enbock / Application-Router

import {Observer} from '@enbock/state-value-observer/ValueObserver';

import {PageData} from './Router';

export interface PageDictionary<Type> {

  [index: string]: Type

}

export default class Registry {

  dictionary: PageDictionary<PageData>;

  observer: Observer<PageData | null>;

  constructor(observer: Observer<PageData | null>) {

    this.observer = observer;

    this.dictionary = {};

  }

  attachAdapter(adapter: ListenerAdapter<PageData | null>): void {

    adapter.addListener(this.updatePageData.bind(this));

  }

  getPages(): PageData[] {

    const pages: PageData[] = [];

    Object.keys(this.dictionary).forEach((pageName: string) => {

      const page: PageData = this.dictionary[pageName];

      pages.push(page);

    });

    return pages;

  }

  registerPage(page: PageData) {

    if (this.observer.value != null) {

      this.updatePageUrlByDepth(this.observer.value, page);

    }

    this.dictionary[page.name] = page;

  }

  protected updatePageData(newValue: PageData | null): void {

    if (newValue == null) return;

    Object.keys(this.dictionary).forEach(

      (pageName: string) => {

        this.updatePageUrlByDepth(newValue, this.dictionary[pageName]);

      }

    );

  }

}