/**
 * Minimal hand-rolled Bot Framework activity types and their normalization
 * into the channels core's {@link ChannelMessage} (spec §7.1.2). No botbuilder:
 * only the fields the adapter actually reads are typed.
 */
import type { IdentityPort } from "../../src/ports.js";
import type { ChannelActor, ChannelMessage, ConversationKey } from "../../src/types.js";
/** A Bot Framework activity, reduced to the fields the Teams adapter consumes. */
export type TeamsActivity = {
    /** "message", "messageReaction", "conversationUpdate", … */
    type: string;
    id: string;
    timestamp?: string;
    serviceUrl: string;
    /** Always "msteams" for Teams traffic. */
    channelId: string;
    from: {
        id: string;
        name?: string;
        aadObjectId?: string;
    };
    conversation: {
        id: string;
        tenantId?: string;
        conversationType?: string;
    };
    /** The bot the activity was addressed to. */
    recipient: {
        id: string;
        name?: string;
    };
    text?: string;
    entities?: Array<{
        type: string;
        mentioned?: {
            id: string;
            name?: string;
        };
        text?: string;
    }>;
    replyToId?: string;
    /** Action.Submit payload, e.g. `{ option }` from a question card. */
    value?: unknown;
    channelData?: {
        tenant?: {
            id: string;
        };
    };
};
/**
 * `"19:x@thread;messageid=123"` → key `msteams:19:x@thread/123`; no messageid →
 * channel-level key.
 */
export declare function conversationKeyFromActivity(a: TeamsActivity): ConversationKey;
/** Teams tenant id — `conversation.tenantId` with the channelData fallback. */
export declare function tenantIdOfActivity(a: TeamsActivity): string | undefined;
/** The sending user as a {@link ChannelActor} (AAD object id preferred as externalId). */
export declare function actorOfActivity(a: TeamsActivity): ChannelActor;
/**
 * Normalizes a message activity into a ChannelMessage (spec §7.1.2):
 * payload { type:"prompt", prompt: textWithMentionTokensStripped },
 * meta.channel { platform:"msteams", conversationKey, eventId: a.id, tenantId,
 * actor, messageRef }, meta.mentions via normalize (bot recipient id ⇒ isBot
 * entity). A text-less Action.Submit (question-card answer) uses its `option`
 * as the prompt. Returns null for non-message activities and for the bot's own
 * messages (a.from.id === a.recipient.id — the adapter-level loop filter,
 * spec §8).
 */
export declare function activityToChannelMessage(a: TeamsActivity, identity: IdentityPort): Promise<ChannelMessage | null>;
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