// 终端审计 — 历史会话子面板（筛选 / 分页 / 回放 / 导出，只读无删除） // Logan.Li

import { useState, useMemo } from 'react';
import { useQuery } from '@tanstack/react-query';
import { cn } from '@/lib/utils';
import { useTranslation } from 'react-i18next';
import { Card, CardContent } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import {
  Table, TableBody, TableCell, TableHead, TableHeader, TableRow,
} from '@/components/ui/table';
import { Search, RefreshCw, Play, Download, Monitor, FileText, ChevronLeft, ChevronRight } from 'lucide-react';
import { terminalSessionApi, sessionCommandApi } from '@/api';
import { rdpSessionApi } from '@/api';
import { ReplayDialog } from '@/components/system/ReplayDialog';
import { RdpAuditViewer } from '@/components/system/RdpAuditViewer';
import { useTerminalSessions } from '@/hooks/api';
import { unwrapList, unwrapTotal } from '@/hooks/api/unwrap';
import { toast } from 'sonner';
import { formatDuration, formatSize, getStatusBadge, presetAuditRange } from './helpers';
import { buildCommandBookmarks } from '@/components/system/replay/replay-utils';
import { exportAuditReportCsv } from '@/components/system/replay/export-audit';
import type { ReplaySessionMeta } from '@/components/system/replay/replay-utils';
import type { TerminalSession } from './types';

const PAGE_SIZE = 20;

export function HistorySessionsPanel() {
  const { t } = useTranslation();

  const [page, setPage] = useState(1);
  const [rdpPage, setRdpPage] = useState(1);
  const [keyword, setKeyword] = useState('');
  const [username, setUsername] = useState('');
  const [startDate, setStartDate] = useState('');
  const [endDate, setEndDate] = useState('');
  const [hasRecordOnly, setHasRecordOnly] = useState(false);

  const [applied, setApplied] = useState({
    keyword: '', username: '', startDate: '', endDate: '', hasRecordOnly: false,
  });

  const queryParams = useMemo(() => ({
    page,
    page_size: PAGE_SIZE,
    status: 'closed',
    ...(applied.keyword ? { keyword: applied.keyword } : {}),
    ...(applied.username ? { username: applied.username } : {}),
    ...(applied.startDate ? { start_date: applied.startDate } : {}),
    ...(applied.endDate ? { end_date: applied.endDate } : {}),
    ...(applied.hasRecordOnly ? { has_record: '1' } : {}),
  }), [page, applied]);

  const rdpQueryParams = useMemo(() => ({
    ...queryParams,
    page: rdpPage,
  }), [queryParams, rdpPage]);

  const { data, isLoading, isFetching, refetch } = useTerminalSessions(queryParams);
  const rdpQuery = useQuery({
    queryKey: ['rdp-sessions', 'history', rdpQueryParams],
    queryFn: async () => {
      const resp = await rdpSessionApi.list(rdpQueryParams);
      return {
        list: unwrapList<TerminalSession>(resp),
        total: unwrapTotal(resp),
      };
    },
  });
  const sessions = data?.list ?? [];
  const total = data?.total ?? 0;
  const totalPages = Math.max(1, Math.ceil(total / PAGE_SIZE));
  const rdpSessions = rdpQuery.data?.list ?? [];
  const rdpTotal = rdpQuery.data?.total ?? 0;
  const rdpTotalPages = Math.max(1, Math.ceil(rdpTotal / PAGE_SIZE));

  const [replayId, setReplayId] = useState<number | null>(null);
  const [replayOpen, setReplayOpen] = useState(false);
  const [rdpReplayId, setRdpReplayId] = useState<number | null>(null);
  const [rdpReplayOpen, setRdpReplayOpen] = useState(false);

  const applyFilters = () => {
    setApplied({ keyword, username, startDate, endDate, hasRecordOnly });
    setPage(1);
    setRdpPage(1);
  };

  const openReplay = (id: number) => {
    setReplayId(id);
    setReplayOpen(true);
  };

  const openRdpReplay = (id: number) => {
    setRdpReplayId(id);
    setRdpReplayOpen(true);
  };

  const handleDownload = (id: number) => {
    terminalSessionApi.download(id).catch(() => toast.error(t('audit.terminal.exportFailed')));
  };

  // 导出审计报告：命令列表失败时仍导出会话元信息 // Logan.Li
  const handleExportReport = async (id: number) => {
    try {
      const sess = await terminalSessionApi.get(id);
      const meta = sess as ReplaySessionMeta;
      let cmdList: { id: number; command: string; timestamp?: string; created_at?: string }[] = [];
      try {
        const cmds = await sessionCommandApi.list({ session_id: id, page: 1, page_size: 500 });
        cmdList = unwrapList(cmds);
      } catch {
        /* 无命令表数据时仅导出会话信息 */
      }
      const duration = meta.duration || 0;
      const bookmarks = buildCommandBookmarks(cmdList, meta.start_time, duration);
      exportAuditReportCsv({ ...meta, id }, bookmarks);
      toast.success(t('audit.terminal.exportReport'));
    } catch {
      toast.error(t('audit.terminal.exportFailed'));
    }
  };

  return (
    <>
      <div className="flex flex-col gap-3">
        <div className="flex items-center gap-2 flex-wrap">
          <div className="relative w-52">
            <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 dg-text-muted" />
            <Input
              placeholder={t('audit.terminal.searchUserServerIp')}
              value={keyword}
              onChange={(e) => setKeyword(e.target.value)}
              onKeyDown={(e) => e.key === 'Enter' && applyFilters()}
              className="pl-9 h-9 dg-input"
            />
          </div>
          <Input
            placeholder={t('audit.terminal.filterUsername')}
            value={username}
            onChange={(e) => setUsername(e.target.value)}
            onKeyDown={(e) => e.key === 'Enter' && applyFilters()}
            className="w-32 h-9 dg-input"
          />
          <Input type="date" value={startDate} onChange={(e) => setStartDate(e.target.value)} className="w-36 h-9 dg-input" />
          <span className="dg-text-muted text-sm">—</span>
          <Input type="date" value={endDate} onChange={(e) => setEndDate(e.target.value)} className="w-36 h-9 dg-input" />
          <Button variant="outline" size="sm" className="dg-btn-secondary h-9" onClick={() => { const r = presetAuditRange(1); setStartDate(r.start); setEndDate(r.end); }}>
            {t('audit.terminal.presetToday')}
          </Button>
          <Button variant="outline" size="sm" className="dg-btn-secondary h-9" onClick={() => { const r = presetAuditRange(7); setStartDate(r.start); setEndDate(r.end); }}>
            {t('audit.terminal.preset7d')}
          </Button>
          <Button variant="outline" size="sm" className="dg-btn-secondary h-9" onClick={() => { const r = presetAuditRange(30); setStartDate(r.start); setEndDate(r.end); }}>
            {t('audit.terminal.preset30d')}
          </Button>
          <label className="flex items-center gap-1.5 text-xs dg-text-secondary cursor-pointer">
            <input type="checkbox" checked={hasRecordOnly} onChange={(e) => setHasRecordOnly(e.target.checked)} className="rounded" />
            {t('audit.terminal.hasRecordOnly')}
          </label>
          <Button size="sm" className="h-9" onClick={applyFilters}>{t('audit.terminal.applyFilter')}</Button>
          <Button variant="outline" size="sm" className="dg-btn-secondary h-9" onClick={() => { refetch(); rdpQuery.refetch(); }} disabled={isFetching || rdpQuery.isFetching}>
            <RefreshCw className={cn('h-4 w-4 mr-1', (isFetching || rdpQuery.isFetching) && 'animate-spin')} />{t('common.refresh')}
          </Button>
        </div>
      </div>

      <Card className="dg-card">
        <CardContent className="p-0">
          {isLoading ? (
            <div className="flex items-center justify-center py-16">
              <div className="w-8 h-8 border-2 border-blue-500 border-t-transparent rounded-full animate-spin" />
            </div>
          ) : sessions.length === 0 ? (
            <div className="flex flex-col items-center justify-center py-16 dg-text-muted">
              <Monitor className="h-8 w-8 mb-3 opacity-40" />
              <p className="text-sm">{t('audit.terminal.noHistory')}</p>
            </div>
          ) : (
            <>
              <Table>
                <TableHeader>
                  <TableRow className="border-[var(--dg-border)] hover:bg-transparent">
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.id')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.user')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.targetServer')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.startTime')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.duration')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.recordSize')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.status')}</TableHead>
                    <TableHead className="dg-text-secondary text-right">{t('audit.terminal.col.actions')}</TableHead>
                  </TableRow>
                </TableHeader>
                <TableBody>
                  {sessions.map((s) => (
                    <TableRow key={s.id} className="border-[var(--dg-border)] hover:bg-[var(--dg-bg-hover)]">
                      <TableCell><span className="text-sm dg-text-secondary">{s.id}</span></TableCell>
                      <TableCell><span className="text-sm text-[var(--dg-text-primary)]">{s.username || '--'}</span></TableCell>
                      <TableCell>
                        <div className="flex flex-col">
                          <span className="text-sm text-[var(--dg-text-primary)]">{s.server_name || '--'}</span>
                          <span className="text-xs dg-text-muted">{s.server_ip}</span>
                        </div>
                      </TableCell>
                      <TableCell>
                        <span className="text-sm dg-text-secondary">
                          {s.start_time ? new Date(s.start_time).toLocaleString() : '--'}
                        </span>
                      </TableCell>
                      <TableCell><span className="text-sm text-[var(--dg-text-secondary)]">{formatDuration(s.duration)}</span></TableCell>
                      <TableCell>
                        <span className="text-sm dg-text-secondary">{s.record_size > 0 ? formatSize(s.record_size) : '--'}</span>
                      </TableCell>
                      <TableCell>{getStatusBadge(s.status)}</TableCell>
                      <TableCell>
                        <div className="flex items-center justify-end gap-0.5">
                          <Button variant="ghost" size="icon" className="h-8 w-8 dg-text-secondary hover:dg-text-blue" onClick={() => openReplay(s.id)} disabled={!s.record_size} title={t('audit.terminal.replay')}>
                            <Play className="h-4 w-4" />
                          </Button>
                          <Button variant="ghost" size="icon" className="h-8 w-8 dg-text-secondary hover:dg-text-yellow" onClick={() => handleExportReport(s.id)} title={t('audit.terminal.exportReport')}>
                            <FileText className="h-4 w-4" />
                          </Button>
                          <Button variant="ghost" size="icon" className="h-8 w-8 dg-text-secondary hover:dg-text-green" onClick={() => handleDownload(s.id)} disabled={!s.record_size} title={t('audit.terminal.downloadRecord')}>
                            <Download className="h-4 w-4" />
                          </Button>
                        </div>
                      </TableCell>
                    </TableRow>
                  ))}
                </TableBody>
              </Table>
              <div className="flex items-center justify-between px-4 py-3 border-t border-[var(--dg-border)]">
                <span className="text-xs dg-text-muted">{t('audit.terminal.totalSessions', { count: total })}</span>
                <div className="flex items-center gap-2">
                  <Button variant="ghost" size="icon" className="h-8 w-8" disabled={page <= 1} onClick={() => setPage((p) => p - 1)}>
                    <ChevronLeft className="h-4 w-4" />
                  </Button>
                  <span className="text-xs dg-text-secondary">{page} / {totalPages}</span>
                  <Button variant="ghost" size="icon" className="h-8 w-8" disabled={page >= totalPages} onClick={() => setPage((p) => p + 1)}>
                    <ChevronRight className="h-4 w-4" />
                  </Button>
                </div>
              </div>
            </>
          )}
        </CardContent>
      </Card>

      <Card className="dg-card">
        <CardContent className="p-0">
          <div className="px-4 py-2 border-b border-[var(--dg-border)] text-xs font-semibold dg-text-secondary">RDP 历史会话</div>
          {rdpQuery.isLoading ? (
            <div className="flex items-center justify-center py-12">
              <div className="w-7 h-7 border-2 border-blue-500 border-t-transparent rounded-full animate-spin" />
            </div>
          ) : rdpSessions.length === 0 ? (
            <div className="flex flex-col items-center justify-center py-12 dg-text-muted">
              <Monitor className="h-7 w-7 mb-2 opacity-40" />
              <p className="text-sm">{t("common.noRdpHistory")}</p>
            </div>
          ) : (
            <>
              <Table>
                <TableHeader>
                  <TableRow className="border-[var(--dg-border)] hover:bg-transparent">
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.id')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.user')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.targetServer')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.startTime')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.duration')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.recordSize')}</TableHead>
                    <TableHead className="dg-text-secondary">{t('audit.terminal.col.status')}</TableHead>
                    <TableHead className="dg-text-secondary text-right">{t('audit.terminal.col.actions')}</TableHead>
                  </TableRow>
                </TableHeader>
                <TableBody>
                  {rdpSessions.map((s) => (
                    <TableRow key={`rdp-history-${s.id}`} className="border-[var(--dg-border)] hover:bg-[var(--dg-bg-hover)]">
                      <TableCell><span className="text-sm dg-text-secondary">{s.id}</span></TableCell>
                      <TableCell><span className="text-sm text-[var(--dg-text-primary)]">{s.username || '--'}</span></TableCell>
                      <TableCell>
                        <div className="flex flex-col">
                          <span className="text-sm text-[var(--dg-text-primary)]">{s.server_name || '--'}</span>
                          <span className="text-xs dg-text-muted">{s.server_ip}</span>
                        </div>
                      </TableCell>
                      <TableCell><span className="text-sm dg-text-secondary">{s.start_time ? new Date(s.start_time).toLocaleString() : '--'}</span></TableCell>
                      <TableCell><span className="text-sm text-[var(--dg-text-secondary)]">{formatDuration(s.duration)}</span></TableCell>
                      <TableCell><span className="text-sm dg-text-secondary">{s.record_size > 0 ? formatSize(s.record_size) : '--'}</span></TableCell>
                      <TableCell>{getStatusBadge(s.status)}</TableCell>
                      <TableCell>
                        <div className="flex items-center justify-end gap-0.5">
                          <Button variant="ghost" size="icon" className="h-8 w-8 dg-text-secondary hover:dg-text-blue" onClick={() => openRdpReplay(s.id)} disabled={!s.record_size} title={t('audit.rdpHistoryReplay')}>
                            <Play className="h-4 w-4" />
                          </Button>
                          <Button variant="ghost" size="icon" className="h-8 w-8 dg-text-secondary hover:dg-text-green" onClick={() => rdpSessionApi.download(s.id)} disabled={!s.record_size} title={t('audit.terminal.downloadRecord')}>
                            <Download className="h-4 w-4" />
                          </Button>
                        </div>
                      </TableCell>
                    </TableRow>
                  ))}
                </TableBody>
              </Table>
              <div className="flex items-center justify-between px-4 py-3 border-t border-[var(--dg-border)]">
                <span className="text-xs dg-text-muted">RDP 会话共 {rdpTotal} 条</span>
                <div className="flex items-center gap-2">
                  <Button variant="ghost" size="icon" className="h-8 w-8" disabled={rdpPage <= 1} onClick={() => setRdpPage((p) => p - 1)}>
                    <ChevronLeft className="h-4 w-4" />
                  </Button>
                  <span className="text-xs dg-text-secondary">{rdpPage} / {rdpTotalPages}</span>
                  <Button variant="ghost" size="icon" className="h-8 w-8" disabled={rdpPage >= rdpTotalPages} onClick={() => setRdpPage((p) => p + 1)}>
                    <ChevronRight className="h-4 w-4" />
                  </Button>
                </div>
              </div>
            </>
          )}
        </CardContent>
      </Card>

      <ReplayDialog open={replayOpen} onOpenChange={setReplayOpen} sessionId={replayId} />
      <RdpAuditViewer open={rdpReplayOpen} onOpenChange={setRdpReplayOpen} sessionId={rdpReplayId} mode="replay" />
    </>
  );
}