import { useState } from 'react'
import { toast } from 'sonner'
import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query'
import { Calculator, Info, Check, Settings as SettingsIcon, Plus, History, Download } from 'lucide-react'
import api from '../lib/api'
import Card from '../components/ui/Card'
import Button from '../components/ui/Button'
import { Input, Label } from '../components/ui/Input'

// 金额格式化：保留两位小数 + 千分位
const fmt = (n: number) => (n || 0).toLocaleString('zh-CN', { minimumFractionDigits: 2, maximumFractionDigits: 2 })

export default function SocialInsurance() {
  const queryClient = useQueryClient()
  const [tab, setTab] = useState<'social' | 'housing' | 'monthly'>('social')
  const [city, setCity] = useState<string>('北京')
  const [base, setBase] = useState(8000)
  const [showNewVersion, setShowNewVersion] = useState(false)
  const [showVersions, setShowVersions] = useState(false)
  const [showAdjust, setShowAdjust] = useState(false)
  const [adjustData, setAdjustData] = useState<any>(null)
  const [editItems, setEditItems] = useState<Record<string, number>>({})
  const [editingId, setEditingId] = useState<string | null>(null)
  const [monthlyMonth, setMonthlyMonth] = useState(new Date().toISOString().slice(0, 7))
  const [newVersion, setNewVersion] = useState<any>({
    effectiveFrom: new Date().toISOString().slice(0, 7),
    city: '北京',
    pensionOrg: 16, pensionEmp: 8,
    medicalOrg: 9.8, medicalEmp: 2,
    unemploymentOrg: 0.5, unemploymentEmp: 0.5,
    injuryOrg: 0.2, maternityOrg: 0.8,
    baseMin: 6326, baseMax: 33891,
  })
  const [newHousingVersion, setNewHousingVersion] = useState<any>({
    effectiveFrom: new Date().toISOString().slice(0, 7),
    city: '北京',
    housingOrg: 12, housingEmp: 12,
    baseMin: 6326, baseMax: 33891,
  })

  // 获取城市列表
  const { data: cities = [] } = useQuery<string[]>({
    queryKey: ['social-config-cities'],
    queryFn: async () => {
      const res = await api.get('/social/config/cities') as any
      return res.data
    },
  })

  const { data: config, isLoading: configLoading } = useQuery<any>({
    queryKey: ['social-config', city],
    queryFn: async () => {
      const res = await api.get('/social/config', { params: { city } }) as any
      return res.data
    },
  })

  const { data: housingConfig, isLoading: housingLoading } = useQuery<any>({
    queryKey: ['housing-config', city],
    queryFn: async () => {
      const res = await api.get('/social/housing-config', { params: { city } }) as any
      return res.data
    },
  })

  const { data: versions } = useQuery<any[]>({
    queryKey: ['social-config-versions', city],
    queryFn: async () => {
      const res = await api.get('/social/config/versions', { params: { city } }) as any
      return res.data
    },
    enabled: showVersions && tab === 'social',
  })

  const { data: housingVersions } = useQuery<any[]>({
    queryKey: ['housing-config-versions'],
    queryFn: async () => {
      const res = await api.get('/social/housing-config/versions') as any
      return res.data
    },
    enabled: showVersions && tab === 'housing',
  })

  const { data: monthlyChanges } = useQuery<any>({
    queryKey: ['monthly-changes', monthlyMonth],
    queryFn: async () => {
      const [socialRes, housingRes, socialActiveRes, housingActiveRes] = await Promise.all([
        api.get('/social/monthly-changes', { params: { month: monthlyMonth } }) as any,
        api.get('/social/housing/monthly-changes', { params: { month: monthlyMonth } }) as any,
        api.get('/social/active-declaration', { params: { month: monthlyMonth } }) as any,
        api.get('/social/housing/active-declaration', { params: { month: monthlyMonth } }) as any,
      ])
      return {
        social: socialRes.data,
        housing: housingRes.data,
        socialActive: socialActiveRes.data,
        housingActive: housingActiveRes.data,
      }
    },
    enabled: tab === 'monthly',
  })

  const { data: result, mutate: calcMutate, isPending } = useMutation<any>({
    mutationFn: async () => {
      const res = await api.post('/social/calculate', { base }) as any
      return res.data
    },
  })

  const { data: housingResult, mutate: calcHousingMutate, isPending: housingCalcPending } = useMutation<any>({
    mutationFn: async () => {
      const res = await api.post('/social/housing-calculate', { base }) as any
      return res.data
    },
  })

  const createVersionMutation = useMutation({
    mutationFn: (data: any) => api.post('/social/config/versions', data),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['social-config'] })
      queryClient.invalidateQueries({ queryKey: ['social-config-versions'] })
      setShowNewVersion(false)
      toast.success('新版本已创建，旧版本已自动归档')
    },
  })

  const createHousingVersionMutation = useMutation({
    mutationFn: (data: any) => api.post('/social/housing-config/versions', data),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['housing-config'] })
      queryClient.invalidateQueries({ queryKey: ['housing-config-versions'] })
      setShowNewVersion(false)
      toast.success('公积金新版本已创建，旧版本已自动归档')
    },
  })

  const previewAdjustMutation = useMutation({
    mutationFn: async () => {
      const res = await api.get(`/social/config/${config?.id}/adjust-preview`) as any
      return res.data
    },
    onSuccess: (data) => {
      setAdjustData(data)
      setShowAdjust(true)
    },
  })

  const previewHousingAdjustMutation = useMutation({
    mutationFn: async () => {
      const res = await api.get(`/social/housing-config/${housingConfig?.id}/adjust-preview`) as any
      return res.data
    },
    onSuccess: (data) => {
      setAdjustData(data)
      setShowAdjust(true)
    },
  })

  const applyAdjustMutation = useMutation({
    mutationFn: (data: { items: { employeeId: string; newBase: number }[] }) =>
      api.post(`/social/config/${config?.id}/adjust-apply`, data),
    onSuccess: (res: any) => {
      queryClient.invalidateQueries({ queryKey: ['social-config'] })
      queryClient.invalidateQueries({ queryKey: ['social-config-versions'] })
      setShowAdjust(false)
      setAdjustData(null)
      setEditItems({})
      setEditingId(null)
      toast.success(`调整完成，共调整 ${res.data?.adjusted || 0} 名员工的社保基数`)
    },
  })

  const applyHousingAdjustMutation = useMutation({
    mutationFn: (data: { items: { employeeId: string; newBase: number }[] }) =>
      api.post(`/social/housing-config/${housingConfig?.id}/adjust-apply`, data),
    onSuccess: (res: any) => {
      queryClient.invalidateQueries({ queryKey: ['housing-config'] })
      queryClient.invalidateQueries({ queryKey: ['housing-config-versions'] })
      setShowAdjust(false)
      setAdjustData(null)
      setEditItems({})
      setEditingId(null)
      toast.success(`调整完成，共调整 ${res.data?.adjusted || 0} 名员工的公积金基数`)
    },
  })

  const resetAdjustMutation = useMutation({
    mutationFn: () => api.post(`/social/config/${config?.id}/reset-adjustment`, { city }),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['social-config', city] })
      queryClient.invalidateQueries({ queryKey: ['social-config-versions', city] })
      toast.success('社保基数调整已重置，可以重新调整')
    },
  })

  const resetHousingAdjustMutation = useMutation({
    mutationFn: () => api.post(`/social/housing-config/${housingConfig?.id}/reset-adjustment`, { city }),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['housing-config', city] })
      queryClient.invalidateQueries({ queryKey: ['housing-config-versions', city] })
      toast.success('公积金基数调整已重置，可以重新调整')
    },
  })

  const handleExportCSV = (type: 'social' | 'housing', data: any) => {
    if (!data?.items?.length) return
    const headers = type === 'social'
      ? ['姓名', '部门', '社保基数', '开始年月', '截止年月', '变更类型']
      : ['姓名', '部门', '公积金基数', '开始年月', '截止年月', '变更类型']
    const rows = data.items.map((i: any) => [
      i.name, i.department, i.base, i.startMonth, i.endMonth || '', i.changeType
    ])
    const csv = [headers, ...rows].map(r => r.join(',')).join('\n')
    const blob = new Blob(['\ufeff' + csv], { type: 'text/csv;charset=utf-8' })
    const url = URL.createObjectURL(blob)
    const a = document.createElement('a')
    a.href = url
    a.download = `${type === 'social' ? '社保' : '公积金'}_${data.month || monthlyMonth}.csv`
    a.click()
    URL.revokeObjectURL(url)
  }

  const isHousing = tab === 'housing'
  const activeConfig = isHousing ? housingConfig : config
  const activeVersions = isHousing ? housingVersions : versions
  const activePreviewMut = isHousing ? previewHousingAdjustMutation : previewAdjustMutation
  const activeApplyMut = isHousing ? applyHousingAdjustMutation : applyAdjustMutation
  const activeCreateMut = isHousing ? createHousingVersionMutation : createVersionMutation
  const activeNewVersion = isHousing ? newHousingVersion : newVersion
  const activeSetNewVersion = isHousing ? setNewHousingVersion : setNewVersion

  return (
    <div className="space-y-3">
      <div className="flex items-center justify-between">
        <h1 className="text-xs font-medium">社保公积金</h1>
        <div className="flex gap-2">
          {tab !== 'monthly' && (
            <>
              <Button variant="secondary" size="sm" onClick={() => setShowVersions(!showVersions)}>
                <History className="w-4 h-4 mr-1" />
                {showVersions ? '收起历史' : '版本历史'}
              </Button>
              <Button size="sm" onClick={() => setShowNewVersion(!showNewVersion)}>
                <Plus className="w-4 h-4 mr-1" />新建版本
              </Button>
            </>
          )}
        </div>
      </div>

      {/* Tab 切换 + 城市选择 */}
      <div className="flex items-center gap-4 border-b">
        {(['social', 'housing', 'monthly'] as const).map((t) => (
          <button
            key={t}
            className={`px-4 py-2 text-xs font-medium border-b-2 transition-colors ${
              tab === t ? 'border-primary text-primary' : 'border-transparent text-gray-500 hover:text-gray-700'
            }`}
            onClick={() => { setTab(t); setShowVersions(false); setShowNewVersion(false); setShowAdjust(false); setAdjustData(null); setEditItems({}); setEditingId(null) }}
          >
            {t === 'social' ? '社保' : t === 'housing' ? '公积金' : '月度办理'}
          </button>
        ))}
        <div className="flex items-center gap-2 ml-auto">
          <label className="text-xs text-gray-500">城市:</label>
          <select
            className="text-xs border rounded px-2 py-1.5"
            value={city}
            onChange={(e) => setCity(e.target.value)}
          >
            {cities.length > 0 ? (
              cities.map((c) => <option key={c} value={c}>{c}</option>)
            ) : (
              <option value="北京">北京</option>
            )}
          </select>
        </div>
      </div>

      {/* ========== 社保 / 公积金 Tab ========== */}
      {tab !== 'monthly' && (
        (isHousing ? housingLoading : configLoading) ? (
          <Card><div className="text-center py-8 text-gray-500">加载中...</div></Card>
        ) : activeConfig ? (
        <Card>
          <div className="flex items-center justify-between mb-3">
            <div className="flex items-center gap-2">
              <span className="px-2 py-0.5 rounded text-xs bg-green-50 text-safe">当前生效</span>
              <span className="text-xs text-gray-500">生效月份：{activeConfig.effectiveFrom}</span>
              <span className="text-xs text-gray-500">· {activeConfig.city}</span>
              {activeConfig.adjustmentDone && (
                <span className="px-2 py-0.5 rounded text-xs bg-gray-100 text-gray-500">已调整员工基数</span>
              )}
            </div>
            <div className="flex items-center gap-2">
              {activeConfig.adjustmentDone && (
                <Button
                  variant="secondary"
                  size="sm"
                  onClick={() => {
                    if (window.confirm(`确定要重置${isHousing ? '公积金' : '社保'}基数调整吗？重置后可重新调整。`)) {
                      isHousing ? resetHousingAdjustMutation.mutate() : resetAdjustMutation.mutate()
                    }
                  }}
                  disabled={isHousing ? resetHousingAdjustMutation.isPending : resetAdjustMutation.isPending}
                >
                  <SettingsIcon className="w-4 h-4 mr-1" />
                  {isHousing ? resetHousingAdjustMutation.isPending ? '重置中...' : '重置调整' : resetAdjustMutation.isPending ? '重置中...' : '重置调整'}
                </Button>
              )}
              <Button
                variant="secondary"
                size="sm"
                onClick={() => activePreviewMut.mutate()}
                disabled={activeConfig.adjustmentDone || activePreviewMut.isPending}
              >
                <SettingsIcon className="w-4 h-4 mr-1" />
                {activeConfig.adjustmentDone ? '已调整' : activePreviewMut.isPending ? '加载中...' : `调整员工${isHousing ? '公积金' : '社保'}基数`}
              </Button>
            </div>
          </div>
          {isHousing ? (
            <div className="grid md:grid-cols-4 gap-3 text-xs">
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">缴费基数下限</span><span className="font-medium">¥{fmt(activeConfig.baseMin)}</span></div>
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">缴费基数上限</span><span className="font-medium">¥{fmt(activeConfig.baseMax)}</span></div>
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">公积金(企业)</span><span className="font-medium">{activeConfig.housingOrg}%</span></div>
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">公积金(个人)</span><span className="font-medium">{activeConfig.housingEmp}%</span></div>
            </div>
          ) : (
            <div className="grid md:grid-cols-4 gap-3 text-xs">
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">缴费基数下限</span><span className="font-medium">¥{fmt(activeConfig.baseMin)}</span></div>
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">缴费基数上限</span><span className="font-medium">¥{fmt(activeConfig.baseMax)}</span></div>
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">养老(企业/个人)</span><span className="font-medium">{activeConfig.pensionOrg}% / {activeConfig.pensionEmp}%</span></div>
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">医疗(企业/个人)</span><span className="font-medium">{activeConfig.medicalOrg}% / {activeConfig.medicalEmp}%</span></div>
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">失业(企业/个人)</span><span className="font-medium">{activeConfig.unemploymentOrg}% / {activeConfig.unemploymentEmp}%</span></div>
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">工伤(企业)</span><span className="font-medium">{activeConfig.injuryOrg}%</span></div>
              <div className="flex justify-between border-b pb-1.5"><span className="text-gray-500">生育(企业)</span><span className="font-medium">{activeConfig.maternityOrg}%</span></div>
            </div>
          )}
        </Card>
        ) : (
          <Card><div className="text-center py-8 text-gray-500">该城市暂无{isHousing ? '公积金' : '社保'}配置，请点击「新建版本」创建</div></Card>
        )
      )}

      {/* 调整预览 */}
      {tab !== 'monthly' && showAdjust && adjustData && (
        <Card>
          <h3 className="text-xs font-medium mb-3 flex items-center gap-2">
            <SettingsIcon className="w-4 h-4" />员工{isHousing ? '公积金' : '社保'}基数调整
          </h3>
          <div className="bg-blue-50 text-blue-700 text-xs px-3 py-2 rounded-md flex items-start gap-2 mb-3">
            <Info className="w-4 h-4 mt-0.5 shrink-0" />
            <div>
              按当前版本基数上下限（¥{fmt(adjustData.baseMin)} ~ ¥{fmt(adjustData.baseMax)}）调整全部在职员工{isHousing ? '公积金' : '社保'}缴费基数。
              建议基数=上年月均工资按上下限裁剪。您可逐行修改，也可点击「采用建议值」或「保持原基数」。确认后保存，此操作只能执行一次。
            </div>
          </div>
          <div className="flex items-center gap-2 mb-3">
            <Button variant="secondary" size="sm" onClick={() => {
              const newEdits: Record<string, number> = {}
              adjustData.items.forEach((i: any) => { newEdits[i.employeeId] = i.suggestedBase })
              setEditItems(newEdits)
            }}>
              <Check className="w-3.5 h-3.5 mr-1" />全部采用建议值
            </Button>
            <Button variant="secondary" size="sm" onClick={() => {
              const newEdits: Record<string, number> = {}
              adjustData.items.forEach((i: any) => { newEdits[i.employeeId] = i.oldBase })
              setEditItems(newEdits)
            }}>
              全部保持原基数
            </Button>
            <span className="text-xs text-gray-400">共 {adjustData.total} 名员工</span>
          </div>
          <div className="overflow-x-auto mb-4">
            <table className="w-full text-xs">
              <thead>
                <tr className="border-b text-gray-500">
                  <th className="py-2 text-left">姓名</th>
                  <th className="py-2 text-left">部门</th>
                  <th className="py-2 text-right">上年月均</th>
                  <th className="py-2 text-right">{isHousing ? '公积金' : '社保'}基数(当前)</th>
                  <th className="py-2 text-right">{isHousing ? '公积金' : '社保'}基数(建议)</th>
                  <th className="py-2 text-right">{isHousing ? '公积金' : '社保'}基数(新)</th>
                </tr>
              </thead>
              <tbody>
                {adjustData.items.map((item: any) => {
                  const edit = editItems[item.employeeId]
                  const newBase = edit ?? item.suggestedBase
                  const changed = newBase !== item.oldBase
                  return (
                    <tr key={item.employeeId} className="border-b last:border-0">
                      <td className="py-1.5">{item.name}</td>
                      <td className="py-1.5 text-gray-500">{item.department}</td>
                      <td className="py-1.5 text-right text-gray-400">¥{fmt(item.avgSalary)}</td>
                      <td className="py-1.5 text-right text-gray-400">¥{fmt(item.oldBase)}</td>
                      <td className="py-1.5 text-right text-gray-500">¥{fmt(item.suggestedBase)}</td>
                      <td className="py-1.5 text-right">
                        {editingId === item.employeeId ? (
                          <Input type="number" step="0.01" min="0" className="!w-28 text-right text-xs" value={newBase}
                            onChange={(e) => setEditItems({ ...editItems, [item.employeeId]: Number(e.target.value) || 0 })}
                            onBlur={() => setEditingId(null)}
                            autoFocus />
                        ) : (
                          <span className="cursor-text inline-block !w-28 text-right"
                            onClick={() => setEditingId(item.employeeId)}>
                            ¥{fmt(newBase)}
                          </span>
                        )}
                        {changed && <span className="text-warning ml-1">●</span>}
                      </td>
                    </tr>
                  )
                })}
              </tbody>
            </table>
          </div>
          <div className="flex gap-2">
            <Button onClick={() => {
              const items = adjustData.items.map((i: any) => ({ employeeId: i.employeeId, newBase: editItems[i.employeeId] ?? i.suggestedBase }))
              activeApplyMut.mutate({ items })
            }} disabled={activeApplyMut.isPending}>
              {activeApplyMut.isPending ? '保存中...' : '确认保存'}
            </Button>
            <Button variant="secondary" onClick={() => { setShowAdjust(false); setAdjustData(null); setEditItems({}); setEditingId(null) }}>取消</Button>
          </div>
        </Card>
      )}

      {/* 版本历史 */}
      {tab !== 'monthly' && showVersions && (
        <Card>
          <h3 className="text-xs font-medium mb-3 flex items-center gap-2"><History className="w-4 h-4" />{isHousing ? '公积金' : '社保'}版本历史</h3>
          {!activeVersions || activeVersions.length === 0 ? (
            <div className="text-center py-4 text-gray-400 text-xs">暂无版本记录</div>
          ) : (
            <div className="overflow-x-auto">
              <table className="w-full text-xs">
                <thead>
                  <tr className="border-b text-gray-500">
                    <th className="py-2 text-left">生效月份</th>
                    <th className="py-2 text-left">失效月份</th>
                    <th className="py-2 text-left">城市</th>
                    <th className="py-2 text-right">基数下限</th>
                    <th className="py-2 text-right">基数上限</th>
                    {isHousing ? (
                      <th className="py-2 text-right">公积金%</th>
                    ) : (
                      <>
                        <th className="py-2 text-right">养老%</th>
                        <th className="py-2 text-right">医疗%</th>
                      </>
                    )}
                    <th className="py-2 text-center">状态</th>
                  </tr>
                </thead>
                <tbody>
                  {activeVersions.map((v: any) => (
                    <tr key={v.id} className="border-b last:border-0 hover:bg-gray-50">
                      <td className="py-2">{v.effectiveFrom}</td>
                      <td className="py-2 text-gray-400">{v.effectiveTo || '—'}</td>
                      <td className="py-2">{v.city}</td>
                      <td className="py-2 text-right">¥{fmt(v.baseMin)}</td>
                      <td className="py-2 text-right">¥{fmt(v.baseMax)}</td>
                      {isHousing ? (
                        <td className="py-2 text-right text-gray-500">{v.housingOrg}/{v.housingEmp}</td>
                      ) : (
                        <>
                          <td className="py-2 text-right text-gray-500">{v.pensionOrg}/{v.pensionEmp}</td>
                          <td className="py-2 text-right text-gray-500">{v.medicalOrg}/{v.medicalEmp}</td>
                        </>
                      )}
                      <td className="py-2 text-center">
                        {v.isCurrent ? <span className="px-2 py-0.5 rounded bg-green-50 text-safe">当前</span> : <span className="px-2 py-0.5 rounded bg-gray-100 text-gray-400">历史</span>}
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            </div>
          )}
        </Card>
      )}

      {/* 新建版本 */}
      {tab !== 'monthly' && showNewVersion && (
        <Card>
          <h3 className="text-xs font-medium mb-3 flex items-center gap-2"><Plus className="w-4 h-4" />新建{isHousing ? '公积金' : '社保'}配置版本</h3>
          <div className="space-y-3">
            <div className="bg-blue-50 text-blue-700 text-xs px-3 py-2 rounded-md flex items-start gap-2">
              <Info className="w-4 h-4 mt-0.5 shrink-0" />
              <div>新版本生效后，当前版本将自动归档。发薪批次计算时按批次月份匹配对应版本的配置。通常每年7月调基时新建版本。</div>
            </div>
            <div className="grid md:grid-cols-3 gap-3">
              <div><Label>生效月份</Label><Input type="month" value={activeNewVersion.effectiveFrom} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, effectiveFrom: e.target.value })} /></div>
              <div><Label>城市</Label><Input value={activeNewVersion.city} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, city: e.target.value })} /></div>
              <div><Label>缴费基数下限</Label><Input type="number" value={activeNewVersion.baseMin} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, baseMin: Number(e.target.value) })} /></div>
              <div><Label>缴费基数上限</Label><Input type="number" value={activeNewVersion.baseMax} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, baseMax: Number(e.target.value) })} /></div>
            </div>
            {isHousing ? (
              <div className="grid md:grid-cols-2 gap-3">
                <div><Label>公积金(企业%)</Label><Input type="number" step="0.1" value={activeNewVersion.housingOrg} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, housingOrg: Number(e.target.value) })} /></div>
                <div><Label>公积金(个人%)</Label><Input type="number" step="0.1" value={activeNewVersion.housingEmp} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, housingEmp: Number(e.target.value) })} /></div>
              </div>
            ) : (
              <div className="grid md:grid-cols-4 gap-3">
                <div><Label>养老(企业%)</Label><Input type="number" step="0.1" value={activeNewVersion.pensionOrg} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, pensionOrg: Number(e.target.value) })} /></div>
                <div><Label>养老(个人%)</Label><Input type="number" step="0.1" value={activeNewVersion.pensionEmp} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, pensionEmp: Number(e.target.value) })} /></div>
                <div><Label>医疗(企业%)</Label><Input type="number" step="0.1" value={activeNewVersion.medicalOrg} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, medicalOrg: Number(e.target.value) })} /></div>
                <div><Label>医疗(个人%)</Label><Input type="number" step="0.1" value={activeNewVersion.medicalEmp} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, medicalEmp: Number(e.target.value) })} /></div>
                <div><Label>失业(企业%)</Label><Input type="number" step="0.1" value={activeNewVersion.unemploymentOrg} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, unemploymentOrg: Number(e.target.value) })} /></div>
                <div><Label>失业(个人%)</Label><Input type="number" step="0.1" value={activeNewVersion.unemploymentEmp} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, unemploymentEmp: Number(e.target.value) })} /></div>
                <div><Label>工伤(企业%)</Label><Input type="number" step="0.1" value={activeNewVersion.injuryOrg} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, injuryOrg: Number(e.target.value) })} /></div>
                <div><Label>生育(企业%)</Label><Input type="number" step="0.1" value={activeNewVersion.maternityOrg} onChange={(e) => activeSetNewVersion({ ...activeNewVersion, maternityOrg: Number(e.target.value) })} /></div>
              </div>
            )}
            <div className="flex gap-2">
              <Button onClick={() => activeCreateMut.mutate(activeNewVersion)} disabled={activeCreateMut.isPending}>
                {activeCreateMut.isPending ? '保存中...' : '创建版本'}
              </Button>
              <Button variant="secondary" onClick={() => setShowNewVersion(false)}>取消</Button>
            </div>
          </div>
        </Card>
      )}

      {/* 试算工具 */}
      {tab !== 'monthly' && (
        <div className="grid md:grid-cols-2 gap-4">
          <Card>
            <h2 className="text-xs font-medium mb-3">{isHousing ? '公积金' : '社保'}试算</h2>
            <div className="space-y-3">
              <div>
                <Label>缴费基数（月工资）</Label>
                <Input type="number" value={base} onChange={(e) => setBase(Number(e.target.value) || 0)} />
              </div>
              <Button onClick={() => isHousing ? calcHousingMutate() : calcMutate()} disabled={isHousing ? housingCalcPending : isPending}>
                <Calculator className="w-4 h-4 mr-1" />
                {(isHousing ? housingCalcPending : isPending) ? '计算中...' : '开始计算'}
              </Button>
              {activeConfig && (
                <div className="text-xs text-gray-400">
                  当前配置：{activeConfig.city} | 基数范围 {fmt(activeConfig.baseMin)}~{fmt(activeConfig.baseMax)}
                </div>
              )}
            </div>
          </Card>

          <Card>
            <h2 className="text-xs font-medium mb-3 flex items-center gap-2"><Calculator className="w-4 h-4" />计算结果</h2>
              {(() => {
                const r = isHousing ? housingResult : result
                if (!r) return <div className="text-gray-400 text-xs">点击「开始计算」查看结果</div>
                return (
                  <div className="space-y-3">
                    <div className="text-xs text-gray-500">
                      缴费基数：<span className="text-gray-900 font-medium">¥{fmt(r.actualBase)}</span>
                      {r.capped && <span className="text-warning ml-2">（已封顶）</span>}
                      {r.floored && <span className="text-warning ml-2">（已保底）</span>}
                      {r.configVersion && <span className="text-gray-400 ml-2">| 配置版本：{r.configVersion}</span>}
                    </div>
                    <div className="overflow-x-auto">
                      <table className="w-full text-xs">
                        <thead>
                          <tr className="border-b text-left text-gray-500">
                            <th className="py-1.5">险种</th>
                            <th className="py-1.5 text-right">企业%</th>
                            <th className="py-1.5 text-right">个人%</th>
                            <th className="py-1.5 text-right">企业缴纳</th>
                            <th className="py-1.5 text-right">个人缴纳</th>
                          </tr>
                        </thead>
                        <tbody>
                          {r.items.map((item: any) => (
                            <tr key={item.name} className="border-b last:border-0">
                              <td className="py-1.5">{item.name}</td>
                              <td className="py-1.5 text-right text-gray-500">{item.orgRate}%</td>
                              <td className="py-1.5 text-right text-gray-500">{item.empRate}%</td>
                              <td className="py-1.5 text-right">¥{fmt(item.orgAmount)}</td>
                              <td className="py-1.5 text-right">¥{fmt(item.empAmount)}</td>
                            </tr>
                          ))}
                        </tbody>
                        <tfoot>
                          <tr className="border-t-2 font-bold">
                            <td className="py-2" colSpan={3}>合计</td>
                            <td className="py-2 text-right text-danger">¥{fmt(r.totalOrg)}</td>
                            <td className="py-2 text-right text-warning">¥{fmt(r.totalEmp)}</td>
                          </tr>
                        </tfoot>
                      </table>
                    </div>
                    <div className="border-t pt-3">
                      <div className="flex items-center justify-between">
                        <span className="font-medium">总费用</span>
                        <span className="text-lg font-bold text-primary">¥{fmt(r.total)}</span>
                      </div>
                      <div className="text-xs text-gray-400 mt-1">
                        企业承担 ¥{fmt(r.totalOrg)} + 个人承担 ¥{fmt(r.totalEmp)}
                      </div>
                    </div>
                  </div>
                )
              })()}
          </Card>
        </div>
      )}

      {/* ========== 月度办理 Tab ========== */}
      {tab === 'monthly' && (
        <Card>
          <div className="flex items-center justify-between mb-3">
            <h2 className="text-xs font-medium">月度办理</h2>
            <div className="flex items-center gap-2">
              <Input type="month" value={monthlyMonth} onChange={(e) => setMonthlyMonth(e.target.value)} className="!w-32" />
              <Button variant="secondary" size="sm" onClick={() => monthlyChanges && handleExportCSV('social', monthlyChanges.social)}>
                <Download className="w-3.5 h-3.5 mr-1" />导出社保
              </Button>
              <Button variant="secondary" size="sm" onClick={() => monthlyChanges && handleExportCSV('housing', monthlyChanges.housing)}>
                <Download className="w-3.5 h-3.5 mr-1" />导出公积金
              </Button>
            </div>
          </div>
          <div className="bg-blue-50 text-blue-700 text-xs px-3 py-2 rounded-md mb-3">
            展示当月社保/公积金新增（入职/重新入职）、减少（离职/解聘）及正常在保人员列表，用于经办机构申报。
          </div>
          {(() => {
            if (!monthlyChanges) return <div className="text-center py-4 text-gray-400 text-xs">加载中...</div>
            const sAdd = monthlyChanges.social?.additions || []
            const sSub = monthlyChanges.social?.subtractions || []
            const sNormal = monthlyChanges.socialActive?.items || []
            const hAdd = monthlyChanges.housing?.additions || []
            const hSub = monthlyChanges.housing?.subtractions || []
            const hNormal = monthlyChanges.housingActive?.items || []
            if (sAdd.length === 0 && sSub.length === 0 && hAdd.length === 0 && hSub.length === 0 && sNormal.length === 0 && hNormal.length === 0) {
              return <div className="text-center py-4 text-gray-400 text-xs">{monthlyMonth} 无办理记录</div>
            }
            return (
              <div className="space-y-4">
                {/* 社保 */}
                <div>
                  <h3 className="text-xs font-medium mb-2">社保</h3>
                  <div className="overflow-x-auto">
                    <table className="w-full text-xs">
                      <thead>
                        <tr className="border-b text-gray-500">
                          <th className="py-2 text-left">姓名</th>
                          <th className="py-2 text-left">部门</th>
                          <th className="py-2 text-left">类型</th>
                          <th className="py-2 text-right">基数</th>
                          <th className="py-2 text-left">开始年月</th>
                          <th className="py-2 text-left">截止年月</th>
                        </tr>
                      </thead>
                      <tbody>
                        {sAdd.map((i: any) => (
                          <tr key={`sa-${i.employeeId}`} className="border-b last:border-0">
                            <td className="py-1.5">{i.name}</td>
                            <td className="py-1.5 text-gray-500">{i.department}</td>
                            <td className="py-1.5"><span className="px-2 py-0.5 rounded bg-green-50 text-safe">新增</span></td>
                            <td className="py-1.5 text-right">¥{fmt(i.base)}</td>
                            <td className="py-1.5">{i.startMonth}</td>
                            <td className="py-1.5 text-gray-400">—</td>
                          </tr>
                        ))}
                        {sSub.map((i: any) => (
                          <tr key={`ss-${i.employeeId}`} className="border-b last:border-0">
                            <td className="py-1.5">{i.name}</td>
                            <td className="py-1.5 text-gray-500">{i.department}</td>
                            <td className="py-1.5"><span className="px-2 py-0.5 rounded bg-red-50 text-danger">减少</span></td>
                            <td className="py-1.5 text-right">¥{fmt(i.base)}</td>
                            <td className="py-1.5 text-gray-400">—</td>
                            <td className="py-1.5">{i.endMonth}</td>
                          </tr>
                        ))}
                        {sNormal.map((i: any) => (
                          <tr key={`sn-${i.employeeId}`} className="border-b last:border-0">
                            <td className="py-1.5">{i.name}</td>
                            <td className="py-1.5 text-gray-500">{i.department}</td>
                            <td className="py-1.5"><span className="px-2 py-0.5 rounded bg-gray-100 text-gray-500">正常</span></td>
                            <td className="py-1.5 text-right">¥{fmt(i.base)}</td>
                            <td className="py-1.5 text-gray-400">{i.startMonth}</td>
                            <td className="py-1.5 text-gray-400">{i.endMonth || '在保'}</td>
                          </tr>
                        ))}
                      </tbody>
                    </table>
                  </div>
                </div>
                {/* 公积金 */}
                <div>
                  <h3 className="text-xs font-medium mb-2">公积金</h3>
                  <div className="overflow-x-auto">
                    <table className="w-full text-xs">
                      <thead>
                        <tr className="border-b text-gray-500">
                          <th className="py-2 text-left">姓名</th>
                          <th className="py-2 text-left">部门</th>
                          <th className="py-2 text-left">类型</th>
                          <th className="py-2 text-right">基数</th>
                          <th className="py-2 text-left">开始年月</th>
                          <th className="py-2 text-left">截止年月</th>
                        </tr>
                      </thead>
                      <tbody>
                        {hAdd.map((i: any) => (
                          <tr key={`ha-${i.employeeId}`} className="border-b last:border-0">
                            <td className="py-1.5">{i.name}</td>
                            <td className="py-1.5 text-gray-500">{i.department}</td>
                            <td className="py-1.5"><span className="px-2 py-0.5 rounded bg-green-50 text-safe">新增</span></td>
                            <td className="py-1.5 text-right">¥{fmt(i.base)}</td>
                            <td className="py-1.5">{i.startMonth}</td>
                            <td className="py-1.5 text-gray-400">—</td>
                          </tr>
                        ))}
                        {hSub.map((i: any) => (
                          <tr key={`hs-${i.employeeId}`} className="border-b last:border-0">
                            <td className="py-1.5">{i.name}</td>
                            <td className="py-1.5 text-gray-500">{i.department}</td>
                            <td className="py-1.5"><span className="px-2 py-0.5 rounded bg-red-50 text-danger">减少</span></td>
                            <td className="py-1.5 text-right">¥{fmt(i.base)}</td>
                            <td className="py-1.5 text-gray-400">—</td>
                            <td className="py-1.5">{i.endMonth}</td>
                          </tr>
                        ))}
                        {hNormal.map((i: any) => (
                          <tr key={`hn-${i.employeeId}`} className="border-b last:border-0">
                            <td className="py-1.5">{i.name}</td>
                            <td className="py-1.5 text-gray-500">{i.department}</td>
                            <td className="py-1.5"><span className="px-2 py-0.5 rounded bg-gray-100 text-gray-500">正常</span></td>
                            <td className="py-1.5 text-right">¥{fmt(i.base)}</td>
                            <td className="py-1.5 text-gray-400">{i.startMonth}</td>
                            <td className="py-1.5 text-gray-400">{i.endMonth || '在保'}</td>
                          </tr>
                        ))}
                      </tbody>
                    </table>
                  </div>
                </div>
              </div>
            )
          })()}
        </Card>
      )}

      <p className="text-xs text-gray-400">
        社保/公积金基数按上年度月均工资核定，每人不同，在员工基本信息中设置。比例和基数上下限按版本管理，通常每年7月调整。
        发薪批次计算时按批次月份自动匹配对应版本配置。
      </p>
    </div>
  )
}