(function () {
  'use strict';

  var grid = document.getElementById('board-grid');
  var emptyMsg = document.getElementById('empty-msg');
  var modalOverlay = document.getElementById('config-modal');
  var configForm = document.getElementById('config-form');
  var editingBoard = null;

  function esc(s) {
    if (typeof s !== 'string') return '';
    var d = document.createElement('div');
    d.appendChild(document.createTextNode(s));
    return d.innerHTML;
  }

  // ---- Fetch boards ----
  function fetchBoards() {
    fetch('/api/boards')
      .then(function (r) { return r.json(); })
      .then(function (boards) { renderBoards(boards); })
      .catch(function () {});
  }

  // ---- Render board cards ----
  function renderBoards(boards) {
    if (boards.length === 0) {
      emptyMsg.style.display = 'block';
      grid.innerHTML = '';
      grid.appendChild(emptyMsg);
      return;
    }
    emptyMsg.style.display = 'none';

    var sorted = boards.slice().sort(function (a, b) {
      var na = (a.display_name || '').toLowerCase();
      var nb = (b.display_name || '').toLowerCase();
      return na.localeCompare(nb);
    });

    var html = '';
    sorted.forEach(function (board) {
      var statusClass = board.online ? 'online' : 'offline';
      var badgeClass = board.online ? 'badge-online' : 'badge-offline';
      var left = board.config && board.config.left || {};
      var right = board.config && board.config.right || {};
      var scores = board.scores || {};
      var leftScore = scores.left != null ? scores.left : '-';
      var rightScore = scores.right != null ? scores.right : '-';
      var leftColor = left.color || '#dc2626';
      var rightColor = right.color || '#2563eb';

      html +=
        '<div class="card ' + statusClass + ' p-4" data-board="' + board.ip + '">' +
          '<div class="flex items-center justify-between mb-3">' +
            '<div class="flex items-center gap-2">' +
              '<span class="' + badgeClass + '"></span>' +
              '<span class="font-semibold text-base">' + esc(board.display_name || board.ip) + '</span>' +
              '<span class="text-xs text-slate-600">' + board.ip + '</span>' +
            '</div>' +
          '</div>' +

          '<div class="flex gap-4">' +
            // Left team
            '<div class="flex-1 bg-black/20 rounded-lg p-3 text-center team-column"' +
              ' style="border-left: 3px solid ' + leftColor + ';" data-side="left">' +
              '<div class="team-name text-sm mb-1" style="color:' + leftColor + ';">' + esc(left.name || '???') + '</div>' +
              '<div class="score text-3xl font-black mb-2" style="color:' + leftColor + ';">' + leftScore + '</div>' +
              '<div class="flex gap-1 justify-center">' +
                '<button class="btn btn-dec" data-side="left">−1</button>' +
                '<button class="btn btn-inc" data-side="left">+1</button>' +
                '<button class="btn btn-reset" data-side="left">↺</button>' +
              '</div>' +
            '</div>' +
            // Right team
            '<div class="flex-1 bg-black/20 rounded-lg p-3 text-center team-column"' +
              ' style="border-right: 3px solid ' + rightColor + ';" data-side="right">' +
              '<div class="team-name text-sm mb-1" style="color:' + rightColor + ';">' + esc(right.name || '???') + '</div>' +
              '<div class="score text-3xl font-black mb-2" style="color:' + rightColor + ';">' + rightScore + '</div>' +
              '<div class="flex gap-1 justify-center">' +
                '<button class="btn btn-dec" data-side="right">−1</button>' +
                '<button class="btn btn-inc" data-side="right">+1</button>' +
                '<button class="btn btn-reset" data-side="right">↺</button>' +
              '</div>' +
            '</div>' +
          '</div>' +

          '<div class="flex gap-2 mt-3">' +
            '<button class="btn btn-edit flex-1" onclick="window.openConfig(\'' + board.ip + '\')">⚙ Edit Config</button>' +
            '<button class="btn btn-all-reset flex-1">⟳ Reset All</button>' +
          '</div>' +
        '</div>';
    });
    grid.innerHTML = html;
  }

  // ---- Optimistic score updates ----
  function updateScoreLocal(card, side, delta) {
    var col = card.querySelector('.team-column[data-side="' + side + '"]');
    if (!col) return;
    var el = col.querySelector('.score');
    if (!el) return;
    var cur = parseInt(el.textContent);
    if (isNaN(cur)) return;
    var next = Math.max(0, cur + delta);
    el.textContent = next;
  }

  function setScoreLocal(card, side, value) {
    var col = card.querySelector('.team-column[data-side="' + side + '"]');
    if (!col) return;
    var el = col.querySelector('.score');
    if (!el) return;
    el.textContent = value;
  }

  // ---- Re-poll single board directly (bypasses controller cache) ----
  function refetchBoard(ip) {
    fetch('/api/boards/' + ip + '/api/status')
      .then(function (r) { return r.json(); })
      .then(function (data) {
        var card = document.querySelector('.card[data-board="' + ip + '"]');
        if (!card) return;
        var scores = data.scores || {};
        var leftEl = card.querySelector('.team-column[data-side="left"] .score');
        var rightEl = card.querySelector('.team-column[data-side="right"] .score');
        if (leftEl) leftEl.textContent = scores.left != null ? scores.left : '-';
        if (rightEl) rightEl.textContent = scores.right != null ? scores.right : '-';
      })
      .catch(function () {});
  }

  // ---- Actions (optimistic + re-poll board directly) ----
  function increment(ip, side, card) {
    updateScoreLocal(card, side, 1);
    fetch('/api/boards/' + ip + '/api/score/' + side + '/increment', { method: 'POST' }).then(function () { refetchBoard(ip); }).catch(function () {});
  }

  function decrement(ip, side, card) {
    updateScoreLocal(card, side, -1);
    fetch('/api/boards/' + ip + '/api/score/' + side + '/decrement', { method: 'POST' }).then(function () { refetchBoard(ip); }).catch(function () {});
  }

  function resetSide(ip, side, card) {
    setScoreLocal(card, side, 0);
    fetch('/api/boards/' + ip + '/api/score/' + side + '/reset', { method: 'POST' }).then(function () { refetchBoard(ip); }).catch(function () {});
  }

  function resetAll(ip, card) {
    setScoreLocal(card, 'left', 0);
    setScoreLocal(card, 'right', 0);
    fetch('/api/boards/' + ip + '/api/score/reset', { method: 'POST' }).then(function () { refetchBoard(ip); }).catch(function () {});
  }

  function scanNetwork() {
    fetch('/api/scan', { method: 'POST' }).catch(function () {});
  }

  // ---- Event delegation ----
  grid.addEventListener('click', function (e) {
    var btn = e.target.closest('button');
    if (!btn) return;

    var card = btn.closest('.card');
    if (!card) return;
    var ip = card.dataset.board;
    if (!ip) return;

    var side = btn.dataset.side;

    if (btn.classList.contains('btn-inc') && side) {
      increment(ip, side, card);
    } else if (btn.classList.contains('btn-dec') && side) {
      decrement(ip, side, card);
    } else if (btn.classList.contains('btn-reset') && side) {
      resetSide(ip, side, card);
    } else if (btn.classList.contains('btn-all-reset')) {
      resetAll(ip, card);
    }
  });

  // ---- Edit Config Modal ----
  window.openConfig = function (ip) {
    editingBoard = ip;
    document.getElementById('modal-title').textContent = 'Edit Config — ' + ip;

    fetch('/api/boards/' + ip + '/api/status')
      .then(function (r) { return r.json(); })
      .then(function (data) {
        var cfg = data.config || {};
        document.getElementById('edit-display-name').value = data.display_name || '';
        document.getElementById('edit-display-id').value = data.display_id != null ? data.display_id : '';
        document.getElementById('edit-header').value = data.header || '';
        document.getElementById('edit-header-font-size').value = data.header_font_size || '';
        document.getElementById('edit-content-padding-top').value = data.content_padding_top || '';
        document.getElementById('edit-content-gap').value = data.content_gap || '';
        document.getElementById('edit-left-name').value = (cfg.left && cfg.left.name) || '';
        document.getElementById('edit-left-subtitle').value = (cfg.left && cfg.left.subtitle) || '';
        document.getElementById('edit-left-color').value = (cfg.left && cfg.left.color) || '#dc2626';
        document.getElementById('edit-left-font-size').value = (cfg.left && cfg.left.name_font_size) || '';
        document.getElementById('edit-left-subtitle-font-size').value = (cfg.left && cfg.left.subtitle_font_size) || '';
        document.getElementById('edit-left-score-font-size').value = (cfg.left && cfg.left.score_font_size) || '';
        document.getElementById('edit-right-name').value = (cfg.right && cfg.right.name) || '';
        document.getElementById('edit-right-subtitle').value = (cfg.right && cfg.right.subtitle) || '';
        document.getElementById('edit-right-color').value = (cfg.right && cfg.right.color) || '#2563eb';
        document.getElementById('edit-right-font-size').value = (cfg.right && cfg.right.name_font_size) || '';
        document.getElementById('edit-right-subtitle-font-size').value = (cfg.right && cfg.right.subtitle_font_size) || '';
        document.getElementById('edit-right-score-font-size').value = (cfg.right && cfg.right.score_font_size) || '';
        modalOverlay.classList.add('open');
      })
      .catch(function () { alert('Could not fetch board config'); });
  };

  function closeModal() {
    modalOverlay.classList.remove('open');
    editingBoard = null;
  }
  window.closeModal = closeModal;

  configForm.addEventListener('submit', function (e) {
    e.preventDefault();
    if (!editingBoard) return;

    var payload = {
      display_name: document.getElementById('edit-display-name').value,
      header: document.getElementById('edit-header').value,
      header_font_size: parseFloat(document.getElementById('edit-header-font-size').value) || 0,
      content_padding_top: parseFloat(document.getElementById('edit-content-padding-top').value) || 0,
      content_gap: parseFloat(document.getElementById('edit-content-gap').value) || 1,
      left: {
        name: document.getElementById('edit-left-name').value,
        subtitle: document.getElementById('edit-left-subtitle').value,
        color: document.getElementById('edit-left-color').value,
        name_font_size: parseFloat(document.getElementById('edit-left-font-size').value) || 0,
        subtitle_font_size: parseFloat(document.getElementById('edit-left-subtitle-font-size').value) || 0,
        score_font_size: parseFloat(document.getElementById('edit-left-score-font-size').value) || 0,
      },
      right: {
        name: document.getElementById('edit-right-name').value,
        subtitle: document.getElementById('edit-right-subtitle').value,
        color: document.getElementById('edit-right-color').value,
        name_font_size: parseFloat(document.getElementById('edit-right-font-size').value) || 0,
        subtitle_font_size: parseFloat(document.getElementById('edit-right-subtitle-font-size').value) || 0,
        score_font_size: parseFloat(document.getElementById('edit-right-score-font-size').value) || 0,
      },
    };

    var did = parseInt(document.getElementById('edit-display-id').value, 10);
    if (!isNaN(did) && did > 0) payload.display_id = did;

    var saveBtn = configForm.querySelector('.btn-save');
    saveBtn.textContent = 'Saving...';
    saveBtn.disabled = true;

    fetch('/api/boards/' + editingBoard + '/api/config', {
      method: 'PUT',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(payload),
    })
      .then(function (r) {
        if (r.ok) closeModal();
        else alert('Failed to save config');
      })
      .catch(function () { alert('Failed to save config'); })
      .finally(function () {
        saveBtn.textContent = 'Save Config';
        saveBtn.disabled = false;
      });
  });

  modalOverlay.addEventListener('click', function (e) {
    if (e.target === modalOverlay) closeModal();
  });

  // ---- Conflicts (F9) ----
  function showConflicts() {
    fetch('/api/conflicts')
      .then(function (r) { return r.json(); })
      .then(function (list) {
        var summary = document.getElementById('conflicts-summary');
        var listEl = document.getElementById('conflicts-list');
        listEl.innerHTML = '';
        if (!list || list.length === 0) {
          summary.textContent = 'No display ID conflicts detected.';
          listEl.innerHTML = '<p class="text-sm text-slate-500">Every discovered board has a unique display_id.</p>';
        } else {
          summary.textContent = list.length + ' conflicted display ID' + (list.length > 1 ? 's' : '') +
            '. Give each board a unique display_id to fix (use Edit).';
          list.forEach(function (conflict) {
            var box = document.createElement('div');
            box.className = 'card p-4 mb-3';
            var html = '<div class="font-semibold mb-2">display_id ' + esc(String(conflict.display_id)) + '</div>';
            (conflict.boards || []).forEach(function (b) {
              html += '<div class="flex items-center justify-between py-1" style="border-top:1px solid #1e1e30;">' +
                '<div><span class="text-xs text-slate-600">' + esc(b.ip) + '</span>' +
                '<span class="ml-2">' + esc(b.display_name || '?') + '</span></div>' +
                '<button class="btn btn-edit" onclick="window.openConfig(\'' + esc(b.ip) + '\')">⚙ Edit</button>' +
                '</div>';
            });
            box.innerHTML = html;
            listEl.appendChild(box);
          });
        }
        document.getElementById('conflicts-modal').classList.add('open');
      })
      .catch(function () { alert('Could not fetch conflicts'); });
  }

  window.closeConflicts = function () {
    document.getElementById('conflicts-modal').classList.remove('open');
  };

  document.getElementById('conflicts-modal').addEventListener('click', function (e) {
    if (e.target === document.getElementById('conflicts-modal')) window.closeConflicts();
  });

  document.addEventListener('keydown', function (e) {
    if (e.key === 'F9') {
      e.preventDefault();
      showConflicts();
    }
  });

  // ---- Polling ----
  fetchBoards();
  setInterval(fetchBoards, 3000);

  window.scanNetwork = scanNetwork;

})();