($tick-down, .18);
}

.wrc__track {
  width: 100%;
  height: 10px;
  border-radius: $r-pill;
  background: rgba($stage-paper, .16);
  overflow: hidden;
}

.wrc__gauge {
  height: 100%;
  width: 100%;
  border-radius: $r-pill;
  background: $subject-blue-light;
}

.wrc__gauge.is-warn { background: $tick-down; }
.wrc__gauge.is-expired { background: $tick-down; width: 0% !important; }

.wrc__sec {
  font-size: 11px;
  font-weight: 600;
  color: rgba($stage-paper, .6);
}

.wrc__status {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  color: rgba($stage-paper, .7);
}

.wrc__controls {
  display: flex;
  gap: $sp-2;
}

.wrc__btn {
  border: 1px solid rgba($stage-paper, .3);
  background: transparent;
  color: $stage-paper;
  border-radius: $r-control;
  padding: $sp-2 $sp-4;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.wrc__btn--primary {
  background: $subject-blue-deep;
  border-color: $subject-blue-deep;
  color: $stage-paper;
}

.wrc__btn:focus-visible {
  outline: 2px solid $subject-blue-light;
  outline-offset: 2px;
}

@media (max-width: 340px) {
  .wrc__ticket { font-size: 22px; }
  .wrc__panel { padding: $sp-3; }
}

@media (prefers-reduced-motion: reduce) {
  .wrc__gauge { transition: none; }
}

@media (max-height: 240px) {
  .wrc { gap: $sp-2; }
  .wrc__status { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .wrc__btn { padding-top: $sp-1; padding-bottom: $sp-1; }
}

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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.wrc {
  position: relative;
  display: grid;
  gap: 12px;
  justify-items: center;
  width: min(90vw, 300px);
}

.wrc__panel {
  display: grid;
  gap: 8px;
  justify-items: center;
  width: 100%;
  padding: 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.06);
}

.wrc__ticket {
  font-size: 28px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: #ffffff;
}

.wrc__badge {
  font-size: 11px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 999px;
  color: #5b8cf8;
  background: rgba(91, 140, 248, 0.16);
}

.wrc__badge.is-expired {
  color: #ff7a5e;
  background: rgba(255, 122, 94, 0.18);
}

.wrc__track {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.16);
  overflow: hidden;
}

.wrc__gauge {
  height: 100%;
  width: 100%;
  border-radius: 999px;
  background: #5b8cf8;
}

.wrc__gauge.is-warn {
  background: #ff7a5e;
}

.wrc__gauge.is-expired {
  background: #ff7a5e;
  width: 0% !important;
}

.wrc__sec {
  font-size: 11px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.6);
}

.wrc__status {
  margin: 0;
  font-size: 11px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
}

.wrc__controls {
  display: flex;
  gap: 8px;
}

.wrc__btn {
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  color: #ffffff;
  border-radius: 12px;
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.wrc__btn--primary {
  background: #0a4fe8;
  border-color: #0a4fe8;
  color: #ffffff;
}

.wrc__btn:focus-visible {
  outline: 2px solid #5b8cf8;
  outline-offset: 2px;
}

@media (max-width: 340px) {
  .wrc__ticket {
    font-size: 22px;
  }
  .wrc__panel {
    padding: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .wrc__gauge {
    transition: none;
  }
}
@media (max-height: 240px) {
  .wrc {
    gap: 8px;
  }
  .wrc__status {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
  }
  .wrc__btn {
    padding-top: 4px;
    padding-bottom: 4px;
  }
}

(function () {
  // 기법: 번호가 호출된 시점(가상 시계 시작점)부터 지금까지 지난 시간을 계산해 Left: 비율만큼
  // 게이지 바 width 를 줄인다. 비율이 0 에 닿으면 만료로 계산해 배지를 바꾸고 흔들림을 한  
  // 계산해 재생한다. RECALL_COUNTDOWN_SEC 초 동안 진행되며, Date 없이 rAF 타임스탬프만 쓴다.
  var RECALL_COUNTDOWN_SEC = 60;
  var SHAKE_DURATION_MS = 380;

  var root = document.getElementById('wrcRoot');
  var panel = document.getElementById('wrcPanel');
  var ticketEl = document.getElementById('wrcTicket');
  var badgeEl = document.getElementById('wrcBadge');
  var gaugeEl = document.getElementById('wrcGauge');
  var secEl = document.getElementById('wrcSec');
  var status = document.getElementById('wrcStatus');

  var reduce = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  if (reduce) root.classList.remove('is-demo');

  var CALL_BASE = 201;
  var ticketIndex = 0;
  var callStartMs = 0;
  var expired = false;
  var shaken = false;

  function ticketNum() { return CALL_BASE + ticketIndex; }

  function paintGauge(ratio) {
    gaugeEl.style.width = (ratio * 100).toFixed(1) + '%';
    gaugeEl.classList.toggle('is-warn', ratio <= 0.34 && ratio > 0);
    gaugeEl.classList.toggle('is-expired', ratio <= 0);
  }

  function shake() {
    if (reduce) return;
    panel.animate(
      [
        { transform: 'translateX(0px)' },
        { transform: 'translateX(-6px)' },
        { transform: 'translateX(6px)' },
        { transform: 'translateX(-4px)' },
        { transform: 'translateX(4px)' },
        { transform: 'translateX(0px)' }
      ],
      { duration: SHAKE_DURATION_MS, easing: 'ease-out' }
    );
  }

  function startTicket(nowMs) {
    ticketEl.textContent = ticketNum() + ' ';
    badgeEl.textContent = 'Waiting';
    badgeEl.classList.remove('is-expired');
    callStartMs = nowMs;
    expired = false;
    shaken = false;
    paintGauge(1);
    secEl.textContent = RECALL_COUNTDOWN_SEC + 's left';
    status.textContent = ticketNum() + ' called · ' + RECALL_COUNTDOWN_SEC + 's to check in.';
  }

  function checkin(nowMs) {
    status.textContent = ticketNum() + ' checked in.';
    ticketIndex += 1;
    startTicket(nowMs);
  }

  function resetAll(nowMs) {
    ticketIndex = 0;
    startTicket(nowMs);
    status.textContent = ticketNum() + ' called · ' + RECALL_COUNTDOWN_SEC + 's to check in.';
  }

  function stepGauge(nowMs) {
    var elapsedS = (nowMs - callStartMs) / 1000;
    var ratio = Math.max(0, 1 - elapsedS / RECALL_COUNTDOWN_SEC);
    paintGauge(ratio);
    var remainSec = Math.max(0, Math.ceil(RECALL_COUNTDOWN_SEC - elapsedS));
    secEl.textContent = remainSec + 's left';
    if (ratio <= 0 && !expired) {
      expired = true;
      badgeEl.textContent = 'Expired · re-call needed';
      badgeEl.classList.add('is-expired');
      status.textContent = ticketNum() + ' expired · please call again.';
      if (!shaken) { shaken = true; shake(); }
    }
  }

  var checkinBtn = document.getElementById('wrcCheckin');
  var resetBtn = document.getElementById('wrcReset');

  function onCheckin() { root.classList.remove('is-demo'); checkin(perfNow()); }
  function onReset() { root.classList.remove('is-demo'); resetAll(perfNow()); }

  checkinBtn.addEventListener('click', onCheckin);
  checkinBtn.addEventListener('keydown', function (e) {
    if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); onCheckin(); }
  });
  resetBtn.addEventListener('click', onReset);
  resetBtn.addEventListener('keydown', function (e) {
    if (e.key === 'Enter' || e.key === ' ') { e.preventDefault(); onReset(); }
  });

  var t0 = null;
  function perfNow() { return t0 === null ? 0 : performance.now() - t0; }

  // 데모 압축: 실제 60초 대신 시연에서는 흐름을 빠르게 계산해 보여준다(시계 자체는 여전히
  // rAF 경과 시간 기반 — DEMO_TIME_SCALE 만큼 가속해 같은 비율 계산식을 통과시킨다).
  // 렌더 캡처가 2 초뿐이라 60초 카운트다운을 1.5 초 안에 다 보이도록 40 배로 압축한다.
  var DEMO_TIME_SCALE = 40;

  function tick(ts) {
    if (t0 === null) t0 = ts;
    var now = ts - t0;
    if (!reduce) {
      var demoNow = root.classList.contains('is-demo') ? callStartMs + (now - callStartMs) * DEMO_TIME_SCALE : now;
      stepGauge(demoNow);
      if (root.classList.contains('is-demo') && expired) {
        checkin(now);
      }
    }
    requestAnimationFrame(tick);
  }

  startTicket(0);
  requestAnimationFrame(tick);
})();

// WaitingQueueNoshowRecallCountdown — vanilla 판(05-waiting-queue-noshow-recall-countdown) 의 React 포트.
// 호출 시점부터 지난 시간을 매 프레임 다시 계산해 남은 비율만큼 게이지 width 를 줄이고,
// 비율 0 도달을 계산해 배지를 만료로 바꾸고 흔들림을 한 번 재생한다. Date 없이 rAF 시간만 쓴다.
import { useEffect, useRef, useState } from "react";
import styles from "./WaitingQueueNoshowRecallCountdown.module.scss";

type Box<T> = { current: T };

const RECALL_COUNTDOWN_SEC = 60;
const SHAKE_DURATION_MS = 380;
const CALL_BASE = 201;
const DEMO_TIME_SCALE = 40;

export default function WaitingQueueNoshowRecallCountdown() {
  const [ticketText, setTicketText] = useState(CALL_BASE + "번");
  const [badgeText, setBadgeText] = useState("대기중");
  const [expired, setExpired] = useState(false);
  const [warn, setWarn] = useState(false);
  const [gaugeW, setGaugeW] = useState(100);
  const [secText, setSecText] = useState(RECALL_COUNTDOWN_SEC + "초 남음");
  const [status, setStatus] = useState("");
  const [reduce, setReduce] = useState(false);
  const panelRef = useRef<HTMLDivElement | null>(null) as Box<HTMLDivElement | null>;
  const rootRef = useRef<HTMLDivElement | null>(null) as Box<HTMLDivElement | null>;
  const ticketIndexRef = useRef<number>(0) as Box<number>;
  const callStartRef = useRef<number>(0) as Box<number>;
  const expiredRef = useRef<boolean>(false) as Box<boolean>;
  const shakenRef = useRef<boolean>(false) as Box<boolean>;
  const demoRef = useRef<boolean>(true) as Box<boolean>;
  const t0Ref = useRef<number>(0) as Box<number>;
  const frameRef = useRef<number>(0) as Box<number>;

  useEffect(() => {
    setReduce(window.matchMedia("(prefers-reduced-motion: reduce)").matches);
  }, []);

  function ticketNum(): number { return CALL_BASE + ticketIndexRef.current; }

  function shake(): void {
    if (reduce) return;
    const panel = panelRef.current;
    if (!panel) return;
    panel.animate(
      [
        { transform: "translateX(0px)" },
        { transform: "translateX(-6px)" },
        { transform: "translateX(6px)" },
        { transform: "translateX(-4px)" },
        { transform: "translateX(4px)" },
        { transform: "translateX(0px)" }
      ],
      { duration: SHAKE_DURATION_MS, easing: "ease-out" }
    );
  }

  function startTicket(nowMs: number): void {
    setTicketText(ticketNum() + "번");
    setBadgeText("대기중");
    setExpired(false);
    setWarn(false);
    callStartRef.current = nowMs;
    expiredRef.current = false;
    shakenRef.current = false;
    setGaugeW(100);
    setSecText(RECALL_COUNTDOWN_SEC + "초 남음");
    setStatus(ticketNum() + "번 호출 · " + RECALL_COUNTDOWN_SEC + "초 안에 확인해주세요.");
  }

  function checkin(nowMs: number): void {
    setStatus(ticketNum() + "번 확인 완료.");
    ticketIndexRef.current += 1;
    startTicket(nowMs);
  }

  function resetAll(nowMs: number): void {
    ticketIndexRef.current = 0;
    startTicket(nowMs);
    setStatus(ticketNum() + "번 호출 · " + RECALL_COUNTDOWN_SEC + "초 안에 확인해주세요.");
  }

  function stepGauge(nowMs: number): void {
    const elapsedS = (nowMs - callStartRef.current) / 1000;
    const ratio = Math.max(0, 1 - elapsedS / RECALL_COUNTDOWN_SEC);
    setGaugeW(Math.round(ratio * 1000) / 10);
    setWarn(ratio <= 0.34 && ratio > 0);
    if (ratio <= 0 && !expiredRef.current) setExpired(true);
    const remainSec = Math.max(0, Math.ceil(RECALL_COUNTDOWN_SEC - elapsedS));
    setSecText(remainSec + "초 남음");
    if (ratio <= 0 && !expiredRef.current) {
      expiredRef.current = true;
      setBadgeText("만료 · 재호출 필요");
      setStatus(ticketNum() + "번 시간 만료 · 재호출이 필요합니다.");
      if (!shakenRef.current) { shakenRef.current = true; shake(); }
    }
  }

  function stopDemo(): void { demoRef.current = false; }

  useEffect(() => {
    startTicket(0);
    function tick(ts: number): void {
      if (t0Ref.current === 0) t0Ref.current = ts;
      const now = ts - t0Ref.current;
      if (!reduce) {
        const inDemo = demoRef.current;
        const demoNow = inDemo ? callStartRef.current + (now - callStartRef.current) * DEMO_TIME_SCALE : now;
        stepGauge(demoNow);
        if (inDemo && expiredRef.current) {
          checkin(now);
        }
      }
      frameRef.current = requestAnimationFrame(tick);
    }
    frameRef.current = requestAnimationFrame(tick);
    return () => cancelAnimationFrame(frameRef.current);
    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [reduce]);

  function onCheckin(): void { stopDemo(); checkin(perfNow()); }
  function onReset(): void { stopDemo(); resetAll(perfNow()); }

  function perfNow(): number { return t0Ref.current === 0 ? 0 : performance.now() - t0Ref.current; }

  function onKeyDown(e: { key: string; preventDefault: () => void }, fn: () => void): void {
    if (e.key === "Enter" || e.key === " ") { e.preventDefault(); fn(); }
  }

  const badgeClass = [styles.badge, expired ? styles.badgeExpired : ""].join(" ").trim();
  const gaugeClass = [styles.gauge, warn ? styles.gaugeWarn : "", expired ? styles.gaugeExpired : ""].join(" ").trim();
  const rootClass = [styles.wrc, reduce ? "" : "is-demo"].join(" ").trim();

  return (
    <main className={styles.stage}>
      <div className={rootClass} ref={rootRef}>
        <div className={styles.panel} ref={panelRef}>
          <span className={styles.ticket} aria-hidden="true">{ticketText}</span>
          <span className={badgeClass} aria-hidden="true">{badgeText}</span>
          <div className={styles.track} aria-hidden="true"><div className={gaugeClass} style={{ width: gaugeW + "%" }} /></div>
          <span className={styles.sec} aria-hidden="true">{secText}</span>
        </div>
        <p className={styles.status} aria-live="polite">{status}</p>
        <div className={styles.controls}>
          <button type="button" className={[styles.btn, styles.btnPrimary].join(" ")} onClick={onCheckin} onKeyDown={(e: { key: string; preventDefault: () => void }) => onKeyDown(e, onCheckin)}>확인 완료</button>
          <button type="button" className={styles.btn} onClick={onReset} onKeyDown={(e: { key: string; preventDefault: () => void }) => onKeyDown(e, onReset)}>초기화</button>
        </div>
      </div>
    </main>
  );
}