import type { ResolvedChxConfig } from '@chkit/core';
import type { BackfillEnvironment, BackfillPathSet, BackfillPlanState, BackfillRunState, BackfillStatusSummary, ReadPlanOutput } from './types.js';
export declare function hashId(input: string): string;
export declare function nowIso(): string;
export declare function randomPlanId(): string;
export declare function computeEnvironmentFingerprint(clickhouse: {
    url: string;
    database?: string;
} | undefined): BackfillEnvironment | undefined;
export declare function ensureEnvironmentMatch(input: {
    plan: BackfillPlanState;
    clickhouse: {
        url: string;
        database?: string;
    } | undefined;
    forceEnvironment: boolean;
}): void;
export declare function computeBackfillStateDir(config: Pick<ResolvedChxConfig, 'metaDir'>, configPath: string, stateDir?: string): string;
export declare function backfillPaths(stateDir: string, planId: string): BackfillPathSet;
export declare function writeJson(filePath: string, value: unknown): Promise<void>;
export declare function readPlan(input: {
    planId: string;
    configPath: string;
    config: Pick<ResolvedChxConfig, 'metaDir'>;
    stateDir?: string;
}): Promise<ReadPlanOutput>;
export declare function readRun(runPath: string): Promise<BackfillRunState | null>;
export declare function listPlanIds(plansDir: string): Promise<string[]>;
export declare function summarizeRunStatus(run: BackfillRunState, runPath: string, plan: BackfillPlanState): BackfillStatusSummary;
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