import { useEffect, useMemo, useState } from 'react'
import { Loader2 } from 'lucide-react'
import { useTranslation } from 'react-i18next'
import { Button } from '@/components/ui/button'
import { SearchableValueSelect } from '@/components/SearchableValueSelect'
import type { LogEntry } from '@/api/logs'
import { parseIngressAccessLog } from '@/lib/ingress-access-log'
import { applyLabelFilter } from '../query-utils'
import { HighlightedLogLine } from './HighlightedLogLine'
import { QueryEmptyState } from './QueryEmptyState'

function levelBadgeClass(level: string) {
  const value = (level || '').toLowerCase()
  if (value.includes('error') || value === 'err' || value === 'fatal' || value === 'critical') {
    return 'rounded bg-destructive/15 px-1 text-destructive'
  }
  if (value.includes('warn')) return 'rounded bg-warning/15 px-1 text-warning'
  if (value.includes('info')) return 'rounded bg-info/15 px-1 text-info'
  if (value.includes('debug') || value.includes('trace')) return 'rounded bg-muted px-1 text-muted-foreground'
  return 'rounded bg-muted px-1 text-muted-foreground'
}

// 只保留原始日志视图;表格/折线/流图/饼图等可视化已迁至「日志分析」页(LogDetailSection)

export function LogResultsPanel({ entries, searched, hasSource, pageIndex, hasNextPage, totalPages, loading, loadingStartedAt, query, terms, onQueryChange, onApplyDomain, onShowContext, onSearch, onNextPage, onPreviousPage }: {
  entries: LogEntry[]; searched: boolean; hasSource: boolean
  pageIndex: number; hasNextPage: boolean; totalPages?: number; loading: boolean; loadingStartedAt: number | null; query: string; terms: string[]
  onQueryChange: (query: string) => void; onApplyDomain: (domain: string) => void; onShowContext: (row: LogEntry) => void; onSearch: () => void; onNextPage: () => void; onPreviousPage: () => void
}) {
  const { t } = useTranslation('logs')
  const [domainFilter, setDomainFilter] = useState('')
  const [clock, setClock] = useState(0)
  useEffect(() => {
    if (!loading) return
    const timer = window.setInterval(() => setClock(Date.now()), 1000)
    return () => window.clearInterval(timer)
  }, [loading])
  const domains = useMemo(() => [...new Set(entries.map(entry => parseIngressAccessLog(entry.message)?.domain).filter((domain): domain is string => Boolean(domain)))].sort(), [entries])
  const visibleEntries = useMemo(() => {
    const needle = domainFilter.trim().toLowerCase()
    return needle ? entries.filter(entry => parseIngressAccessLog(entry.message)?.domain.includes(needle)) : entries
  }, [entries, domainFilter])
  return <section className="rounded-xl border bg-card p-4" aria-label={t('results.aria')}>
    <div className="mb-3 flex flex-wrap items-center justify-between gap-2">
      <h2 className="font-semibold">{t('results.title')} <span className="text-sm font-normal text-muted-foreground">{hasNextPage ? t('results.summaryMore', { page: pageIndex + 1, count: entries.length }) : t('results.summary', { page: pageIndex + 1, count: entries.length })}</span></h2>
    </div>
    {loading && <div role="status" aria-live="polite" className="mb-3 flex items-center gap-2 rounded-md border border-info/30 bg-info/5 px-3 py-2 text-sm text-foreground">
      <Loader2 className="size-4 shrink-0 animate-spin text-info" />
      <span>{entries.length ? t('results.loadingPage') : t('results.loadingQuery')} · {t('results.loadingWait', { seconds: clock && loadingStartedAt ? Math.max(0, Math.floor((clock - loadingStartedAt) / 1000)) : 0 })}</span>
    </div>}
    {pageIndex > 0 && <p className="mb-2 text-xs text-muted-foreground">{t('results.pagingHint')}</p>}
    {domains.length > 0 && <div className="mb-3 flex flex-wrap items-center gap-2 text-xs">
      <span className="shrink-0 text-muted-foreground">{t('results.domainFilter')}</span>
      <SearchableValueSelect
        hideLabel
        ariaLabel={t('results.domainFilter')}
        values={domains}
        value={domainFilter}
        onChange={setDomainFilter}
        allowEmpty
        emptyLabel={t('results.domainAll')}
        commitOnType
        placeholder={t('results.domainPlaceholder')}
        className="min-w-60"
        triggerClassName="h-8"
      />
      <Button type="button" size="sm" variant="outline" disabled={!domainFilter.trim() || loading} onClick={() => onApplyDomain(domainFilter.trim())}>{t('results.domainQuery')}</Button>
      <span className="text-muted-foreground">{t('results.domainHint', { shown: visibleEntries.length, total: entries.length })}</span>
    </div>}
    {entries.length === 0 ? <QueryEmptyState searched={searched} hasSource={hasSource} onRetry={onSearch} /> : visibleEntries.length === 0 ? <p className="py-10 text-center text-sm text-muted-foreground">{t('results.domainNoMatch')}</p> : <div className="divide-y">
      {visibleEntries.map((row, index) => <div key={`${row.timestampNs}-${index}`} className="py-2 text-sm">
        <div className="flex flex-wrap items-center gap-2 text-xs text-muted-foreground">
          <time className="font-mono tabular-nums">{new Date(row.timestamp).toLocaleString()}</time>
          <span className={levelBadgeClass(row.level)}>{row.level}</span>
          {Object.entries(row.labels).filter(([key]) => ['namespace', 'app', 'pod'].includes(key)).map(([key, value]) => <button key={key} title={t('results.filterLabel')} className="hover:text-primary" onClick={() => onQueryChange(applyLabelFilter(query, key, value))}>{key}={value}</button>)}
          <button className="text-primary hover:underline" onClick={() => onShowContext(row)}>{t('results.showContext')}</button>
        </div>
        <HighlightedLogLine message={row.message} terms={terms} className="mt-1 whitespace-pre-wrap break-all font-mono" />
      </div>)}
    </div>}
    {searched && entries.length > 0 && <div className="mt-3 flex items-center gap-2">
      <Button variant="outline" disabled={loading || pageIndex === 0} onClick={onPreviousPage}>{t('results.prevPage')}</Button>
      <span className="text-xs tabular-nums text-muted-foreground">
        {totalPages && totalPages > 1
          ? t('results.pageOfTotal', { page: pageIndex + 1, total: totalPages })
          : t('results.pageOf', { page: pageIndex + 1 })}
      </span>
      <Button variant="outline" disabled={loading || !hasNextPage} onClick={onNextPage}>{t('results.nextPage')}</Button>
    </div>}
  </section>
}