doneit-web/src/app/services/chat/room.service.ts

import { Injectable } from '@angular/core';
import { RochetChatConnectorService } from 'src/app/services/chat/rochet-chat-connector.service';
import { MessageService } from 'src/app/services/chat/message.service';
import { showDateDuration } from 'src/plugin/showDateDuration';
import { chatHistory } from 'src/app/models/chatMethod';
import { Storage } from '@ionic/storage';
import { Platform } from '@ionic/angular';
import { SqliteService } from 'src/app/services/sqlite.service';
import { NativeNotificationService } from 'src/app/services/native-notification.service';
import { SessionStore } from 'src/app/store/session.service';
import { capitalizeTxt } from 'src/plugin/text'
import { SortService } from '../functions/sort.service';
import { chatUser } from 'src/app/models/chatMethod';
import { environment } from 'src/environments/environment';
import { ChatService } from 'src/app/services/chat.service';
import { NfService } from 'src/app/services/chat/nf.service';
import { v4 as uuidv4 } from 'uuid'
import { ChatMethodsService } from './chat-methods.service';
import { DeleteMessageModel, MessageModel } from '../../models/beast-orm';
import { AESEncrypt } from '../aesencrypt.service';
import { IncomingChatMessage, ChatMessageInterface, falseTypingMethod } from 'src/app/models/message.model';
import { AttachmentsService } from 'src/app/services/attachments.service';
import { ConnectionStatus, NetworkServiceService} from 'src/app/services/network-service.service';
import { ChatSystemService } from './chat-system.service';
import { ViewedMessageService } from './viewed-message.service'
import * as FIFOProcessQueue from 'fifo-process-queue';

@Injectable({
  providedIn: 'root'
})
export class RoomService {

  messages: MessageService[] = []
  storageMessage: any[] = [];
  lastMessage: MessageService;

  customFields: any;
  id = ''
  t = ''
  name = ''
  _updatedAt = {}
  hasLoadHistory = false
  restoreFromOffline = false
  duration = ''
  isTyping = false
  otherUserType = false
  lastTimeType = null
  message = ''
  lastMessageTxt = ''
  userThatIsTyping = ''
  messagesLocalReference: string[] = []
  members: chatUser[] = []
  membersExcludeMe: chatUser[] = []
  u
  sessionStore = SessionStore
  countDownTime = ''
  chatOpen  = false
  messageUnread = false

  status = {
    receive: {
      message: false,
      typing: false,
      readMessage: false,
      deleteMessage: false
    }
  }

  isGroup: boolean
  subscribeAttempt = false

  scrollDown = () => { }

  /**
   * @description get user list from ws-chat-methods.service
   * @returns chatUser[]
   */
  getAllUsers  = (): chatUser[]  => {
    return []
  }

  sortRoomList = () => {}
  chatServiceDeleteRoom = (roomId) => {}

  constructor(
    public RochetChatConnectorService: RochetChatConnectorService,
    private MessageService: MessageService,
    private storage: Storage,
    private platform: Platform,
    private sqlservice: SqliteService,
    private NativeNotificationService: NativeNotificationService,
    private sortService: SortService,
    private chatService: ChatService,
    private NfService: NfService,
    private ChatMethodsService: ChatMethodsService,
    private AESEncrypt: AESEncrypt,
    private AttachmentsService: AttachmentsService,
    private NetworkServiceService: NetworkServiceService,
    private ChatSystemService: ChatSystemService,
    private ViewedMessageService: ViewedMessageService
  ) {
    this.NativeNotificationService.askForPermission()

    this.RochetChatConnectorService.getUserStatus((d) => {

      const userId = d.fields.args[0][0]
      const statusNum = d.fields.args[0][2]
      const statusText = this.statusNumberToText(statusNum)

      this.ViewedMessageService.request(this, userId, statusNum, statusText)

    })

    this.RochetChatConnectorService.registerCallback({
      type: 'Offline',
      funx: () => {
        /**
         * @description when the phone is in the background for a long time it could disconnects from the socket then the socket reconnects automatically,
         *  when the connection is lost the subscribe is also lost, so we have to subscribe again when reconnection is establish.
         */
        this.resetStatus();
        this.hasLoadHistory = false
        this.subscribeAttempt = false
      }
    })

  }

    /**
   * @description convert rocketchat statues num to readable string
   * @param text
   * @returns
   */
  statusNumberToText(text) {
    if(text == '0') {
      return "offline"
    }
    else if(text == '1') {
      return "online"
    }
    else if(text == '2') {
      return "away"
    }
    else if(text == '3') {
      return "busy"
    }
  }


  resetStatus() {
    this.status = {
      receive: {
        message: false,
        typing: false,
        readMessage: false,
        deleteMessage: false
      }
    }
  }

  setData({membersExcludeMe, members, u, customFields = {}, id, name, t, lastMessage = new MessageService(this.NfService, this.RochetChatConnectorService, this.ChatMethodsService, this.AESEncrypt, this.AttachmentsService, this.NetworkServiceService, this.ChatSystemService), _updatedAt }) {
    this.customFields = customFields
    this.id = id
    this.name = name
    this.t = t
    this.lastMessage = lastMessage
    this._updatedAt = _updatedAt
    this.u = u
    this.members = members
    this.membersExcludeMe  = membersExcludeMe

    this.calDateDuration()
    this.restoreMessageFromDB()

    if(this.customFields?.countDownDate) {
      this.countDownDate(this.customFields.countDownDate);
    }

  }

  updateInfo() {
    // this.chatService.getRoomInfo(this.id).toPromise();

  }

  get online() {
    
    if(!this.isGroup) {
      for(let user of this.ChatSystemService.users) {

        for (const members of this.membersExcludeMe) {
          if(members._id == user._id) {
            return user.status
          }
        }
        
      }
    }

    return 'offline'
  }

  countDownDate(date) {
    let difference = new Date(date).getTime() - new Date().getTime();
    let c_day = Math.floor(difference/(1000*60*60*24));
    let c_hours = Math.floor((difference % (1000*60*60*24)) / (1000*60*60));
    let c_minutes = Math.floor((difference % (1000*60*60)) / (1000*60));
    let c_seconds = Math.floor((difference % (1000*60)) / 1000);

    this.countDownTime = this.addZero(c_day) + " : " + this.addZero(c_hours) + " : " + this.addZero(c_minutes) + " : " + this.addZero(c_seconds) ;

    if(difference < 0) {

      this.deleteRoom();

    } else {
      setTimeout(() => {
        this.countDownDate(date)
      }, 1000)
    }
  }

  addZero(i) {
    if (i < 10) {
      i = "0" + i;
    }
    return i;
  }

  deleteRoom() {
    this.countDownTime = "Expired";
    let body = { "roomId": this.id }

    // this.chatService.getRoomInfo(this.id).subscribe( room =>{});

    if(this.t === 'p') {
      this.chatService.deleteGroup(body).subscribe(res=>{
        this.ChatSystemService.deleteRoom(this.id);
        this.ChatSystemService.getAllRooms();
        this.chatServiceDeleteRoom(this.id);
      });
    }
    else {
      this.chatService.deleteChannel(body).subscribe(res=>{ 
        this.ChatSystemService.deleteRoom(this.id);
        this.ChatSystemService.getAllRooms();
        this.chatServiceDeleteRoom(this.id);
      });
    }
  }


  isSenderIsNotMe(ChatMessage) {
    return SessionStore.user.UserName != ChatMessage.u.username
  }

  senderId(ChatMessage) {
    return ChatMessage.u._id
  }

  receiveMessage() {

    this.RochetChatConnectorService.updateRoomEventss(
      this.id,
      "stream-room-messages",
      async (IncomingChatMessage:IncomingChatMessage) => {

        this.appendReceiveMessage.push(IncomingChatMessage)

      }
    )

    this.RochetChatConnectorService.receiveStreamNotifyRoom((message) => {

      if(message.fields.eventName == this.id+'/'+'typing') {

        const args = message.fields.args

        if (typeof args[1] != 'object') {
          this.userThatIsTyping = this.usernameToDisplayName(args[0])
          
          this.isTyping =  args[1]
          this.otherUserType = args[1]

          const user = args[0]
          if(SessionStore.user.UserName != user) {
            this.readAllMessage()
          }

        } else if(args[0]?.method == 'viewMessage' || args[1]?.method == 'viewMessage') {
          const user = args[0]

          if(SessionStore.user.UserName != user) {
            this.readAllMessage()
          }

        } else if(args[0]?.method == 'deleteMessage' || args[1]?.method == 'deleteMessage') {
          
          this.deleteMessage(args[1]?.method?._id)
          
        } else {

        }

      } else if (message.fields.eventName == this.id+'/'+'deleteMessage') {}

    })
  }

  appendReceiveMessage = FIFOProcessQueue(async (IncomingChatMessage:IncomingChatMessage, done) => {

    let IncomingChatMessageArgs = IncomingChatMessage.fields.args[0]
    let ChatMessage : ChatMessageInterface = this.fix_updatedAt(IncomingChatMessageArgs)


    let found = this.findMessageBy_id(ChatMessage._id) || 
    this.findMessageBy_localReference(ChatMessage?.localReference)
    // || await this.findMessageInDBByData({_id:ChatMessage._id, localReference:ChatMessage.localReference })

    if(!found) {

      ChatMessage.origin = 'stream'      
      const message = await this.prepareCreate({message: ChatMessage, save: true});
      this.registerSendMessage(message)

      message.from = 'stream'
      message.loadHistory = this.hasLoadHistory

      this.lastMessage = message;
      this.calDateDuration(ChatMessage._updatedAt);

      if (message.t == 'r') {
        this.name = message.msg;
      }

      if(this.isSenderIsNotMe(ChatMessage)) {
        this.NativeNotificationService.sendNotificationChat({
          message: message.msg,
          title: this.name
        });
      }
      
      if(this.hasLoadHistory == true) {
        await message.addMessageDB()
      }

      if(this.chatOpen == false) {
        this.messageUnread = true
      }

      setTimeout(()=>{
        this.scrollDown()
      }, 50)  
      
    }

    setTimeout(() => {
      done()
    }, 5)
  })

  getUsersByStatus(status: 'offline' | 'online') {

    return this.getAllUsers().filter((user => {
      for(const member of this.membersExcludeMe) {
        if(user._id == member._id && user.status == status) {
          return true
        }
      }
    }))

  }

  getRoomMembersIds(): string[] {
    try {
      return this.membersExcludeMe.map((user)=> user._id)
    } catch(error) {
      return []
    }
    
  }

  getAllMemberThatIsNotOffline(): string[] {

    const membersIds = this.getRoomMembersIds()
    const allChatUsers = this.getAllUsers()

    const AllMemberThatIsNotOffline = []

    for(let user of allChatUsers) {
      if(membersIds.includes(user._id)) {

        if(user.status != 'offline') {
          AllMemberThatIsNotOffline.push(user._id)
        }
      }
    }

    return AllMemberThatIsNotOffline
  }

  getAllMemberThatIsOffline(): string[] {

    const membersIds = this.getRoomMembersIds()
    const allChatUsers = this.getAllUsers()

    const AllMemberThatIsNotOffline = []

    for(let user of allChatUsers) {
      if(membersIds.includes(user._id)) {

        if(user.status == 'offline') {
          AllMemberThatIsNotOffline.push(user._id)
        }
      }
    }

    return AllMemberThatIsNotOffline
  }


  async deleteMessageToReceive(userId) {
    
    const allDeleteMessages = await DeleteMessageModel.filter({rid: this.id}).execute()

    for(let message_ of allDeleteMessages) {
      
      if(message_.needToReceiveBy.includes(userId)) {

        message_.needToReceiveBy = message_.needToReceiveBy.filter((e)=> e != userId)
        this.sendFalseTypingReadMessage('deleteMessage',{_id:message_.messageId})

        if(message_.needToReceiveBy.length == 0) {
          
          const deleteMessage = await DeleteMessageModel.get({messageId: message_.messageId})
          await deleteMessage.delete()

        } else {
          await DeleteMessageModel.update(message_)
        }

      }
      
    }

  } 

  async receiveMessageDelete() {

    this.RochetChatConnectorService.updateRoomEventss(
      this.id,
      "stream-notify-room",
      async (ChatMessage) => {
        const DeletedMessageId = ChatMessage.fields.args[0]._id;

        const message = this.messages.find((e) => e._id == DeletedMessageId)

        if(message.delate == false) {
          this.deleteMessage(DeletedMessageId)
        }
        
      }
    )
  }

  /**
   * @description delete message in the view
   * @param id message ID
   */
   async deleteMessage(_id) {
    
    const id = _id

    for (let i =0; i <= this.messages.length; i++) {

      if(this.messages[i]?._id == id ) {

        
        if (SessionStore.user.UserName == this.messages[i]?.u?.username) {
          const allMemberThatIsOffline = this.getAllMemberThatIsOffline()
          
          DeleteMessageModel.create({
            messageId: this.messages[i]._id,
            rid: this.messages[i].rid,
            ts: this.messages[i].ts,
            u: this.messages[i].u,
            needToReceiveBy: allMemberThatIsOffline
          })
        }
        
        this.messages[i]?.delateDB()
        this.messages.splice(i, 1)

        //Get previous last message from room
        const previousLastMessage = this.messages.slice(-1)[0];

        if(previousLastMessage) {
          this.lastMessage = previousLastMessage;
          // console.log("last message"+ previousLastMessage)
          this.calDateDuration(previousLastMessage._updatedAt)
          this.sortRoomList()
        }


        return true

      } else {
        // 
      }
    }

  }


  deleteAll() {
    this.messages.forEach((message) => {
      if(message?._id) {
        this.sendDeleteRequest(message._id)
      }
    })
  }

  async delateMessageToSendToOthers(userId) {
    
    const deleteMessage = await DeleteMessageModel.all();

    const toSend = deleteMessage.filter((DeleteMessage:string[])=> ! DeleteMessage.includes(userId))

  }


  async sendDeleteRequest(msgId) {

    const message = this.messages.find((e)=>e._id == msgId)
    await message.delateStatusFalse()

    if(this.NetworkServiceService.getCurrentNetworkStatus() == ConnectionStatus.Online) {
      
      this.RochetChatConnectorService.deleteMessage(msgId).then(async() => {
        message.delateRequest = true
        await message.saveChanges();
        this.deleteMessage(msgId);
      })

    } else {
      this.RochetChatConnectorService.registerCallback({
        type: 'reConnect',
        funx: async ()=> {
          
          this.sendDeleteRequest(msgId)
          return true
        }
      })
    }

  }


  /**
   *  @description sen text message
   */
  async send({file = null, attachments = null, temporaryData = {}}) {

    const localReference = uuidv4();

    let offlineChatMessage = {
      rid: this.id,
      msg: this.message,
      attachments,
      file,
      temporaryData,
      localReference,
      origin: 'local'
    }

    this.message= ''
    
    const message: MessageService = await this.prepareCreate({message:offlineChatMessage, save: environment.chatOffline})
    this.registerSendMessage(message)

    if(this.hasLoadHistory == true) {
      await message.addMessageDB()
    }
    
    message.send()
    message.from = 'send'
    message.loadHistory = this.hasLoadHistory

    if (environment.chatOffline) {
      
      setTimeout(() => {
        this.scrollDown()
      }, 150)

      this.lastMessage = message
      this.calDateDuration(message._updatedAt)
      this.sortRoomList()
    }
  }


  /**
   * Register all send message so that
   * the incoming message wont be confuse to
   * other user the localReference is the identifier
   */
  registerSendMessage(message: MessageService) {
    this.messagesLocalReference.push(message.localReference)
  }


  localReferenceExist(message: MessageService) {
    for( const localReference of this.messagesLocalReference) {
      if(localReference == message?.localReference) {
        return true
      }
    }
    return false
  }

  sendTyping(text:string = this.message) {

    if(this.lastMessageTxt == text) { return false }
    this.lastTimeType = new Date().getTime()

    const lastIsTyping = this.isTyping
    if(text.length >= 1) {
      this.isTyping = true
    } else {
      this.isTyping = false
    }

    if(lastIsTyping != this.isTyping) {
      this.RochetChatConnectorService.sendStreamNotifyRoom(this.id, SessionStore.user.UserName, 'typing', this.isTyping).catch((error) => console.error(error));
    }

    this.lastMessageTxt = this.message
    this.typingWatch()
  }

  sendFalseTypingReadMessage(method,param: object) {
    this.RochetChatConnectorService.sendStreamNotifyRoom(this.id, SessionStore.user.UserName, 'typing', {method:method, params: param} as falseTypingMethod).catch((error) => console.error(error))
    this.setTypingOff()
  }

  private typingWatch() {
    setTimeout(() => {
      const now = new Date().getTime()

      if((now - this.lastTimeType) >= 2888) {

        if(this.isTyping == true) {
          this.isTyping = false
          this.RochetChatConnectorService.sendStreamNotifyRoom(this.id, SessionStore.user.UserName, 'typing', this.isTyping).catch((error) => console.error(error))
        }
      }

    }, 3000)
  }

  private setTypingOff() {
    this.sendTyping('')
  }

  roomLeave() {
    this.setTypingOff()
    this.chatOpen = false
  }

  open() {
    // this.typing(this.message)
    this.chatOpen = true
    this.messageUnread = false
    this.sendReadMessage()
  }


  leave(rid?) {
    this.RochetChatConnectorService.leaveRoom(this.id).catch((error) => console.error(error))
  }

  isJson(str) {
    try {
      JSON.parse(str);
    } catch (e) {
      return "";
    }
    return JSON.parse(str);
  }


  restoreOnce = false
  async restoreMessageFromDB() {
    if(environment.chatOffline && this.restoreOnce == false) {
      this.restoreOnce = true

      const messages = await MessageModel.filter({rid:this.id}).execute()

      for (let  ChatMessage of messages) { 
        const wewMessage = await this.simplePrepareMessage(ChatMessage)
        wewMessage.from = 'Offline'
        wewMessage.loadHistory = this.hasLoadHistory

        if(wewMessage.offline == false) {

          const message = await this.prepareCreate({message:ChatMessage})
          message.from = 'Offline'
          message.loadHistory = this.hasLoadHistory
          message?.decryptMessage()
          
        } else {
          
          const offlineMessage = await this.prepareCreate({message:ChatMessage})

          offlineMessage.from = 'Offline'
          offlineMessage.loadHistory = this.hasLoadHistory
          this.registerSendMessage(offlineMessage)
          offlineMessage?.decryptMessage()
          offlineMessage.send()
          // console.log('send offline', ChatMessage)

        }

        if(wewMessage.delate && !wewMessage.offline && !wewMessage.delateRequest) {
          this.sendDeleteRequest(wewMessage._id)
        }
      }
      
      setTimeout(() => {
        this.scrollDown()
      }, 50)

    }
  }

  // runs onces only

  async loadHistory({limit = 1000, forceUpdate = false }) {

    if(forceUpdate == false) {
      if (this.hasLoadHistory) {
        return false
      }
    }

    const chatHistory: chatHistory = await this.RochetChatConnectorService.loadHistory(this.id, limit)

    if(chatHistory?.result?.messages) {
      const messagesId =  this.messages.map((message)=> message._id)

      const users = this.getUsersByStatus('online')

      for(let message of chatHistory.result.messages.reverse()) {
        if (!messagesId.includes(message._id)) {
          message.origin = 'history'
          const messagesToSave  = await this.prepareMessageCreateIfNotExist({message: message});
          if(messagesToSave != null) {

            messagesToSave.received = users.map((user) => user._id)
            messagesToSave.addMessageDB()
            
            // console.log('add history', message)
          } else {
            // console.log('exit')
          }
        } else {
          // console.log('exit')
        }
      }


      setTimeout(() => {
        this.scrollDown()
      }, 50)
  
      this.hasLoadHistory = true
    }

  }

  async readAllMessage() {

    this.ViewedMessageService.requestReadAll(this)

  }



  async ChatMessageIsPresentInTheView(ChatMessage:ChatMessageInterface) {
    let foundIndex;

    const found = this.messages.find((MessageService, index) => {
      if (MessageService._id == ChatMessage._id) {
        foundIndex = index
        return true
      } else {
        return false
      }
    })

    if (foundIndex) {
      return { found, foundIndex}
    } else {
      return false
    }
  }




  async prepareCreate({message, save = true}): Promise<MessageService> {
    message = this.fix_updatedAt(message)

    const wewMessage = new MessageService(this.NfService, this.RochetChatConnectorService, this.ChatMethodsService, this.AESEncrypt, this.AttachmentsService, this.NetworkServiceService, this.ChatSystemService)
    wewMessage.setData(message)
    wewMessage.loadHistory = this.hasLoadHistory
    
    this.messages.push(wewMessage)

    return wewMessage
  }


  simplePrepareMessage(message) {
    message = this.fix_updatedAt(message)
    const wewMessage = new MessageService(this.NfService, this.RochetChatConnectorService, this.ChatMethodsService, this.AESEncrypt, this.AttachmentsService, this.NetworkServiceService, this.ChatSystemService)
    wewMessage.setData(message)
    wewMessage.loadHistory = this.hasLoadHistory

    return wewMessage
  }


  private findMessageBy_id (id) {
    for( let m of this.messages) {
      if(m._id == id) {
        return true
      }
    }

    return false
  }

  private findMessageBy_localReference (localReference) {
    for( let m of this.messages) {
      if(m.localReference == localReference) {
        return true
      }
    }

    return false
  }

  private async findMessageInDBByLocalReference({localReference}) {
    const a  = await MessageModel.get({localReference: localReference})
    
    return typeof a.id == 'number'
  }

  private async findMessageInDBByLocalId({_id}) {
    const a  = await MessageModel.get({_id: _id})
    return typeof a.id == 'number'
  }

  private async findMessageInDBByData({localReference, _id}) {
    
    // console.log('look')
    const a  = await MessageModel.filter({localReference: localReference})
    if(a.length >= 1)  {
      // console.log('localReference', localReference)
      return true
    }

    const c  = await MessageModel.filter({_id: _id})
    if(c.length >= 1)  {
      // console.log('_id', _id)
      return true
    }

    // console.log('look not found')
    return false
  }

  async prepareMessageCreateIfNotExist({message}) {
    message = this.fix_updatedAt(message)

    let found = await this.findMessageBy_id(message._id) || this.findMessageBy_localReference(message.localReference)
    // || await this.findMessageInDBByData({_id:message._id, localReference:message.localReference })

    if (!found) {
      const wewMessage = this.simplePrepareMessage(message)
      this.messages.push(wewMessage)
      return  wewMessage
    } else {
      return null
    }
  }

  private calDateDuration(date = null) {
    this.duration = showDateDuration(date || this._updatedAt);
    this._updatedAt = date || this._updatedAt
  }

  private fix_updatedAt(message): ChatMessageInterface {
    if (message?.result) {
      message.result._updatedAt = message.result._updatedAt['$date']
    } else if(message?._updatedAt) {
      if(message._updatedAt.hasOwnProperty('$date')) {
        message._updatedAt = message._updatedAt['$date']
      }
    }
    return message
  }

  usernameToDisplayName(username) {

    try {
      const firstName = capitalizeTxt(username.split('.')[0])
      const lastName =  capitalizeTxt(username.split('.')[1])
      return firstName + ' ' + lastName
    } catch(error) {
      return username
    }

  }

  sendReadMessage() {
    this.RochetChatConnectorService.readMessage(this.id).catch((error) =>{
      console.error(error)
    })
    this.sendFalseTypingReadMessage('viewMessage', {})
    this.messageUnread = false
  }

}