import { Row as Row$1 } from "../storage.mjs";
import "../contracts.mjs";
import { RollupEngine } from "./core.mjs";
import { TenantCtx } from "@gscdump/contracts";
import { SearchType } from "gscdump/query";
/**
 * Aggregate one day's `hourly_pages` partition into the daily `pages` shape
 * and write it to the daily Discover partition. After this runs for date D,
 * the daily query path serves D from `pages/.../daily/D` and the `hourly/D`
 * partition becomes read-only / GC-only.
 *
 * `(position - 1)` weighting matches the storage convention encoded by
 * `toSumPosition`: `sum_position = SUM((position - 1) * impressions)`, so a
 * downstream `SUM(sum_position) / SUM(impressions) + 1` recovers the mean.
 *
 * searchType-scoped: only call with `searchType: 'discover'`. The hourly
 * partition lives under `hourly_pages` and the output lands under `pages` so
 * existing dashboard queries (which read `pages`) see the rolled-up day
 * transparently.
 */
interface RebuildDailyFromHourlyOptions {
  engine: RollupEngine & {
    writeDay: (scope: TenantCtx & {
      table: TableTypeName;
      date: string;
      searchType?: SearchType;
    }, rows: Row$1[]) => Promise<void>;
  };
  ctx: TenantCtx;
  /** PT calendar day to roll up. */
  date: string;
  searchType: 'discover';
}
type TableTypeName = import('@gscdump/contracts').TableName;
declare function rebuildDailyFromHourly(opts: RebuildDailyFromHourlyOptions): Promise<{
  rowsWritten: number;
}>;
export { RebuildDailyFromHourlyOptions, rebuildDailyFromHourly };