RocketChat/Rocket.Chat

import type { IRoom, IUser } from '@rocket.chat/core-typings';
import { useMutableCallback } from '@rocket.chat/fuselage-hooks';
import { useTranslation, usePermission, useUserRoom, useUserSubscription } from '@rocket.chat/ui-contexts';
import { useMemo } from 'react';

import { useEndpointAction } from '../../../../../hooks/useEndpointAction';
import { getRoomDirectives } from '../../../lib/getRoomDirectives';
import { useUserHasRoomRole } from '../../useUserHasRoomRole';
import type { UserInfoAction, UserInfoActionType } from '../useUserInfoActions';

export const useChangeLeaderAction = (user: Pick<IUser, '_id' | 'username'>, rid: IRoom['_id']): UserInfoAction | undefined => {
    const t = useTranslation();
    const room = useUserRoom(rid);
    const { _id: uid } = user;
    const userCanSetLeader = usePermission('set-leader', rid);
    const userSubscription = useUserSubscription(rid);

    if (!room) {
        throw Error('Room not provided');
    }

    const { roomCanSetLeader } = getRoomDirectives({ room, showingUserId: uid, userSubscription });
    const isLeader = useUserHasRoomRole(uid, rid, 'leader');

    const endpointPrefix = room.t === 'p' ? '/v1/groups' : '/v1/channels';
    const changeLeaderEndpoint = isLeader ? 'removeLeader' : 'addLeader';
    const changeLeaderMessage = isLeader ? 'removed__username__as__role_' : 'set__username__as__role_';
    const changeLeader = useEndpointAction('POST', `${endpointPrefix}.${changeLeaderEndpoint}`, {
        successMessage: t(changeLeaderMessage, { username: user.username, role: 'leader' }),
    });
    const changeLeaderAction = useMutableCallback(() => changeLeader({ roomId: rid, userId: uid }));
    const changeLeaderOption = useMemo(
        () =>
            roomCanSetLeader && userCanSetLeader
                ? {
                        content: t(isLeader ? 'Remove_as_leader' : 'Set_as_leader'),
                        icon: 'shield-alt' as const,
                        onClick: changeLeaderAction,
                        type: 'privileges' as UserInfoActionType,
                  }
                : undefined,
        [isLeader, roomCanSetLeader, t, userCanSetLeader, changeLeaderAction],
    );

    return changeLeaderOption;
};