05Repeat/sequence penalty — the strength value drops by an amount tied to a run of the same character or a sequential digit value

<main class="stage">
<div class="rs is-demo" id="rs">
  <label class="rs__field">
    <input class="rs__input" id="rsInput" type="text" autocomplete="off" spellcheck="false" value="">
  </label>
  <div class="rs__chips" id="rsChips"></div>
  <div class="rs__track"><div class="rs__fill" id="rsFill"></div></div>
  <div class="rs__row">
    <span class="rs__score">Value <b id="rsScore">0</b>/100</span>
    <span class="rs__warn" id="rsWarn">Repeat/sequence <b id="rsPenalty">-0</b></span>
  </div>
</div>
</main>

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

// 계산 겹: 같은 글자 3연속(반복) 또는 문자코드 증감 1씩 3연속(연속)을 찾아
// 그 글자 수만큼 고정 감점을 기본 점수(길이×8)에서 뺀다.
@include stage($stage-ink);

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

.rs__field { display: block; }

.rs__input {
  width: 100%;
  box-sizing: border-box;
  padding: $sp-3 $sp-4;
  border-radius: $r-control;
  border: 0;
  background: rgba($stage-paper, .12);
  color: $subject-cream;
  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 $subject-blue-light; outline-offset: 2px; }
}

.rs__chips {
  display: flex;
  flex-wrap: wrap;
  gap: $sp-1;
  min-height: $sp-4;
}

.rs__chip {
  width: $sp-3;
  height: $sp-3;
  border-radius: $r-xs;
  background: rgba($stage-paper, .28);
  transform: scale(1);
  transition: background-color $dur-base $ease-out, transform $dur-base $ease-out;
}

.rs__chip--on {
  background: $error;
  transform: scale(1.15);
}

.rs__track {
  position: relative;
  height: $sp-3;
  border-radius: $r-sm;
  background: rgba($stage-paper, .14);
  overflow: hidden;
}

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

.rs--hit .rs__fill { background: $tick-down; }

.rs__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: $sp-2;
  font: 600 13px/1.2 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: $stage-paper;
}

.rs__score b { font-variant-numeric: tabular-nums; }

.rs__warn {
  color: $tick-down;
  opacity: 0;
  transform: scale(.7);
  transform-origin: right center;
  transition: opacity $dur-base $ease-out, transform $dur-base $ease-out;
}

@media (max-width: 340px) {
  .rs { max-width: 260px; }
  .rs__input { padding: $sp-2 $sp-3; font-size: 14px; }
  .rs__row { font-size: 11px; }
}

@media (prefers-reduced-motion: reduce) {
  .rs__fill, .rs__warn, .rs__chip { transition: none; }
}

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);
}

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

.rs__field {
  display: block;
}

.rs__input {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 16px;
  border-radius: 12px;
  border: 0;
  background: rgba(255, 255, 255, 0.12);
  color: #fff7e6;
  font: 500 16px/1.3 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  letter-spacing: 0.04em;
  -webkit-text-security: disc;
}
.rs__input:focus {
  outline: 2px solid #5b8cf8;
  outline-offset: 2px;
}

.rs__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  min-height: 16px;
}

.rs__chip {
  width: 12px;
  height: 12px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.28);
  transform: scale(1);
  transition: background-color 300ms ease-out, transform 300ms ease-out;
}

.rs__chip--on {
  background: #c2361a;
  transform: scale(1.15);
}

.rs__track {
  position: relative;
  height: 12px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
  overflow: hidden;
}

.rs__fill {
  position: absolute;
  inset: 0;
  border-radius: 8px;
  background: #5b8cf8;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 300ms ease-out;
}

.rs--hit .rs__fill {
  background: #ff7a5e;
}

.rs__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font: 600 13px/1.2 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #ffffff;
}

.rs__score b {
  font-variant-numeric: tabular-nums;
}

.rs__warn {
  color: #ff7a5e;
  opacity: 0;
  transform: scale(0.7);
  transform-origin: right center;
  transition: opacity 300ms ease-out, transform 300ms ease-out;
}

@media (max-width: 340px) {
  .rs {
    max-width: 260px;
  }
  .rs__input {
    padding: 8px 12px;
    font-size: 14px;
  }
  .rs__row {
    font-size: 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .rs__fill, .rs__warn, .rs__chip {
    transition: none;
  }
}

(function () {
  var root = document.getElementById('rs');
  var input = document.getElementById('rsInput');
  var chipsBox = document.getElementById('rsChips');
  var fill = document.getElementById('rsFill');
  var scoreEl = document.getElementById('rsScore');
  var warn = document.getElementById('rsWarn');
  var penaltyEl = document.getElementById('rsPenalty');
  var PER_CHAR_PENALTY = 8;

  // 계산 겹: 같은 글자 3연속(반복) 또는 문자코드가 1씩 오르내리는 3연속(연속)을
  // 찾아 그 위치들을 표시하고, 표시된 Length × 감점값을 기본 점수에서 뺀다.
  function flagPositions(value) {
    var n = value.length;
    var flag = new Array(n).fill(false);
    var i = 0;
    while (i < n) {
      var j = i;
      while (j + 1 < n && value.charCodeAt(j + 1) === value.charCodeAt(j)) j++;
      if (j - i + 1 >= 3) for (var k = i; k <= j; k++) flag[k] = true;
      i = j + 1;
    }
    i = 0;
    while (i < n - 1) {
      var dir = value.charCodeAt(i + 1) - value.charCodeAt(i);
      if (dir === 1 || dir === -1) {
        var j2 = i + 1;
        while (j2 + 1 < n && value.charCodeAt(j2 + 1) - value.charCodeAt(j2) === dir) j2++;
        if (j2 - i + 1 >= 3) for (var k2 = i; k2 <= j2; k2++) flag[k2] = true;
        i = j2;
      } else {
        i++;
      }
    }
    return flag;
  }

  function scoreOf(value) {
    var base = Math.min(100, value.length * 8);
    var flag = flagPositions(value);
    var hitCount = flag.filter(Boolean).length;
    var penalty = hitCount * PER_CHAR_PENALTY;
    var score = Math.max(0, base - penalty);
    return { score: score, flag: flag, penalty: penalty };
  }

  function paint(value) {
    var r = scoreOf(value);
    fill.style.transform = 'scaleX(' + (r.score / 100) + ')';
    root.classList.toggle('rs--hit', r.penalty > 0);
    scoreEl.textContent = String(r.score);
    penaltyEl.textContent = '-' + r.penalty;
    warn.style.opacity = r.penalty > 0 ? '1' : '0';
    warn.style.transform = r.penalty > 0 ? 'scale(1)' : 'scale(.7)';

    chipsBox.innerHTML = '';
    for (var i = 0; i < value.length; i++) {
      var chip = document.createElement('span');
      chip.className = 'rs__chip' + (r.flag[i] ? ' rs__chip--on' : '');
      chipsBox.appendChild(chip);
    }
  }

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

  paint(input.value);

  // 자동 루프: 시드 고정 문자열 배열 — Repeat/sequence 구간이 있는 값과 없는 값을 번갈아 입력한다.
  var SEQ = ['', 'q7Kd', 'aaaKd9', '12345Kd', 'abcdKf3', 'q7mR2z', 'aaa123', ''];
  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 "./RepeatSequencePenalty.module.scss";

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

const PER_CHAR_PENALTY = 8;

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

  useEffect(() => {
    const root = rootRef.current;
    if (!root) return;
    const input = root.querySelector(`.${styles.input}`) as HTMLInputElement | null;
    const chipsBox = root.querySelector(`.${styles.chips}`) as HTMLElement | null;
    const fill = root.querySelector(`.${styles.fill}`) as HTMLElement | null;
    const scoreEl = root.querySelector(`.${styles.scoreNum}`) as HTMLElement | null;
    const warn = root.querySelector(`.${styles.warn}`) as HTMLElement | null;
    const penaltyEl = root.querySelector(`.${styles.penaltyNum}`) as HTMLElement | null;
    if (!input || !chipsBox || !fill || !scoreEl || !warn || !penaltyEl) return;

    // 계산 겹: 같은 글자 3연속(반복) 또는 문자코드 증감 1씩 3연속(연속)을 찾아
    // 그 위치들을 표시하고, 표시된 글자 수 × 감점값을 기본 점수에서 뺀다.
    function flagPositions(value: string) {
      const n = value.length;
      const flag = new Array(n).fill(false);
      let i = 0;
      while (i < n) {
        let j = i;
        while (j + 1 < n && value.charCodeAt(j + 1) === value.charCodeAt(j)) j++;
        if (j - i + 1 >= 3) for (let k = i; k <= j; k++) flag[k] = true;
        i = j + 1;
      }
      i = 0;
      while (i < n - 1) {
        const dir = value.charCodeAt(i + 1) - value.charCodeAt(i);
        if (dir === 1 || dir === -1) {
          let j2 = i + 1;
          while (j2 + 1 < n && value.charCodeAt(j2 + 1) - value.charCodeAt(j2) === dir) j2++;
          if (j2 - i + 1 >= 3) for (let k2 = i; k2 <= j2; k2++) flag[k2] = true;
          i = j2;
        } else {
          i++;
        }
      }
      return flag as boolean[];
    }

    function scoreOf(value: string) {
      const base = Math.min(100, value.length * 8);
      const flag = flagPositions(value);
      const hitCount = flag.filter(Boolean).length;
      const penalty = hitCount * PER_CHAR_PENALTY;
      const score = Math.max(0, base - penalty);
      return { score, flag, penalty };
    }

    function paint(value: string) {
      const r = scoreOf(value);
      fill!.style.transform = "scaleX(" + r.score / 100 + ")";
      root!.classList.toggle(styles["rs--hit"], r.penalty > 0);
      scoreEl!.textContent = String(r.score);
      penaltyEl!.textContent = "-" + r.penalty;
      warn!.style.opacity = r.penalty > 0 ? "1" : "0";
      warn!.style.transform = r.penalty > 0 ? "scale(1)" : "scale(.7)";

      chipsBox!.innerHTML = "";
      for (let i = 0; i < value.length; i++) {
        const chip = document.createElement("span");
        chip.className = styles.chip + (r.flag[i] ? " " + styles["chip--on"] : "");
        chipsBox!.appendChild(chip);
      }
    }

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

    // 자동 루프: 시드 고정 문자열 배열 — 반복·연속 구간이 있는 값과 없는 값을 번갈아 입력한다.
    const SEQ = ["", "q7Kd", "aaaKd9", "12345Kd", "abcdKf3", "q7mR2z", "aaa123", ""];
    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.rs} ${styles["is-demo"]}`}>
      <label className={styles.field}>
        <input className={styles.input} type="text" autoComplete="off" spellCheck={false} defaultValue="" />
      </label>
      <div className={styles.chips} />
      <div className={styles.track}><div className={styles.fill} /></div>
      <div className={styles.row}>
        <span className={styles.score}>값 <b className={styles.scoreNum}>0</b>/100</span>
        <span className={styles.warn}>반복·연속 <b className={styles.penaltyNum}>-0</b></span>
      </div>
    </div>
  );
}