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