openaire-library/sharedComponents/base/base.component.ts

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import {Directive, OnDestroy} from "@angular/core";
import {BehaviorSubject, Subscriber} from "rxjs";
import {EnvProperties} from "../../utils/properties/env-properties";
import {properties} from "src/environments/environment";
import {PiwikService} from "../../utils/piwik/piwik.service";
import {Meta, Title} from "@angular/platform-browser";
import {SEOService} from "../SEO/SEO.service";
import {ActivatedRoute, Data, NavigationEnd, Params, Router} from "@angular/router";
@Directive()
export abstract class BaseComponent implements OnDestroy {
public properties: EnvProperties = properties;
/** Router params */
protected paramsResolved: boolean = false;
protected params: BehaviorSubject<Params>;
protected data: BehaviorSubject<Data>;
protected subscriptions: any[] = [];
/** Metadata */
public title: string;
public description: string;
protected _route: ActivatedRoute;
protected _piwikService: PiwikService;
protected _meta: Meta;
protected seoService: SEOService;
protected _title: Title;
protected _router: Router;
protected constructor() {
}
ngOnDestroy() {
this.subscriptions.forEach(subscription => {
if (subscription instanceof Subscriber) {
subscription.unsubscribe()
} else if (subscription instanceof Function) {
subscription();
} else if (typeof IntersectionObserver !== 'undefined' && subscription instanceof IntersectionObserver) {
subscription.disconnect();
} else if (typeof ResizeObserver !== 'undefined' && subscription instanceof ResizeObserver) {
subscription.disconnect();
}
});
}
/**
* Initialize router params and data (should be called in the constructor)
* */
initRouterParams(route: ActivatedRoute = null) {
if (route) {
this.params = new BehaviorSubject<Params>(null);
this.data = new BehaviorSubject<Data>(null);
this.subscriptions.push(this._router.events.subscribe(event => {
if (event instanceof NavigationEnd) {
let r = route;
while (r.firstChild) {
r = r.firstChild;
}
this.paramsResolved = true;
this.params.next(r.snapshot.params);
this.data.next(r.snapshot.data);
}
}));
}
}
public setMetadata() {
if (this._title && this.title) {
this.title = (this._route?.snapshot.data?.title ? this._route.snapshot.data?.title : '') + this.title;
this._title.setTitle(this.title);
}
if (this._router) {
const url = properties.domain + properties.baseLink + this._router.url;
if (this.seoService) {
this.seoService.createLinkForCanonicalURL(url, false);
}
if (this._meta) {
this._meta.updateTag({content: url}, "property='og:url'");
this._meta.updateTag({content: this.description}, "name='description'");
this._meta.updateTag({content: this.description}, "property='og:description'");
this._meta.updateTag({content: this.title}, "property='og:title'");
}
}
if (this._piwikService) {
this.subscriptions.push(this._piwikService.trackView(properties, this.title).subscribe());
}
}
}