/** Validates observed User_Input rows and prepares accepted entity changes. */
import type { ObservedExistingRowChange } from "../../../../contracts/domain/model/types.js";
import type { SyncSheetsSnapshot, SyncObservedSnapshot, SyncSnapshotRow } from "../../../../contracts/sheets/syncSheets.js";
import type { TypedSheetsEntityFieldMapping, TypedSheetsEntityMapping } from "../../../../contracts/sync-orm/mapping/contracts.js";
import type { MappedUserInputInvalidReason } from "../../../../contracts/sheets/userInputPolling.js";
import { type EntityStateRecord, type MappedPollingState, type RowBindingStateRecord } from "./MikroOrmUserInputPollingState.js";
export { MAPPED_USER_INPUT_INVALID_REASONS, validateSnapshotCell, } from "../../../../contracts/sheets/userInputPolling.js";
export type { MappedUserInputInvalidReason } from "../../../../contracts/sheets/userInputPolling.js";
export interface PreparedRow {
    readonly mapping: TypedSheetsEntityMapping;
    readonly snapshot: SyncSheetsSnapshot;
    readonly snapshotHash: string;
    readonly snapshotRow: SyncSnapshotRow;
    readonly binding: RowBindingStateRecord;
    readonly canonical: EntityStateRecord;
    readonly row: ObservedExistingRowChange;
}
export interface InvalidRow {
    readonly mapping: TypedSheetsEntityMapping;
    readonly snapshot: SyncSheetsSnapshot;
    readonly snapshotRow: SyncSnapshotRow;
    readonly rowNumber: number;
    readonly reason: MappedUserInputInvalidReason;
}
export interface SheetAccumulator {
    readonly mapping: TypedSheetsEntityMapping;
    rowsScanned: number;
    changedRows: number;
    appliedRows: number;
    conflictRows: number;
    quarantinedRows: number;
    duplicateRows: number;
    staleRows: number;
    fencedRows: number;
    invalidRows: number;
    unknownBusinessKeyRows: number;
    duplicateBusinessKeyRows: number;
}
/** Inspects one projection snapshot and appends changed rows to the batch. */
export declare function inspectSnapshot(mapping: TypedSheetsEntityMapping, observed: SyncObservedSnapshot, state: MappedPollingState, accumulator: SheetAccumulator, preparedRows: PreparedRow[]): readonly InvalidRow[];
/** Derives duplicate business-key values from one normalized snapshot. */
export declare function duplicateBusinessKeysForSnapshot(snapshot: SyncSheetsSnapshot, businessKey: TypedSheetsEntityFieldMapping): ReadonlySet<string>;
/** Computes the stable snapshot identity used by observation deduplication. */
export declare function snapshotHash(snapshot: SyncSheetsSnapshot): string;
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