import type { UserContent } from "ai";
import type { ChannelAdapter } from "#channel/adapter.js";
import { type CompiledChannel } from "#channel/compiled-channel.js";
import type { InferReceiveTarget } from "#channel/receive-target.js";
import type { Session } from "#channel/session.js";
import type { Runtime, SessionAuthContext } from "#channel/types.js";
import type { ResolvedChannelDefinition } from "#runtime/types.js";
/**
 * Options accepted by {@link CrossChannelReceiveFn}. Mirrors the input
 * argument of a channel's authored `receive(input, { send })` hook —
 * the runtime constructs `send` internally so route-handler callers
 * only supply the platform target, payload, and auth.
 */
export interface CrossChannelReceiveOptions<TTarget = Record<string, unknown>> {
    readonly message: string | UserContent;
    readonly target: TTarget;
    readonly auth: SessionAuthContext | null;
}
/**
 * Starts a session on a different channel from inside a route handler.
 * The target channel's authored `receive` hook owns continuation-token
 * format and initial state; `auth` is forwarded verbatim and becomes
 * `session.initiatorAuth`.
 */
export type CrossChannelReceiveFn = <TChannel>(channel: TChannel, options: CrossChannelReceiveOptions<InferReceiveTarget<TChannel>>) => Promise<Session>;
/**
 * Channel record consumed by the receiver — keeps the public-facing
 * `definition` reference so callers can identify a target by value
 * (the same module-default they imported in their route file).
 */
export interface CrossChannelTarget {
    readonly name: string;
    readonly definition: CompiledChannel;
    readonly receive?: CompiledChannel["receive"];
    readonly adapter?: ChannelAdapter;
}
/**
 * Projects an agent's resolved channels into the receiver-input shape.
 *
 * Framework-internal fetch-only channels carry no `definition` reference
 * and are filtered out at this boundary — only authored channels backed
 * by a `defineChannel` value can be receive targets.
 */
export declare function toCrossChannelTargets(channels: readonly ResolvedChannelDefinition[]): readonly CrossChannelTarget[];
/**
 * Builds the `args.receive` closure used by every route handler. The
 * closure resolves the target channel by reference identity against
 * the request-scoped channel bundle, then delegates to the target's
 * authored `receive` hook with a per-target `send` factory.
 */
export declare function createCrossChannelReceiveFn(runtime: Runtime, channels: readonly CrossChannelTarget[]): CrossChannelReceiveFn;
interface InvokeChannelReceiveInput {
    readonly runtime: Runtime;
    readonly target: Pick<CrossChannelTarget, "name" | "receive" | "adapter">;
    readonly input: {
        readonly message: string;
        readonly target: Readonly<Record<string, unknown>>;
        readonly auth: SessionAuthContext | null;
    };
    readonly describeMissingReceive: () => string;
    readonly describeMissingAdapter: () => string;
}
/**
 * Shared `receive(input, { send })` invocation used by both the route-
 * handler cross-channel surface and the schedule dispatcher. Owns the
 * receive/adapter precondition checks and the per-target `send`
 * factory so both call sites stay byte-identical.
 */
export declare function invokeChannelReceive(args: InvokeChannelReceiveInput): Promise<Session>;
export {};