import { useState } from "react"
import { useMutation, useQueryClient } from "@tanstack/react-query"
import { rosterApi } from '../../lib/api-services'
import Card from "../../components/ui/Card"
import Button from "../../components/ui/Button"
import { Input, Label, Select } from "../../components/ui/Input"
import { AlertTriangle, Check, Download } from "lucide-react"
import { toast } from "sonner"
import { useAuthStore } from '../../store/authStore'

// ========== 违纪记录管理 ==========

export default function DisciplinaryInfo({ employeeId, records }: { employeeId: string; records: any[] }) {
  const queryClient = useQueryClient()
  const [showForm, setShowForm] = useState(false)
  const [form, setForm] = useState({ violationDate: '', violationType: 'LATE', description: '', severity: 'WARNING', action: 'ORAL_WARNING', actionDetail: '', deductionAmount: 0, employeeAck: false, ackDate: '', ackMethod: 'SIGN', witness: '' })

  const createMutation = useMutation({
    mutationFn: (data: any) => rosterApi.createDisciplinary(employeeId, data),
    onSuccess: () => { queryClient.invalidateQueries({ queryKey: ['roster-profile'] }); setShowForm(false) },
  })

  const deleteMutation = useMutation({
    mutationFn: (id: string) => rosterApi.removeDisciplinary(employeeId, id),
    onSuccess: () => queryClient.invalidateQueries({ queryKey: ['roster-profile'] }),
  })

  const typeMap: Record<string, string> = { LATE: '迟到', ABSENT: '旷工', INSUBORDINATION: '不服从管理', MISCONDUCT: '违纪', VIOLATE_POLICY: '违反规章制度', OTHER: '其他' }
  const actionMap: Record<string, string> = { ORAL_WARNING: '口头警告', WRITTEN_WARNING: '书面警告', DEDUCTION: '扣款', DEMOTION: '降职', TERMINATION: '解除劳动合同' }
  const severityMap: Record<string, string> = { WARNING: '警告', SERIOUS: '严重', SEVERE: '重度' }

  return (
    <div className="space-y-3">
      <div className="flex justify-between items-center">
        <h2 className="text-xs font-medium">违纪记录（{records?.length || 0}条）</h2>
        <Button size="sm" onClick={() => setShowForm(!showForm)}>新增违纪记录</Button>
      </div>

      {showForm && (
        <Card>
          <div className="grid md:grid-cols-2 gap-4">
            <div><Label>违纪日期</Label><Input type="date" value={form.violationDate} onChange={(e) => setForm({ ...form, violationDate: e.target.value })} /></div>
            <div><Label>违纪类型</Label>
              <Select value={form.violationType} onChange={(e) => setForm({ ...form, violationType: e.target.value })}>
                {Object.entries(typeMap).map(([k, v]) => <option key={k} value={k}>{v}</option>)}
              </Select>
            </div>
            <div className="md:col-span-2"><Label>违纪事实描述</Label><Input value={form.description} onChange={(e) => setForm({ ...form, description: e.target.value })} placeholder="详细描述违纪事实" /></div>
            <div><Label>严重程度</Label>
              <Select value={form.severity} onChange={(e) => setForm({ ...form, severity: e.target.value })}>
                {Object.entries(severityMap).map(([k, v]) => <option key={k} value={k}>{v}</option>)}
              </Select>
            </div>
            <div><Label>处理结果</Label>
              <Select value={form.action} onChange={(e) => setForm({ ...form, action: e.target.value })}>
                {Object.entries(actionMap).map(([k, v]) => <option key={k} value={k}>{v}</option>)}
              </Select>
            </div>
            <div><Label>处理详情</Label><Input value={form.actionDetail} onChange={(e) => setForm({ ...form, actionDetail: e.target.value })} placeholder="降职说明等" /></div>
            {form.action === 'DEDUCTION' && (
              <div><Label>扣款金额（元）</Label><Input type="number" value={form.deductionAmount} onChange={(e) => setForm({ ...form, deductionAmount: Number(e.target.value) || 0 })} placeholder="扣款金额，用于薪资批次导入" /></div>
            )}
            <div><Label>见证人</Label><Input value={form.witness} onChange={(e) => setForm({ ...form, witness: e.target.value })} /></div>
            <div className="flex items-center gap-2 pt-6">
              <input type="checkbox" id="empAck" checked={form.employeeAck} onChange={(e) => setForm({ ...form, employeeAck: e.target.checked })} />
              <label htmlFor="empAck" className="text-xs">员工已签字确认</label>
            </div>
            {form.employeeAck && <div><Label>确认日期</Label><Input type="date" value={form.ackDate} onChange={(e) => setForm({ ...form, ackDate: e.target.value })} /></div>}
            <div className="md:col-span-2 flex gap-2">
              <Button onClick={() => createMutation.mutate(form)} disabled={createMutation.isPending || !form.violationDate || !form.description}>
                {createMutation.isPending ? '保存中...' : '保存'}
              </Button>
              <Button variant="secondary" onClick={() => setShowForm(false)}>取消</Button>
            </div>
          </div>
        </Card>
      )}

      {records?.length === 0 ? (
        <Card><div className="text-center py-8 text-gray-400">暂无违纪记录</div></Card>
      ) : records?.map((r) => (
        <Card key={r.id} className="p-4">
          <div className="flex justify-between items-start gap-3">
            <div className="flex-1 space-y-2">
              <div className="flex items-center gap-2 flex-wrap">
                <span className="text-xs font-medium text-gray-700">{r.violationDate?.toString().slice(0, 10)}</span>
                <span className={`px-2 py-0.5 rounded text-xs ${r.severity === 'SEVERE' ? 'bg-red-100 text-red-700' : r.severity === 'SERIOUS' ? 'bg-orange-50 text-orange-600' : 'bg-amber-50 text-amber-600'}`}>
                  {severityMap[r.severity] || r.severity}
                </span>
                <span className="px-2 py-0.5 rounded bg-gray-100 text-gray-600 text-xs">{typeMap[r.violationType] || r.violationType}</span>
              </div>
              <div className="text-xs text-gray-600 leading-relaxed">{r.description}</div>
              <div className="flex items-center gap-2 text-xs">
                <span className="text-gray-400">处理方式</span>
                <span className="px-2 py-0.5 rounded bg-blue-50 text-blue-600">{actionMap[r.action] || r.action}</span>
                {r.deductionAmount > 0 && <span className="text-danger font-medium">扣款 ¥{r.deductionAmount.toFixed(2)}</span>}
                {r.actionDetail && <span className="text-gray-500">{r.actionDetail}</span>}
              </div>
              <div className="flex items-center gap-4 text-xs pt-1 border-t">
                {r.employeeAck ? (
                  <span className="text-safe flex items-center gap-1">
                    <Check className="w-3 h-3" />已签字（{r.ackDate?.toString().slice(0, 10)}）
                  </span>
                ) : (
                  <span className="text-warning flex items-center gap-1">
                    <AlertTriangle className="w-3 h-3" />未签字
                  </span>
                )}
                {r.witness && <span className="text-gray-400">见证人：{r.witness}</span>}
                {r.ackMethod && <span className="text-gray-400">确认方式：{r.ackMethod === 'SIGN' ? '签字' : r.ackMethod === 'ELECTRONIC' ? '电子' : '拒绝'}</span>}
              </div>
            </div>
            <div className="flex items-center gap-2">
              {r.employeeAck && (
                <button
                  onClick={async () => {
                    try {
                      const token = useAuthStore.getState().accessToken
                      const res = await fetch(`/api/v1/roster/${employeeId}/disciplinary/${r.id}/certificate`, {
                        headers: token ? { Authorization: `Bearer ${token}` } : {},
                      })
                      if (!res.ok) throw new Error('导出失败')
                      const blob = await res.blob()
                      const url = URL.createObjectURL(blob)
                      const a = document.createElement('a')
                      a.href = url
                      a.download = `违纪确认证明_${r.violationDate?.toString().slice(0, 10)}.doc`
                      a.click()
                      URL.revokeObjectURL(url)
                    } catch {
                      toast.error('下载失败')
                    }
                  }}
                  className="text-xs text-primary hover:underline flex items-center gap-1 shrink-0"
                >
                  <Download className="w-3 h-3" />下载确认证明
                </button>
              )}
              <button onClick={() => deleteMutation.mutate(r.id)} className="text-xs text-gray-300 hover:text-danger shrink-0">删除</button>
            </div>
          </div>
        </Card>
      ))}
    </div>
  )
}
