@amityco/ts-sdk-react-native/src/channelRepository/events/onChannelSetUserMuted.ts

Amity Social Cloud Typescript SDK

import { getActiveClient } from '~/client/api/activeClient';
import { createEventSubscriber } from '~/core/events';

import { pullFromCache, upsertInCache } from '~/cache/api';

type CallbackFn = (
  channel: Amity.StaticInternalChannel,
  member: Amity.Membership<'channel'>,
) => void;
const callbacks: CallbackFn[] = [];
let mainDisposer: (() => void) | null = null;

const dispose = (cb: CallbackFn) => {
  const index = callbacks.indexOf(cb);
  if (index > -1) {
    callbacks.splice(index, 1);
  }
  if (callbacks.length === 0) {
    mainDisposer?.();
  }
};

export const onChannelSetUserMuted = (
  callback: (channel: Amity.StaticInternalChannel, member: Amity.Membership<'channel'>) => void,
): Amity.Unsubscriber => {
  if (callbacks.length === 0) {
    const client = getActiveClient();

    const filter = async (payload: Amity.ChannelSetUserMutedPayload) => {
      payload.userIds.forEach(userId =>
        // If muteTimeout > now => user is muted
        // Otherwise => user is unmuted
        upsertInCache(['channelUsers', 'get', `${payload.channelId}#${userId}`], {
          isMuted: Date.parse(payload.muteTimeout) > Date.now(),
        }),
      );

      const channel = pullFromCache<Amity.StaticInternalChannel>([
        'channel',
        'get',
        payload.channelId,
      ])?.data;

      const channelUser = pullFromCache<Amity.Membership<'channel'>>([
        'channelUsers',
        'get',
        `${payload.channelId}#${payload.userIds[0]}`,
      ])?.data;

      if (channel && channelUser) {
        callbacks.forEach(cb => cb(channel, channelUser));
      }
    };

    mainDisposer = createEventSubscriber(
      client,
      'onChannelUserMute',
      'channel.setMutedUsers',
      filter,
    );
  }

  callbacks.push(callback);
  return () => dispose(callback);
};