/* 数据字典 v2 原型 mock（纯前端，无真实后端调用）
 * 口径来源：.scratch/dict-alignment/issues/08-prototype-v2-contract.md（20260908 拍板）
 * Q1 /page 行内嵌 children（含停用）；Q2 扩展 saveOrUpdate，children 非空即复合；
 * 子项全量替换（带 id 更新 / 不带 id 新建 / 缺失删除，63009/63003 拦）；
 * Q3 键值=名称仅复合路径新建行（单项新增与编辑维持现状 63001）；
 * Q4 isDefault 任意行可带，落 DictGroupDefault，同载荷仅一行 true。 */
'use strict';

/* ================= mock 数据 ================= */
let _id = 9000;
const nid = () => 'n' + (++_id);
const genCode = () => 'dict_' + Math.random().toString(16).slice(2, 10);

const STORE = {
  groups: [
    { id: 'g1', name: '行业', code: 'industry', status: 1 },
    { id: 'g2', name: '客户类型', code: 'customer_type', status: 1 },
  ],
  defaultItemId: { g1: 'i1', g2: 'i2' },   // groupId -> 默认项 id（DictGroupDefault 模拟，一组一个）
  items: [   // 顶层只挂一级项；二级项全部内嵌在 children（= /page v2 契约）
    { id: 'i1', groupId: 'g1', name: '互联网/信息技术', code: 'internet', value: '互联网/信息技术',
      sortNo: 1, status: 1, description: '', builtin: false, referenced: false,
      children: [
        { id: 'i101', name: '电商', code: 'elec', value: '电商', sortNo: 1, status: 1, referenced: false },
        { id: 'i102', name: '游戏', code: 'game', value: '游戏', sortNo: 2, status: 1, referenced: true },
        { id: 'i103', name: '社交（停用示例）', code: 'social', value: '社交', sortNo: 3, status: 0, referenced: false },
      ] },
    { id: 'i3', groupId: 'g1', name: '金融', code: 'finance', value: '金融', sortNo: 2, status: 1, description: '', builtin: false, referenced: false,
      children: [
        { id: 'i301', name: '银行', code: 'bank', value: '银行', sortNo: 1, status: 1, referenced: false },
        { id: 'i302', name: '保险', code: 'insurance', value: '保险', sortNo: 2, status: 1, referenced: false },
      ] },
    { id: 'i4', groupId: 'g1', name: '制造业（无子项示例）', code: 'manufacture', value: '制造业', sortNo: 3, status: 1, description: '', builtin: false, referenced: false, children: [] },
    { id: 'i2', groupId: 'g2', name: '潜在客户', code: 'potential', value: '潜在客户', sortNo: 1, status: 1, description: '', builtin: false, referenced: true, children: [] },
    { id: 'i5', groupId: 'g2', name: '重点客户', code: 'key_account', value: '重点客户', sortNo: 2, status: 1, description: '', builtin: false, referenced: false, children: [] },
    { id: 'i6', groupId: 'g2', name: '一般客户', code: 'normal', value: '一般客户', sortNo: 3, status: 1, description: '', builtin: false, referenced: false, children: [] },
  ],
};
const $ = id => document.getElementById(id);
const esc = s => s == null ? '' : String(s).replace(/[&<>"']/g, c => ({ '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;' }[c]));
const expanded = new Set();
const groupOf = id => STORE.groups.find(g => g.id === id);
const isDefaultItem = it => STORE.defaultItemId[it.groupId] === it.id;

function toast(msg, type) {
  const d = document.createElement('div');
  d.className = 'toast-item toast-' + (type === 'ok' ? 'ok' : type === 'err' ? 'err' : 'info');
  d.textContent = msg;
  $('toast').appendChild(d);
  setTimeout(() => d.remove(), 6000);
}

/* ================= 列表（只出一级 + 行内嵌子项） ================= */
function visibleRows() {
  const g = $('iGroup').value, kw = ($('iKeyword').value || '').trim(), st = $('iStatus').value;
  return STORE.items.filter(i =>
    (!g || i.groupId === g) &&
    (!st || String(i.status) === st) &&
    (!kw || (i.name || '').includes(kw) || (i.code || '').includes(kw)));   // 筛选只作用一级行
}
const statusBadge = s => s === 1 ? '<span class="badge b2">启用</span>' : '<span class="badge b4">停用</span>';
function marks(it) {
  const g = groupOf(it.groupId);
  return (it.referenced ? '<span class="badge b3">被引用</span>' : '') +
    (it.status === 1 && g && g.status === 0 ? '<span class="badge b1">失活</span>' : '');
}
function renderItems() {
  const rows = visibleRows();
  $('iBody').innerHTML = rows.length ? rows.map(i => {
    const kids = i.children || [];
    const open = expanded.has(i.id);
    const chev = '<span class="expander' + (kids.length ? (open ? ' on' : '') : ' none') +
      '" ' + (kids.length ? 'onclick="toggleExpand(\'' + i.id + '\')" title="展开/收起二级子项"' : 'title="无子项"') + '>' + (open ? '▼' : '▶') + '</span>';
    let html = '<tr>' +
      '<td>' + chev + '</td>' +
      '<td>' + esc(groupOf(i.groupId).name) + '</td>' +
      '<td>' + esc(i.name) + (kids.length ? '<span class="childcount">' + kids.length + ' 个子项</span>' : '') + '</td>' +
      '<td>' + esc(i.code) + '</td><td>' + esc(i.value) + '</td><td>' + esc(i.sortNo) + '</td>' +
      '<td>' + statusBadge(i.status) + '</td>' +
      '<td>' + (isDefaultItem(i) ? '<span class="badge b5">默认</span>' : '<span class="mark">否</span>') + '</td>' +
      '<td>' + marks(i) + '</td>' +
      '<td class="ops">' +
      '<button onclick="dlgItem(\'' + i.id + '\')">编辑</button>' +
      '<button onclick="itemStatus(\'' + i.id + '\')">' + (i.status === 1 ? '停用' : '启用') + '</button>' +
      '<button onclick="itemSetDefault(\'' + i.id + '\')">设默认</button>' +
      '<button class="warn" onclick="itemDelete(\'' + i.id + '\')">删除</button></td></tr>';
    if (open) {
      html += kids.length ? kids.map(c => '<tr class="lv2row">' +
        '<td></td><td></td>' +
        '<td>└ ' + esc(c.name) + ' <span class="mark">二级</span></td>' +
        '<td>' + esc(c.code) + '</td><td>' + esc(c.value) + '</td><td>' + esc(c.sortNo) + '</td>' +
        '<td>' + statusBadge(c.status) + '</td>' +
        '<td>' + (isDefaultItem(c) ? '<span class="badge b5">默认</span>' : '<span class="mark">否</span>') + '</td>' +
        '<td>' + (c.referenced ? '<span class="badge b3">被引用</span>' : '') + '</td>' +
        '<td class="ops"><span class="hint">随一级项「编辑」弹窗全量维护</span></td></tr>').join('')
        : '<tr class="lv2row"><td></td><td></td><td colspan="8" class="hint">（无二级子项）</td></tr>';
    }
    return html;
  }).join('') : '<tr><td colspan="10" class="empty">暂无字典项</td></tr>';
}
function toggleExpand(id) { expanded.has(id) ? expanded.delete(id) : expanded.add(id); renderItems(); }

/* ================= 子项行（弹窗内列表） ================= */
function kidRowHtml(k) {
  const exist = !k._new;
  return '<tr data-kid="' + esc(k._tmp || k.id || '') + '" data-new="' + (k._new ? 1 : 0) + '" class="' + (k._del ? 'ghost' : '') + '">' +
    '<td><input value="' + esc(k.name) + '" placeholder="必填"></td>' +
    '<td><input value="' + esc(k.code) + '" ' + (exist ? 'readonly style="background:#f5f7fa"' : '') + ' placeholder="留空自动生成"></td>' +
    '<td style="text-align:center"><input type="checkbox" class="kdef" ' + (k._def ? 'checked' : '') + '></td>' +
    '<td><input class="ksort" value="' + esc(k.sortNo == null ? '' : k.sortNo) + '" style="width:56px"></td>' +
    '<td class="vhint">' + (exist ? '现值 ' + esc(k.value) + '（更新行键值不变）' : '= 名称（后端落值）') + '</td>' +
    '<td>' + (exist ? '<span class="hint">带 id 更新</span> ' : '<span class="hint">新建</span> ') +
    '<button class="delrow" onclick="delKidRow(this)">' + (k._del ? '恢复' : '删行') + '</button></td></tr>';
}
function readKidRows() {
  return [...document.querySelectorAll('#kidsBody tr')]
    .filter(tr => tr.querySelector('input'))
    .map(tr => ({
      _tmp: tr.dataset.kid,
      _new: tr.dataset.new === '1',
      name: tr.querySelectorAll('input')[0].value.trim(),
      code: tr.querySelectorAll('input')[1].value.trim(),
      _def: tr.querySelector('.kdef').checked,
      sortNo: tr.querySelector('.ksort').value.trim(),
      _del: tr.classList.contains('ghost'),
    }));
}
function repaintKids(kids) {
  $('kidsBody').innerHTML = kids.map(kidRowHtml).join('') || '<tr><td colspan="6" class="hint">暂无二级子项，点上方按钮添加</td></tr>';
  syncValueField();
}
function addKidRow() {
  const kids = readKidRows();
  kids.push({ _tmp: nid(), _new: true, name: '', code: '', _def: false, sortNo: kids.filter(k => !k._del).length + 1, _del: false });
  repaintKids(kids);
}
function delKidRow(btn) {
  const tr = btn.closest('tr');
  const kids = readKidRows();
  const idx = [...document.querySelectorAll('#kidsBody tr')].indexOf(tr);
  kids[idx]._del = !kids[idx]._del;
  repaintKids(kids);
}

/* ================= 键值字段联动（Q3 口径的可视化） ================= */
function syncValueField() {
  const v = $('fiValue'); if (!v) return;
  const hint = $('fiValueHint');
  const liveKids = readKidRows().filter(k => !k._del).length;
  if (window._editId) {
    v.disabled = false;
    hint.textContent = '编辑：维持现状，传了就改（63001 照走）；子项新建行不传、后端取名称';
  } else if (liveKids > 0) {
    v.disabled = true; v.value = '';
    v.placeholder = '复合新增：不传键值，后端取字典名称落值';
    hint.textContent = '已有 ' + liveKids + ' 个二级子项 → 复合新增：不传键值，后端直接取字典名称落值';
  } else {
    v.disabled = false;
    v.placeholder = '必填，空白报 63001（单项新增现状）';
    hint.textContent = '无子项 → 单项新增现状：键值必填（空白 63001）';
  }
}

/* ================= 复合新增/编辑弹窗 ================= */
function dlgItem(id) {
  window._editId = id || '';
  const it = id ? STORE.items.find(x => x.id === id) : null;
  const gOpts = STORE.groups.map(g => '<option value="' + g.id + '" ' + (it && it.groupId === g.id ? 'selected' : '') + '>' +
    esc(g.name) + '（' + esc(g.code) + '）</option>').join('');
  const kids = it ? (it.children || []).map(c => Object.assign({}, c, { _def: STORE.defaultItemId[it.groupId] === c.id })) : [];
  $('dlgTitle').textContent = it
    ? '编辑字典项（children 全量替换：带 id 更新 / 不带 id 新建 / 缺失删除）'
    : '新建字典项（有子项=复合新增，键值=名称；无子项=单项现状）';
  $('dlgBody').innerHTML = `
    <label><b>所属分组*</b><select id="fiGroup">${gOpts}</select></label>
    <label><b>字典名称*</b><input id="fiName" value="${esc(it && it.name)}"></label>
    <label><b>字典键值</b><input id="fiValue" value="${esc(it ? it.value : '')}" placeholder="必填，空白报 63001（拍板3）"><span class="hint" id="fiValueHint"></span></label>
    <label><b>字典编码</b><input id="fiCode" value="${esc(it && it.code)}" ${it ? 'readonly style="background:#f5f7fa"' : ''} placeholder="留空自动生成 dict_*；创建后只读（63008）"></label>
    <label><b>排序号</b><input id="fiSort" value="${esc(it ? (it.sortNo == null ? '' : it.sortNo) : '')}"></label>
    <label><b>状态</b><select id="fiStatus"><option value="1" ${!it || it.status === 1 ? 'selected' : ''}>启用</option><option value="0" ${it && it.status === 0 ? 'selected' : ''}>停用</option></select>
      <span class="hint">停用分组默认项 → 63013（口径沿用）</span></label>
    <label><b>设为分组默认项</b><input type="checkbox" id="fiDefault" ${it && isDefaultItem(it) ? 'checked' : ''}>
      <span class="hint">与子项「是否默认值」同口径：同载荷仅一行 true（一组一个默认，自动取消原默认）</span></label>
    <label><b>描述</b><textarea id="fiDesc" rows="2">${esc(it && it.description)}</textarea></label>
    <div class="kids">
      <div class="khead"><b>二级字典项</b><span class="hint">列表形式随本接口一次提交（children[i].xxx 表单绑定）</span>
        <span style="flex:1"></span><button class="act" onclick="addKidRow()">+ 添加二级字典项</button></div>
      <table><thead><tr><th>字典名称*</th><th>字典编码</th><th>是否默认值</th><th>排序</th><th>键值</th><th></th></tr></thead>
      <tbody id="kidsBody">${kids.map(kidRowHtml).join('') || '<tr><td colspan="6" class="hint">暂无二级子项，点上方按钮添加</td></tr>'}</tbody></table>
      <div class="hint">「删行」置灰划线 = 全量替换中的「缺失即删除」；被引用(63009)/内置(63003) 项后端拦截。新建行键值=名称；带 id 更新行键值不变。</div>
    </div>
    <div id="fiOut"></div>`;
  $('dlgFoot').innerHTML = '<button onclick="dlgClose()">取消</button><button class="ok" onclick="saveItem(\'' + (id || '') + '\')">保存</button>';
  $('dlg').showModal();
  syncValueField();
}
function dlgClose() { $('dlg').close(); }

/* ================= 保存（复合语义 + 守卫演示） ================= */
function payloadPreview(id, p, singleMode) {
  const g = groupOf(p.groupId);
  const L = [];
  L.push('POST /api/dict/item/saveOrUpdate' + (id ? '?id=' + id : '') +
    (singleMode ? '   （children 空 → 单项保存现状）' : '   （children 非空 → 复合保存）'));
  L.push('groupId=' + p.groupId + '   # ' + g.name + '（' + g.code + '）');
  L.push('name=' + p.name);
  if (singleMode) L.push('value=' + p.value + '   # 单项新增：键值照传（现状）');
  else if (id) L.push('value=' + p.value + '   # 编辑：键值照传，传了就改（现状）');
  else L.push('（复合新增：不传顶层 value——新建行键值=名称）');
  L.push('code=' + (p.code || '') + (p.code || id ? '' : '   # 空 → 后端自动生成 dict_*'));
  L.push('sortNo=' + p.sortNo);
  L.push('status=' + p.status);
  L.push('isDefault=' + p.isDefault);
  L.push('description=' + p.description);
  p.children.forEach((k, i) => {
    L.push('children[' + i + ']' + (k.id ? '.id=' + k.id + '   # 带 id → 更新（键值维持现值）' : '   # 无 id → 新建（后端落 键值=名称）'));
    L.push('children[' + i + '].name=' + k.name);
    L.push('children[' + i + '].code=' + (k.code || '') + (k.code || k.id ? '' : '   # 空 → 后端自动生成'));
    L.push('children[' + i + '].sortNo=' + k.sortNo);
    L.push('children[' + i + '].isDefault=' + k.isDefault);
  });
  const cur = id ? STORE.items.find(x => x.id === id) : null;
  if (cur) {
    const missing = (cur.children || []).filter(c => !p.children.some(k => k.id === c.id));
    L.push(missing.length
      ? '（本载荷缺失的既有子项 → 删除：' + missing.map(c => c.id + ' ' + c.name).join('、') + '；被引用/内置则 63009/63003 拦）'
      : '（既有子项全部在载荷中，无删除）');
  }
  const box = $('payloadBox');
  box.style.display = 'block';
  box.textContent = L.join('\n');
  $('payloadHint').textContent = '↑ 上一条保存的请求载荷（仅预览，mock 未真正发请求）。Spring 表单绑定集合语法：children[0].name=…';
}
function saveItem(id) {
  const it = id ? STORE.items.find(x => x.id === id) : null;
  const err = m => { $('fiOut').innerHTML = '<div class="errbox">失败: ' + esc(m) + '</div>'; };
  const name = ($('fiName').value || '').trim();
  if (!name) return err('字典名称不能为空');
  const kidsRaw = readKidRows();
  // 全量替换守卫：缺失（含删行置灰）的既有子项先过 63009/63003
  if (it) {
    const kept = kidsRaw.filter(k => !k._del).map(k => k._tmp);
    const missing = (it.children || []).filter(c => !kept.includes(c.id));
    for (const c of missing) {
      if (c.referenced) return err('63009 该字典已被引用，无法删除（子项 ' + c.name + '）——全量替换守卫生效');
      if (c.builtin) return err('63003 内置字典不可删除（子项 ' + c.name + '）');
    }
  }
  const kids = kidsRaw.filter(k => !k._del).map((k, i) => ({
    id: k._new ? undefined : k._tmp,
    name: k.name, code: k.code,
    sortNo: k.sortNo === '' ? i + 1 : Number(k.sortNo),
    isDefault: k._def,
  }));
  for (let i = 0; i < kids.length; i++) if (!kids[i].name) return err('二级字典项名称不能为空（第 ' + (i + 1) + ' 行）');
  const selfDefault = $('fiDefault').checked;
  const defCount = (selfDefault ? 1 : 0) + kids.filter(k => k.isDefault).length;
  if (defCount > 1) return err('同一载荷只允许一行「是否默认值」=是（一组仅一个默认）——当前 ' + defCount + ' 行为 true');
  if (it && $('fiStatus').value === '0' && STORE.defaultItemId[it.groupId] === it.id) {
    return err('63013 该字典为分组默认项，请先取消默认或指定其他默认项');
  }
  const singleMode = kids.length === 0;      // children 空 → 单项保存现状（键值必填）
  const value = ($('fiValue').value || '').trim();
  if (it && !value) return err('63001 字典键值不能为空（编辑维持现状口径）');
  if (!it && singleMode && !value) return err('63001 字典键值不能为空（单项新增现状口径）');
  const groupId = $('fiGroup').value;
  const code = ($('fiCode').value || '').trim();
  const p = {
    groupId, name, code, value,
    sortNo: ($('fiSort').value || '').trim(), status: $('fiStatus').value,
    isDefault: selfDefault, description: ($('fiDesc').value || '').trim(), children: kids,
  };
  payloadPreview(id, p, singleMode);
  // ---- mock 落库（children 全量替换） ----
  const lvl1Id = it ? it.id : nid();
  const newKids = kids.map(k => {
    const old = k.id && it ? (it.children || []).find(c => c.id === k.id) : null;
    return {
      id: old ? old.id : nid(),
      name: k.name,
      code: old ? old.code : (k.code || genCode()),
      value: old ? old.value : k.name,       // 新建行键值=名称；更新行键值不变
      sortNo: k.sortNo, status: 1,
      referenced: old ? old.referenced : false,
      builtin: old ? old.builtin : false,
    };
  });
  if (it) {
    Object.assign(it, {
      groupId, name,
      sortNo: p.sortNo === '' ? it.sortNo : Number(p.sortNo),
      status: Number(p.status), description: p.description,
      value: value,                            // 编辑：传了就改（现状口径）
      children: newKids,
    });
  } else {
    STORE.items.push({
      id: lvl1Id, groupId, name,
      code: code || genCode(),
      value: singleMode ? value : name,       // 单项现状传值；复合新建=名称
      sortNo: p.sortNo === '' ? undefined : Number(p.sortNo),
      status: Number(p.status), description: p.description,
      builtin: false, referenced: false, children: newKids,
    });
  }
  const defWinner = selfDefault ? lvl1Id : (kids.find(k => k.isDefault) || {}).id;
  if (defWinner) STORE.defaultItemId[groupId] = defWinner;
  toast('保存成功（mock）——children 已按全量替换落库', 'ok');
  dlgClose();
  expanded.add(lvl1Id);
  renderItems();
}

/* ================= 行内操作（守卫口径沿用） ================= */
function itemStatus(id) {
  const it = STORE.items.find(x => x.id === id);
  if (it.status === 1 && STORE.defaultItemId[it.groupId] === it.id) return toast('63013 该字典为分组默认项，请先取消默认或指定其他默认项', 'err');
  it.status = it.status === 1 ? 0 : 1;
  toast('状态已更新（mock）', 'ok'); renderItems();
}
function itemSetDefault(id) {
  const it = STORE.items.find(x => x.id === id);
  STORE.defaultItemId[it.groupId] = it.id;
  toast('已设为分组默认项（同组原默认自动取消，mock）', 'ok'); renderItems();
}
function itemDelete(id) {
  const it = STORE.items.find(x => x.id === id);
  if (it.referenced) return toast('63009 该字典已被引用，无法删除（force-delete 为计数飘高兜底入口，不在本原型展开）', 'err');
  if ((it.children || []).length) return toast('有存活子项，先在「编辑」弹窗删行保存后再删除本项（口径沿用）', 'err');
  if (!confirm('确认删除字典项 ' + it.name + '？')) return;
  STORE.items = STORE.items.filter(x => x.id !== id);
  toast('已删除（mock）', 'ok'); renderItems();
}

/* ================= 初始化 ================= */
(function init() {
  $('iGroup').innerHTML = '<option value="">全部分组</option>' +
    STORE.groups.map(g => '<option value="' + g.id + '">' + esc(g.name) + '（' + esc(g.code) + '）</option>').join('');
  expanded.add('i1');
  renderItems();
})();