import { formatDate } from 'date-fns'
import {
  useAppSelector,
  useBodyScrollDisable,
  useDidMount,
  useNDKContext,
  useReplies
} from 'hooks'
import { nip19 } from 'nostr-tools'
import {
  ChangeEvent,
  useCallback,
  useEffect,
  useMemo,
  useRef,
  useState
} from 'react'
import {
  Link,
  useLoaderData,
  useLocation,
  useNavigate,
  useNavigation,
  useParams,
  useSubmit
} from 'react-router-dom'
import {
  appRoutes,
  getBlogPageRoute,
  getModPageRoute,
  getProfilePageRoute
} from 'routes'
import { CommentEvent, UserProfile } from 'types'
import { CommentsLoaderResult } from 'types/comments'
import { adjustTextareaHeight, handleCommentSubmit, hexToNpub } from 'utils'
import { Reactions } from './Reactions'
import { Zap } from './Zap'
import { Comment } from './Comment'
import { useComments } from 'hooks/useComments'
import { CommentContent } from './CommentContent'
import { Dots } from 'components/Spinner'
import {
  NDKEvent,
  NDKFilter,
  NDKKind,
  NDKSubscriptionCacheUsage
} from '@nostr-dev-kit/ndk'
import { NoteQuoteRepostPopup } from 'components/Notes/NoteQuoteRepostPopup'
import { NoteRepostPopup } from 'components/Notes/NoteRepostPopup'
import _ from 'lodash'

interface CommentsPopupProps {
  title: string
}

export const CommentsPopup = ({ title }: CommentsPopupProps) => {
  const { naddr } = useParams()
  const location = useLocation()
  const { ndk } = useNDKContext()
  useBodyScrollDisable(true)
  const isMod = location.pathname.includes('/mod/')
  const isBlog = location.pathname.includes('/blog/')
  const isNote = location.pathname.includes('/feed')
  const baseUrl = naddr
    ? isMod
      ? getModPageRoute(naddr)
      : isBlog
      ? getBlogPageRoute(naddr)
      : undefined
    : isNote
    ? `${appRoutes.feed}/`
    : undefined
  const { event } = useLoaderData() as CommentsLoaderResult
  const eTags = event.getMatchingTags('e')
  const lastETag = _.last(eTags)
  const {
    size,
    parent: replyEvent,
    isComplete,
    root: rootEvent
  } = useReplies(lastETag?.[1])
  const isRoot =
    event.kind === NDKKind.Text
      ? !event.getMatchingTags('e').length
      : event.tagValue('a') === event.tagValue('A')
  const [profile, setProfile] = useState<UserProfile>()
  const { commentEvents, setCommentEvents } = useComments(
    event.author.pubkey,
    undefined,
    event.id
  )
  useEffect(() => {
    event.author.fetchProfile().then((res) => setProfile(res))
  }, [event.author])
  const profileRoute = useMemo(
    () =>
      getProfilePageRoute(
        nip19.nprofileEncode({
          pubkey: event.pubkey
        })
      ),
    [event.pubkey]
  )

  const navigate = useNavigate()
  const ref = useRef<HTMLTextAreaElement>(null)
  const [isSubmitting, setIsSubmitting] = useState(false)
  const [replyText, setReplyText] = useState('')

  const handleChange = useCallback((e: ChangeEvent<HTMLTextAreaElement>) => {
    const value = e.currentTarget.value
    setReplyText(value)
  }, [])

  useEffect(() => {
    if (ref.current) adjustTextareaHeight(ref.current)
  }, [replyText])

  const [visible, setVisible] = useState<CommentEvent[]>([])
  const discoveredCount = commentEvents.length - visible.length
  const [isLoading, setIsLoading] = useState(true)
  useEffect(() => {
    // Initial loading to indicate comments fetching (stop after 5 seconds)
    const t = window.setTimeout(() => setIsLoading(false), 5000)
    return () => {
      window.clearTimeout(t)
    }
  }, [])
  useEffect(() => {
    if (isLoading) {
      setVisible(commentEvents)
    }
  }, [commentEvents, isLoading])
  const handleDiscoveredClick = () => {
    setVisible(commentEvents)
  }
  const handleSubmit = handleCommentSubmit(
    event,
    setCommentEvents,
    setVisible,
    ndk
  )

  const handleComment = async () => {
    setIsSubmitting(true)
    const submitted = await handleSubmit(replyText)
    if (submitted) setReplyText('')
    setIsSubmitting(false)
  }

  const submit = useSubmit()
  const navigation = useNavigation()
  const [repostEvents, setRepostEvents] = useState<NDKEvent[]>([])
  const [quoteRepostEvents, setQuoteRepostEvents] = useState<NDKEvent[]>([])
  const [hasReposted, setHasReposted] = useState(false)
  const [hasQuoted, setHasQuoted] = useState(false)
  const [showRepostPopup, setShowRepostPopup] = useState(false)
  const [showQuoteRepostPopup, setShowQuoteRepostPopup] = useState(false)
  const userState = useAppSelector((state) => state.user)
  const userPubkey = userState.user?.pubkey as string | undefined
  useDidMount(() => {
    const repostFilter: NDKFilter = {
      kinds: [NDKKind.Repost],
      '#e': [event.id]
    }
    const quoteFilter: NDKFilter = {
      kinds: [NDKKind.Text],
      '#q': [event.id]
    }
    ndk
      .fetchEvents([repostFilter, quoteFilter], {
        closeOnEose: true,
        cacheUsage: NDKSubscriptionCacheUsage.PARALLEL
      })
      .then((ndkEventSet) => {
        const ndkEvents = Array.from(ndkEventSet)

        if (ndkEventSet.size) {
          const quoteRepostEvents = ndkEvents.filter(
            (n) => n.kind === NDKKind.Text
          )
          userPubkey &&
            setHasQuoted(
              quoteRepostEvents.some((qr) => qr.pubkey === userPubkey)
            )
          setQuoteRepostEvents(quoteRepostEvents)

          const repostEvents = ndkEvents.filter(
            (n) => n.kind === NDKKind.Repost
          )
          userPubkey &&
            setHasReposted(repostEvents.some((qr) => qr.pubkey === userPubkey))
          setRepostEvents(repostEvents)
        }
      })
      .finally(() => {
        setIsLoading(false)
      })
  })

  const [showQuoteReposts, setShowQuoteReposts] = useState(false)

  const handleRepost = async (confirm: boolean) => {
    if (navigation.state !== 'idle') return

    setShowRepostPopup(false)

    // Cancel if not confirmed
    if (!confirm) return

    const repostNdkEvent = await event.repost(false)
    const rawEvent = repostNdkEvent.rawEvent()
    submit(
      JSON.stringify({
        intent: 'repost',
        data: rawEvent
      }),
      {
        method: 'post',
        encType: 'application/json',
        action: appRoutes.feed
      }
    )
  }

  return (
    <div className='popUpMain'>
      <div className='ContainerMain'>
        <div className='popUpMainCardWrapper'>
          <div className='popUpMainCard'>
            <div className='popUpMainCardTop'>
              <div className='popUpMainCardTopInfo'>
                <h3>{title}</h3>
              </div>

              <div
                className='popUpMainCardTopClose'
                onClick={() => navigate('..')}
              >
                <svg
                  xmlns='http://www.w3.org/2000/svg'
                  viewBox='-96 0 512 512'
                  width='1em'
                  height='1em'
                  fill='currentColor'
                  style={{ zIndex: 1 }}
                >
                  <path d='M310.6 361.4c12.5 12.5 12.5 32.75 0 45.25C304.4 412.9 296.2 416 288 416s-16.38-3.125-22.62-9.375L160 301.3L54.63 406.6C48.38 412.9 40.19 416 32 416S15.63 412.9 9.375 406.6c-12.5-12.5-12.5-32.75 0-45.25l105.4-105.4L9.375 150.6c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0L160 210.8l105.4-105.4c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25l-105.4 105.4L310.6 361.4z'></path>
                </svg>
              </div>
            </div>
            <div className='popUpMainCardBottom'>
              <div className='pUMCB_PrimeComment'>
                <div className='IBMSMSMBSSCL_Comment'>
                  <div className='IBMSMSMBSSCL_CommentTopOther'>
                    <div className='IBMSMSMBSSCL_CTO'>
                      {replyEvent && (
                        <Link
                          style={{
                            ...(!isComplete ? { pointerEvents: 'none' } : {})
                          }}
                          className='IBMSMSMBSSCL_CTOLink'
                          to={baseUrl + replyEvent.encode()}
                        >
                          <svg
                            xmlns='http://www.w3.org/2000/svg'
                            viewBox='-32 0 512 512'
                            width='1em'
                            height='1em'
                            fill='currentColor'
                            className='IBMSMSMBSSCL_CTOLinkIcon'
                          >
                            <path d='M447.1 256C447.1 273.7 433.7 288 416 288H109.3l105.4 105.4c12.5 12.5 12.5 32.75 0 45.25C208.4 444.9 200.2 448 192 448s-16.38-3.125-22.62-9.375l-160-160c-12.5-12.5-12.5-32.75 0-45.25l160-160c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25L109.3 224H416C433.7 224 447.1 238.3 447.1 256z'></path>
                          </svg>
                        </Link>
                      )}
                      <p className='IBMSMSMBSSCL_CTOText'>
                        Reply Depth:&nbsp;<span>{size}</span>
                        {!isComplete && <Dots />}
                      </p>
                    </div>
                    {!isRoot && rootEvent && (
                      <Link
                        style={{
                          ...(!isComplete ? { pointerEvents: 'none' } : {})
                        }}
                        className='btn btnMain IBMSMSMBSSCL_CTOBtn'
                        type='button'
                        to={baseUrl + rootEvent.encode()}
                      >
                        Main Post {!isComplete && <Dots />}
                      </Link>
                    )}
                  </div>
                  <div className='IBMSMSMBSSCL_CommentTop'>
                    <div className='IBMSMSMBSSCL_CommentTopPPWrapper'>
                      <Link
                        className='IBMSMSMBSSCL_CommentTopPP'
                        to={profileRoute}
                        style={{
                          background: `url('${
                            profile?.image || ''
                          }') center / cover no-repeat`
                        }}
                      />
                    </div>
                    <div className='IBMSMSMBSSCL_CommentTopDetailsWrapper'>
                      <div className='IBMSMSMBSSCL_CommentTopDetails'>
                        <Link
                          className='IBMSMSMBSSCL_CTD_Name'
                          to={profileRoute}
                        >
                          {profile?.displayName || profile?.name || ''}{' '}
                        </Link>
                        <Link
                          className='IBMSMSMBSSCL_CTD_Address'
                          to={profileRoute}
                        >
                          {hexToNpub(event.pubkey)}
                        </Link>
                      </div>
                      {event.created_at && (
                        <div className='IBMSMSMBSSCL_CommentActionsDetails'>
                          <a className='IBMSMSMBSSCL_CADTime'>
                            {formatDate(event.created_at * 1000, 'hh:mm aa')}{' '}
                          </a>
                          <a className='IBMSMSMBSSCL_CADDate'>
                            {formatDate(event.created_at * 1000, 'dd/MM/yyyy')}
                          </a>
                        </div>
                      )}
                    </div>
                  </div>
                  <div className='IBMSMSMBSSCL_CommentBottom'>
                    <CommentContent content={event.content} />
                  </div>
                  <div className='IBMSMSMBSSCL_CommentActions'>
                    <div className='IBMSMSMBSSCL_CommentActionsInside'>
                      <Reactions {...event.rawEvent()} />

                      {event.kind === NDKKind.Text && (
                        <>
                          {/* Quote Repost, Kind 1 */}
                          <div
                            className={`IBMSMSMBSSCL_CAElement IBMSMSMBSSCL_CAERepost ${
                              hasQuoted ? 'IBMSMSMBSSCL_CAERepostActive' : ''
                            }`}
                            onClick={
                              isLoading
                                ? undefined
                                : () => setShowQuoteRepostPopup(true)
                            }
                          >
                            <svg
                              xmlns='http://www.w3.org/2000/svg'
                              viewBox='0 0 512 512'
                              width='1em'
                              height='1em'
                              fill='currentColor'
                              className='IBMSMSMBSSCL_CAElementIcon'
                            >
                              <path d='M256 31.1c-141.4 0-255.1 93.09-255.1 208c0 49.59 21.38 94.1 56.97 130.7c-12.5 50.39-54.31 95.3-54.81 95.8C0 468.8-.5938 472.2 .6875 475.2c1.312 3 4.125 4.797 7.312 4.797c66.31 0 116-31.8 140.6-51.41c32.72 12.31 69.01 19.41 107.4 19.41C397.4 447.1 512 354.9 512 239.1S397.4 31.1 256 31.1zM368 266c0 8.836-7.164 16-16 16h-54V336c0 8.836-7.164 16-16 16h-52c-8.836 0-16-7.164-16-16V282H160c-8.836 0-16-7.164-16-16V214c0-8.838 7.164-16 16-16h53.1V144c0-8.838 7.164-16 16-16h52c8.836 0 16 7.162 16 16v54H352c8.836 0 16 7.162 16 16V266z'></path>
                            </svg>
                            <p className='IBMSMSMBSSCL_CAElementText'>
                              {isLoading ? <Dots /> : quoteRepostEvents.length}
                            </p>
                            <div className='IBMSMSMBSSCL_CAElementLoadWrapper'>
                              <div className='IBMSMSMBSSCL_CAElementLoad'></div>
                            </div>
                          </div>
                          {showQuoteRepostPopup && (
                            <NoteQuoteRepostPopup
                              ndkEvent={event}
                              handleClose={() => setShowQuoteRepostPopup(false)}
                            />
                          )}

                          {/* Repost, Kind 6 */}
                          <div
                            className={`IBMSMSMBSSCL_CAElement IBMSMSMBSSCL_CAERepost ${
                              hasReposted ? 'IBMSMSMBSSCL_CAERepostActive' : ''
                            }`}
                            onClick={
                              isLoading || hasReposted
                                ? undefined
                                : () => setShowRepostPopup(true)
                            }
                          >
                            <svg
                              xmlns='http://www.w3.org/2000/svg'
                              viewBox='0 -64 640 640'
                              width='1em'
                              height='1em'
                              fill='currentColor'
                              className='IBMSMSMBSSCL_CAElementIcon'
                            >
                              <path d='M614.2 334.8C610.5 325.8 601.7 319.1 592 319.1H544V176C544 131.9 508.1 96 464 96h-128c-17.67 0-32 14.31-32 32s14.33 32 32 32h128C472.8 160 480 167.2 480 176v143.1h-48c-9.703 0-18.45 5.844-22.17 14.82s-1.656 19.29 5.203 26.16l80 80.02C499.7 445.7 505.9 448 512 448s12.28-2.344 16.97-7.031l80-80.02C615.8 354.1 617.9 343.8 614.2 334.8zM304 352h-128C167.2 352 160 344.8 160 336V192h48c9.703 0 18.45-5.844 22.17-14.82s1.656-19.29-5.203-26.16l-80-80.02C140.3 66.34 134.1 64 128 64S115.7 66.34 111 71.03l-80 80.02C24.17 157.9 22.11 168.2 25.83 177.2S38.3 192 48 192H96V336C96 380.1 131.9 416 176 416h128c17.67 0 32-14.31 32-32S321.7 352 304 352z'></path>
                            </svg>
                            <p className='IBMSMSMBSSCL_CAElementText'>
                              {isLoading ? <Dots /> : repostEvents.length}
                            </p>
                            <div className='IBMSMSMBSSCL_CAElementLoadWrapper'>
                              <div className='IBMSMSMBSSCL_CAElementLoad'></div>
                            </div>
                          </div>
                          {showRepostPopup && (
                            <NoteRepostPopup
                              ndkEvent={event}
                              handleConfirm={handleRepost}
                              handleClose={() => setShowRepostPopup(false)}
                            />
                          )}
                        </>
                      )}

                      {typeof profile?.lud16 !== 'undefined' &&
                        profile.lud16 !== '' && <Zap {...event.rawEvent()} />}

                      <span className='IBMSMSMBSSCL_CAElement IBMSMSMBSSCL_CAEReplies'>
                        <svg
                          xmlns='http://www.w3.org/2000/svg'
                          viewBox='0 0 512 512'
                          width='1em'
                          height='1em'
                          fill='currentColor'
                          className='IBMSMSMBSSCL_CAElementIcon'
                        >
                          <path d='M256 32C114.6 32 .0272 125.1 .0272 240c0 49.63 21.35 94.98 56.97 130.7c-12.5 50.37-54.27 95.27-54.77 95.77c-2.25 2.25-2.875 5.734-1.5 8.734C1.979 478.2 4.75 480 8 480c66.25 0 115.1-31.76 140.6-51.39C181.2 440.9 217.6 448 256 448c141.4 0 255.1-93.13 255.1-208S397.4 32 256 32z'></path>
                        </svg>
                        <p className='IBMSMSMBSSCL_CAElementText'>
                          {commentEvents.length}
                        </p>
                        <p className='IBMSMSMBSSCL_CAElementText'>Replies</p>
                      </span>
                    </div>
                  </div>
                </div>
              </div>
              <div className='pUMCB_CommentToPrime'>
                <div className='IBMSMSMBSSCC_Top'>
                  <textarea
                    ref={ref}
                    className='IBMSMSMBSSCC_Top_Box postSocialTextarea'
                    placeholder='Got something to say?'
                    value={replyText}
                    onChange={handleChange}
                    style={{ height: '0px' }}
                  ></textarea>
                </div>
                <div className='IBMSMSMBSSCC_Bottom'>
                  {/* <a className='IBMSMSMBSSCC_BottomButton'>Quote-Repost</a> */}
                  <button
                    onClick={handleComment}
                    disabled={isSubmitting}
                    className='IBMSMSMBSSCC_BottomButton'
                  >
                    {isSubmitting ? 'Replying...' : 'Reply'}
                    <div className='IBMSMSMBSSCL_CAElementLoadWrapper'>
                      <div className='IBMSMSMBSSCL_CAElementLoad'></div>
                    </div>
                  </button>
                </div>
              </div>
              {commentEvents.length + quoteRepostEvents.length > 0 && (
                <>
                  <h3 className='IBMSMSMBSSCL_CommentNoteRepliesTitle'>
                    {isNote ? (
                      <div className='dropdown'>
                        <button
                          className='btn dropdown-toggle btnMain btnMainDropdown'
                          aria-expanded='false'
                          data-bs-toggle='dropdown'
                          type='button'
                        >
                          {showQuoteReposts ? 'Quote-Reposts' : 'Replies'}
                        </button>

                        <div className='dropdown-menu dropdownMainMenu'>
                          <div
                            className='dropdown-item dropdownMainMenuItem'
                            onClick={() => setShowQuoteReposts(false)}
                          >
                            Replies
                          </div>
                          <div
                            className='dropdown-item dropdownMainMenuItem'
                            onClick={() => setShowQuoteReposts(true)}
                          >
                            Quote-Reposts
                          </div>
                        </div>
                      </div>
                    ) : (
                      <>Replies</>
                    )}
                    <button
                      type='button'
                      className='btnMain IBMSMSMBSSCL_CommentNoteRepliesTitleBtn'
                      onClick={
                        discoveredCount ? handleDiscoveredClick : undefined
                      }
                    >
                      <span>
                        {isLoading ? (
                          <>
                            Discovering replies
                            <Dots />
                          </>
                        ) : discoveredCount ? (
                          <>Load {discoveredCount} discovered replies</>
                        ) : (
                          <>No new replies</>
                        )}
                      </span>
                    </button>
                  </h3>
                  {(showQuoteReposts
                    ? quoteRepostEvents.length
                    : commentEvents.length) === 0 && !isLoading ? (
                    <div className='IBMSMListFeedNoPosts'>
                      <p>
                        There are no{' '}
                        {showQuoteReposts ? 'quote-reposts' : 'replies'} to show
                      </p>
                    </div>
                  ) : (
                    <div className='pUMCB_RepliesToPrime'>
                      {showQuoteReposts
                        ? quoteRepostEvents.map((reply) => (
                            <Comment
                              key={reply.id}
                              comment={{ event: reply }}
                            />
                          ))
                        : commentEvents
                            // Filter out events with 'q' tag since we are showing them with a dropdown
                            .filter((r) => r.event.tagValue('q') !== event.id)
                            .map((reply) => (
                              <Comment key={reply.event.id} comment={reply} />
                            ))}
                    </div>
                  )}
                </>
              )}
            </div>
          </div>
        </div>
      </div>
    </div>
  )
}