var hazardData = null;
var hazardID = null;
var expandedCards = {};
var addedSections = {};
var cardWidths = {};

var HAZARD_SECTIONS = [
  {
    id: 'core', label: 'Core', always: true,
    fields: [
      ['name', 'Name', 'text', 'toxic gas'],
      ['description', 'Description', 'textarea', 'A cloud of toxic gas fills the room.', 'wide'],
      ['warn_message', 'Warn Message', 'text', 'The air grows thick with toxic fumes...', 'wide'],
      ['hit_message', 'Hit Message', 'text', 'You cough and choke on the toxic gas!'],
      ['miss_message', 'Miss Message', 'text', 'You hold your breath and avoid the fumes.'],
      ['required_item', 'Required Item', 'text', 'e.g. gas_mask'],
      ['speed', 'Speed', 'number', '10', 'narrow'],
    ]
  },
  {
    id: 'combat', label: 'Combat',
    detect: function(d) { return d.attack_type || d.attack || d.attack_bonus || d.max_hit; },
    fields: [
      ['attack_type', 'Attack Type', 'select', 'stab|slash|crush|ranged|science'],
      ['attack', 'Attack', 'number', '5', 'narrow'],
      ['attack_bonus', 'Attack Bonus', 'number', '0', 'narrow'],
      ['max_hit', 'Max Hit', 'number', '3', 'narrow'],
    ]
  }
];

function initHazardEditor() {
  editorType = 'hazards';
  editorFields = [];
  loadList();
  if (window.location.hash) loadHazardEditor(window.location.hash.substring(1));
}

function cardPath(sec) { return sec.path || ''; }

function getVal(data, sec, key) {
  return ced_getVal(data, sec, key);
}

function fieldID(sec, key, idx) {
  return ced_fieldID(sec, key, idx);
}

function setupSearchFields() { ced_setupSearchFields(); }

function collectFieldValue(el, type) { return ced_collectFieldValue(el, type); }

function loadHazardEditor(id) {
  hazardID = id;
  currentID = id;
  renderList('');
  window.location.hash = id;
  API.get('/api/hazards/' + encodeURIComponent(id)).then(function(data) {
    hazardData = data;
    renderHazardEditor(id, data);
  }).catch(function(e) {
    $('#editorMain').innerHTML = '<p style="color:var(--danger)">Failed to load: ' + esc(e.message) + '</p>';
  });
}

function loadItem(id) { loadHazardEditor(id); }

function renderHazardEditor(id, data) {
  var html = renderRenameableHeader('Hazard', id);
  html += '<div class="tabs"><button class="tab active" onclick="switchTab(event,\'fields\')">Fields</button>';
  html += '<button class="tab" onclick="switchTab(event,\'yaml\')">Raw YAML</button></div>';

  html += '<div class="tab-content" id="tabFields">';
  html += '<div class="obj-fields-wrap">';
  HAZARD_SECTIONS.forEach(function(sec) {
    if (!sec.always && sec.detect && !sec.detect(data) && !addedSections[sec.id]) return;
    html += renderCard(sec, data);
  });
  html += '</div>';

  html += '<div class="add-section-bar">';
  html += '<select id="addSectionSelect">';
  html += '<option value="">+ Add Section...</option>';
  HAZARD_SECTIONS.forEach(function(sec) {
    if (sec.always) return;
    if (sec.detect && sec.detect(data)) return;
    if (addedSections[sec.id]) return;
    html += '<option value="' + sec.id + '">' + esc(sec.label) + '</option>';
  });
  html += '</select>';
  html += '<button class="btn btn-primary btn-sm" onclick="addSection()">Add</button>';
  html += renderMoveBar();
  html += '</div>';
  html += '</div>';

  html += '<div class="tab-content" id="tabYaml" style="display:none">';
  html += '<pre>' + esc(data._raw || JSON.stringify(data, null, 2)) + '</pre>';
  html += '</div>';

  html += '<div class="btn-row">';
  html += '<button class="btn btn-primary" onclick="saveHazard()">Save</button>';
  html += '<button class="btn" onclick="duplicateHazard()">Duplicate</button>';
  html += '<button class="btn btn-danger" onclick="deleteHazard()">Delete</button>';
  html += '<button class="btn btn-sm" style="margin-left:auto" onclick="createNewDir()">New Directory</button>';
  html += '</div>';

  $('#editorMain').innerHTML = html;
  setupSearchFields();
}

function renderCurrent() {
  ced_syncDOMToData(hazardData);
  if (!hazardData || !hazardID) return;
  renderHazardEditor(hazardID, hazardData);
}

function renderCard(sec, data) {
  var collapsed = expandedCards[sec.id] === false;
  var isFull = cardWidths[sec.id] !== undefined ? cardWidths[sec.id] : (sec.fullWidth || false);
  var fullClass = isFull ? ' obj-card-full' : '';
  var h = '<div class="obj-card' + fullClass + '" data-card="' + sec.id + '">';
  h += '<div class="obj-card-header" onclick="toggleCard(\'' + sec.id + '\')">';
  h += '<span class="obj-card-arrow">' + (collapsed ? '&#9654;' : '&#9660;') + '</span>';
  h += '<span class="obj-card-label">' + sec.label + '</span>';
  h += '<button class="btn btn-sm obj-card-expand" onclick="event.stopPropagation();toggleCardWidth(\'' + sec.id + '\')" title="' + (isFull ? 'Half width' : 'Full width') + '">' + (isFull ? '\u2190' : '\u2192') + '</button>';
  if (!sec.always) {
    h += '<button class="btn btn-sm btn-danger obj-card-remove" onclick="event.stopPropagation();removeSection(\'' + sec.id + '\')">X</button>';
  }
  h += '</div>';
  if (!collapsed) {
    h += '<div class="obj-card-body">';
    h += '<div class="obj-card-grid">';
    sec.fields.forEach(function(f) {
      h += renderField(sec, f, data, -1);
    });
    h += '</div>';
    h += '</div>';
  }
  h += '</div>';
  return h;
}

function renderField(sec, f, data, idx) {
  return ced_renderField(sec, f, data, idx, null, null, cardPath, fieldID, getVal);
}

function toggleCard(id) {
  expandedCards[id] = expandedCards[id] === false ? true : false;
  renderCurrent();
}

function toggleCardWidth(id) {
  cardWidths[id] = !cardWidths[id];
  renderCurrent();
}

function removeSection(id) {
  var sec = HAZARD_SECTIONS.find(function(s) { return s.id === id; });
  if (!sec) return;
  ced_syncDOMToData(hazardData);
  if (sec.fields) sec.fields.forEach(function(f) { delete hazardData[f[0]]; });
  delete addedSections[id];
  renderHazardEditor(hazardID, hazardData);
}

function addSection() {
  var sel = $('#addSectionSelect');
  var id = sel.value;
  if (!id) return;
  var sec = HAZARD_SECTIONS.find(function(s) { return s.id === id; });
  if (!sec) return;

  if (id === 'combat') {
    hazardData.attack_type = '';
    hazardData.attack = 0;
    hazardData.attack_bonus = 0;
    hazardData.max_hit = 0;
  }
  addedSections[id] = true;
  expandedCards[id] = true;
  renderCurrent();
}

function saveHazard() {
  if (!ced_validateFields(HAZARD_SECTIONS, fieldID, null)) return;

  var out = {};
  HAZARD_SECTIONS.forEach(function(sec) {
    var sectionObj = {};
    var hasValues = sec.always;

    if (sec.fields) {
      sec.fields.forEach(function(f) {
        var fid = fieldID(sec, f[0]);
        var el = document.getElementById(fid);
        if (!el) return;
        var val = collectFieldValue(el, f[2]);
        if (val !== '' && val !== false && val !== 0 && val !== null) hasValues = true;
        sectionObj[f[0]] = val;
      });
    }

    if (sec.always) {
      Object.keys(sectionObj).forEach(function(k) { out[k] = sectionObj[k]; });
    } else if (hasValues) {
      Object.keys(sectionObj).forEach(function(k) { out[k] = sectionObj[k]; });
    }
  });

  ced_cleanOutput(out);
  out.id = hazardID;

  API.put('/api/hazards/' + encodeURIComponent(hazardID), out).then(function(resp) {
    notify('Hazard ' + hazardID + ' saved', 'success');
    updateUndoBar();
    if (resp && resp._raw) hazardData._raw = resp._raw;
  }).catch(function(e) { notify('Save failed: ' + e.message, 'error'); });
}

function deleteHazard() {
  if (!confirm('Delete hazard "' + hazardID + '"?')) return;
  API.del('/api/hazards/' + encodeURIComponent(hazardID)).then(function() {
    notify('Hazard ' + hazardID + ' deleted', 'success');
    updateUndoBar();
    hazardID = null;
    currentID = null;
    hazardData = null;
    $('#editorMain').innerHTML = '<p style="color:#888;text-align:center;margin-top:60px">Deleted</p>';
    loadList();
  }).catch(function(e) { notify('Delete failed: ' + e.message, 'error'); });
}

function duplicateHazard() {
  var baseID = hazardID + '_copy';
  var newID = baseID;
  var counter = 2;
  while (true) {
    var exists = false;
    for (var i = 0; i < allIDs.length; i++) {
      if (allIDs[i] === newID) { exists = true; break; }
    }
    if (!exists) break;
    newID = baseID + '_' + counter;
    counter++;
  }

  var copy = JSON.parse(JSON.stringify(hazardData));
  delete copy._raw;
  delete copy._path;
  copy.id = newID;

  var dir = '';
  if (hazardData._path) {
    var parts = hazardData._path.split('/');
    var parentDir = parts[parts.length - 2];
    if (parentDir !== 'hazards') dir = parentDir;
  }

  API.post('/api/hazards', {id: newID}).then(function() {
    var putOp = API.put('/api/hazards/' + encodeURIComponent(newID), copy);
    if (dir) {
      return putOp.then(function() {
        return API.post('/api/hazards/move', {id: newID, dir: dir});
      });
    }
    return putOp;
  }).then(function() {
    notify('Duplicated as ' + newID, 'success');
    updateUndoBar();
    loadList();
    loadHazardEditor(newID);
  }).catch(function(e) { notify('Duplicate failed: ' + e.message, 'error'); });
}