Début d'ajout pour la gestion du login

Front/skydivelogs-app/src/interceptor/error.interceptor.ts

@@ -0,0 +1,24 @@
+import { Injectable } from '@angular/core';
+import { HttpRequest, HttpHandler, HttpEvent, HttpInterceptor } from '@angular/common/http';
+import { Observable, throwError } from 'rxjs';
+import { catchError } from 'rxjs/operators';
+
+import { AuthenticationService } from '../services/authentication.service';
+
+@Injectable()
+export class ErrorInterceptor implements HttpInterceptor {
+  constructor(private authenticationService: AuthenticationService) { }
+
+  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
+    return next.handle(request).pipe(catchError(err => {
+      if (err.status === 401) {
+        // auto logout if 401 response returned from api
+        this.authenticationService.logout();
+        location.reload(true);
+      }
+
+      const error = err.error.message || err.statusText;
+      return throwError(error);
+    }))
+  }
+}