(function () {
  'use strict';

  const { Store, esc, chips } = App;
  const nameInput = document.getElementById('name');
  const nameError = document.getElementById('name-error');
  const listEl = document.getElementById('list');
  const countEl = document.getElementById('count');

  nameInput.value = Store.name;
  nameInput.addEventListener('input', () => {
    Store.name = nameInput.value.trim();
    nameInput.classList.remove('invalid');
    nameError.textContent = '';
  });

  function requireName() {
    if (Store.name) return true;
    nameInput.classList.add('invalid');
    nameError.textContent = '先に名前を入力してください。';
    nameInput.focus();
    return false;
  }

  document.getElementById('create').addEventListener('click', () => {
    if (requireName()) location.href = '/create';
  });

  listEl.addEventListener('click', (e) => {
    const btn = e.target.closest('[data-join]');
    if (btn && requireName()) location.href = '/table/' + encodeURIComponent(btn.dataset.join);
  });

  function phaseBadge(t) {
    if (t.paused) return '<span class="badge paused">PAUSED</span>';
    if (t.phase === 'WAITING') return '<span class="badge">WAITING</span>';
    return '<span class="badge live">PLAYING</span>';
  }

  function render(tables) {
    countEl.textContent = tables.length ? `${tables.length} テーブル` : '';
    if (!tables.length) {
      listEl.innerHTML = '<div class="empty">開催中のテーブルはありません。<br>テーブルを作成して友達を招待しよう。</div>';
      return;
    }
    listEl.innerHTML = tables
      .map((t) => {
        const full = t.playerCount >= t.maxSeats;
        const timer = t.timerEnabled ? `⏱ ${t.intervalMin}分` : '⏱ なし';
        return `
          <div class="table-item">
            <div class="info">
              <div class="name">${esc(t.name)}${phaseBadge(t)}</div>
              <div class="meta">
                <span>👤 <b>${t.playerCount}/${t.maxSeats}</b></span>
                <span>開始 <b>${chips(t.startingStack)}</b></span>
                <span class="gold">Lv.${t.level} <b class="gold">${chips(t.smallBlind)}/${chips(t.bigBlind)}</b></span>
                <span>${timer}</span>
              </div>
            </div>
            <button class="btn btn-blue btn-sm" data-join="${esc(t.id)}" ${full ? 'title="満席（観戦のみ）"' : ''}>
              ${full ? '観戦' : '参加'}
            </button>
          </div>`;
      })
      .join('');
  }

  const socket = App.connectSocket();
  socket.on('connect', () => socket.emit('lobby:subscribe'));
  socket.on('lobby:tables', render);
})();