Send and receive messages

Send and receive messages in community subchannels.

Send a message

Messages in community channels are sent to a specific subchannel. Use CommunitySubChannel with the community ID and subchannel ID.

TypeScript

import { CommunitySubChannel, SendTextMessageParams } from '@nexconn/chat';

const channel = new CommunitySubChannel('<communityId>', '<subChannelId>');

const params = new SendTextMessageParams({ text: 'Hello, subchannel!' });
const { code, data } = await channel.sendMessage(params);
if (code === 0) {
  console.log('Message sent:', data);
} else {
  console.log('Send failed. Code:', code);
}

Send a media message

TypeScript

import { CommunitySubChannel, Helper } from '@nexconn/chat';

const channel = new CommunitySubChannel('<communityId>', '<subChannelId>');

const result = await Helper.createSendImageMessageParams(file); // file: File object
if (result.isOk) {
  const params = result.data;
  params.onUploadProgress = (progress) => {
    console.log('Upload progress:', progress);
  };
  const { code, data } = await channel.sendMediaMessage(params);
  if (code === 0) {
    console.log('Media message sent:', data);
  }
}

Receive messages

All incoming messages (including community channel messages) arrive through the global message listener:

TypeScript

import { NCEngine, MessageHandler, Message } from '@nexconn/chat';

NCEngine.addMessageHandler('community-handler', new MessageHandler({
  onMessageReceived({ messages }): void {
    messages.forEach((msg) => {
      console.log('Received:', msg);
    });
  },
}));

tip

Filter messages by channelType to distinguish community channel messages from other channel types.