import 'reflect-metadata';
import { Context, HttpResponse } from './http';
import { OpenApiDecorator } from './openapi';
import { ServiceManager } from './service-manager';
/**
 * Interface of a function that can be returned in a hook function. This function is then
 * executed after the controller method execution.
 *
 * @export
 */
export type HookPostFunction = (response: HttpResponse) => void | Promise<void>;
/**
 * Interface of a function from which a hook can be created.
 *
 * @export
 */
export type HookFunction<C = Context> = (ctx: C, services: ServiceManager) => void | HttpResponse | HookPostFunction | Promise<void | HttpResponse | HookPostFunction>;
/**
 * Interface of a hook. It is actually the interface of a decorator.
 *
 * @export
 */
export type HookDecorator = (target: any, propertyKey?: string) => any;
/**
 * Create a hook from one or several functions.
 *
 * @export
 * @param {HookFunction[]} hookFunction - The function from which the hook should be created.
 * @returns {HookDecorator} - The hook decorator.
 */
export declare function Hook<C = Context>(hookFunction: HookFunction<C>, openApiDecorators?: OpenApiDecorator[], options?: {
    openapi?: boolean;
}): HookDecorator;
/**
 * Get the function from which the hook was made.
 *
 * @export
 * @param {HookDecorator} hook - The hook decorator.
 * @returns {HookFunction} The hook function.
 */
export declare function getHookFunction(hook: HookDecorator): HookFunction;
/**
 * Get the functions from which the hook was made.
 *
 * @export
 * @param {HookDecorator} hook - The hook decorator.
 * @returns {HookFunction[]} The hook functions.
 */
export declare function getHookFunctions(hook: HookDecorator): HookFunction[];
/**
 * Group multiple hooks into a new one.
 *
 * @export
 * @param {...HookDecorator[]} hookDecorators - The hooks to merge.
 * @returns {HookDecorator} The new hook.
 */
export declare function MergeHooks(...hookDecorators: HookDecorator[]): HookDecorator;