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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | 1x 1x 1x 1x 1x 1x 2x 4x 4x 4x 4x 1x 3x 1x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 1x 1x 1x 1x 1x 1x 1x 1x | import { HttpErrorResponse, HttpHandler, HttpInterceptor, HttpRequest } from "@angular/common/http";
import { Injectable } from "@angular/core";
import { SessionService } from '@core/services/session.service';
import { AuthService } from "@core/services/auth.service";
import { BehaviorSubject, catchError, filter, switchMap, take, throwError } from "rxjs";
import { SessionInformation } from "@core/model/session-information.interface";
import { ApiError } from "@core/errors/api-error";
import { ErrorProcessorService } from "@core/services/error-processor.service";
@Injectable({ providedIn: 'root' })
export class JwtInterceptor implements HttpInterceptor {
private isRefreshing = false;
private refreshTokenSubject: BehaviorSubject<boolean> = new BehaviorSubject<boolean>(true);
constructor(private sessionService: SessionService, private authService: AuthService, private errorProcessorService: ErrorProcessorService) {}
public intercept(request: HttpRequest<unknown>, next: HttpHandler) {
if (!this.sessionService.isLogged()) {
return next.handle(request);
}
if(!request.url.match(/api\//)) {
return next.handle(request);
}
return next.handle(request).pipe(
catchError(error => {
if (this.shouldTryToRefreshToken(request, error)) {
return this.tryToRefreshToken(request, next);
}
return this.errorProcessorService.processError(error);
})
);
}
private shouldTryToRefreshToken(request: HttpRequest<unknown>, error: HttpErrorResponse) :boolean {
console.log('shouldTryToRefreshToken?');
return error instanceof HttpErrorResponse && error.status === 401 && !request.url.includes('auth/login') && !request.url.includes('auth/refresh-token')
}
private tryToRefreshToken(request: HttpRequest<unknown>, next: HttpHandler) {
if (!this.isRefreshing) {
this.isRefreshing = true;
this.refreshTokenSubject.next(false);
const isLogged = this.sessionService.isLogged();
if (isLogged) {
return this.authService.refreshToken().pipe(
switchMap((data: SessionInformation) => {
this.isRefreshing = false;
this.sessionService.logIn(data);
this.refreshTokenSubject.next(true);
return next.handle(request);
}),
catchError((error: ApiError) => {
this.isRefreshing = false;
this.refreshTokenSubject.next(false);
this.sessionService.logOut();
return this.errorProcessorService.processError(error);
})
);
}
}
// let's handle original request with the new token
return this.refreshTokenSubject.pipe(
filter(token => token !== false),
take(1),
switchMap(() => next.handle(request))
);
}
}
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