/** This file contains interfaces for Screen Activation Lifecycle hooks that Views can use. */
declare module 'aurelia/lifecycle/view-hooks' {
    import {Router, RouterConfiguration, RouteConfig, NavigationInstruction} from "aurelia-router";
    /**
     * A Navigation Command is any object with a navigate(router: Router) method.
     * When a navigation command is encountered, the current navigation will be cancelled and
     * control will be passed to the navigation command so it can determine the correct action.
     */
    export type NavicationCommand = {
        navigate(appRouter: Router): void
    }

    /** contains property for each route parameter */
    export type RouteParams = Object;

    export type ActivationResult = boolean | Promise<boolean> | NavicationCommand;


    export interface ConfigureRouter {
        /**
         * Implement this hook if you want to add sub-routes to your view.
         */
        configureRouter(config: RouterConfiguration, router: Router);
    }

    export interface CanActivate {
        /**
         * Implement this hook if you want to control whether or not your view-model can be navigated to.
         * Return a boolean value, a promise for a boolean value, or a navigation command.
         */
        canActivate(params: RouteParams, routerConfig: RouteConfig, navigationInstruction: NavigationInstruction): ActivationResult;
    }

    export interface Activate {
        /**
         * Implement this hook if you want to perform custom logic just before your view-model is displayed.
         * You can optionally return a promise to tell the router to wait to bind and attach the view until after you finish your work.
         */
        activate(params: RouteParams, routerConfig: RouteConfig, navigationInstruction: NavigationInstruction): void | Promise<any>;
    }


    export interface CanDeactivate {
        /**
         * Implement this hook if you want to control whether or not the router can navigate away from your view-model when moving to a new route.
         * Return a boolean value, a promise for a boolean value, or a navigation command.
         */
        canDeactivate(): ActivationResult;
    }

    export interface Deactivate {
        /**
         * Implement this hook if you want to perform custom logic when your view-model is being navigated away from.
         * You can optionally return a promise to tell the router to wait until after you finish your work.
         */
        deactivate(): void | Promise<any>;
    }
}