// 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, CATEGORIES, FACING_ACTIONS, handAt, categoryOf, labelOf, facingOf, facingAction } = window.HandRange;

  Fluid.navBar($('nav'), $('large-title'));
  const tabsSeg = Fluid.Segmented($('tabs'));
  Fluid.Segmented($('count'));

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

  // レイズを受けたときの対応の枠（3bet は水色、コールは黄）
  function frameSwatch(id) {
    const s = document.createElement('span');
    s.className = `swatch-dot swatch-frame facing-${id}`;
    return s;
  }

  // ---------- タブ ----------
  function showView(name) {
    $('view-range').hidden = name !== 'range';
    $('view-quiz').hidden = name !== 'quiz';
    for (const b of $('tabs').querySelectorAll('[data-view]')) b.classList.toggle('active', b.dataset.view === name);
    tabsSeg.update();
  }
  $('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);
    $('legend').append(item);
  }
  for (const a of FACING_ACTIONS) {
    const item = document.createElement('span');
    item.append(frameSwatch(a.id), `レイズを受けたら${a.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';
      const facing = facingOf(hand);
      b.className = `range-cell cat-${cat}${facing ? ` facing-${facing}` : ''}`;
      b.textContent = hand;
      b.title = `${hand}：${labelOf(cat)}${facing ? `／レイズを受けたら${facingAction(facing).label}` : ''}`;
      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 = $('selected');
    box.replaceChildren();
    const name = document.createElement('div');
    name.className = 'sel-hand';
    name.textContent = hand;
    const label = document.createElement('div');
    label.className = 'sel-label';
    label.append(swatch(cat), labelOf(cat));
    const facing = facingOf(hand);
    const vs = document.createElement('div');
    vs.className = 'sel-label';
    if (facing) vs.append(frameSwatch(facing), `レイズを受けたら${facingAction(facing).label}`);
    else vs.append('レイズを受けたらフォールド');
    const note = document.createElement('div');
    note.className = 'hint';
    note.textContent =
      (cat === 'gray' ? 'どのポジションからもオープンしない手です。' : `${labelOf(cat)} からオープンできる一番狭い分類です。`) +
      '枠は CO のオープンを BTN で受けたときの対応です。';
    box.append(name, label, vs, 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').querySelectorAll('[data-count]')) 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;
    // 間違えたら選んだボタンが揺れる（振動と同じ瞬間に）
    if (!ok) Fluid.shake(button);
    Fluid.haptic(ok ? 10 : [18, 50, 18]);
    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();
  });
})();