// ハンドレンジ学習（管理者専用）: レンジ表と色・分類クイズ
(function () {
  'use strict';

  const $ = (id) => document.getElementById(id);
  const RANKS = ['A', 'K', 'Q', 'J', 'T', '9', '8', '7', '6', '5', '4', '3', '2'];

  const CATEGORIES = [
    { id: 'navy', label: '8人（強）' },
    { id: 'red', label: '8人（弱）' },
    { id: 'yellow', label: '6〜7人' },
    { id: 'green', label: '4〜5人' },
    { id: 'blue', label: '3人' },
    { id: 'white', label: '2人' },
    { id: 'purple', label: '紫枠' },
    { id: 'gray', label: 'フォールド' },
  ];

  // 全169ハンドの分類（載っていないハンドはフォールド）。紫枠はクイズ上の独立した回答
  const RANGE = {
    AA: 'navy', AKs: 'navy', AQs: 'red', AJs: 'red', ATs: 'red', A9s: 'green', A8s: 'green', A7s: 'green', A6s: 'green', A5s: 'green', A4s: 'green', A3s: 'green', A2s: 'green',
    AKo: 'navy', KK: 'navy', KQs: 'red', KJs: 'yellow', KTs: 'green', K9s: 'green', K8s: 'white', K7s: 'white', K6s: 'white', K5s: 'white', K4s: 'white', K3s: 'white', K2s: 'white',
    AQo: 'red', KQo: 'yellow', QQ: 'navy', QJs: 'yellow', QTs: 'green', Q9s: 'blue', Q8s: 'white', Q7s: 'white', Q6s: 'white', Q5s: 'purple', Q4s: 'purple', Q3s: 'purple', Q2s: 'purple',
    AJo: 'yellow', KJo: 'green', QJo: 'blue', JJ: 'red', JTs: 'yellow', J9s: 'blue', J8s: 'white', J7s: 'white', J6s: 'purple',
    ATo: 'green', KTo: 'blue', QTo: 'white', JTo: 'blue', TT: 'red', T9s: 'green', T8s: 'blue', T7s: 'purple',
    A9o: 'blue', K9o: 'white', Q9o: 'white', J9o: 'white', T9o: 'white', 99: 'red', '98s': 'blue', '97s': 'white', '96s': 'purple',
    A8o: 'white', '98o': 'purple', 88: 'yellow', '87s': 'white', '86s': 'purple',
    A7o: 'white', 77: 'yellow', '76s': 'white', '75s': 'purple',
    A6o: 'purple', 66: 'green', '65s': 'white', '64s': 'purple',
    55: 'green', '54s': 'purple',
    44: 'blue',
    33: 'blue',
    22: 'blue',
  };

  const handAt = (r, c) => (r === c ? RANKS[r] + RANKS[c] : r < c ? RANKS[r] + RANKS[c] + 's' : RANKS[c] + RANKS[r] + 'o');
  const categoryOf = (hand) => RANGE[hand] || 'gray';
  const labelOf = (id) => (CATEGORIES.find((c) => c.id === id) || CATEGORIES[CATEGORIES.length - 1]).label;

  function swatch(id) {
    const s = document.createElement('span');
    s.className = `swatch-dot cat-${id}`;
    return s;
  }

  // ---------- タブ ----------
  function showView(name) {
    $('view-range').hidden = name !== 'range';
    $('view-quiz').hidden = name !== 'quiz';
    for (const b of $('tabs').children) b.classList.toggle('active', b.dataset.view === name);
  }
  $('tabs').addEventListener('click', (e) => {
    const b = e.target.closest('[data-view]');
    if (b) showView(b.dataset.view);
  });

  // ---------- レンジ表 ----------
  for (const c of CATEGORIES) {
    const item = document.createElement('span');
    item.append(swatch(c.id), c.label);
    $('legend').append(item);
  }

  for (let r = 0; r < 13; r++) {
    for (let c = 0; c < 13; c++) {
      const hand = handAt(r, c);
      const cat = categoryOf(hand);
      const b = document.createElement('button');
      b.type = 'button';
      b.className = `range-cell cat-${cat}`;
      b.textContent = hand;
      b.title = `${hand}：${labelOf(cat)}`;
      b.addEventListener('click', () => select(b, hand, cat));
      $('matrix').append(b);
    }
  }

  function select(cell, hand, cat) {
    document.querySelectorAll('.range-cell.selected').forEach((x) => x.classList.remove('selected'));
    cell.classList.add('selected');
    const box = $('selected');
    box.replaceChildren();
    const name = document.createElement('div');
    name.className = 'sel-hand';
    name.textContent = hand;
    const label = document.createElement('div');
    label.className = 'sel-label';
    label.append(swatch(cat), labelOf(cat));
    const note = document.createElement('div');
    note.className = 'hint';
    note.textContent = cat === 'purple' ? '灰色＋紫枠。クイズの答えは「紫枠」です。' : 'このハンドの分類です。';
    box.append(name, label, note);
  }

  $('start-from-range').addEventListener('click', () => {
    showView('quiz');
    startQuiz();
  });

  // ---------- クイズ ----------
  const SUITS = ['hearts', 'clubs', 'diamonds', 'spades'];
  const RANK_FILE = { A: 'ace', K: 'king', Q: 'queen', J: 'jack', T: '10' };
  let quizCount = 10;
  let deck = [];
  let index = 0;
  let correct = 0;
  let answered = 0;
  let locked = false;

  $('count').addEventListener('click', (e) => {
    const b = e.target.closest('[data-count]');
    if (!b) return;
    quizCount = Number(b.dataset.count);
    for (const x of $('count').children) x.classList.toggle('active', x === b);
  });

  function shuffle(a) {
    for (let i = a.length - 1; i > 0; i--) {
      const j = Math.floor(Math.random() * (i + 1));
      [a[i], a[j]] = [a[j], a[i]];
    }
    return a;
  }

  function startQuiz() {
    const pool = [];
    for (let r = 0; r < 13; r++) for (let c = 0; c < 13; c++) pool.push(handAt(r, c));
    deck = shuffle(pool);
    if (quizCount > 0) deck = deck.slice(0, quizCount);
    index = 0;
    correct = 0;
    answered = 0;
    $('start-quiz').textContent = '最初から';
    renderQuestion();
  }

  // スーテッドは同じマーク、それ以外は別々のマーク
  function showCards(hand) {
    const s1 = SUITS[Math.floor(Math.random() * 4)];
    let s2 = s1;
    if (hand[2] !== 's') while (s2 === s1) s2 = SUITS[Math.floor(Math.random() * 4)];
    [hand[0], hand[1]].forEach((rank, i) => {
      const img = $(`card-${i + 1}`);
      const suit = i === 0 ? s1 : s2;
      img.hidden = true;
      img.onload = () => { img.hidden = false; };
      img.onerror = () => { img.hidden = true; };
      img.alt = `${RANK_FILE[rank] || rank} of ${suit}`;
      img.src = `/range/files/cards/${RANK_FILE[rank] || rank}_of_${suit}.png`;
    });
  }

  function updateStats() {
    $('q-score').textContent = `正解 ${correct} / ${answered}`;
    $('q-accuracy').textContent = `正答率 ${answered ? Math.round((correct / answered) * 100) + '%' : '--'}`;
  }

  function renderQuestion() {
    locked = false;
    $('answers').replaceChildren();
    $('feedback').hidden = true;
    $('next-question').disabled = true;
    if (index >= deck.length) return finishQuiz();

    const hand = deck[index];
    $('q-hand').textContent = hand;
    $('q-prompt').textContent = 'このハンドの色・分類は？';
    $('q-count').textContent = `問題 ${index + 1} / ${deck.length}`;
    $('progress-bar').style.width = `${(index / deck.length) * 100}%`;
    updateStats();
    showCards(hand);

    for (const cat of CATEGORIES) {
      const b = document.createElement('button');
      b.type = 'button';
      b.className = 'btn';
      b.dataset.cat = cat.id;
      b.append(swatch(cat.id), cat.label);
      b.addEventListener('click', () => answer(cat.id, b));
      $('answers').append(b);
    }
  }

  function answer(choice, button) {
    if (locked) return;
    locked = true;
    const hand = deck[index];
    const right = categoryOf(hand);
    const ok = choice === right;
    if (ok) correct++;
    answered++;
    for (const b of $('answers').children) {
      if (b.dataset.cat === right) b.classList.add('correct');
      else if (b === button) b.classList.add('wrong');
      b.disabled = true;
    }
    const fb = $('feedback');
    fb.className = `quiz-feedback ${ok ? 'good' : 'bad'}`;
    fb.textContent = `${ok ? '正解！' : '不正解'}　${hand} は「${labelOf(right)}」です。`;
    fb.hidden = false;
    updateStats();
    $('next-question').disabled = false;
  }

  function finishQuiz() {
    $('q-hand').textContent = '終了！';
    $('q-prompt').textContent = `${deck.length}問中 ${correct}問正解（${deck.length ? Math.round((correct / deck.length) * 100) : 0}%）`;
    $('q-count').textContent = '完了';
    $('progress-bar').style.width = '100%';
    $('card-1').hidden = $('card-2').hidden = true;
    const fb = $('feedback');
    fb.className = 'quiz-feedback';
    fb.textContent = '「最初から」で再挑戦できます。';
    fb.hidden = false;
  }

  $('start-quiz').addEventListener('click', startQuiz);
  $('next-question').addEventListener('click', () => {
    index++;
    renderQuestion();
  });
})();