/// <reference types="koa__cors" />
import Cors from "@koa/cors";
import { ActionResult, Application, BodyParserOption, Class, Configuration, Facility, Invocation, KoaMiddleware, Middleware, PlumierApplication, PlumierConfiguration, RouteInfo } from "@plumjs/core";
import Koa, { Context } from "koa";
import { FileActionResult, ServeStaticOptions } from "./serve-static";
export interface RouteContext extends Koa.Context {
    route: Readonly<RouteInfo>;
    parameters: any[];
}
export declare class RedirectActionResult extends ActionResult {
    path: string;
    constructor(path: string);
    execute(ctx: Context): Promise<void>;
}
export declare namespace response {
    function json(body: any): ActionResult;
    function file(path: string, opt?: ServeStaticOptions): FileActionResult;
    function redirect(path: string): RedirectActionResult;
}
export declare function extractDecorators(route: RouteInfo): Middleware[];
export declare class MiddlewareInvocation implements Invocation {
    private middleware;
    context: Context;
    private next;
    constructor(middleware: Middleware, context: Context, next: Invocation);
    proceed(): Promise<ActionResult>;
}
export declare class ActionInvocation implements Invocation {
    context: RouteContext;
    constructor(context: RouteContext);
    proceed(): Promise<ActionResult>;
}
export declare function pipe(middleware: Middleware[], context: Context, invocation: Invocation): Invocation;
/**
 * Preset configuration for building web api. This facility contains:
 *
 * body parser: koa-bodyparser
 *
 * cors: @koa/cors
 */
export declare class WebApiFacility implements Facility {
    private opt?;
    constructor(opt?: {
        controller?: string | Class | Class[] | undefined;
        bodyParser?: BodyParserOption | undefined;
        cors?: Cors.Options | undefined;
    } | undefined);
    setup(app: Readonly<PlumierApplication>): Promise<void>;
}
/**
 * Preset configuration for building restful style api. This facility contains:
 *
 * body parser: koa-bodyparser
 *
 * cors: @koa/cors
 *
 * default response status: { get: 200, post: 201, put: 204, delete: 204 }
 */
export declare class RestfulApiFacility extends WebApiFacility {
    setup(app: Readonly<PlumierApplication>): Promise<void>;
}
export declare class Plumier implements PlumierApplication {
    readonly config: Readonly<PlumierConfiguration>;
    readonly koa: Koa;
    private globalMiddleware;
    constructor();
    use(option: KoaMiddleware): Application;
    use(option: Middleware): Application;
    set(facility: Facility): Application;
    set(config: Partial<Configuration>): Application;
    private createRoutes;
    initialize(): Promise<Koa>;
}