인프런 커뮤니티 질문&답변

작성한 질문수

Slack 클론 코딩[실시간 채팅 with React]

안 읽은 메시지 개수 표시하기

안읽은메세지 개수 표시하기

작성

·

908

0

안녕하세요 제로초님

디엠부분에서는 안읽은 메시지 표시가 떠서 읽으면 없어지는데

채널부분에서는 없어지지않고 남아있습니다!

react 웹팩 typescript socket.io babel 클론코딩

답변 1

0

제로초(조현영)

지식공유자

이 부분도 정상 작동하는 것 확인했습니다. ㅠㅠ

질문자

음 채널부분은 추가하라고 하신데로

 useEffect(() => {
    localStorage.setItem(`${workspace}-${channel}}`, new Date().getTime().toString());
  }, [workspace, channel]);

이거 추가하고 EachChannel은 복붙해서 가져왔는데 보니까 채널부분은 채팅을 쳐야지만 안읽은 표시가 사라지네요

import ChatBox from '@components/ChatBox';
import ChatList from '@components/ChatList';
import InviteChannelModal from '@components/InviteChannelModal';
import useInput from '@hooks/useInput';
import useSocket from '@hooks/useSocket';
import { DragOver } from '@pages/Channel/styles';
import { Header, Container } from '@pages/DM/styles';
import { IChannel, IChat, IDM, IUser } from '@typings/db';
import fetcher from '@utils/fetcher';
import makeSection from '@utils/makeSection';
import axios from 'axios';
import { channel } from 'diagnostics_channel';
import gravatar from 'gravatar';
import React, { useCallback, useEffect, useRef, useState } from 'react';
import { Scrollbars } from 'react-custom-scrollbars';
import { Redirect, useParams } from 'react-router';
import { toast } from 'react-toastify';
import useSWR from 'swr';
import useSWRInfinite from 'swr/infinite';

const PAGE_SIZE = 20;
const Channel = () => {
  const { workspace, channel } = useParams<{ workspace: string; channel: string }>();
  const [showInviteChannelModal, setShowInviteChannelModal] = useState(false);
  const [socket] = useSocket(workspace);
  const { data: myData } = useSWR('/api/users', fetcher);
  const { data: userData } = useSWR<IUser>('/api/users', fetcher);
  const {
    data: chatData,
    mutate: mutateChat,
    setSize,
  } = useSWRInfinite<IChat[]>(
    (index) => `/api/workspaces/${workspace}/channels/${channel}/chats?perPage=${PAGE_SIZE}&page=${index + 1}`,
    fetcher,
    {
      onSuccess(data) {
        if (data?.length === 1) {
          setTimeout(() => {
            scrollbarRef.current?.scrollToBottom();
          }, 100);
        }
      },
    },
  );
  const { data: channelMembersData } = useSWR<IUser[]>(
    userData ? `/api/workspaces/${workspace}/channels/${channel}/members` : null,
    fetcher,
  );
  const { data: channelsData } = useSWR<IChannel[]>(`/api/workspaces/${workspace}/channels`, fetcher);
  const channelData = channelsData?.find((v) => v.name === channel);
  const [chat, onChangeChat, setChat] = useInput('');
  const scrollbarRef = useRef<Scrollbars>(null);
  const [dragOver, setDragOver] = useState(false);

  const isEmpty = chatData?.[0]?.length === 0;
  const isReachingEnd = isEmpty || (chatData && chatData[chatData.length - 1]?.length < PAGE_SIZE);

  useEffect(() => {
    if (chatData?.length === 1) {
      console.log('toBottomWhenLoaded', scrollbarRef.current);
      setTimeout(() => {
        console.log('scrollbar', scrollbarRef.current);
        scrollbarRef.current?.scrollToBottom();
      }, 500);
    }
  }, [chatData]);

  const onSubmitForm = useCallback(
    (e) => {
      e.preventDefault();
      if (chat?.trim() && chatData && channelData && userData) {
        const savedChat = chat;
        mutateChat((prevChatData) => {
          prevChatData?.[0].unshift({
            id: (chatData[0][0]?.id || 0) + 1,
            content: savedChat,
            UserId: myData.id,
            User: myData,
            ChannelId: channelData.id,
            Channel: channelData,
            createdAt: new Date(),
          });
          return prevChatData;
        }, false).then(() => {
          localStorage.setItem(`${workspace}-${channel}`, new Date().getTime().toString());
          setChat('');
          if (scrollbarRef.current) {
            console.log('scrollToBottom!', scrollbarRef.current?.getValues());
            scrollbarRef.current.scrollToBottom();
          }
        });
        axios
          .post(`/api/workspaces/${workspace}/channels/${channel}/chats`, {
            content: chat,
          })
          .catch(console.error);
      }
    },
    [chat, workspace, channel, channelData, userData, chatData, mutateChat, setChat],
  );

  const onClickInviteChannel = useCallback(() => {
    setShowInviteChannelModal(true);
  }, []);
  const onCloseModal = useCallback(() => {
    setShowInviteChannelModal(false);
  }, []);

  const onMessage = useCallback(
    (data: IChat) => {
      if (
        data.Channel.name === channel &&
        (data.content.startsWith('uploads\\') || data.content.startsWith('uploads/') || data.UserId !== userData?.id)
      ) {
        mutateChat((chatData) => {
          chatData?.[0].unshift(data);
          return chatData;
        }, false).then(() => {
          if (scrollbarRef.current) {
            if (
              scrollbarRef.current.getScrollHeight() <
              scrollbarRef.current.getClientHeight() + scrollbarRef.current.getScrollTop() + 150
            ) {
              console.log('scrollToBottom!', scrollbarRef.current?.getValues());
              setTimeout(() => {
                scrollbarRef.current?.scrollToBottom();
              }, 100);
            } else {
              toast.success('새 메시지가 도착했습니다.', {
                onClick() {
                  scrollbarRef.current?.scrollToBottom();
                },
                closeOnClick: true,
              });
            }
          }
        });
      }
    },
    [channel, mutateChat, userData],
  );

  useEffect(() => {
    socket?.on('message', onMessage);
    return () => {
      socket?.off('message', onMessage);
    };
  }, [socket, onMessage]);

  useEffect(() => {
    localStorage.setItem(`${workspace}-${channel}}`, new Date().getTime().toString());
  }, [workspace, channel]);

  //화면에 직접 이미지 드래그해서 옮기기
  const onDrop = useCallback(
    (e) => {
      e.preventDefault();
      console.log(e);
      const formData = new FormData();
      if (e.dataTransfer.items) {
        // Use DataTransferItemList interface to access the file(s)
        for (let i = 0; i < e.dataTransfer.items.length; i++) {
          // If dropped items aren't files, reject them
          if (e.dataTransfer.items[i].kind === 'file') {
            const file = e.dataTransfer.items[i].getAsFile();
            console.log('... file[' + i + '].name = ' + file.name);
            formData.append('image', file);
          }
        }
      } else {
        // Use DataTransfer interface to access the file(s)
        for (let i = 0; i < e.dataTransfer.files.length; i++) {
          console.log('... file[' + i + '].name = ' + e.dataTransfer.files[i].name);
          formData.append('image', e.dataTransfer.files[i]);
        }
      }
      axios.post(`/api/workspaces/${workspace}/dms/${channel}/images`, formData).then(() => {
        setDragOver(false);
        localStorage.setItem(`${workspace}-${channel}`, new Date().getTime().toString());
        mutateChat();
      });
    },
    [workspace, channel],
  );

  const onDragOver = useCallback((e) => {
    e.preventDefault();
    console.log(e);
    setDragOver(true);
  }, []);

  if (channelsData && !channelData) {
    return <Redirect to={`/workspace/${workspace}/channel/일반`} />;
  }
  const chatSections = makeSection(chatData ? chatData.flat().reverse() : []);

  return (
    <Container onDrop={onDrop} onDragOver={onDragOver}>
      <Header>
        <span>#{channel}</span>
        <div className="header-right" style={{ display: 'flex' }}>
          <span style={{ display: 'flex', alignItems: 'center' }}>{channelMembersData?.length}</span>
          <button
            onClick={onClickInviteChannel}
            className="c-button-unstyled p-ia__view_header__button"
            aria-label="Add people to #react-native"
            data-sk="tooltip_parent"
            type="button"
          >
            <i className="c-icon p-ia__view_header__button_icon c-icon--add-user" aria-hidden="true" />
          </button>
        </div>
      </Header>
      <ChatList
        scrollbarRef={scrollbarRef}
        isReachingEnd={isReachingEnd}
        isEmpty={isEmpty}
        chatSections={chatSections}
        setSize={setSize}
      />
      <ChatBox
        onSubmitForm={onSubmitForm}
        chat={chat}
        onChangeChat={onChangeChat}
        placeholder={`Message ${myData.nickname}`}
        data={[]}
      />
      <InviteChannelModal
        show={showInviteChannelModal}
        onCloseModal={onCloseModal}
        setShowInviteChannelModal={setShowInviteChannelModal}
      />
      {dragOver && <DragOver>업로드!</DragOver>}
    </Container>
  );
};

export default Channel;

제로초(조현영)

지식공유자

옆에 채널 메뉴 눌러서는 안 사라지는 건가요? 다른 채널 갔다가 와도요?

질문자

네 ㅠㅠ그대로입니다

채팅을 치고 다른채널을 눌러야지만 읽은표시가 사라집니다

제로초(조현영)

지식공유자

https://github.com/ZeroCho/sleact/blob/master/front/components/EachChannel/index.tsx#L17-L18

이 부분도 추가하셨나요? 여기서 숫자가 있을지 없을지 판단되는 겁니다.

제로초(조현영)

지식공유자

front 코드와 똑같다면 돼야 합니다 ㅠ

질문자

허허 혹시 EachChannel 이코드 아닌가요?

import { IChannel, IUser } from '@typings/db';
import fetcher from '@utils/fetcher';
import React, { useEffect, VFC } from 'react';
import { useParams } from 'react-router';
import { NavLink, useLocation } from 'react-router-dom';
import useSWR from 'swr';

interface Props {
  channel: IChannel;
}
const EachChannel: VFC<Props> = ({ channel }) => {
  const { workspace } = useParams<{ workspace?: string }>();
  const location = useLocation();
  const { data: userData } = useSWR<IUser>('/api/users', fetcher, {
    dedupingInterval: 2000, // 2초
  });
  const date = localStorage.getItem(`${workspace}-${channel.name}`) || 0;
  const { data: count, mutate } = useSWR<number>(
    userData ? `/api/workspaces/${workspace}/channels/${channel.name}/unreads?after=${date}` : null,
    fetcher,
  );

  useEffect(() => {
    if (location.pathname === `/workspace/${workspace}/channel/${channel.name}`) {
      mutate(0);
    }
  }, [mutate, location.pathname, workspace, channel]);

  return (
    <NavLink key={channel.name} activeClassName="selected" to={`/workspace/${workspace}/channel/${channel.name}`}>
      <span className={count !== undefined && count > 0 ? 'bold' : undefined}># {channel.name}</span>
      {count !== undefined && count > 0 && <span className="count">{count}</span>}
    </NavLink>
  );
};

export default EachChannel;

제가 뭐 잘못 건드렸나요... 혹시 Channel말고도 연관 되어있는 파일이 있을까요?

제로초(조현영)

지식공유자

https://github.com/ZeroCho/sleact/blob/master/front/components/ChannelList/index.tsx

EachChannel은 ChannelList에서 쓰이므로 여기도 봐보세요. 저 부분 리렌더링이 안 되는 것 같기도 하고요.

질문자

import { CollapseButton } from '@components/DMList/styles';
import EachChannel from '@components/EachChannel';
import { IChannel, IUser } from '@typings/db';
import fetcher from '@utils/fetcher';
import React, { FC, useCallback, useState } from 'react';
import { useParams } from 'react-router';
import useSWR from 'swr';

interface Props {
  channelData?: IChannel[];
  userData?: IUser;
}

const ChannelList: FC<Props> = () => {
  const { workspace } = useParams<{ workspace?: string }>();
  const [channelCollapse, setChannelCollapse] = useState(false);
  const { data: userData } = useSWR<IUser>('/api/users', fetcher, {
    dedupingInterval: 2000, // 2초
  });
  const { data: channelData } = useSWR<IChannel[]>(userData ? `/api/workspaces/${workspace}/channels` : null, fetcher);

  const toggleChannelCollapse = useCallback(() => {
    setChannelCollapse((prev) => !prev);
  }, []);

  return (
    <>
      <h2>
        <CollapseButton collapse={channelCollapse} onClick={toggleChannelCollapse}>
          <i
            className="c-icon p-channel_sidebar__section_heading_expand p-channel_sidebar__section_heading_expand--show_more_feature c-icon--caret-right c-icon--inherit c-icon--inline"
            data-qa="channel-section-collapse"
            aria-hidden="true"
          />
        </CollapseButton>
        <span>Channels</span>
      </h2>
      <div>
        {!channelCollapse &&
          channelData?.map((channel) => {
            return <EachChannel key={channel.id} channel={channel} />;
          })}
      </div>
    </>
  );
};

export default ChannelList;

sleact /back 폴더에서 npm run dev하고 실행하는건 맞죠?

질문자

EachChannel이랑 channelList 제로초님 코드 그대로 가져다 썼는데 안읽은메세지 갯수가 사라지지가 않네요 한번 계속 타고 올라가 보겠습니다

작성한 질문수