Proyectos de Subversion LeadersLinked - Antes de SPA

/* eslint-disable react/prop-types */

import React, { useEffect, useRef, useState } from 'react'

import EmptySection from '../../shared/empty-section/EmptySection'

import MessageBox from './MessageBox'

import MessageTemplate from './MessageTemplate'

import SpeakerNotesOffRoundedIcon from '@mui/icons-material/SpeakerNotesOffRounded'

import QuestionAnswerRoundedIcon from '@mui/icons-material/QuestionAnswerRounded'

import { useDispatch } from 'react-redux'

import { fetchMessages, getMessagesDifferences, cancelFetch } from '../../services/chat'

import { addNotification } from '../../redux/notification/notification.actions'

import { axios, scrollToBottom } from '../../utils'

import { ArrowLeft } from '@mui/icons-material'

const DEFAULT_PAGES = { current: 1, last: 1 }

const Chatmail = ({

  selectedConversation = null,

  setConversation = () => null

}) => {

  const [oldMessages, setOldMessages] = useState([])

  const [messages, setMessages] = useState([])

  const [pages, setPages] = useState(DEFAULT_PAGES)

  const [loading, setLoading] = useState(false)

  const lastMessage = useRef(null)

  const dispatch = useDispatch()

  const getMessages = async (url = '', page = pages.current) => {

    try {

      setLoading(true)

      const response = await fetchMessages(url, page)

      if (!response.success) {

        const errorMessage = response.data

        dispatch(addNotification({ style: 'danger', msg: errorMessage.message }))

        return

      }

      const newMessages = getMessagesDifferences(messages, response.data)

      if (response.pagination.current > 1) {

        setOldMessages([...response.data, ...oldMessages])

      }

      if (newMessages.length) {

        setMessages([...messages, ...newMessages])

        scrollToBottom()

      } else {

        setMessages(response.data)

      }

      setPages((prevPages) => ({ ...prevPages, last: response.pagination.last }))

    } catch (error) {

      const errorMessage = new Error(error)

      console.log('Request canceled', errorMessage)

    } finally {

      setLoading(false)

    }

  }

  const handleSend = async (sendUrl = '', message = {}) => {

    try {

      const formData = new FormData()

      Object.entries(message).forEach(([key, value]) => formData.append(key, value))

      const { data: response } = await axios.post(sendUrl, formData)

      setMessages(prev => [response.data, ...prev])

    } catch (error) {

      const errorMessage = new Error(error)

      dispatch(addNotification({ style: 'danger', msg: errorMessage.message }))

    }

  }

  const changeConversation = (conversation) => {

    setPages(DEFAULT_PAGES)

    setConversation(conversation)

    getMessages(selectedConversation.messages_link)

  }

  const loadMore = async () => {

    setPages((prevPages) => ({ ...prevPages, current: prevPages.current + 1 }))

  }

  useEffect(() => {

    let timer

    if (!loading && selectedConversation) {

      timer = setTimeout(() => getMessages(selectedConversation.messages_link), 2000)

    }

    return () => {

      clearTimeout(timer)

    }

  }, [loading, selectedConversation])

  useEffect(() => {

    if (selectedConversation && pages.current < pages.last) getMessages(selectedConversation?.messages_link)

  }, [pages.current])

  useEffect(() => {

    const observer = new IntersectionObserver(([entry]) => {

      if (entry.isIntersecting) {

        cancelFetch()

        loadMore()

      }

    })

    if (lastMessage.current) observer.observe(lastMessage.current)

  }, [messages])

  if (!selectedConversation) {

    return <EmptySection message={LABELS.SELECT_CONVERSATION} Icon={<QuestionAnswerRoundedIcon/>} />

  }

  return (

    <div className='chat'>

      <span className='icon-hide' onClick={() => changeConversation(null)}>

        <ArrowLeft />

        {LABELS.RETURN}

      </span>

      <a href={selectedConversation.profile}>

        <h2 className='chat-header'>{selectedConversation.name}</h2>

      </a>

      <div className="messages-line">

        {messages.length

          ? [...oldMessages, ...messages].map((element, index) =>

            <MessageTemplate

              key={index}

              message={element}

              date={element.date}

            />)

          : <EmptySection message={LABELS.NO_MESSAGE_CONVERSATION} Icon={<SpeakerNotesOffRoundedIcon/>} />

        }

        {(!loading && pages.current < pages.last) && <hr ref={lastMessage} style={{ visibility: 'hidden' }} />}

      </div>

      <MessageBox onSend={handleSend} sendUrl={selectedConversation.send_link}/>

    </div>

  )

}

export default Chatmail