import { Long } from 'bson';
import { ChannelUser } from '../user';
/**
 * Update channel data
 */
export interface ChannelDataUpdater<T, U> {
    /**
     * Update channel info
     *
     * @param info
     */
    updateInfo(info: Partial<T>): void;
    /**
     * Set channel info
     */
    setInfo(info: T): void;
    /**
     * Update or add user info
     *
     * @param user
     */
    updateUserInfo(user: ChannelUser, info: Partial<U>): void;
    /**
     * Remove user
     * @param user
     */
    removeUser(user: ChannelUser): boolean;
    /**
     * Clear all user info
     */
    clearUserList(): void;
    /**
     * Update watermark
     *
     * @param readerId
     */
    updateWatermark(readerId: Long, watermark?: Long): void;
    /**
     * Clear all watermark
     */
    clearWatermark(): void;
}