import { Crosshair } from 'lucide-react'
import { useTranslation } from 'react-i18next'
import { Dialog, DialogContent, DialogDescription, DialogHeader, DialogTitle } from '@/components/ui/dialog'
import type { LogEntry } from '@/api/logs'
import { HighlightedLogLine } from './HighlightedLogLine'

export type LogContext = { row: LogEntry; before: LogEntry[]; after: LogEntry[] }

function ContextRow({ row, current, terms }: { row: LogEntry; current?: boolean; terms: string[] }) {
  const { t } = useTranslation('logs')
  const match = row.message.match(/^\d{4}-\d\d-\d\dT\S+\s+(stdout|stderr)\s+[FP]\s+([\s\S]*)$/)
  return <article className={`border-l-[3px] px-3 py-2 ${current ? 'border-l-warning bg-warning/15' : 'border-l-transparent bg-card'}`}>
    <div className="mb-1 flex flex-wrap items-center gap-2 text-xs">
      {current && <span className="inline-flex items-center gap-1 rounded bg-warning px-2 py-0.5 font-semibold text-warning-foreground"><Crosshair className="size-3" />{t('context.current')}</span>}
      <time className="font-mono tabular-nums text-muted-foreground">{new Date(row.timestamp).toLocaleString()}</time>
      {match && <span className="rounded bg-muted px-1.5 py-0.5 font-mono text-muted-foreground">{match[1]}</span>}
      {row.level && <span className="rounded bg-muted px-1.5 py-0.5 text-muted-foreground">{row.level}</span>}
    </div>
    <HighlightedLogLine message={match?.[2] ?? row.message} terms={terms} className="m-0 whitespace-pre-wrap break-all font-mono text-xs leading-5 text-foreground" />
  </article>
}

export function LogContextDialog({ context, terms, onClose }: { context: LogContext | null; terms: string[]; onClose: () => void }) {
  const { t } = useTranslation('logs')
  return <Dialog open={context !== null} onOpenChange={open => { if (!open) onClose() }}>
    <DialogContent className="flex max-h-[85vh] flex-col gap-0 !overflow-hidden p-0 sm:max-w-4xl">
      <DialogHeader className="border-b px-5 py-4 pr-12">
        <DialogTitle>{t('context.title')}</DialogTitle>
        <DialogDescription>{context?.row.labels.filename ? t('context.sameFile') : t('context.sameStream')} · {t('context.meta')}</DialogDescription>
        {context && <div className="flex flex-wrap gap-1.5 pt-1 text-xs">
          {['namespace', 'app', 'pod'].filter(key => context.row.labels[key]).map(key => <span key={key} className="rounded bg-muted px-2 py-1 font-mono text-foreground">{key}={context.row.labels[key]}</span>)}
          {context.row.labels.filename && <span title={context.row.labels.filename} className="max-w-full truncate rounded bg-muted px-2 py-1 font-mono text-foreground">{t('context.file', { name: context.row.labels.filename.split('/').slice(-2).join('/') })}</span>}
        </div>}
      </DialogHeader>
      {context && <div className="space-y-3 overflow-y-auto bg-muted/20 px-5 py-4">
        <section aria-label={t('context.beforeAria')}>
          <h3 className="mb-1.5 text-xs font-semibold text-muted-foreground">{t('context.beforeTitle', { count: context.before.length })}</h3>
          {context.before.length ? <div className="divide-y overflow-hidden rounded-lg border">{context.before.map((row, index) => <ContextRow key={`${row.timestampNs}-${index}`} row={row} terms={terms} />)}</div> : <p className="rounded-lg border border-dashed p-3 text-xs text-muted-foreground">{t('context.beforeEmpty')}</p>}
        </section>
        <section aria-label={t('context.currentAria')} className="overflow-hidden rounded-lg border border-warning/70 shadow-sm"><ContextRow row={context.row} current terms={terms} /></section>
        <section aria-label={t('context.afterAria')}>
          <h3 className="mb-1.5 text-xs font-semibold text-muted-foreground">{t('context.afterTitle', { count: context.after.length })}</h3>
          {context.after.length ? <div className="divide-y overflow-hidden rounded-lg border">{context.after.map((row, index) => <ContextRow key={`${row.timestampNs}-${index}`} row={row} terms={terms} />)}</div> : <p className="rounded-lg border border-dashed p-3 text-xs text-muted-foreground">{t('context.afterEmpty')}</p>}
        </section>
      </div>}
    </DialogContent>
  </Dialog>
}