import { IncomingReferRequest } from "../core/messages/methods/refer.js";
import { IncomingRegisterRequest } from "../core/messages/methods/register.js";
import { IncomingSubscribeRequest } from "../core/messages/methods/subscribe.js";
import { Invitation } from "./invitation.js";
import { Message } from "./message.js";
import { Notification } from "./notification.js";
import { Referral } from "./referral.js";
import { Subscription } from "./subscription.js";
/**
 * Delegate for {@link UserAgent}.
 * @public
 */
export interface UserAgentDelegate {
    /**
     * Called upon transport transitioning to connected state.
     */
    onConnect?(): void;
    /**
     * Called upon transport transitioning from connected state.
     * @param error - An error if disconnect triggered by transport. Otherwise undefined.
     */
    onDisconnect?(error?: Error): void;
    /**
     * Called upon receipt of an invitation.
     * @remarks
     * Handler for incoming out of dialog INVITE requests.
     * @param invitation - The invitation.
     */
    onInvite?(invitation: Invitation): void;
    /**
     * Called upon receipt of a message.
     * @remarks
     * Handler for incoming out of dialog MESSAGE requests.
     * @param message - The message.
     */
    onMessage?(message: Message): void;
    /**
     * Called upon receipt of a notification.
     * @remarks
     * Handler for incoming out of dialog NOTIFY requests.
     * @param notification - The notification.
     */
    onNotify?(notification: Notification): void;
    /**
     * @alpha
     * Called upon receipt of a referral.
     * @remarks
     * Handler for incoming out of dialog REFER requests.
     * @param referral - The referral.
     */
    onRefer?(referral: Referral): void;
    /**
     * @alpha
     * Called upon receipt of a registration.
     * @remarks
     * Handler for incoming out of dialog REGISTER requests.
     * @param registration - The registration.
     */
    onRegister?(registration: unknown): void;
    /**
     * @alpha
     * Called upon receipt of a subscription.
     * @remarks
     * Handler for incoming out of dialog SUBSCRIBE requests.
     * @param subscription - The subscription.
     */
    onSubscribe?(subscription: Subscription): void;
    /**
     * @internal
     * Called upon receipt of an out of dialog REFER. Used by test suite.
     * @param request - The request.
     */
    onReferRequest?(request: IncomingReferRequest): void;
    /**
     * @internal
     * Called upon receipt of a REGISTER request. Used by test suite.
     * @param request - The request.
     */
    onRegisterRequest?(request: IncomingRegisterRequest): void;
    /**
     * @internal
     * Called upon receipt of an out of dialog SUBSCRIBE request. Used by test suite.
     * @param request - The request.
     */
    onSubscribeRequest?(request: IncomingSubscribeRequest): void;
}