import { DataSource } from "../storage.mjs";
import { TenantCtx } from "@gscdump/contracts";
interface EmptyTypesDoc {
  version: 1;
  /** SearchType strings detected as empty for this (user, site). */
  emptyTypes: string[];
  /** When each type was last marked empty (unix ms). Helps debug stale skips. */
  markedAt: Record<string, number>;
}
interface EmptyTypesStore {
  load: (ctx: TenantCtx) => Promise<EmptyTypesDoc>;
  /** Add types to the empty set, preserving existing markers. No-op if all already present. */
  mark: (ctx: TenantCtx, types: readonly string[], now?: number) => Promise<EmptyTypesDoc>;
  /** Remove types from the empty set. Returns the updated doc. */
  clear: (ctx: TenantCtx, types: readonly string[]) => Promise<EmptyTypesDoc>;
}
interface CreateEmptyTypesStoreOptions {
  dataSource: DataSource;
  now?: () => number;
}
declare function createEmptyTypesStore(opts: CreateEmptyTypesStoreOptions): EmptyTypesStore;
export { CreateEmptyTypesStoreOptions, EmptyTypesDoc, EmptyTypesStore, createEmptyTypesStore };