@amityco/ts-sdk-react-native/src/channelRepository/events/onChannelSetMuted.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 = Amity.Listener<Amity.StaticInternalChannel>;
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 onChannelSetMuted = (callback: Amity.Listener<Amity.StaticInternalChannel>) => {
  if (callbacks.length === 0) {
    const client = getActiveClient();

    const filter = async (payload: Amity.ChannelSetMutedPayload) => {
      upsertInCache(['channel', 'get', payload.channelId], {
        // If muteTimeout > now => user is muted
        // Otherwise => user is unmuted
        isMuted: Date.parse(payload.muteTimeout) > Date.now(),
      });

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

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

    mainDisposer = createEventSubscriber(client, 'onChannelMute', 'channel.setMuted', filter);
  }

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