/**
 * Internal: the React Context object backing `SessionProvider`.
 *
 * Lives in its own module so `EngineContext.tsx` can subscribe without
 * importing the full `SessionContext.tsx` (which would re-export the
 * EngineProvider via the same `@work` barrel and create a circular
 * dependency at module-init time).
 */

import { createContext } from "react";

import type { SessionId } from "@shared/ids";

import type { EventBus, SessionService } from "@engine/index";
import type { PdfByteStore } from "@source/index";

export interface SessionInternalContextValue {
  readonly service: SessionService;
  readonly bus: EventBus;
  readonly activeId: SessionId | null;
  readonly hydrated: boolean;
  getOrCreateByteStore(sessionId: SessionId): PdfByteStore;
  getSessionVersion(sessionId: SessionId): number;
  bumpSessionVersion(sessionId: SessionId): void;
}

export const SessionInternalContext = createContext<SessionInternalContextValue | null>(null);