import NoteList, { type TNoteListRef } from '@/components/NoteList'
import NoteCard from '@/components/NoteCard'
import KindFilter from '@/components/KindFilter'
import { RefreshButton } from '@/components/RefreshButton'
import { Skeleton } from '@/components/ui/skeleton'
import { ExtendedKind, PROFILE_FEED_KINDS, PROFILE_TIMELINE_REQ_LIMIT } from '@/constants'
import { useProfileAuthorFeedSubRequests } from '@/hooks/useProfileAuthorFeedSubRequests'
import { useProfilePins } from '@/hooks/useProfilePins'
import { useKindFilterOrDefaults } from '@/providers/KindFilterProvider'
import { useDeletedEvent } from '@/providers/DeletedEventProvider'
import client from '@/services/client.service'
import { nip19, kinds } from 'nostr-tools'
import { forwardRef, useCallback, useEffect, useImperativeHandle, useMemo, useRef, useState } from 'react'
import { useTranslation } from 'react-i18next'

const profileFeedKinds = [...PROFILE_FEED_KINDS]

const ProfileFeed = forwardRef<{ refresh: () => void }, { pubkey: string }>(({ pubkey }, ref) => {
  const { t } = useTranslation()
  const { isEventDeleted } = useDeletedEvent()
  const { showKinds, showKind1OPs, showKind1Replies, showKind1111, feedKindFilterBypass } =
    useKindFilterOrDefaults()
  const profileTimelineShowKinds = useMemo(() => {
    if (showKinds.includes(kinds.Repost) && showKinds.includes(ExtendedKind.GENERIC_REPOST)) {
      return showKinds
    }
    const next = [...showKinds]
    if (!next.includes(kinds.Repost)) next.push(kinds.Repost)
    if (!next.includes(ExtendedKind.GENERIC_REPOST)) next.push(ExtendedKind.GENERIC_REPOST)
    return next.sort((a, b) => a - b)
  }, [showKinds])
  const [isRefreshing, setIsRefreshing] = useState(false)
  const noteListRef = useRef<TNoteListRef>(null)

  const { pinEvents, loadingPins, refreshPins } = useProfilePins(pubkey)

  const { subRequests, followingFeedDeltaSubRequests, feedSubscriptionKey, refresh: refreshAuthorRelayLayers } =
    useProfileAuthorFeedSubRequests({
      pubkey,
      kinds: profileFeedKinds,
      limit: PROFILE_TIMELINE_REQ_LIMIT
    })

  const pinnedEventIds = useMemo(
    () =>
      pinEvents.map((e) =>
        nip19.neventEncode({ id: e.id, author: e.pubkey, kind: e.kind })
      ),
    [pinEvents]
  )

  const refreshAll = useCallback(() => {
    setIsRefreshing(true)
    refreshPins()
    refreshAuthorRelayLayers()
    noteListRef.current?.refresh()
    void client.fetchDeletionEventsForPubkey(pubkey)
  }, [refreshPins, refreshAuthorRelayLayers, pubkey])

  useImperativeHandle(ref, () => ({ refresh: refreshAll }), [refreshAll])

  useEffect(() => {
    if (!isRefreshing) return
    const id = window.setTimeout(() => setIsRefreshing(false), 600)
    return () => clearTimeout(id)
  }, [isRefreshing])

  const handleShowKindsChange = useCallback(() => {
    noteListRef.current?.scrollToTop()
  }, [])

  const showPinsOnlySkeleton = pinEvents.length === 0 && loadingPins && subRequests.length === 0

  if (showPinsOnlySkeleton) {
    return (
      <div className="mt-4 space-y-2 px-1">
        <div className="space-y-2">
          {Array.from({ length: 4 }).map((_, i) => (
            <Skeleton key={i} className="h-32 w-full" />
          ))}
        </div>
      </div>
    )
  }

  if (!subRequests.length) {
    return (
      <div className="mt-4 px-2">
        <p className="py-8 text-center text-sm text-muted-foreground">{t('Nothing to load for this feed.')}</p>
      </div>
    )
  }

  return (
    <div className="mt-4 min-w-0">
      {isRefreshing && (
        <div
          className="mb-2 flex items-center justify-center gap-2 px-4 py-2 text-center text-sm text-green-500"
          role="status"
          aria-live="polite"
        >
          {t('Refreshing posts...')}
        </div>
      )}
      <div className="mb-2 flex flex-wrap items-center justify-end gap-2 px-2">
        <RefreshButton onClick={refreshAll} />
        <KindFilter showKinds={showKinds} onShowKindsChange={handleShowKindsChange} />
      </div>
      {pinEvents.filter((e) => !isEventDeleted(e)).length > 0 && (
        <div className="mb-3 space-y-2 px-1" aria-label={t('Pinned posts')}>
          {pinEvents
            .filter((e) => !isEventDeleted(e))
            .map((event) => (
              <NoteCard key={event.id} className="w-full" event={event} filterMutedNotes={false} pinned />
            ))}
          <div className="border-t border-border/60 px-2 py-1 text-xs text-muted-foreground">{t('Feed')}</div>
        </div>
      )}
      <div className="min-h-[min(40vh,320px)] min-w-0">
        <NoteList
          ref={noteListRef}
          subRequests={subRequests}
          followingFeedDeltaSubRequests={followingFeedDeltaSubRequests}
          feedSubscriptionKey={feedSubscriptionKey}
          hostPrimaryPageName="profile"
          showKinds={profileTimelineShowKinds}
          seeAllFeedEvents={feedKindFilterBypass}
          withKindFilter
          useFilterAsIs
          clientSideKindFilter
          preserveTimelineOnSubRequestsChange
          mergeTimelineWhenSubRequestFiltersMatch
          pinnedEventIds={pinnedEventIds}
          hideReplies={false}
          hideUntrustedNotes={false}
          filterMutedNotes={false}
          showKind1OPs={showKind1OPs}
          showKind1Replies={showKind1Replies}
          showKind1111={showKind1111}
          showFeedClientFilter
          timelinePublicReadFallback
          revealBatchSize={48}
        />
      </div>
    </div>
  )
})

ProfileFeed.displayName = 'ProfileFeed'

export default ProfileFeed