OpenSlides/client/src/app/core/services/auth.service.ts

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import { Injectable } from '@angular/core';
import { HttpClient, HttpResponse, HttpErrorResponse, HttpHeaders } from '@angular/common/http';
import { Observable, of, throwError } from 'rxjs';
import { catchError, tap } from 'rxjs/operators';
import { User } from 'app/core/models/user';
const httpOptions = {
withCredentials: true,
headers: new HttpHeaders({
'Content-Type': 'application/json'
})
};
@Injectable({
providedIn: 'root'
})
export class AuthService {
isLoggedIn: boolean;
// store the URL so we can redirect after logging in
redirectUrl: string;
constructor(private http: HttpClient) {
//check for the cookie in local storrage
//TODO checks for username now since django does not seem to return a cookie
if (localStorage.getItem('username')) {
this.isLoggedIn = true;
} else {
this.isLoggedIn = false;
}
}
// Initialize the service by querying the server
// Not sure if this makes sense, since a service is not supposed to init()
init(): Observable<User | any> {
return this.http.get<User>('/users/whoami/', httpOptions).pipe(
tap(val => {
console.log('auth-init-whami : ', val);
}),
catchError(this.handleError())
);
}
//loggins a users. expects a user model
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login(username: string, password: string): Observable<User | any> {
const user: any = {
username: username,
password: password
};
return this.http.post<any>('/users/login/', user, httpOptions).pipe(
tap(val => {
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localStorage.setItem('username', val.username);
this.isLoggedIn = true;
}),
catchError(this.handleError())
);
}
//logout the user
//TODO not yet used
logout(): Observable<User | any> {
this.isLoggedIn = false;
localStorage.removeItem('username');
return this.http.post<User>('/users/logout/', {}, httpOptions);
}
//very generic error handling function.
//implicitly returns an observable that will display an error message
private handleError<T>() {
return (error: any): Observable<T> => {
console.error(error);
return of(error);
};
}
}