import type { HumanDecisionChannelRequest, HumanDecisionResponse } from "../workflows/types.js";
export declare const CHANNEL_ADAPTER_PROTOCOL_SCHEMA: "pi-workflows.channel-adapter.v1";
export type TelegramMessageReference = {
    chatId: string;
    messageId: string;
    recipientIndex: number;
    partIndex: number;
    contentDigest: string;
};
type ChannelAdapterMessageBase = {
    schema: typeof CHANNEL_ADAPTER_PROTOCOL_SCHEMA;
    adapterEpoch: string;
    profile: string;
    sequence: number;
    expectedRevision: number;
    stableMessageId: string;
};
export type ChannelAdapterMessage = (ChannelAdapterMessageBase & {
    kind: "channel.ready";
    cursor: number;
}) | (ChannelAdapterMessageBase & {
    kind: "channel.present";
    decisionId: string;
    requestDigest: string;
    attemptId: string;
    state: "confirmed" | "failed" | "unknown";
    messages: TelegramMessageReference[];
    errorCode?: string;
}) | (ChannelAdapterMessageBase & {
    kind: "channel.answer";
    decisionId: string;
    requestDigest: string;
    response: HumanDecisionResponse;
    actorId: string;
    chatId: string;
    eventId: string;
    idempotencyKey: string;
    cursor: number;
}) | (ChannelAdapterMessageBase & {
    kind: "channel.settle";
    decisionId: string;
    requestDigest: string;
    attemptId: string;
    state: "confirmed" | "failed" | "unknown";
    errorCode?: string;
}) | (ChannelAdapterMessageBase & {
    kind: "channel.exiting";
    cursor: number;
});
export type ChannelAdapterCommand = {
    kind: "channel.present";
    stableMessageId: string;
    attemptId: string;
    request: HumanDecisionChannelRequest;
} | {
    kind: "channel.settle";
    stableMessageId: string;
    attemptId: string;
    request: HumanDecisionChannelRequest;
    outcome: "accepted" | "cancelled" | "expired";
    response?: HumanDecisionResponse;
    messages: TelegramMessageReference[];
} | {
    kind: "channel.poll";
    cursor: number;
    requests: HumanDecisionChannelRequest[];
} | {
    kind: "channel.stop";
};
export type ChannelAdapterResponse = {
    schema: typeof CHANNEL_ADAPTER_PROTOCOL_SCHEMA;
    type: "response";
    sequence: number;
    outcome: "accepted" | "rejected";
    revision: number;
    command: ChannelAdapterCommand | null;
    error?: string;
};
export type ChannelAdapterLaunch = {
    schema: "pi-workflows.channel-adapter-launch.v1";
    adapterEpoch: string;
    profile: string;
    token: string;
    allowedUserIds: string[];
    allowedChatIds: string[];
    apiBase?: string;
};
export declare function encodeChannelLine(value: ChannelAdapterMessage | ChannelAdapterResponse): Buffer;
export declare function parseChannelAdapterMessage(frame: Buffer): ChannelAdapterMessage;
export declare function parseChannelAdapterResponse(frame: Buffer): ChannelAdapterResponse;
export declare function parseChannelAdapterLaunch(value: unknown): ChannelAdapterLaunch;
export declare function channelResponse(message: ChannelAdapterMessage, outcome: ChannelAdapterResponse["outcome"], revision: number, command: ChannelAdapterCommand | null, error?: string): ChannelAdapterResponse;
export declare function channelStableMessageId(parts: readonly string[]): string;
export {};