import { CSN, LinkedModel } from "cds-internal-tool";
import { DataSource, DataSourceOptions } from "typeorm";
import { MySQLCredential } from "./types";
export declare function formatTenantDatabaseName(credentials: MySQLCredential, tenant_db_prefix?: string, tenant?: string): string;
export declare function getTenantDatabaseName(tenant?: string): string;
/**
 * get mysql credential for tenant
 *
 * @param tenant
 * @returns
 */
export declare function getMySQLCredential(tenant: string): import("mysql2").ConnectionOptions;
export declare function getDataSourceOption(tenant?: string): Promise<DataSourceOptions>;
export declare function csn4(tenant?: string): Promise<any>;
export declare function runWithAdminConnection<T = any>(runner: (ds: DataSource) => Promise<T>): Promise<T>;
/**
 * get raw CSN from linked model
 *
 * cannot be cached will cause stack overflow
 */
export declare const _rawCSN: (m: LinkedModel) => Promise<CSN>;
/**
 * check tenant database is existed or not
 *
 * @param tenant
 * @returns
 */
export declare function hasTenantDatabase(tenant?: string): Promise<boolean>;
/**
 * create a mysql 'database' for tenant
 *
 * @param tenant
 * @returns
 */
export declare function createDatabase(tenant: string): Promise<void>;
/**
 * drop database for tenant
 *
 * @param tenant
 */
export declare function dropDatabase(tenant: string): Promise<void>;
/**
 * sync tenant data model
 *
 * @param tenant
 * @param csn CSN, optional
 * @returns
 */
export declare function syncTenant(tenant: string, csn?: CSN): Promise<void>;
/**
 * deploy CSV (only) for tenant
 *
 * @param tenant
 */
export declare function deployCSV(tenant?: string, csvList?: Array<string>): Promise<void>;
/**
 * deploy (migrate) database model into target tenant database
 *
 * @param model plain CSN object
 * @param tenant tenant id
 * @returns
 */
export declare function deploy(model: CSN, tenant?: string): Promise<boolean>;
/**
 * get tenant 0 (admin tenant) name
 *
 * @returns
 */
export declare function getAdminTenantName(): string;
/**
 * get (lower case) tables of target tenant
 *
 * @param tenant
 * @returns
 */
export declare function getTables(tenant?: string): Promise<Array<string>>;
/**
 * get (lower case) columns of tables in target tenant
 *
 * @param table table name
 * @param tenant tenant id
 * @returns
 */
export declare function getColumns(table: string, tenant?: string): Promise<Array<string>>;
/**
 * deploy admin tenant if required
 *
 * @returns
 */
export declare function deployT0(): Promise<void>;