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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, Session, User} from "../login/utils/helper.class";
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import {map} from "rxjs/operators";
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import {NavigationEnd, Router} from "@angular/router";
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import {properties} from "../../../environments/environment";
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import {el} from "@angular/platform-browser/testing/src/browser_util";
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import {StringUtils} from "../utils/string-utils.class";
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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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public fixRedirectURL: string = null;
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private readonly promise: Promise<User>;
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sub;
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routeSub;
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constructor(private http: HttpClient,
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private router: Router) {
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this.promise = new Promise<any>((resolve => {
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this.updateUserInfo(resolve);
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}));
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this.routeSub = 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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clearSubscriptions() {
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if(this.routeSub){
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this.routeSub.unsubscribe();
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}
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if(this.sub){
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this.sub.unsubscribe();
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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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public updateUserInfo(resolve: Function = null) {
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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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if(resolve) {
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resolve();
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}
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} else {
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this.sub = this.http.get<User>(properties.userInfoUrl + token).pipe(map(userInfo => {
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return this.parseUserInfo(userInfo);
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})).subscribe(user => {
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this.getUserInfoSubject.next(user);
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if(resolve) {
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resolve();
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}
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}, error => {
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this.getUserInfoSubject.next(null);
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if(resolve) {
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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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private async getUserInfoAsync(): Promise<User> {
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await this.promise;
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if(this.sub){
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this.sub.unsubscribe();
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}
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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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user.role = [];
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if (info.roles) {
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info.roles.forEach(role => {
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user.role.push(role);
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});
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}else{
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if (info.edu_person_entitlements) {
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user.role = info.edu_person_entitlements;
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}
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}
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user.expirationDate = info.exp_date;
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return user;
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}
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public setRedirectUrl(url: string = null) {
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if(url) {
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let parts = url.split('?');
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let path = properties.baseLink + parts[0];
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let params = null;
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if (parts.length == 2) {
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params = parts[1];
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}
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let hash = path.indexOf("#");
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let fragment = (hash !== -1)?path.slice(hash + 1):null;
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if(fragment) {
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path = path.slice(0, hash);
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} else {
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fragment = "";
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}
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if(!path.includes('/reload')) {
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Session.setReloadUrl(location.protocol + "//" + location.host, path, params, fragment);
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}
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} else {
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Session.setReloadUrl(location.protocol + "//" + location.host, location.pathname, location.search, location.hash);
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}
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}
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public login() {
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if(this.fixRedirectURL) {
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this.setRedirectUrl(this.fixRedirectURL);
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} else {
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this.setRedirectUrl();
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}
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window.location.href = properties.loginUrl;
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}
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public logout() {
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this.setRedirectUrl();
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Session.removeUser();
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if (properties.logoutUrl.includes('openid_logout')) {
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window.location.href = properties.logoutUrl;
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} else {
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window.location.href = properties.logoutUrl + StringUtils.URIEncode(location.href);
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}
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}
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}
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