/**
 * Thinking content type for Convos.
 *
 * Agent → conversation "I'm thinking about this message" status. Mirrors
 * the existing FocusModeControl / TypingIndicator pattern: silent, no
 * fallback, JSON payload, filtered from chat history. Receivers route it
 * into a side-channel UI affordance ("Agent is thinking…").
 *
 * Wire shape:
 *   {
 *     "state": "start" | "stop",
 *     "targetMessageId": "<message id this thinking anchors to>",
 *     "content": "<3–5 word human-readable label>",
 *     "resultMessageId": "<optional: agent's reply that closed the thought>"
 *   }
 *
 * The `state` field follows the FocusModeControl pattern — `start` opens
 * a thinking session, `stop` closes it. Senders are expected to always
 * pair a `start` with a matching `stop` (same `targetMessageId`).
 *
 * `targetMessageId` and `content` are both required even on `stop`, so
 * receivers can disambiguate concurrent thinking sessions and render a
 * final label if they want.
 *
 * `resultMessageId` is optional and only meaningful on `stop` — when present,
 * it identifies the agent's own reply message that resolved the thinking.
 * Receivers can use it to link "thought about X" to "replied with Y" in the
 * UI. Omitted when the thinking ended without a reply (interrupt, error,
 * agent had nothing to say).
 */
import type { ContentTypeId, EncodedContent } from "@xmtp/node-bindings";
import type { ContentCodec } from "@xmtp/content-type-primitives";
import type { DecodedMessage } from "@xmtp/node-sdk";
export declare const ContentTypeThinking: ContentTypeId;
export type ThinkingState = "start" | "stop";
export interface Thinking {
    state: ThinkingState;
    targetMessageId: string;
    content: string;
    /** Optional — only meaningful on `stop`. The agent's reply that closed the thinking. */
    resultMessageId?: string;
}
export declare class ThinkingCodec implements ContentCodec<Thinking> {
    get contentType(): ContentTypeId;
    encode(content: Thinking): EncodedContent;
    decode(content: EncodedContent): Thinking;
    fallback(_content: Thinking): string | undefined;
    shouldPush(_content: Thinking): boolean;
}
export declare function isThinkingMessage(message: DecodedMessage): boolean;
export declare function getThinkingContent(message: DecodedMessage): Thinking | undefined;