/**
 * Slack `block_actions` + `view_submission` wire handling.
 *
 * The route handler reads the form-encoded body, hands it here, and we:
 *
 * 1. Decode `block_actions` payloads into a typed shape the channel can
 *    work with — actions, channel/thread metadata, the clicker, and the
 *    full original block list for answered-card updates.
 * 2. Open the freeform-answer modal inline when the click was a "Type
 *    your answer" button (Slack's `trigger_id` is only valid for ~3s,
 *    so this can't run under `waitUntil`).
 * 3. Resolve `view_submission` payloads (freeform modal submissions)
 *    back into parked HITL requests via `send`.
 *
 * Anything we don't consume flows through to the user-supplied
 * `onInteraction` callback. Always returns `Response("ok")` — followup
 * work runs under `waitUntil` so the webhook ACK is immediate.
 */
import { type SlackBlockActionsPayload } from "#compiled/@chat-adapter/slack/webhook.js";
import type { SlackChannelConfig, SlackChannelState, SlackInteractionAction } from "#public/channels/slack/slackChannel.js";
import type { CancelFn, SendFn } from "#public/definitions/channel.js";
/**
 * Decoded view of a Slack `block_actions` payload. Returned by
 * {@link parseBlockActionsPayload} and read by the handler.
 */
interface ParsedBlockActionsPayload {
    readonly actions: SlackInteractionAction[];
    readonly channelId: string;
    readonly threadTs: string;
    readonly teamId: string | undefined;
    /**
     * The full block list off the clicked message. Preserved on the
     * answered-card update so the original prompt stays visible after the
     * interactive controls are stripped.
     */
    readonly messageBlocks: readonly unknown[];
}
/**
 * Decodes a Slack `block_actions` payload into a {@link ParsedBlockActionsPayload}.
 * Returns `null` for payloads that don't carry the channel/thread
 * metadata the handler needs.
 */
export declare function parseBlockActionsPayload(body: Record<string, unknown> | SlackBlockActionsPayload): ParsedBlockActionsPayload | null;
/**
 * Channel-supplied dependencies for {@link handleInteractionPost}.
 *
 * Carries the bits the handler needs that come from channel
 * construction: credentials for outbound API calls and the user's
 * `onInteraction` callback for non-HITL clicks.
 */
export interface InteractionHandlerDeps {
    readonly config: SlackChannelConfig;
}
/**
 * Entry point for Slack's form-encoded interactivity endpoint. Routes
 * `view_submission` payloads to the freeform-answer flow, intercepts
 * "Type your answer" button clicks to open a modal, resolves
 * framework HITL clicks against the parked session, and forwards
 * anything else to `config.onInteraction`.
 */
export declare function handleInteractionPost(rawBody: string, ctx: {
    cancel: CancelFn;
    send: SendFn<SlackChannelState>;
    waitUntil: (task: Promise<unknown>) => void;
}, deps: InteractionHandlerDeps): Promise<Response>;
export type { ParsedBlockActionsPayload };