openaire-library/services/user-management.service.ts

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import {Injectable} from '@angular/core';
import {HttpClient} from '@angular/common/http';
import {BehaviorSubject, from, Observable, of} from "rxjs";
import {COOKIE, User} from "../login/utils/helper.class";
import {catchError, map, timeout} from "rxjs/operators";
import {NavigationEnd, Router} from "@angular/router";
import {properties} from "../../../environments/environment";
@Injectable({
providedIn: 'root'
})
export class UserManagementService {
private getUserInfoSubject: BehaviorSubject<User> = new BehaviorSubject<User>(null);
private readonly promise: Promise<User>;
constructor(private http: HttpClient,
private router: Router) {
this.promise = new Promise<any>((resolve => {
this.updateUserInfo(resolve);
}));
this.router.events.subscribe(event => {
if (event instanceof NavigationEnd) {
const token = COOKIE.getCookie('AccessToken');
if (!token && this.getUserInfoSubject.getValue() !== null) {
this.getUserInfoSubject.next(null);
}
}
})
}
public getUserInfo(subject: boolean = true): Observable<User> {
if (subject) {
return this.getUserInfoSubject.asObservable();
} else {
return from(this.getUserInfoAsync());
}
}
public updateUserInfo(resolve: Function = null) {
const token = COOKIE.getCookie('AccessToken');
if (!token) {
this.getUserInfoSubject.next(null);
if(resolve) {
resolve();
}
} else {
this.http.get<User>(properties.userInfoUrl + token).pipe(map(userInfo => {
return this.parseUserInfo(userInfo);
})).pipe(timeout(3000), catchError(() => {
return of(null);
})).subscribe(user => {
this.getUserInfoSubject.next(user);
if(resolve) {
resolve();
}
});
}
}
private async getUserInfoAsync(): Promise<User> {
await this.promise;
return this.getUserInfoSubject.getValue();
}
private parseUserInfo(info: any) {
const user: User = new User();
user.id = (info.sub && info.sub.indexOf('@')) ? info.sub.substring(0, info.sub.indexOf('@')) : info.sub;
user.firstname = (info.given_name) ? info.given_name : "";
user.lastname = (info.family_name) ? info.family_name : "";
user.email = info.email.toLowerCase(); // TODO remove, is a quick fix
user.fullname = (info.name) ? info.name : "";
if (user.fullname == "") {
if (user.firstname != "") {
user.fullname += user.firstname;
}
if (user.lastname != "") {
user.fullname += user.lastname;
}
if (user.fullname == "") { //fullname is still empty set a default
user.fullname = "Anonymous user";
}
}
user.role = [];
if (info.roles) {
info.roles.forEach(role => {
user.role.push(role);
});
}else{
if (info.edu_person_entitlements) {
user.role = info.edu_person_entitlements;
}
}
user.expirationDate = info.exp_date;
return user;
}
}