var techData = null;
var techID = null;
var expandedCards = {};
var cardWidths = {};

var TECH_SECTIONS = [
  {
    id: 'core', label: 'Core', always: true,
    fields: [
      ['name', 'Name', 'text', 'Protect from Melee'],
      ['level', 'Level', 'number', '37', 'narrow'],
      ['drain_rate', 'Drain Rate', 'number', '0.5', 'narrow'],
      ['category', 'Category', 'select', '|accuracy|combo|defense|protection|ranged|science|strength|utility'],
      ['group', 'Group', 'select', '|accuracy_tier|defense_tier|protection|ranged_tier|regen_tier|science_tier|strength_tier'],
    ]
  },
  {
    id: 'effects', label: 'Effects', always: true, path: 'effects',
    fields: [
      ['accuracy_percent', 'Accuracy %', 'number', '5', 'narrow'],
      ['strength_percent', 'Strength %', 'number', '5', 'narrow'],
      ['defense_percent', 'Defense %', 'number', '5', 'narrow'],
      ['ranged_percent', 'Ranged %', 'number', '5', 'narrow'],
      ['science_percent', 'Science %', 'number', '5', 'narrow'],
      ['damage_reduction', 'Damage Reduction', 'number', '40', 'narrow'],
      ['hp_regen_multi', 'HP Regen Multi', 'number', '2', 'narrow'],
      ['preserve_drain', 'Preserve Drain', 'number', '1', 'narrow'],
      ['retribution_pct', 'Retribution %', 'number', '25', 'narrow'],
      ['protect_melee', 'Protect Melee', 'checkbox'],
      ['protect_ranged', 'Protect Ranged', 'checkbox'],
      ['protect_science', 'Protect Science', 'checkbox'],
    ]
  }
];

function initTechEditor() {
  editorType = 'techs';
  editorFields = [];
  loadList();
  if (window.location.hash) loadTechEditor(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 loadTechEditor(id) {
  techID = id;
  currentID = id;
  renderList('');
  window.location.hash = id;
  API.get('/api/techs/' + encodeURIComponent(id)).then(function(data) {
    techData = data;
    renderTechEditor(id, data);
  }).catch(function(e) {
    $('#editorMain').innerHTML = '<p style="color:var(--danger)">Failed to load: ' + esc(e.message) + '</p>';
  });
}

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

function renderTechEditor(id, data) {
  var html = renderRenameableHeader('Tech', 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">';
  TECH_SECTIONS.forEach(function(sec) {
    html += renderCard(sec, data);
  });
  html += '</div>';
  html += '<div class="add-section-bar">' + renderMoveBar() + '</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="saveTech()">Save</button>';
  html += '<button class="btn" onclick="duplicateTech()">Duplicate</button>';
  html += '<button class="btn btn-danger" onclick="deleteTech()">Remove</button>';
  html += '<button class="btn btn-sm" style="margin-left:auto" onclick="createNewDir()">New Directory</button>';
  html += '</div>';

  $('#editorMain').innerHTML = html;
  document.querySelectorAll('details.obj-card').forEach(function(d) {
    d.addEventListener('toggle', function() { expandedCards[d.getAttribute('data-card')] = d.open; });
  });
  setupSearchFields();
}

function renderCurrent() {
  ced_syncDOMToData(techData);
  if (!techData || !techID) return;
  renderTechEditor(techID, techData);
}

function renderCard(sec, data) {
  var openAttr = expandedCards[sec.id] === false ? '' : ' open';
  var isFull = cardWidths[sec.id] !== undefined ? cardWidths[sec.id] : (sec.fullWidth || false);
  var fullClass = isFull ? ' obj-card-full' : '';
  var h = '<details class="obj-card' + fullClass + '" data-card="' + sec.id + '"' + openAttr + '>';
  h += '<summary class="obj-card-header">';
  h += '<span class="obj-card-arrow"></span>';
  h += '<span class="obj-card-label">' + sec.label + '</span>';
  h += '<button class="btn btn-sm obj-card-expand" onclick="event.preventDefault();toggleCardWidth(\'' + sec.id + '\')" title="' + (isFull ? 'Half width' : 'Full width') + '">' + (isFull ? '\u2190' : '\u2192') + '</button>';
  h += '</summary>';
  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 += '</details>';
  return h;
}

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

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

function saveTech() {
  if (!ced_validateFields(TECH_SECTIONS, fieldID, null)) return;

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

  ced_cleanOutput(out);
  out.id = techID;

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

function deleteTech() {
  if (!confirm('Delete tech "' + techID + '"?')) return;
  API.del('/api/techs/' + encodeURIComponent(techID)).then(function() {
    notify('Tech ' + techID + ' deleted', 'success');
    updateUndoBar();
    techID = null;
    currentID = null;
    techData = 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 duplicateTech() {
  var baseID = techID + '_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(techData));
  delete copy._raw;
  delete copy._path;
  copy.id = newID;

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

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