06推定時間値単位切替 — 計算されたビットの値が境界値を過ぎるたびにかかる時間を表す値の単位が変わる方式

<main class="stage">
<div class="ct is-demo" id="ct">
  <label class="ct__field">
    <input class="ct__input" id="ctInput" type="text" autocomplete="off" spellcheck="false" value="">
  </label>
  <div class="ct__readout">
    <span class="ct__time" id="ctTime">即時</span>
  </div>
  <div class="ct__track"><div class="ct__fill" id="ctFill"></div></div>
  <div class="ct__meta">組み合わせ数 <b id="ctGuesses">0</b></div>
</div>
</main>

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

// 계산 겹: 경우의 수(문자 집합 크기^글자 수) ÷ 가정 초당 시도 수(GUESSES_PER_SEC,
// 데모 안 임의 상수)로 초 값을 만들고, log10 스케일로 막대를 채운다.
@include stage($stage-yellow);

.ct {
  width: 100%;
  max-width: 320px;
  display: grid;
  gap: $sp-3;
}

.ct__field { display: block; }

.ct__input {
  width: 100%;
  box-sizing: border-box;
  padding: $sp-3 $sp-4;
  border-radius: $r-control;
  border: 0;
  background: rgba($stage-ink, .08);
  color: $stage-ink;
  font: 500 16px/1.3 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  letter-spacing: .04em;
  -webkit-text-security: disc;

  &:focus { outline: 2px solid $stage-ink; outline-offset: 2px; }
}

.ct__readout {
  display: flex;
  justify-content: center;
}

.ct__time {
  font: 800 26px/1.1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: $stage-ink;
  font-variant-numeric: tabular-nums;
}

.ct__track {
  position: relative;
  height: $sp-3;
  border-radius: $r-sm;
  background: rgba($stage-ink, .1);
  overflow: hidden;
}

.ct__fill {
  position: absolute;
  inset: 0;
  border-radius: $r-sm;
  background: $stage-ink;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform $dur-base $ease-out;
}

.ct__meta {
  font: 600 13px/1.2 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: rgba($stage-ink, .72);
  text-align: center;

  b { color: $stage-ink; font-variant-numeric: tabular-nums; }
}

@media (max-width: 340px) {
  .ct { max-width: 260px; }
  .ct__input { padding: $sp-2 $sp-3; font-size: 14px; }
  .ct__time { font-size: 21px; }
  .ct__meta { font-size: 11px; }
}

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

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);
}

.ct {
  width: 100%;
  max-width: 320px;
  display: grid;
  gap: 12px;
}

.ct__field {
  display: block;
}

.ct__input {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 16px;
  border-radius: 12px;
  border: 0;
  background: rgba(23, 20, 26, 0.08);
  color: #17141a;
  font: 500 16px/1.3 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  letter-spacing: 0.04em;
  -webkit-text-security: disc;
}
.ct__input:focus {
  outline: 2px solid #17141a;
  outline-offset: 2px;
}

.ct__readout {
  display: flex;
  justify-content: center;
}

.ct__time {
  font: 800 26px/1.1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #17141a;
  font-variant-numeric: tabular-nums;
}

.ct__track {
  position: relative;
  height: 12px;
  border-radius: 8px;
  background: rgba(23, 20, 26, 0.1);
  overflow: hidden;
}

.ct__fill {
  position: absolute;
  inset: 0;
  border-radius: 8px;
  background: #17141a;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 300ms ease-out;
}

.ct__meta {
  font: 600 13px/1.2 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: rgba(23, 20, 26, 0.72);
  text-align: center;
}
.ct__meta b {
  color: #17141a;
  font-variant-numeric: tabular-nums;
}

@media (max-width: 340px) {
  .ct {
    max-width: 260px;
  }
  .ct__input {
    padding: 8px 12px;
    font-size: 14px;
  }
  .ct__time {
    font-size: 21px;
  }
  .ct__meta {
    font-size: 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ct__fill {
    transition: none;
  }
}

(function () {
  var root = document.getElementById('ct');
  var input = document.getElementById('ctInput');
  var timeEl = document.getElementById('ctTime');
  var fill = document.getElementById('ctFill');
  var guessesEl = document.getElementById('ctGuesses');

  // 가정값: 데모 안 임의 상수 — 실제 하드웨어·연도·연구 인용이 아니다.
  var GUESSES_PER_SEC = 1e6;
  var LOG_MAX = 12; // 막대 눈금 상한(秒 단위 log10) — 이 値 이상은 꽉 찬 막대

  function charsetSize(value) {
    var size = 0;
    if (/[a-z]/.test(value)) size += 26;
    if (/[A-Z]/.test(value)) size += 26;
    if (/[0-9]/.test(value)) size += 10;
    if (/[^A-Za-z0-9]/.test(value)) size += 32;
    return size;
  }

  // 계산 겹: 文字集合 크기의 文字数 제곱으로 경우의 수를 구하고, 가정 초당
  // 시도 수로 나눠 秒 값을 만든 뒤, 자리 단위(秒→分→時間→日→年→世紀)로 변환한다.
  function guessesOf(value) {
    var size = charsetSize(value);
    if (!value.length || size === 0) return 0;
    return Math.pow(size, value.length);
  }

  var UNITS = [
    { at: 1, name: '秒' },
    { at: 60, name: '分', div: 60 },
    { at: 3600, name: '時間', div: 3600 },
    { at: 86400, name: '日', div: 86400 },
    { at: 31536000, name: '年', div: 31536000 },
    { at: 31536000 * 100, name: '世紀', div: 31536000 * 100 }
  ];

  function formatTime(seconds) {
    if (seconds < 1) return '即時';
    var pick = UNITS[0];
    for (var i = 0; i < UNITS.length; i++) if (seconds >= UNITS[i].at) pick = UNITS[i];
    var div = pick.div || 1;
    var n = seconds / div;
    var text = n >= 100 ? Math.round(n).toLocaleString() : (Math.round(n * 10) / 10).toString();
    return '約 ' + text + pick.name;
  }

  function paint(value) {
    var guesses = guessesOf(value);
    var seconds = guesses / GUESSES_PER_SEC;
    timeEl.textContent = formatTime(seconds);
    var mag = seconds < 1 ? 0 : Math.log(seconds + 1) / Math.LN10;
    fill.style.transform = 'scaleX(' + Math.max(0, Math.min(1, mag / LOG_MAX)) + ')';
    guessesEl.textContent = guesses >= 1e6 ? guesses.toExponential(1) : Math.round(guesses).toLocaleString();
  }

  input.addEventListener('input', function () {
    root.classList.remove('is-demo');
    stopAutoplay();
    paint(input.value);
  });

  paint(input.value);

  // 자동 루프: 시드 고정 문자열 배열로 길이·문자 종류를 함께 늘렸다 줄인다.
  var SEQ = ['', 'ab', 'abcd12', 'abcd12EF', 'abcd12EF!@', 'abcd12EF!@#$xy',
             'abcd12EF!@', 'abcd12EF', 'abcd12', 'ab', ''];
  var si = 0;
  var autoTimer = null;
  function autoTick() { input.value = SEQ[si]; paint(SEQ[si]); si = (si + 1) % SEQ.length; }
  function stopAutoplay() { if (autoTimer) { clearInterval(autoTimer); autoTimer = null; } }
  var reduce = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  if (!reduce) { autoTimer = setInterval(autoTick, 380); autoTick(); }
})();

import { useEffect, useRef } from "react";
import styles from "./CrackTimeEstimate.module.scss";

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

// 가정값: 데모 안 임의 상수 — 실제 하드웨어·연도·연구 인용이 아니다.
const GUESSES_PER_SEC = 1e6;
const LOG_MAX = 12;

type Unit = { at: number; name: string; div?: number };
const UNITS: Unit[] = [
  { at: 1, name: "초" },
  { at: 60, name: "분", div: 60 },
  { at: 3600, name: "시간", div: 3600 },
  { at: 86400, name: "일", div: 86400 },
  { at: 31536000, name: "년", div: 31536000 },
  { at: 31536000 * 100, name: "세기", div: 31536000 * 100 },
];

export default function CrackTimeEstimate() {
  const rootRef = useRef(null) as unknown as Box<HTMLDivElement | null>;

  useEffect(() => {
    const root = rootRef.current;
    if (!root) return;
    const input = root.querySelector(`.${styles.input}`) as HTMLInputElement | null;
    const timeEl = root.querySelector(`.${styles.time}`) as HTMLElement | null;
    const fill = root.querySelector(`.${styles.fill}`) as HTMLElement | null;
    const guessesEl = root.querySelector(`.${styles.guesses}`) as HTMLElement | null;
    if (!input || !timeEl || !fill || !guessesEl) return;

    function charsetSize(value: string) {
      let size = 0;
      if (/[a-z]/.test(value)) size += 26;
      if (/[A-Z]/.test(value)) size += 26;
      if (/[0-9]/.test(value)) size += 10;
      if (/[^A-Za-z0-9]/.test(value)) size += 32;
      return size;
    }

    // 계산 겹: 문자 집합 크기의 글자 수 제곱으로 경우의 수를 구하고, 가정 초당
    // 시도 수로 나눠 초 값을 만든 뒤, 자리 단위(초→분→시간→일→년→세기)로 변환한다.
    function guessesOf(value: string) {
      const size = charsetSize(value);
      if (!value.length || size === 0) return 0;
      return Math.pow(size, value.length);
    }

    function formatTime(seconds: number) {
      if (seconds < 1) return "즉시";
      let pick = UNITS[0];
      for (let i = 0; i < UNITS.length; i++) if (seconds >= UNITS[i].at) pick = UNITS[i];
      const div = pick.div || 1;
      const n = seconds / div;
      const text = n >= 100 ? Math.round(n).toLocaleString() : (Math.round(n * 10) / 10).toString();
      return "약 " + text + pick.name;
    }

    function paint(value: string) {
      const guesses = guessesOf(value);
      const seconds = guesses / GUESSES_PER_SEC;
      timeEl!.textContent = formatTime(seconds);
      const mag = seconds < 1 ? 0 : Math.log(seconds + 1) / Math.LN10;
      fill!.style.transform = "scaleX(" + Math.max(0, Math.min(1, mag / LOG_MAX)) + ")";
      guessesEl!.textContent = guesses >= 1e6 ? guesses.toExponential(1) : Math.round(guesses).toLocaleString();
    }

    function onInput() {
      root!.classList.remove(styles["is-demo"]);
      stopAutoplay();
      paint(input!.value);
    }
    input.addEventListener("input", onInput);
    paint(input.value);

    // 자동 루프: 시드 고정 문자열 배열로 길이·문자 종류를 함께 늘렸다 줄인다.
    const SEQ = ["", "ab", "abcd12", "abcd12EF", "abcd12EF!@", "abcd12EF!@#$xy",
      "abcd12EF!@", "abcd12EF", "abcd12", "ab", ""];
    let si = 0;
    let autoTimer: number | null = null;
    function autoTick() { input!.value = SEQ[si]; paint(SEQ[si]); si = (si + 1) % SEQ.length; }
    function stopAutoplay() { if (autoTimer !== null) { window.clearInterval(autoTimer); autoTimer = null; } }
    const reduce = window.matchMedia("(prefers-reduced-motion: reduce)").matches;
    if (!reduce) { autoTimer = window.setInterval(autoTick, 380); autoTick(); }

    return () => {
      stopAutoplay();
      input.removeEventListener("input", onInput);
    };
  }, []);

  return (
    <div ref={rootRef} className={`${styles.stage} ${styles.ct} ${styles["is-demo"]}`}>
      <label className={styles.field}>
        <input className={styles.input} type="text" autoComplete="off" spellCheck={false} defaultValue="" />
      </label>
      <div className={styles.readout}>
        <span className={styles.time}>즉시</span>
      </div>
      <div className={styles.track}><div className={styles.fill} /></div>
      <div className={styles.meta}>경우의 수 <b className={styles.guesses}>0</b></div>
    </div>
  );
}