@amityco/ts-sdk-react-native/src/utils/linkedObject/channelLinkedObject.ts

Amity Social Cloud Typescript SDK

import { markAsRead } from '~/channelRepository/internalApi/markAsRead';
import { shallowClone } from '../shallowClone';
import { queryCache } from '~/cache/api';
import { channelMemberLinkedObject } from './channelMemberLinkedObject';
import { getMyMembership } from '~/channelRepository/observers/getMyMembership';

export const channelLinkedObject = (channel: Amity.InternalChannel): Amity.Channel => {
  let previewMembers: Amity.Membership<'channel'>[] = [];

  if (['conversation', 'community'].includes(channel.type)) {
    const channelUsers = queryCache<Amity.Membership<'channel'>>(['channelUsers', 'get']);
    if (channelUsers && channelUsers?.length > 0) {
      previewMembers = (
        channelUsers?.filter(
          ({ data }) => data.channelId === channel.channelId && data.membership !== 'none',
        ) ?? []
      )
        // sort in ascending order by userInternalId
        .sort((a, b) => a.data.userInternalId.localeCompare(b.data.userInternalId))
        // Select only first 4 members
        .slice(0, 4)
        .map(({ data }) => channelMemberLinkedObject(data));
    }
  }

  return shallowClone(channel, {
    markAsRead: () => markAsRead(channel.channelInternalId),
    previewMembers,
    myMembership: (callback: Amity.LiveObjectCallback<Amity.Membership<'channel'> | undefined>) =>
      getMyMembership(channel.channelId, callback),
  });
};