import {ActivatedRouteSnapshot, DetachedRouteHandle, RouteReuseStrategy} from '@angular/router';
import {LogInComponent} from '../components/authorization/log-in/log-in.component';

export class CustomRouteReuseStrategy implements RouteReuseStrategy {
    private handlers: { [key: string]: DetachedRouteHandle } = {};

    shouldDetach(route: ActivatedRouteSnapshot): boolean {
        return true;
    }

    store(route: ActivatedRouteSnapshot, handle: DetachedRouteHandle): void {
        const url = route.url.join('/') || route.parent.url.join('/');

        this.handlers[url] = handle;
    }

    shouldAttach(route: ActivatedRouteSnapshot): boolean {
        if (route.component === LogInComponent) {
            this.handlers = {};
            return false;
        }

        const url = route.url.join('/') || route.parent.url.join('/');

        return !!this.handlers[url];
    }

    retrieve(route: ActivatedRouteSnapshot): DetachedRouteHandle {
        return this.handlers[route.url.join('/') || route.parent.url.join('/')];
    }

    shouldReuseRoute(future: ActivatedRouteSnapshot, curr: ActivatedRouteSnapshot): boolean {
        return future.routeConfig === curr.routeConfig;
    }
}