import { AsyncLocalStorage } from "async_hooks";
import { type Knex } from "knex";
import { type SonamuConfig } from "../api/config";
import { type EnvironmentSnapshots, type SonamuEnvironment } from "../env";
import { TransactionContext } from "./transaction-context";
export type SonamuMainDBPreset = "test" | "fixture" | SonamuEnvironment;
export type SonamuReadonlyDBPreset = "test_readonly" | "development_readonly" | "staging_readonly" | "production_readonly";
export type SonamuDBPreset = SonamuMainDBPreset | SonamuReadonlyDBPreset;
export type DBPreset = "w" | "r" | SonamuDBPreset;
export type SonamuDBConfig = Record<SonamuDBPreset, Knex.Config>;
export declare class DBClass {
    private wdb?;
    private rdb?;
    private presetDBs;
    private workerDBs;
    private currentConfig;
    transactionStorage: AsyncLocalStorage<TransactionContext>;
    runWithTransaction<T>(callback: () => Promise<T>): Promise<T>;
    setConfig(dbConfig: SonamuDBConfig): void;
    private getCurrentConfig;
    getTransactionContext(): TransactionContext;
    getDB(which: DBPreset): Knex;
    private getWorkerDB;
    getDBConfig(which: DBPreset): Knex.Config;
    destroy(): Promise<void>;
    generateDBConfig(config: SonamuConfig["database"], projectName?: string, snapshots?: EnvironmentSnapshots): SonamuDBConfig;
    testTransaction: Knex.Transaction | null;
    createTestTransaction(): Promise<Knex.Transaction>;
    clearTestTransaction(): Promise<void>;
    getTestConnection(): Promise<Knex>;
}
export declare const DB: DBClass;
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