import type { NativeEventEmitter } from 'react-native';
import type { ChatContactEventListener } from './ChatEvents';
import { BaseManager } from './__internal__/Base';
/**
 * The contact manager class, which manages chat contacts such as adding, deleting, retrieving, and modifying contacts.
 */
export declare class ChatContactManager extends BaseManager {
    protected static TAG: string;
    constructor();
    private _contactListeners;
    private _contactSubscriptions;
    setNativeListener(event: NativeEventEmitter): void;
    private invokeContactListener;
    /**
     * Add contact listener
     *
     * @param listener The listener to be added.
     */
    addContactListener(listener: ChatContactEventListener): void;
    /**
     * Remove contact listener
     *
     * @param listener The listener to be deleted.
     */
    removeContactListener(listener: ChatContactEventListener): void;
    /**
     * Clear contact listener
     */
    removeAllContactListener(): void;
    /**
     * Adds a new contact.
     *
     * @param username The user to be added.
     * @param reason (optional) The invitation message.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    addContact(username: string, reason?: string): Promise<void>;
    /**
     * Deletes a contact and all the related conversations.
     *
     * @param username The contact to be deleted.
     * @param keepConversation Whether to retain conversations of the deleted contact.
     * - `true`: Yes.
     * - `false`: (default) No.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    deleteContact(username: string, keepConversation?: boolean): Promise<void>;
    /**
     * Gets all the contacts from the server.
     *
     * @returns The list of contacts.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    getAllContactsFromServer(): Promise<Array<string>>;
    /**
     * Gets the contact list from the local database.
     *
     * @returns The contact list.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    getAllContactsFromDB(): Promise<Array<string>>;
    /**
     * Adds a user to the block list.
     * You can send messages to the users on the block list, but cannot receive messages from them.
     *
     * @param username The user to be added to the block list.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    addUserToBlockList(username: string): Promise<void>;
    /**
     * Removes the contact from the block list.
     *
     * @param username The contact to be removed from the block list.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    removeUserFromBlockList(username: string): Promise<void>;
    /**
     * Gets the block list from the server.
     *
     * @returns The block list obtained from the server.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    getBlockListFromServer(): Promise<Array<string>>;
    /**
     * Gets the block list from the local database.
     *
     * @returns The block list obtained from the local database.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    getBlockListFromDB(): Promise<Array<string>>;
    /**
     * Accepts a friend invitation。
     *
     * @param username The user who sends the friend invitation.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    acceptInvitation(username: string): Promise<void>;
    /**
     * Declines a friend invitation.
     *
     * @param username The user who sends the friend invitation.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    declineInvitation(username: string): Promise<void>;
    /**
     * Gets the unique IDs of the current user on the other devices. The ID is in the format of username + "/" + resource.
     *
     * @returns The list of unique IDs of users on the other devices if the method succeeds.
     *
     * @throws A description of the exception. See {@link ChatError}.
     */
    getSelfIdsOnOtherPlatform(): Promise<Array<string>>;
}