Global-sales/src/views/Conversations/Components/MessagesList.jsx

import { useEffect, useRef, useState, forwardRef, memo } from 'react';
import { MessageBox } from 'react-chat-elements';
import { Button } from 'antd';
import { DownOutlined } from '@ant-design/icons';
import { useShallow } from 'zustand/react/shallow';
import useConversationStore from '@/stores/ConversationStore';
import { isEmpty, olog } from '@/utils/utils';

const MessagesList = ({ messages, handlePreview, reference }) => {
  const setReferenceMsg = useConversationStore(useShallow((state) => state.setReferenceMsg));

  // const messagesEndRef = useRef(null);
  const messageRefs = useRef([]);
  const [page, setPage] = useState(1);
  let timeout = null;

  const fetchNextPage = async () => {
    olog('fetchNextPage')
    setPage(page + 1);
    // Fetch next page of messages here
  };

  const handleScroll = (e) => {
    const { scrollTop } = e.target;
    const delay = 1000; // 1 second

    if (scrollTop === 0) {
      if (timeout) clearTimeout(timeout);
      timeout = setTimeout(fetchNextPage, delay);
    }
  };

  const scrollToBottom = () => {
    if (reference.current) {
      reference.current.scrollTop = reference.current.scrollHeight;
    }
  };

  const scrollToMessage = (id, index) => {
    const _i = index || messages.findIndex((msg) => msg.id === id);
    if (reference.current && messageRefs.current[_i]) {
      reference.current.scrollTop = messageRefs.current[_i].offsetTop;
    }
  };

  useEffect(scrollToBottom, [messages]);

  useEffect(() => {
    const messageList = reference.current;
    if (messageList) {
      messageList.addEventListener('scroll', handleScroll);
    }
    return () => {
      if (messageList) {
        messageList.removeEventListener('scroll', handleScroll);
      }
    };
  }, []);

  const RenderText = memo(function renderText({ str }) {
    const parts = str.split(/(https?:\/\/[^\s]+|\p{Emoji_Presentation})/gmu).filter((s) => s !== '');
    const links = str.match(/https?:\/\/[\S]+/gi) || [];
    const emojis = str.match(/([\u2700-\u27BF]|[\uE000-\uF8FF]|\uD83C[\uDC00-\uDFFF]|\uD83D[\uDC00-\uDFFF]|[\u2011-\u26FF]|\uD83E[\uDD10-\uDDFF])/g) || [];
    const extraClass = isEmpty(emojis) ? '' : 'text-base leading-5 emoji-text';
    const objArr = parts.reduce((prev, curr, index) => {
      if (links.includes(curr)) {
        prev.push({ type: 'link', key: curr });
      } else if (emojis.includes(curr)) {
        prev.push({ type: 'emoji', key: curr });
      } else {
        prev.push({ type: 'text', key: curr });
      }
      return prev;
    }, []);
    return (
      <span className={extraClass}>
        {(objArr || []).map((part, index) => {
          if (part.type === 'link') {
            return (
              <a href={part.key} target='_blank' key={`${part.key}${index}`} rel='noreferrer' className='text-sm'>
                {part.key}
              </a>
            );
          } else {
            // if (part.type === 'emoji')
            return part.key;
          }
        })}
      </span>
    );
  });

  // eslint-disable-next-line react/display-name
  const MessageBoxWithRef = forwardRef((props, ref) => (
    <div ref={ref}>
      <MessageBox {...props} />
    </div>
  ));

  return (
    <div className='relative h-full overflow-y-auto overflow-x-hidden flex flex-1'>
      <div ref={reference} className='relative overflow-y-auto overflow-x-hidden block flex-1'>
        {messages.map((message, index) => (
          <MessageBoxWithRef
            ref={(el) => (messageRefs.current[index] = el)}
            key={message.id}
            {...message}
            position={message.sender === 'me' ? 'right' : 'left'}
            onReplyClick={() => setReferenceMsg(message)}
            onReplyMessageClick={() => scrollToMessage(message.reply.id)}
            onOpen={() => handlePreview(message)}
            onTitleClick={() => handlePreview(message)}
            text={<RenderText str={message?.text || ''} />}
            {...(message.sender === 'me'
              ? {
                  styles: { backgroundColor: '#ccd4ae' },
                  notchStyle: { fill: '#ccd4ae' },
                  replyButton: ['text', 'document', 'image'].includes(message.whatsapp_msg_type) && message.status !== 'failed' ? true : false,
                  className: 'whatsappme-container whitespace-pre-wrap',
                }
              : {
                  replyButton: ['text', 'document', 'image'].includes(message.whatsapp_msg_type) ? true : false,
                  className: ['whitespace-pre-wrap', message.whatsapp_msg_type === 'sticker' ? 'bg-transparent' : ''].join(' '),
                })}
            {...(message.type === 'meetingLink'
              ? {
                  actionButtons: [
                    {
                      onClickButton: () => {
                        navigator.clipboard.writeText(message.text);
                      },
                      Component: () => <div>复制</div>,
                    },
                  ],
                }
              : {})}
          />
        ))}
      </div>
      <Button onClick={scrollToBottom} ghost type={'dashed'} shape={'circle'} className=' absolute bottom-1 right-4' icon={<DownOutlined />} />
    </div>
  );
};

export default MessagesList;