/* eslint-disable react/destructuring-assignment */
import React, { MouseEventHandler, useCallback, useEffect, useMemo, useRef, useState } from 'react';
import { Direction, EventTimeline, MatrixEvent, Room } from 'matrix-js-sdk';
import { Avatar, Box, Chip, config, Icon, Icons, Scroll, Text } from 'folds';
import { Opts as LinkifyOpts } from 'linkifyjs';
import { HTMLReactParserOptions } from 'html-react-parser';
import { useVirtualizer } from '@tanstack/react-virtual';
import { SequenceCard } from '../../../components/sequence-card';
import { useMediaAuthentication } from '../../../hooks/useMediaAuthentication';
import {
  AvatarBase,
  ImageContent,
  MessageNotDecryptedContent,
  MessageUnsupportedContent,
  ModernLayout,
  MSticker,
  RedactedContent,
  Reply,
  Time,
  Username,
  UsernameBold,
} from '../../../components/message';
import { UserAvatar } from '../../../components/user-avatar';
import { getMxIdLocalPart, mxcUrlToHttp } from '../../../utils/matrix';
import { useMatrixClient } from '../../../hooks/useMatrixClient';
import {
  getEditedEvent,
  getEventThreadDetail,
  getMemberAvatarMxc,
  getMemberDisplayName,
} from '../../../utils/room';
import { GetContentCallback, MessageEvent } from '../../../../types/matrix/room';
import { useMentionClickHandler } from '../../../hooks/useMentionClickHandler';
import { useSpoilerClickHandler } from '../../../hooks/useSpoilerClickHandler';
import {
  factoryRenderLinkifyWithMention,
  getReactCustomHtmlParser,
  LINKIFY_OPTS,
  makeMentionCustomProps,
  renderMatrixMention,
} from '../../../plugins/react-custom-html-parser';
import { RenderMatrixEvent, useMatrixEventRenderer } from '../../../hooks/useMatrixEventRenderer';
import { RenderMessageContent } from '../../../components/RenderMessageContent';
import { useSetting } from '../../../state/hooks/settings';
import { settingsAtom } from '../../../state/settings';
import * as customHtmlCss from '../../../styles/CustomHtml.css';
import { EncryptedContent } from '../message';
import { Image } from '../../../components/media';
import { ImageViewer } from '../../../components/image-viewer';
import { useRoomNavigate } from '../../../hooks/useRoomNavigate';
import { usePowerLevelsContext } from '../../../hooks/usePowerLevels';
import { usePowerLevelTags } from '../../../hooks/usePowerLevelTags';
import { useTheme } from '../../../hooks/useTheme';
import { PowerIcon } from '../../../components/power';
import colorMXID from '../../../../util/colorMXID';
import { useIsDirectRoom, useRoom } from '../../../hooks/useRoom';
import { useRoomCreators } from '../../../hooks/useRoomCreators';
import {
  GetMemberPowerTag,
  getPowerTagIconSrc,
  useAccessiblePowerTagColors,
  useGetMemberPowerTag,
} from '../../../hooks/useMemberPowerTag';
import { useRoomCreatorsTag } from '../../../hooks/useRoomCreatorsTag';
import { ThreadSelector, ThreadSelectorContainer } from '../message/thread-selector';
import {
  getTimelineAndBaseIndex,
  getTimelineEvent,
  getTimelineRelativeIndex,
  getTimelinesEventsCount,
} from '../utils';
import { ThreadsLoading } from './ThreadsLoading';
import { VirtualTile } from '../../../components/virtualizer';
import { useAlive } from '../../../hooks/useAlive';
import * as css from './ThreadsMenu.css';

type ThreadMessageProps = {
  room: Room;
  event: MatrixEvent;
  renderContent: RenderMatrixEvent<[string, MatrixEvent, string, GetContentCallback]>;
  onOpen: (roomId: string, eventId: string) => void;
  getMemberPowerTag: GetMemberPowerTag;
  accessibleTagColors: Map<string, string>;
  legacyUsernameColor: boolean;
  hour24Clock: boolean;
  dateFormatString: string;
};
function ThreadMessage({
  room,
  event,
  renderContent,
  onOpen,
  getMemberPowerTag,
  accessibleTagColors,
  legacyUsernameColor,
  hour24Clock,
  dateFormatString,
}: ThreadMessageProps) {
  const useAuthentication = useMediaAuthentication();
  const mx = useMatrixClient();

  const handleOpenClick: MouseEventHandler = (evt) => {
    evt.stopPropagation();
    const evtId = evt.currentTarget.getAttribute('data-event-id');
    if (!evtId) return;
    onOpen(room.roomId, evtId);
  };

  const renderOptions = () => (
    <Box shrink="No" gap="200" alignItems="Center">
      <Chip
        data-event-id={event.getId()}
        onClick={handleOpenClick}
        variant="Secondary"
        radii="Pill"
      >
        <Text size="T200">Open</Text>
      </Chip>
    </Box>
  );

  const sender = event.getSender()!;
  const displayName = getMemberDisplayName(room, sender) ?? getMxIdLocalPart(sender) ?? sender;
  const senderAvatarMxc = getMemberAvatarMxc(room, sender);
  const getContent = (() => event.getContent()) as GetContentCallback;

  const memberPowerTag = getMemberPowerTag(sender);
  const tagColor = memberPowerTag?.color
    ? accessibleTagColors?.get(memberPowerTag.color)
    : undefined;
  const tagIconSrc = memberPowerTag?.icon
    ? getPowerTagIconSrc(mx, useAuthentication, memberPowerTag.icon)
    : undefined;

  const usernameColor = legacyUsernameColor ? colorMXID(sender) : tagColor;

  const mEventId = event.getId();

  if (!mEventId) return null;

  return (
    <ModernLayout
      before={
        <AvatarBase>
          <Avatar size="300">
            <UserAvatar
              userId={sender}
              src={
                senderAvatarMxc
                  ? mxcUrlToHttp(mx, senderAvatarMxc, useAuthentication, 48, 48, 'crop') ??
                    undefined
                  : undefined
              }
              alt={displayName}
              renderFallback={() => <Icon size="200" src={Icons.User} filled />}
            />
          </Avatar>
        </AvatarBase>
      }
    >
      <Box gap="300" justifyContent="SpaceBetween" alignItems="Center" grow="Yes">
        <Box gap="200" alignItems="Baseline">
          <Box alignItems="Center" gap="200">
            <Username style={{ color: usernameColor }}>
              <Text as="span" truncate>
                <UsernameBold>{displayName}</UsernameBold>
              </Text>
            </Username>
            {tagIconSrc && <PowerIcon size="100" iconSrc={tagIconSrc} />}
          </Box>
          <Time ts={event.getTs()} hour24Clock={hour24Clock} dateFormatString={dateFormatString} />
        </Box>
        {renderOptions()}
      </Box>
      {event.replyEventId && (
        <Reply
          room={room}
          replyEventId={event.replyEventId}
          threadRootId={event.threadRootId}
          onClick={handleOpenClick}
          getMemberPowerTag={getMemberPowerTag}
          accessibleTagColors={accessibleTagColors}
          legacyUsernameColor={legacyUsernameColor}
        />
      )}
      {renderContent(event.getType(), false, mEventId, event, displayName, getContent)}
    </ModernLayout>
  );
}

type ThreadsTimelineProps = {
  timelines: EventTimeline[];
  requestClose: () => void;
};
export function ThreadsTimeline({ timelines, requestClose }: ThreadsTimelineProps) {
  const mx = useMatrixClient();
  const { navigateRoom } = useRoomNavigate();
  const alive = useAlive();
  const scrollRef = useRef<HTMLDivElement>(null);

  const room = useRoom();
  const powerLevels = usePowerLevelsContext();
  const creators = useRoomCreators(room);

  const creatorsTag = useRoomCreatorsTag();
  const powerLevelTags = usePowerLevelTags(room, powerLevels);
  const getMemberPowerTag = useGetMemberPowerTag(room, creators, powerLevels);

  const theme = useTheme();
  const accessibleTagColors = useAccessiblePowerTagColors(theme.kind, creatorsTag, powerLevelTags);

  const useAuthentication = useMediaAuthentication();
  const [mediaAutoLoad] = useSetting(settingsAtom, 'mediaAutoLoad');
  const [urlPreview] = useSetting(settingsAtom, 'urlPreview');

  const direct = useIsDirectRoom();
  const [legacyUsernameColor] = useSetting(settingsAtom, 'legacyUsernameColor');

  const [hour24Clock] = useSetting(settingsAtom, 'hour24Clock');
  const [dateFormatString] = useSetting(settingsAtom, 'dateFormatString');

  const mentionClickHandler = useMentionClickHandler(room.roomId);
  const spoilerClickHandler = useSpoilerClickHandler();

  const linkifyOpts = useMemo<LinkifyOpts>(
    () => ({
      ...LINKIFY_OPTS,
      render: factoryRenderLinkifyWithMention((href) =>
        renderMatrixMention(mx, room.roomId, href, makeMentionCustomProps(mentionClickHandler))
      ),
    }),
    [mx, room, mentionClickHandler]
  );
  const htmlReactParserOptions = useMemo<HTMLReactParserOptions>(
    () =>
      getReactCustomHtmlParser(mx, room.roomId, {
        linkifyOpts,
        useAuthentication,
        handleSpoilerClick: spoilerClickHandler,
        handleMentionClick: mentionClickHandler,
      }),
    [mx, room, linkifyOpts, mentionClickHandler, spoilerClickHandler, useAuthentication]
  );

  const renderMatrixEvent = useMatrixEventRenderer<
    [string, MatrixEvent, string, GetContentCallback]
  >(
    {
      [MessageEvent.RoomMessage]: (eventId, event, displayName, getContent) => {
        if (event.isRedacted()) {
          return <RedactedContent reason={event.getUnsigned().redacted_because?.content.reason} />;
        }

        const threadDetail = getEventThreadDetail(event);

        return (
          <>
            <RenderMessageContent
              displayName={displayName}
              msgType={event.getContent().msgtype ?? ''}
              ts={event.getTs()}
              getContent={getContent}
              edited={!!event.replacingEvent()}
              mediaAutoLoad={mediaAutoLoad}
              urlPreview={urlPreview}
              htmlReactParserOptions={htmlReactParserOptions}
              linkifyOpts={linkifyOpts}
              outlineAttachment
            />
            {threadDetail && (
              <ThreadSelectorContainer>
                <ThreadSelector
                  room={room}
                  threadId={eventId}
                  threadDetail={threadDetail}
                  outlined
                  hour24Clock={hour24Clock}
                  dateFormatString={dateFormatString}
                />
              </ThreadSelectorContainer>
            )}
          </>
        );
      },
      [MessageEvent.RoomMessageEncrypted]: (eventId, mEvent, displayName) => {
        const evtTimeline = room.getTimelineForEvent(eventId);

        return (
          <EncryptedContent mEvent={mEvent}>
            {() => {
              if (mEvent.isRedacted()) return <RedactedContent />;
              if (mEvent.getType() === MessageEvent.Sticker)
                return (
                  <MSticker
                    content={mEvent.getContent()}
                    renderImageContent={(props) => (
                      <ImageContent
                        {...props}
                        autoPlay={mediaAutoLoad}
                        renderImage={(p) => <Image {...p} loading="lazy" />}
                        renderViewer={(p) => <ImageViewer {...p} />}
                      />
                    )}
                  />
                );
              if (mEvent.getType() === MessageEvent.RoomMessage) {
                const editedEvent =
                  evtTimeline && getEditedEvent(eventId, mEvent, evtTimeline.getTimelineSet());
                const getContent = (() =>
                  editedEvent?.getContent()['m.new_content'] ??
                  mEvent.getContent()) as GetContentCallback;

                return (
                  <RenderMessageContent
                    displayName={displayName}
                    msgType={mEvent.getContent().msgtype ?? ''}
                    ts={mEvent.getTs()}
                    edited={!!editedEvent || !!mEvent.replacingEvent()}
                    getContent={getContent}
                    mediaAutoLoad={mediaAutoLoad}
                    urlPreview={urlPreview}
                    htmlReactParserOptions={htmlReactParserOptions}
                    linkifyOpts={linkifyOpts}
                  />
                );
              }
              if (mEvent.getType() === MessageEvent.RoomMessageEncrypted)
                return (
                  <Text>
                    <MessageNotDecryptedContent />
                  </Text>
                );
              return (
                <Text>
                  <MessageUnsupportedContent />
                </Text>
              );
            }}
          </EncryptedContent>
        );
      },
      [MessageEvent.Sticker]: (eventId, event, displayName, getContent) => {
        if (event.isRedacted()) {
          return <RedactedContent reason={event.getUnsigned().redacted_because?.content.reason} />;
        }

        const threadDetail = getEventThreadDetail(event);

        return (
          <>
            <MSticker
              content={getContent()}
              renderImageContent={(props) => (
                <ImageContent
                  {...props}
                  autoPlay={mediaAutoLoad}
                  renderImage={(p) => <Image {...p} loading="lazy" />}
                  renderViewer={(p) => <ImageViewer {...p} />}
                />
              )}
            />
            {threadDetail && (
              <ThreadSelectorContainer>
                <ThreadSelector
                  room={room}
                  threadId={eventId}
                  threadDetail={threadDetail}
                  outlined
                  hour24Clock={hour24Clock}
                  dateFormatString={dateFormatString}
                />
              </ThreadSelectorContainer>
            )}
          </>
        );
      },
    },
    undefined,
    (eventId, event) => {
      if (event.isRedacted()) {
        return <RedactedContent reason={event.getUnsigned().redacted_because?.content.reason} />;
      }
      return (
        <Box grow="Yes" direction="Column">
          <Text size="T400" priority="300">
            <code className={customHtmlCss.Code}>{event.getType()}</code>
            {' event'}
          </Text>
        </Box>
      );
    }
  );

  const handleOpen = (roomId: string, eventId: string) => {
    navigateRoom(roomId, eventId);
    requestClose();
  };

  const eventsLength = getTimelinesEventsCount(timelines);
  const timelineToPaginate = timelines[timelines.length - 1];
  const [paginationToken, setPaginationToken] = useState(
    timelineToPaginate.getPaginationToken(Direction.Backward)
  );

  const virtualizer = useVirtualizer({
    count: eventsLength,
    getScrollElement: () => scrollRef.current,
    estimateSize: () => 122,
    overscan: 10,
  });
  const vItems = virtualizer.getVirtualItems();

  const paginate = useCallback(async () => {
    const moreToLoad = await mx.paginateEventTimeline(timelineToPaginate, {
      backwards: true,
      limit: 30,
    });

    if (alive()) {
      setPaginationToken(
        moreToLoad ? timelineToPaginate.getPaginationToken(Direction.Backward) : null
      );
    }
  }, [mx, alive, timelineToPaginate]);

  // auto paginate when scroll reach bottom
  useEffect(() => {
    const lastVItem = vItems.length > 0 ? vItems[vItems.length - 1] : undefined;
    if (paginationToken && lastVItem && lastVItem.index === eventsLength - 1) {
      paginate();
    }
  }, [vItems, paginationToken, eventsLength, paginate]);

  return (
    <Scroll ref={scrollRef} size="300" hideTrack visibility="Hover">
      <Box className={css.ThreadsMenuContent} direction="Column" gap="100">
        <div
          style={{
            position: 'relative',
            height: virtualizer.getTotalSize(),
          }}
        >
          {vItems.map((vItem) => {
            const reverseTimelineIndex = eventsLength - vItem.index - 1;

            const [timeline, baseIndex] = getTimelineAndBaseIndex(timelines, reverseTimelineIndex);
            if (!timeline) return null;
            const event = getTimelineEvent(
              timeline,
              getTimelineRelativeIndex(reverseTimelineIndex, baseIndex)
            );

            if (!event?.getId()) return null;

            return (
              <VirtualTile
                virtualItem={vItem}
                style={{ paddingBottom: config.space.S200 }}
                ref={virtualizer.measureElement}
                key={vItem.index}
              >
                <SequenceCard
                  key={event.getId()}
                  style={{ padding: config.space.S400, borderRadius: config.radii.R300 }}
                  variant="SurfaceVariant"
                  direction="Column"
                >
                  <ThreadMessage
                    room={room}
                    event={event}
                    renderContent={renderMatrixEvent}
                    onOpen={handleOpen}
                    getMemberPowerTag={getMemberPowerTag}
                    accessibleTagColors={accessibleTagColors}
                    legacyUsernameColor={legacyUsernameColor || direct}
                    hour24Clock={hour24Clock}
                    dateFormatString={dateFormatString}
                  />
                </SequenceCard>
              </VirtualTile>
            );
          })}
        </div>
        {paginationToken && <ThreadsLoading />}
      </Box>
    </Scroll>
  );
}