Début d'ajout pour la gestion du login

Front/skydivelogs-app/src/interceptor/basic-auth.interceptor.ts

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+import { Injectable } from '@angular/core';
+import { HttpRequest, HttpHandler, HttpEvent, HttpInterceptor } from '@angular/common/http';
+import { Observable } from 'rxjs';
+
+import { AuthenticationService } from '../services/authentication.service';
+
+@Injectable()
+export class BasicAuthInterceptor implements HttpInterceptor {
+  constructor(private authenticationService: AuthenticationService) { }
+
+  intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
+    // add authorization header with basic auth credentials if available
+    const currentUser = this.authenticationService.currentUserValue;
+    if (currentUser && currentUser.authdata) {
+      request = request.clone({
+        setHeaders: {
+          Authorization: `Basic ${currentUser.authdata}`
+        }
+      });
+    }
+
+    return next.handle(request);
+  }
+}

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

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+import { Injectable } from '@angular/core';
+import {
+  HttpEvent,
+  HttpRequest,
+  HttpResponse,
+  HttpInterceptor,
+  HttpHandler
+} from '@angular/common/http';
+
+import { Observable } from 'rxjs/Observable';
+import { startWith, tap } from 'rxjs/operators';
+import 'rxjs/add/observable/of';
+
+import { RequestCache } from '../services/request-cache.service';
+
+@Injectable()
+export class CachingInterceptor implements HttpInterceptor {
+  constructor(private cache: RequestCache) { }
+
+  intercept(req: HttpRequest<any>, next: HttpHandler) {
+    const cachedResponse = this.cache.get(req);
+    return cachedResponse
+      ? Observable.of(cachedResponse)
+      : this.sendRequest(req, next);
+  }
+
+  sendRequest(
+    req: HttpRequest<any>,
+    next: HttpHandler
+  ): Observable<HttpEvent<any>> {
+    return next.handle(req).pipe(
+      tap(event => {
+        if (event instanceof HttpResponse) {
+          this.cache.put(req, event);
+        }
+      })
+    );
+  }
+}

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

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+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);
+    }))
+  }
+}