(function () {
  const $ = (id) => document.getElementById(id)
  const api = (path, opts = {}) => fetch(`/api/calendar_reminder/${path.replace(/^\//, '')}`, Object.assign({ credentials: 'same-origin', headers: { 'Content-Type': 'application/json' } }, opts, { body: (opts.body && typeof opts.body !== 'string') ? JSON.stringify(opts.body) : opts.body }))
  const copy = async (text) => {
    try { await navigator.clipboard.writeText(text); return true } catch { return false }
  }
  const setBtn = (el, loading, text) => { if (!el) return; if (loading) { el.disabled = true; el.dataset.old = el.textContent; el.textContent = text || el.textContent + ' 中…' } else { el.disabled = false; if (el.dataset.old) el.textContent = el.dataset.old } }
  const toastNode = (msg, type) => {
    if (typeof msg !== 'string' || !msg) return
    const div = document.createElement('div')
    const colorMap = { success: '#d1e7dd', error: '#f8d7da', info: '#cff4fc', warn: '#fff3cd' }
    const fgMap = { success: '#0f5132', error: '#842029', info: '#055160', warn: '#664d03' }
    const bg = colorMap[type || 'info'] || colorMap.info
    const fg = fgMap[type || 'info'] || fgMap.info
    div.textContent = msg
    div.style.cssText = `position:fixed;top:64px;right:24px;z-index:99999;padding:8px 14px;border-radius:8px;box-shadow:0 4px 18px rgba(0,0,0,0.18);background:${bg};color:${fg};font-size:13px;max-width:420px;animation:cbFadeIn 0.18s ease-out;`
    if (!document.getElementById('cbToastStyles')) {
      const s = document.createElement('style'); s.id = 'cbToastStyles'
      s.textContent = `@keyframes cbFadeIn { from { transform: translateY(-6px); opacity: 0;} to { transform: translateY(0); opacity:1; } }`
      document.head.appendChild(s)
    }
    document.body.appendChild(div)
    setTimeout(() => { div.style.transition = 'opacity 0.2s'; div.style.opacity = '0'; setTimeout(() => div.remove(), 240) }, 2200)
  }
  const toast = (msg, type) => {
    try {
      if (window.CAL && window.CAL.toast) window.CAL.toast(msg, type)
      else toastNode(msg, type)
    } catch { toastNode(msg, type) }
  }
  const readForm = () => {
    const mode = $('batch_mode').value
    const weekdays = [...document.querySelectorAll('.batch-wd:checked')].map(c => Number(c.value))
    const params = {
      batchName: $('batch_name').value.trim(),
      mode,
      rangeStart: $('batch_rangeStart').value,
      rangeEnd: $('batch_rangeEnd').value,
      allDay: $('batch_allDay').checked,
      completed: $('batch_completed').checked,
      startTime: $('batch_startTime').value || '',
      endTime: $('batch_endTime').value || '',
      remindTime: $('batch_remindTime').value || '',
      title: $('batch_title').value.trim(),
      content: $('batch_content').value
    }
    if (mode === 'daily') params.dailyEvery = Number($('batch_dailyEvery').value || 1)
    if (mode === 'weekly') { params.weeklyEvery = Number($('batch_weeklyEvery').value || 1); params.weekdays = weekdays }
    if (mode === 'monthlyByDay') { params.monthlyEvery = Number($('batch_monthlyEvery').value || 1); params.monthlyDays = $('batch_monthlyDays').value.trim() }
    if (mode === 'monthlyByNthWeekday') { params.monthlyEvery2 = Number($('batch_monthlyEvery2').value || 1); params.nthWeek = Number($('batch_nthWeek').value || 3); params.nthWeekday = Number($('batch_nthWeekday').value || 0) }
    return params
  }
  const fillForm = (params) => {
    if (!params) return
    const p = Object.assign({
      mode: 'monthlyByDay', rangeStart: '', rangeEnd: '', allDay: false, completed: false,
      startTime: '09:00', endTime: '10:00', remindTime: '08:30', title: '', content: ''
    }, params || {})
    $('batch_name').value = p.batchName || ''
    $('batch_mode').value = p.mode
    $('batch_rangeStart').value = p.rangeStart
    $('batch_rangeEnd').value = p.rangeEnd
    $('batch_allDay').checked = !!p.allDay
    $('batch_completed').checked = !!p.completed
    $('batch_startTime').value = p.startTime
    $('batch_endTime').value = p.endTime
    $('batch_remindTime').value = p.remindTime
    $('batch_title').value = p.title
    $('batch_content').value = p.content
    $('batch_dailyEvery').value = p.dailyEvery || 1
    $('batch_weeklyEvery').value = p.weeklyEvery || 1
    if (Array.isArray(p.weekdays)) document.querySelectorAll('.batch-wd').forEach(cb => { cb.checked = p.weekdays.includes(Number(cb.value)) })
    $('batch_monthlyEvery').value = p.monthlyEvery || 2
    $('batch_monthlyDays').value = p.monthlyDays || '1-5'
    $('batch_monthlyEvery2').value = p.monthlyEvery2 || 1
    $('batch_nthWeek').value = p.nthWeek || 3
    $('batch_nthWeekday').value = String(p.nthWeekday ?? 0)
    refreshModeVisibility()
    $('batch_btnApply').disabled = true
    $('batch_btnDownload').disabled = true
    $('batch_previewArea').classList.add('d-none')
  }
  const refreshModeVisibility = () => {
    const mode = $('batch_mode').value
    document.querySelectorAll('.mode-fieldset').forEach(el => {
      el.style.display = (el.dataset.mode === mode) ? '' : 'none'
    })
  }
  let latestPreview = null
  const onPreview = async () => {
    const params = readForm()
    if (!params.rangeStart || !params.rangeEnd) return toast('请选择时间范围', 'error')
    if (!params.title) return toast('请填写标题模板', 'error')
    if (params.mode === 'weekly' && (!params.weekdays || !params.weekdays.length)) return toast('每周模式请至少选一个星期几', 'error')
    if (params.mode === 'monthlyByDay' && !params.monthlyDays) return toast('请填写每月日期表达式（如 1-5）', 'error')
    const btn = $('batch_btnPreview')
    setBtn(btn, true, '预览中…')
    try {
      const r = await api('/batch/preview', { method: 'POST', body: params })
      const data = await r.json()
      if (!data.ok) throw new Error(data.error || 'preview failed')
      latestPreview = data
      $('batch_previewArea').classList.remove('d-none')
      const stats = `预生成：<b>${data.generated}</b> 条。模式：${data.summary}，区间：${data.range_start} ~ ${data.range_end}。batch_id = <code>${data.batchId}</code>`
      $('batch_previewStats').innerHTML = stats
      if (data.pre_existing_count) {
        $('batch_preExisting').textContent = `⚠ 其中 ${data.pre_existing_count} 条 (title, start) 已存在，入库时将命中去重并复用原 id（不会真插入新行）`
      } else { $('batch_preExisting').textContent = '' }
      const tb = $('batch_sampleTable').querySelector('tbody')
      tb.innerHTML = ''
      ;(data.sample_list || []).forEach(s => {
        const tr = document.createElement('tr')
        tr.innerHTML = `<td>${s.start || ''}</td><td>${s.end || ''}</td><td>${s.remindAt || ''}</td><td>${s.title || ''}</td>`
        tb.appendChild(tr)
      })
      $('batch_sqlText').value = data.sql_display + (data.truncated ? '\n... 超过 500 行，完整 SQL 请点下载 SQL 文件按钮' : '')
      $('batch_btnApply').disabled = false
      $('batch_btnDownload').disabled = false
    } catch (e) {
      toast('预览失败: ' + e.message, 'error')
    } finally { setBtn(btn, false) }
  }
  const onApply = async () => {
    if (!latestPreview) return toast('请先点「预览 SQL」', 'error')
    const ok = confirm(`确认将 ${latestPreview.generated} 条事件直接写入数据库？\n（可在批次管理里一键回滚逻辑删除）`)
    if (!ok) return
    const btn = $('batch_btnApply')
    setBtn(btn, true, '入库中…')
    try {
      const r = await api('/batch/apply', {
        method: 'POST',
        body: { batch_id: latestPreview.batchId, params: latestPreview.params_saved, sql_full: latestPreview.sql_full, skip_external_sync: $('batch_skipExternal').checked }
      })
      const data = await r.json()
      if (!data.ok) throw new Error(data.error || 'apply failed')
      toast(`写入成功：生成${data.generated} 入库${data.inserted} 去重${data.dedup} 预重${data.pre_existing}`, 'success')
      loadBatches()
      const tabs = bootstrap.Tab.getOrCreateInstance($('tab-batches'))
      tabs.show()
    } catch (e) {
      toast('入库失败: ' + e.message, 'error')
    } finally { setBtn(btn, false) }
  }
  const onDownload = () => {
    if (!latestPreview) return
    const blob = new Blob([latestPreview.sql_full], { type: 'text/plain;charset=utf-8' })
    const a = document.createElement('a')
    a.href = URL.createObjectURL(blob)
    a.download = `calendar_batch_preview_${latestPreview.batchId}.sql`
    a.click()
    URL.revokeObjectURL(a.href)
  }

  /* ---------- SQL Manual Tab ---------- */
  let _sqlLatestReport = null
  let _sqlConfirmDup = false
  let _sqlConfirmForbidden = false

  const pad2 = (n) => String(n).padStart(2, '0')
  const tsFile = () => {
    const d = new Date()
    return `${d.getFullYear()}${pad2(d.getMonth()+1)}${pad2(d.getDate())}_${pad2(d.getHours())}${pad2(d.getMinutes())}${pad2(d.getSeconds())}`
  }
  const escapeHtml = (s) => String(s == null ? '' : s).replace(/[&<>"']/g, ch => ({ '&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;' }[ch]))

  const sqlReadForm = () => ({
    batch_name: ($('sql_batch_name') || {}).value || '',
    skip_external_sync: !!($('sql_skipExternal') || {}).checked,
    mark_completed: !!($('sql_completed') || {}).checked,
    sql_text: ($('sql_textarea') || {}).value || ''
  })

  const sqlRenderReport = (data) => {
    _sqlLatestReport = data || null
    const area = $('sql_checkArea')
    if (!area) return
    if (!_sqlLatestReport || !data) { area.classList.add('d-none'); return }
    area.classList.remove('d-none')
    const total = data.total_statements || 0
    const ins = data.insert_statements || 0
    const rows = data.total_rows || 0
    const ok = !!data.ok
    $('sql_checkSummary').textContent = `${ok ? '✅ 通过' : '❌ 未通过'} · ${total} 语句 · ${ins} INSERT · ${rows} 行`
    $('sql_checkSummary').className = `badge ${ok ? 'bg-success' : 'bg-danger'}`
    // Meta
    $('sql_checkMeta').innerHTML = `
      阈值：重复相似度 ≥ <b>${data.duplicate_threshold || 0.65}</b>，最多 <b>${data.max_rows_limit || 500}</b> 条，执行超时 <b>${Math.round((data.max_ms_limit || 60000)/1000)}s</b>。<br>
      检测到 <b>${data.pre_existing_count || 0}</b> 条严格匹配(title,start) 预重（入库时会自动去重复用原 id）<br>
      检测到 <b>${data.high_confidence_duplicates || 0}</b> 条宽松匹配高置信重复（LIKE % + ±10min）。时间范围：<b>${data.range_start || '未知起'}</b> ~ <b>${data.range_end || '未知止'}</b>
    `
    // Forbidden / syntax / col errors
    const renderList = (containerId, headerText, list, color) => {
      const el = $(containerId)
      if (!el) return
      if (!list || !list.length) { el.classList.add('d-none'); return }
      el.classList.remove('d-none')
      const items = list.map((e, idx) => `<li><b>#${idx+1}</b> [stmt ${e.stmt_idx ?? '-'}${e.row_idx != null ? `, row ${e.row_idx}` : ''}] ${escapeHtml(e.reason || e.message || '')}${e.preview ? `<br><small class="text-muted">${escapeHtml(e.preview)}</small>` : ''}${e.title ? `<br><small>title=${escapeHtml(e.title)}</small>` : ''}</li>`).join('')
      el.innerHTML = `<div class="fw-bold mb-1" style="color:${color}">${headerText}</div><ul style="padding-left:1.25rem">${items}</ul>`
    }
    renderList('sql_checkForbidden', '❌ 语句类型被拒绝（只允许 INSERT INTO events）：', data.forbidden, '#dc3545')
    renderList('sql_checkSyntaxErrors', '❌ 语法错误（SQLite EXPLAIN 未通过）：', data.syntax_errors, '#dc3545')
    renderList('sql_checkColErrors', '❌ 列 / 必填 / 时间格式错误：', data.col_errors, '#dc3545')
    // Duplicates
    const dupEl = $('sql_checkDuplicate')
    if (dupEl) {
      if ((data.high_confidence_duplicates || 0) === 0) dupEl.classList.add('d-none')
      else {
        dupEl.classList.remove('d-none')
        dupEl.querySelector('span.fw-bold').textContent = `⚠️ 检测到 ${data.high_confidence_duplicates} 条宽松匹配高置信重复（≥${data.duplicate_threshold||0.65}）：`
      }
    }
    // Sample rows
    const tb = $('sql_checkSampleTbody')
    if (tb) {
      tb.innerHTML = ''
      const meta = (data.row_meta || []).slice(0, 15)
      if (!meta.length) tb.innerHTML = '<tr><td colspan="5" class="text-muted small text-center">空</td></tr>'
      else meta.forEach(r => {
        const tr = document.createElement('tr')
        tr.innerHTML = `<td>${r.stmt_idx ?? ''}</td><td>${r.row_idx ?? ''}</td><td>${escapeHtml(r.title || '')}</td><td>${escapeHtml(r.start || '')}</td><td>${escapeHtml(r.end || '')}</td>`
        tb.appendChild(tr)
      })
    }
    // 执行按钮：允许状态
    const applyBtn = $('sql_btnApply')
    if (applyBtn) applyBtn.disabled = false
  }

  const sqlOpenDuplicateModal = () => {
    if (!_sqlLatestReport || !_sqlLatestReport.high_confidence_duplicates) return
    const rows = (_sqlLatestReport.duplicates || []).filter(d => (d.score || 0) >= (_sqlLatestReport.duplicate_threshold || 0.65) && d.match && d.match.length)
    if (!rows.length) return toast('没有高置信重复明细', 'warn')
    $('sql_dupSummary').innerHTML = `共 <b>${rows.length}</b> 条你的 SQL 行命中了库内现有事件（宽松模式）。确认要继续执行，这些行也会进入去重逻辑命中 UPDATE（而不是 INSERT 新行）。`
    const tb = $('sql_dupTbody')
    tb.innerHTML = ''
    rows.forEach(d => {
      const mainMatch = (d.match || [])[0] || {}
      const tr = document.createElement('tr')
      tr.innerHTML = `
        <td>${d.stmt_idx ?? ''}-${d.row_idx ?? ''}</td>
        <td>${escapeHtml(d.title_left || '')}</td>
        <td>${escapeHtml(d.start_left || '')}</td>
        <td>${escapeHtml(mainMatch.title || '')}</td>
        <td>${escapeHtml(mainMatch.start || '')}</td>
        <td>${Number(d.score || 0).toFixed(2)}</td>
        <td><a href="index.html" target="_blank" class="btn btn-sm btn-outline-primary">打开主日历核对</a></td>`
      tb.appendChild(tr)
    })
    const m = bootstrap.Modal.getOrCreateInstance($('sqlDuplicateModal'))
    m.show()
  }

  const sqlOnCheck = async () => {
    const f = sqlReadForm()
    if (!f.sql_text.trim()) return toast('SQL 文本为空', 'error')
    const btn = $('sql_btnCheck')
    setBtn(btn, true, '检查中…')
    try {
      const r = await api('/batch_sql_check', { method: 'POST', body: f })
      const data = await r.json()
      sqlRenderReport(data)
      _sqlConfirmDup = (data.high_confidence_duplicates || 0) === 0
      _sqlConfirmForbidden = !!(data.ok)
      if (data.ok) toast(`检查通过：${data.insert_statements||0} INSERT / ${data.total_rows||0} 行 / ${data.high_confidence_duplicates||0} 宽松重复`, 'success')
      else toast(`检查未通过：${(data.forbidden||[]).length + (data.syntax_errors||[]).length + (data.col_errors||[]).length} 处错误`, 'error')
    } catch (e) {
      toast('检查失败: ' + e.message, 'error')
    } finally { setBtn(btn, false) }
  }

  const sqlOnApply = async () => {
    if (!_sqlLatestReport) return toast('请先点「SQL 语句检查」', 'error')
    const f = sqlReadForm()
    if (!f.batch_name.trim()) return toast('请填写批次名称（便于回滚时查找）', 'error')
    // 先把最新状态再拉一遍（用户可能中间改过 textarea，不允许跳检查直接执行）
    const checkBtn = $('sql_btnCheck')
    if (checkBtn && checkBtn.disabled !== true) {
      // 如果检查按钮不是 loading，强制再跑一次检查，避免用户中间改了 SQL 直接点执行
      await sqlOnCheck()
      if (!_sqlLatestReport) return
    }
    const hasErr = ((_sqlLatestReport.forbidden||[]).length + (_sqlLatestReport.syntax_errors||[]).length + (_sqlLatestReport.col_errors||[]).length) > 0
    if (hasErr && !_sqlConfirmForbidden) {
      const okForb = confirm(`有 ${(_sqlLatestReport.forbidden||[]).length + (_sqlLatestReport.syntax_errors||[]).length + (_sqlLatestReport.col_errors||[]).length} 处语法/列/语句类型被拒绝错误。真的要强制继续执行？（大概率会批量 INSERT 失败；建议先改 SQL 到检查通过）`)
      if (!okForb) return
      _sqlConfirmForbidden = true
    }
    const dupCount = _sqlLatestReport.high_confidence_duplicates || 0
    if (dupCount > 0 && !_sqlConfirmDup) {
      // 先弹重复详情 Modal，用户点 Modal 里的「我已知悉」再真正执行
      sqlOpenDuplicateModal()
      return
    }
    await sqlReallyApply({ confirm_duplicates: _sqlConfirmDup, confirm_forbidden: _sqlConfirmForbidden })
  }

  const sqlReallyApply = async (extra) => {
    const f = Object.assign(sqlReadForm(), extra || {})
    if (!f.sql_text.trim()) return toast('SQL 文本为空', 'error')
    if (!f.batch_name.trim()) return toast('请填写批次名称', 'error')
    const btn = $('sql_btnApply')
    setBtn(btn, true, '执行入库中…')
    try {
      const r = await api('/batch_sql_apply', { method: 'POST', body: f })
      const data = await r.json()
      if (!r.ok || !data.ok) {
        if (r.status === 409 && data.report) {
          // 后端强制拦：需要 confirm_forbidden / confirm_duplicates
          sqlRenderReport(data.report)
          if (data.error && String(data.error).includes('duplicates_need_confirm')) { sqlOpenDuplicateModal(); return }
          if (data.error && String(data.error).includes('forbidden_or_error_need_confirm')) {
            const ok = confirm('后端强制拦截：有错误语句 / 不允许的列。点确定 = 我已知悉，仍尝试执行（可能全部或部分失败）')
            if (!ok) return
            _sqlConfirmForbidden = true
            await sqlReallyApply({ confirm_duplicates: _sqlConfirmDup, confirm_forbidden: true })
            return
          }
        }
        throw new Error(data.error || `HTTP ${r.status}`)
      }
      toast(`SQL 批次执行成功：生成${data.generated} / 入库${data.inserted} / 去重${data.dedup} / 宽松重复${data.high_confidence_duplicates||0}。batch_id=${data.batch_id}`, 'success')
      _sqlConfirmDup = false
      _sqlConfirmForbidden = false
      await loadBatches()
      const tabs = bootstrap.Tab.getOrCreateInstance($('tab-batches'))
      tabs.show()
    } catch (e) {
      toast('SQL 批次执行失败: ' + e.message, 'error')
    } finally { setBtn(btn, false) }
  }

  const sqlOnDownload = () => {
    const f = sqlReadForm()
    if (!f.sql_text.trim()) return toast('SQL 文本为空', 'error')
    const head = `-- 下载时间：${new Date().toLocaleString('zh-CN', { timeZone: 'Asia/Shanghai' })}\n-- 批次名：${f.batch_name || '(未命名)'}\n-- 标记：${f.skip_external_sync ? '不联动下游 ' : ''}${f.mark_completed ? '全部已完成' : ''}\n-- 注意：仅支持 INSERT INTO events(...)\n\n`
    const blob = new Blob(['\ufeff' + head + f.sql_text], { type: 'text/plain;charset=utf-8' })
    const a = document.createElement('a')
    a.href = URL.createObjectURL(blob)
    a.download = `calendar_events_sql_${tsFile()}.sql`
    a.click()
    setTimeout(() => URL.revokeObjectURL(a.href), 1500)
    toast('SQL 已下载（UTF-8 BOM，避免中文乱码）', 'info')
  }

  const badgeFor = (st) => {
    const map = { draft: 'bg-secondary', inserting: 'bg-primary', inserted: 'bg-success', rolled_back: 'bg-dark', partial: 'bg-warning' }
    return `<span class="badge ${map[st] || 'bg-light text-dark'}">${st}</span>`
  }
  let batchListData = []
  const loadBatches = async () => {
    if (!$('batch_search')) return
    const q = encodeURIComponent($('batch_search').value || '')
    const r = await api(`/batches?q=${q}&limit=200`)
    const data = (await r.json()).data || []
    batchListData = data
    const tb = $('batch_listTable').querySelector('tbody')
    tb.innerHTML = ''
    if (!data.length) { tb.innerHTML = '<tr><td colspan="7" class="text-center text-muted small">暂无批次</td></tr>'; return }
    data.forEach(b => {
      const tr = document.createElement('tr')
      tr.innerHTML = `
        <td><strong>${b.title || '(未命名)'}</strong><br><small class="text-muted">${b.id.slice(0, 10)}…</small></td>
        <td>${b.summary || '-'}<br>${b.skip_external_sync ? '<small class="text-secondary">⏸不联动下游</small>' : ''}</td>
        <td>${b.range_start || ''}<br>~ ${b.range_end || ''}</td>
        <td><span class="text-primary">${b.generated}</span> / <span class="text-success">${b.inserted}</span> / <span class="text-secondary">${b.dedup}</span> / <span class="text-danger">${b.rolled_back}</span><br><small class="text-muted">预重${b.pre_existing}</small></td>
        <td>${badgeFor(b.status)}</td>
        <td><small>${(b.created_at || '').slice(0, 16).replace('T', ' ')}</small></td>
        <td>
          <div class="btn-group btn-group-sm">
            <button type="button" class="btn btn-outline-info" data-act="view">👁 查看</button>
            <button type="button" class="btn btn-outline-primary" data-act="copy">📋 复制</button>
            <button type="button" class="btn btn-outline-warning" data-act="rollback">♻ 回滚</button>
            <button type="button" class="btn btn-outline-secondary" data-act="export">💾 导出</button>
          </div>
        </td>`
      tr.querySelectorAll('[data-act]').forEach(btnel => btnel.addEventListener('click', (ev) => onBatchAction(ev.currentTarget.dataset.act, b.id)))
      tb.appendChild(tr)
    })
  }
  const onBatchAction = async (act, id) => {
    if (act === 'view') return showDetail(id)
    if (act === 'export') { window.open(`/api/calendar_reminder/batch/export_sql?id=${encodeURIComponent(id)}`, '_blank', 'noopener'); return }
    if (act === 'copy') {
      const found = batchListData.find(b => b.id === id)
      if (!found) return
      fillForm(Object.assign({}, found.params, { batchName: (found.title || '') + ' (复制)' }))
      const tabs = bootstrap.Tab.getOrCreateInstance($('tab-generator'))
      tabs.show()
      toast('参数已填回生成器，修改后即可预览新批次', 'info')
      return
    }
    if (act === 'rollback') {
      const hard = confirm('点"确定"=逻辑删除（推荐，deleted=1）；点"取消"=改为物理删除\n（逻辑删除保留行、方便二次确认；物理删不可恢复。）') === false
      const action = hard ? '物理删除' : '逻辑删除'
      if (!confirm(`确认对批次 ${id.slice(0, 10)}… 执行 ${action} 回滚？`)) return
      const r = await api('/batch/rollback', { method: 'POST', body: { id, hard } })
      const j = await r.json()
      if (!j.ok) return toast('回滚失败: ' + j.error, 'error')
      toast(`回滚完成：${j.rolled_back} 条 ${j.hard ? '(硬删)' : '(软删)'}`, 'success')
      loadBatches()
    }
  }
  const showDetail = async (id) => {
    const r = await api(`/batch/detail?id=${encodeURIComponent(id)}`)
    const j = await r.json()
    if (!j.ok) return toast('detail failed: ' + j.error, 'error')
    const b = j.batch
    const counts = b.counts || { active: 0, deleted: 0 }
    const rows = (b.sample || []).map(s => `<tr><td>${s.start || ''}</td><td>${s.end || ''}</td><td>${s.remindAt || ''}</td><td>${s.title || ''}</td><td>${s.completed ? '✅' : ''}${s.deleted ? '🗑' : ''}</td></tr>`).join('')
    const diags = j.diagnostics || {}
    const diagBtn = (label, keyName) => `<button class="btn btn-sm btn-outline-secondary m-1" type="button" data-diag-key="${keyName}">${label}（复制）</button>`
    $('batch_detailBody').innerHTML = `
      <h6>${b.title || '(未命名)'} <small class="text-muted ms-2">id: ${b.id}</small></h6>
      <p>模式：${b.meta && b.meta.summary} · 范围 ${b.meta && b.meta.rangeStart} ~ ${b.meta && b.meta.rangeEnd} · 创建 ${(b.created_at || '').slice(0,19).replace('T',' ')}</p>
      <p>生成：${b.generated_count}，入库：${b.inserted_count}，去重：${b.dedup_count}，预重：${b.pre_existing_count}，回滚：${b.rollback_count}，状态：${badgeFor(b.status)} ${b.skip_external_sync ? '<span class="badge bg-secondary">不联动下游</span>':''}</p>
      <p>当前表计数：<span class="text-success">active ${counts.active}</span> / <span class="text-danger">deleted ${counts.deleted}</span></p>
      <div class="mb-2"><strong>诊断 SQL（一键复制）：</strong>
        <div class="batch-detail-diag">
          ${diagBtn('按 batch_id 清单', 'by_batch_id')}
          ${diagBtn('按 batch_id 计数', 'counts_by_batch')}
          ${diagBtn('孤儿（batch_id 存在但 calendar_batches 中无记录）检查', 'orphans_check')}
        </div>
      </div>
      <div class="mb-2"><strong>样例（前 30 条）：</strong></div>
      <div class="table-responsive"><table class="table table-sm table-hover"><thead><tr><th>开始</th><th>结束</th><th>提醒</th><th>标题</th><th>状态</th></tr></thead><tbody>${rows || '<tr><td colspan="5" class="text-muted small text-center">空</td></tr>'}</tbody></table></div>
    `
    $('batch_detailBody').querySelectorAll('[data-diag-key]').forEach(bx => bx.addEventListener('click', async () => {
      const k = bx.getAttribute('data-diag-key') || ''
      const ok = await copy(diags[k] || '')
      toast(ok ? '已复制到剪贴板' : '复制失败（可手动选取文本复制）', ok ? 'success' : 'error')
    }))
    const m = bootstrap.Modal.getOrCreateInstance($('batchDetailModal'))
    m.show()
  }

  const openMainWindow = () => {
    try { window.open('index.html', '_blank', 'noopener') } catch {}
  }

  document.addEventListener('DOMContentLoaded', () => {
    // --- 独立页面初始化：如果是 batch_tool.html ---
    const mode = $('batch_mode')
    if (mode) {
      refreshModeVisibility()
      mode.addEventListener('change', refreshModeVisibility)
    }
    const backBtn = $('btnBackToMain')
    if (backBtn) backBtn.addEventListener('click', openMainWindow)
    const topReload = $('btnReload')
    if (topReload) topReload.addEventListener('click', loadBatches)
    const pb = $('batch_btnPreview'), ab = $('batch_btnApply'), db = $('batch_btnDownload')
    if (pb) pb.addEventListener('click', onPreview)
    if (ab) ab.addEventListener('click', onApply)
    if (db) db.addEventListener('click', onDownload)
    const tabBatches = $('tab-batches')
    if (tabBatches) tabBatches.addEventListener('shown.bs.tab', loadBatches)
    const rf = $('batch_refresh')
    if (rf) rf.addEventListener('click', loadBatches)
    const search = $('batch_search')
    if (search) {
      let _t = null
      search.addEventListener('input', () => { clearTimeout(_t); _t = setTimeout(loadBatches, 280) })
    }
    // 独立页面：默认就初始化一次
    if (mode) {
      latestPreview = null
      // 默认时间范围：本月 1 号起 ~ 今年 12 月 31 日止
      if (!$('batch_rangeStart').value) {
        const d = new Date()
        const pad = (n) => String(n).padStart(2, '0')
        $('batch_rangeStart').value = `${d.getFullYear()}-${pad(d.getMonth() + 1)}-01`
        $('batch_rangeEnd').value = `${d.getFullYear()}-12-31`
      }
    }
    // SQL Tab 绑定
    const sqlCheck = $('sql_btnCheck')
    const sqlApply = $('sql_btnApply')
    const sqlDownload = $('sql_btnDownload')
    if (sqlCheck) sqlCheck.addEventListener('click', sqlOnCheck)
    if (sqlApply) sqlApply.addEventListener('click', sqlOnApply)
    if (sqlDownload) sqlDownload.addEventListener('click', sqlOnDownload)
    const dupDetailBtn = $('sql_dupDetail')
    if (dupDetailBtn) dupDetailBtn.addEventListener('click', sqlOpenDuplicateModal)
    const dupConfirmBtn = $('sql_dupConfirm')
    if (dupConfirmBtn) dupConfirmBtn.addEventListener('click', async () => {
      _sqlConfirmDup = true
      await sqlReallyApply({ confirm_duplicates: true, confirm_forbidden: _sqlConfirmForbidden })
    })
    const dupCancelBtn = $('sql_dupCancel')
    if (dupCancelBtn) dupCancelBtn.addEventListener('click', () => { toast('已取消，请回去改 SQL 再试', 'warn') })
  })

  // 暴露给 batch_tool.html 里 onclick 调用（loadBatches）
  window.CalendarBatchTool = { loadBatches, fillForm, readForm }
})()