import { PiHostUiRequest, PiHostUiResponse } from "../types.js";
import { ExtensionUIContext } from "@earendil-works/pi-coding-agent";
//#region src/node/extensionUi.d.ts
/** Thrown by `custom()` — the one host-UI method with no headless degradation
 * (it renders an arbitrary interactive TUI component). This gives extensions a
 * typed unsupported issue they can catch rather than hanging. */
export declare class PiUnsupportedHostUiError extends Error {
  readonly method: string;
  constructor(method: string);
}
export interface SupervisorUiBridgeDeps {
  /** Allocate a fresh, per-thread-unique request id. */
  nextRequestId: () => string;
  /** Single-tool causality: the executing tool's id iff exactly one tool is
   * running, else undefined. The bridge stamps it verbatim and never infers. */
  currentToolCallId: () => string | undefined;
  /** Emit a blocking request to subscribers (→ `extension_ui_request`). */
  emitRequest: (request: PiHostUiRequest) => void;
  /** Emit resolution to subscribers (→ `extension_ui_resolved`). */
  emitResolved: (requestId: string) => void;
  /** Optional sink for non-blocking `notify` messages. */
  onNotify?: (message: string, type: "info" | "warning" | "error") => void;
}
export interface SupervisorUiBridge {
  /** The `ExtensionUIContext` to bind via `session.bindExtensions`. */
  readonly ui: ExtensionUIContext;
  /** Currently-pending blocking requests (survive reconnect — tracked here, not
   * on any client connection). Oldest first. */
  pending: () => PiHostUiRequest[];
  /** Resolve a pending request from a client response. Returns false if the id
   * is unknown (already resolved or never existed). */
  resolve: (response: PiHostUiResponse) => boolean;
  /** Settle every pending request as dismissed (e.g. on session teardown). */
  dismissAll: () => void;
}
export declare const createSupervisorUiBridge: (deps: SupervisorUiBridgeDeps) => SupervisorUiBridge;
//#endregion
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