import * as express from "express";
import App from "./app";
import { FileOptions } from "./file.response";
import RenderResponse from "./render.response";
import RedirectResponse from "./redirect.response";
import SkipResponse from "./skip.response";
import UnauthorizedResponse from "./unauthorized.response";
import FileResponse from "./file.response";
import Request from "./request";
import { LynxControllerMetadata } from "./decorators";
import Media from "./entities/media.entity";
import StatusError from "./status-error";
import Logger from "./logger";
export declare enum FlashType {
    primary = 0,
    secondary = 1,
    success = 2,
    danger = 3,
    warning = 4,
    info = 5,
    light = 6,
    dark = 7
}
export interface FlashMessage {
    type: FlashType;
    message: string;
}
/**
 * This class defines the basic class for any controllers. It implements a lot
 * of utility methods in order to correctly generate any response.
 */
export declare class BaseController {
    app: App;
    private _metadata;
    logger: Logger;
    readonly metadata: LynxControllerMetadata;
    constructor(app: App);
    /**
     * This method is called only when the constructed has been completed.
     * Since this method is async, it can be used to perform some initialization
     * that needed the use of the await keyword.  */
    postConstructor(): Promise<void>;
    /**
     * Add a value to the current request context.
     * Any variable added with this method will available in the template context
     * thought the @method render method.
     * @param req the current Request
     * @param key the key of the value to add
     * @param value the value to add
     */
    addToContext(req: Request, key: string, value: any): void;
    /**
     * Utility method to generate an error with a status code.
     * This method should be used instead of the usual throw new Error(msg).
     * In this way, a proper HTTP status code can be used (for example, 404 or 500),
     * instead of the default 400.
     * @param status the http status code to return
     * @param message the error message
     * @return a new @type StatusError object
     */
    error(status: number, message: string): StatusError;
    /**
     * This method generate an url to a route starting from the route name and
     * optionally its parameters.
     * If a parameter not is used to generate the route url, it will be appended
     * as a query parameter.
     * @param name the name of the route
     * @param parameters a plain object containing the paramters for the route.
     */
    route(name: string, parameters?: any): string;
    /**
     * Generate a web page starting from a template and using a generated context.
     * @param view the name of the view
     * @param req the request object
     * @param context a plain object containing any necessary data needed by the view
     */
    render(view: string, req: Request, context?: any): RenderResponse;
    /**
     * Redirect the current route to another
     * @param routeName the new of the target route
     * @param routeParams a plain object containing the paramters for the route.
     */
    redirect(routeName: string, routeParams?: any): RedirectResponse;
    /**
     * Add a flash message in the current request.
     * @param msg the FlashMessage to be included
     * @param req the request
     */
    addFlashMessage(msg: FlashMessage, req: Request): void;
    /**
     * Add a success flash message in the current request.
     * @param msg the string (can be localized) of the message
     * @param req the request
     */
    addSuccessMessagge(msg: string, req: Request): void;
    /**
     * Add an error flash message in the current request.
     * @param msg the string (can be localized) of the message
     * @param req the request
     */
    addErrorMessage(msg: string, req: Request): void;
    /**
     * Generate a response suitable to file download. This method can also be
     * used to generate images of specific dimensions.
     * @param path the string path of the file, or a Media object to be downloaded
     * @param options options to correctly generate the output file
     */
    download(path: string | Media, options?: FileOptions): FileResponse;
    /**
     * Generate an unauthorized response.
     */
    unauthorized(): UnauthorizedResponse;
    /**
     * Generate a skip resopnse. In this particuar case, the original Express `next()`
     * will be executed, causing the controller chain to continue its execution.
     */
    next(): SkipResponse;
    /**
     * Utility method to send an email from a controller. This method is async,
     * so use the await keyword (or eventually a promise) to correctly read the
     * return value.
     * This method uses the template engine to compile the email.
     * @param req the current request
     * @param dest the email destination (can also be an array of addresses)
     * @param subjectTemplateString the subject of the email, that can also be a string template
     * @param textTemplate the text version of the email, referencing a path in the view folders
     * @param htmlTemplate the html version of the email, referencing a path in the view folders
     * @param context a plain object containing any necessary data needed by the view
     */
    sendMail(req: express.Request, dest: string | string[], subjectTemplateString: string, textTemplate: string, htmlTemplate: string, context: any): Promise<boolean>;
    /**
     * Utility method to obtain a translated string.
     * @param str the string key to be transalted
     * @param req the original request
     */
    tr(str: string, req: Request): string;
}