import { ActivityParams, AgenticIdentity, ConversationReference, DeprecatedInputActivity, SentActivity } from '@microsoft/teams.api';
import { IStreamer } from '../streamer';
/**
 * Options for low-level activity sender operations.
 */
export type ActivitySenderOptions = {
    /**
     * Agentic identity scope to use when acquiring tokens for this send.
     */
    readonly agenticIdentity?: AgenticIdentity;
    /**
     * The id of the message at the root of a reply chain (thread).
     * When set on a new activity, it is sent as a reply in that thread, within the chat or channel the activity is sent to.
     * The destination is taken from `ref.conversation.id`, not from the activity's `channelData`, so it must be the chat or channel id (`channelData.chat.id` or `channelData.channel.id`).
     * Ignored when the activity updates an existing message.
     *
     * @experimental This API is in preview and may change in the future. Diagnostic: ExperimentalTeamsThreading
     */
    readonly replyChainId?: string;
};
/**
 * Options for creating a stream.
 *
 * @experimental This API is in preview and may change in the future. Diagnostic: ExperimentalTeamsThreading
 */
export type StreamOptions = {
    /**
     * Places the stream in a reply chain (thread).
     * `chatOrChannelId` is the chat or channel id (`channelData.chat.id` or `channelData.channel.id`) and `replyChainId` is the id of the message at the root of the reply chain (`channelData.replyChain.id`).
     */
    readonly replyChain?: {
        /**
         * The id of the chat or channel the reply chain is in: `channelData.chat.id` or `channelData.channel.id`.
         */
        readonly chatOrChannelId: string;
        /**
         * The id of the message at the root of the reply chain: `channelData.replyChain.id`.
         */
        readonly replyChainId: string;
    };
};
/**
 * Interface for activity sending (NOT a plugin)
 * Separates sending concerns from transport concerns
 */
export interface IActivitySender {
    /**
     * Send an activity
     * @deprecated Use MessageActivityInput or TypingActivityInput instead.
     */
    send(activity: DeprecatedInputActivity, ref: ConversationReference, options?: ActivitySenderOptions): Promise<SentActivity>;
    /**
     * Send an activity
     */
    send(activity: ActivityParams, ref: ConversationReference, options?: ActivitySenderOptions): Promise<SentActivity>;
    send(activity: ActivityParams | DeprecatedInputActivity, ref: ConversationReference, options?: ActivitySenderOptions): Promise<SentActivity>;
    /**
     * Create a new activity stream
     */
    createStream(ref: ConversationReference, options?: StreamOptions): IStreamer;
}