import { useEffect, useState } from 'react';
import { Clock3, Eye, Search } from 'lucide-react';
import { adminApi, type ReportRecord } from '@/api/adminApi';
import { Breadcrumb, Button, DateRangeInput, Input, Modal, Pagination, Select, Table, Tag, type DateRangeValue, type TableColumn } from '@/components/ui';

const statusTone: Record<string, 'neutral' | 'info' | 'success' | 'warning' | 'danger'> = {
  pending: 'neutral',
  waiting_material: 'warning',
  waiting_review: 'warning',
  reporting: 'warning',
  exporting: 'info',
  partial: 'warning',
  success: 'success',
  completed: 'success',
  failed: 'danger',
  rejected: 'danger',
};

const statusLabel: Record<string, string> = {
  pending: '待报备', waiting_material: '待补充资料', waiting_review: '待重新审核', reporting: '报备中', exporting: '导出中', partial: '部分通过', approved: '已通过', success: '成功', completed: '已完成', failed: '失败', rejected: '已驳回', abandoned: '已废弃', imported: '已导入', deleted: '已删除',
};

const actionLabel: Record<string, string> = {
  create: '创建报备任务', manual_status_change: '人工修改状态', export: '导出报备资料', receipt_import: '导入回执', audit_approved_create: '引流审核通过后创建', audit_approved_reset: '引流审核通过后重置', audit_resubmit_freeze: '引流修改后冻结', audit_rejected_freeze: '引流审核驳回后冻结', drainage_deleted: '引流信息删除',
};

const sourceEntryLabel: Record<string, string> = {
  enterprise_signature: '企业签名修改', report_task: '报备任务修改', channel_report: '通道信息修改', system: '系统自动处理', legacy: '历史记录（入口未记录）',
};

function translateStatus(value?: string | null) {
  if (!value) return '-';
  return statusLabel[value] ?? value;
}

function recordSource(record: ReportRecord) {
  if (record.sourceEntry) return sourceEntryLabel[record.sourceEntry] ?? record.sourceEntry;
  return record.action === 'manual_status_change' ? '历史记录（入口未记录）' : '系统自动处理';
}

function RecordDetailModal({ record, onClose }: { record: ReportRecord; onClose: () => void }) {
  const isDrainage = record.task?.reportType === 'drainage';
  const target = isDrainage ? record.task?.drainageInfo?.siteName ?? record.task?.drainageInfo?.url : record.task?.signature?.name;
  return (
    <Modal footer={<Button onClick={onClose}>关闭</Button>} onClose={onClose} open size="xl" title={<div className="template-modal-title"><h2>报备记录详情</h2><p>{record.id}</p></div>}>
      <div className="report-record-detail">
        <div className="detail-grid">
          <div><span>报备任务号</span><strong>{record.taskId}</strong></div>
          <div><span>通道</span><strong>{record.channel?.name ?? '-'}</strong></div>
          <div><span>报备类型</span><strong>{isDrainage ? '引流信息' : '签名'}</strong></div>
          <div><span>报备对象</span><strong>{target ?? '-'}</strong></div>
          <div><span>动作</span><strong>{actionLabel[record.action] ?? record.action}</strong></div>
          <div><span>修改入口</span><strong>{recordSource(record)}</strong></div>
          <div><span>状态前</span><strong>{translateStatus(record.statusBefore)}</strong></div>
          <div><span>状态后</span><strong>{translateStatus(record.statusAfter)}</strong></div>
          <div className="detail-grid__wide"><span>失败/备注原因</span><strong>{record.reason ?? '-'}</strong></div>
        </div>
        <section className="report-history">
          <h3><Clock3 size={17} />状态历史</h3>
          <div><span>{record.createdAt ?? '-'}</span><strong>{actionLabel[record.action] ?? record.action}</strong><em>{record.reason ?? `修改入口：${recordSource(record)}`}</em></div>
        </section>
      </div>
    </Modal>
  );
}

export function AdminReportRecordsPage() {
  const [records, setRecords] = useState<ReportRecord[]>([]);
  const [keyword, setKeyword] = useState('');
  const [dateRange, setDateRange] = useState<DateRangeValue>({});
  const [reportType, setReportType] = useState('all');
  const [detail, setDetail] = useState<ReportRecord | null>(null);
  const [error, setError] = useState('');
  const [page, setPage] = useState(1);
  const [total, setTotal] = useState(0);
  const pageSize = 10;

  function loadData(targetPage = page) {
    adminApi.listReportRecordsPage({
      keyword: keyword || undefined,
      reportType: reportType === 'all' ? undefined : reportType as 'signature' | 'drainage',
      createdAtFrom: dateRange.start || undefined,
      createdAtTo: dateRange.end || undefined,
      page: targetPage,
      pageSize,
    })
      .then((result) => {
        setRecords(result.items);
        setTotal(result.total);
        setError('');
      })
      .catch((failure: Error) => setError(failure.message || '报备记录加载失败'));
  }

  useEffect(() => {
    loadData(page);
  }, [page]);

  const columns: Array<TableColumn<ReportRecord>> = [
    { key: 'task', title: '报备任务号', width: '190px', render: (record) => <strong className="admin-task-id">{record.taskId}</strong> },
    { key: 'channel', title: '通道名称', width: '180px', render: (record) => record.channel?.name ?? '-' },
    { key: 'targetType', title: '变更主体', width: '110px', render: (record) => <Tag tone={record.task?.reportType === 'drainage' ? 'info' : 'neutral'}>{record.task?.reportType === 'drainage' ? '引流信息' : '签名'}</Tag> },
    { key: 'target', title: '主体内容', width: '260px', render: (record) => record.task?.reportType === 'drainage' ? <div className="admin-task-enterprise"><strong>{record.task?.signature?.name ?? '-'}</strong><span>{record.task?.drainageInfo?.siteName ?? '-'}</span><span>{record.task?.drainageInfo?.url ?? '-'}</span>{record.task?.drainageInfo?.remark ? <span>{record.task.drainageInfo.remark}</span> : null}</div> : <div className="admin-task-enterprise"><strong>{record.task?.signature?.name ?? '-'}</strong>{record.task?.signature?.purpose ? <span>{record.task.signature.purpose}</span> : null}</div> },
    { key: 'source', title: '修改入口', width: '150px', render: (record) => recordSource(record) },
    { key: 'action', title: '动作', width: '170px', render: (record) => actionLabel[record.action] ?? record.action },
    { key: 'status', title: '状态变化', width: '210px', render: (record) => <Tag tone={statusTone[record.statusAfter ?? 'pending'] ?? 'info'}>{`${translateStatus(record.statusBefore)} → ${translateStatus(record.statusAfter)}`}</Tag> },
    { key: 'time', title: '记录时间', width: '190px', render: (record) => record.createdAt ?? '-' },
    { key: 'reason', title: '备注', width: '320px', render: (record) => <span className="ui-table__long-text">{record.reason ?? '-'}</span> },
    { key: 'actions', title: '操作', align: 'right', width: '120px', render: (record) => <Button icon={<Eye size={14} />} onClick={() => setDetail(record)} size="sm" variant="ghost">详情</Button> },
  ];

  return (
    <section className="page-stack admin-sms-task-page report-record-page">
      <div className="page-heading">
        <div>
          <Breadcrumb items={['报备任务', '报备记录']} />
          <h1>报备记录</h1>
        </div>
      </div>
      {error ? <p className="form-error">{error}</p> : null}

      <div className="surface admin-task-filter">
        <Input label="报备任务号/通道/动作/备注" onChange={(event) => setKeyword(event.target.value)} placeholder="请输入报备任务号、通道、动作或备注" value={keyword} />
        <Select label="报备类型" onChange={(event) => setReportType(event.target.value)} options={[{ label: '全部类型', value: 'all' }, { label: '签名报备', value: 'signature' }, { label: '引流信息报备', value: 'drainage' }]} value={reportType} />
        <DateRangeInput label="提交时间" onChange={setDateRange} value={dateRange} />
        <div className="admin-task-filter__actions">
          <Button icon={<Search size={16} />} onClick={() => { if (page !== 1) setPage(1); else loadData(1); }}>查询</Button>
          <Button onClick={() => { setKeyword(''); setDateRange({}); setReportType('all'); }} variant="ghost">重置</Button>
        </div>
      </div>

      <div className="surface admin-task-table-card report-task-table-card">
        <Table columns={columns} data={records} emptyText="暂无报备记录" pagination={false} rowKey="id" />
      </div>
      <Pagination
        nextDisabled={page * pageSize >= total}
        onNext={() => setPage((current) => current + 1)}
        onPageChange={setPage}
        onPrevious={() => setPage((current) => Math.max(1, current - 1))}
        page={page}
        previousDisabled={page <= 1}
        total={total}
        totalPages={Math.max(1, Math.ceil(total / pageSize))}
      />

      {detail ? <RecordDetailModal onClose={() => setDetail(null)} record={detail} /> : null}
    </section>
  );
}