First implementation of refresh token.

frontend/src/app/core/service/authentication.service.ts

@@ -1,7 +1,10 @@
-import { Injectable } from "@angular/core";
+import { inject, Injectable } from "@angular/core";
 import { User } from "../model/User";
+import { UserRestService } from "../rest-services/user/user.rest-service";
+import { RefreshTokenRequest } from "../rest-services/user/model/refresh-token.model";
 
 const JWT_PARAM = 'jwt';
+const REFRESH_TOKEN_PARAM = 'refresh-token';
 
 interface UserDetails {
     sub: string;
@@ -15,8 +18,11 @@ interface UserDetails {
     providedIn: 'root'
 })
 export class AuthenticationService {
-    authenticate(token: string): void {
+    private userRestService = inject(UserRestService);
+
+    authenticate(token: string, refreshToken: string): void {
         localStorage.setItem(JWT_PARAM, token);
+        localStorage.setItem(REFRESH_TOKEN_PARAM, refreshToken);
     }
 
     unauthenticate(): void {
@@ -44,6 +50,34 @@ export class AuthenticationService {
         return localStorage.getItem(JWT_PARAM) ?? undefined;
     }
 
+    isTokenExpired(): boolean {
+        let result = false;
+
+        const userDetails = this.extractUserDetails();
+
+        if (userDetails) {
+            const expirationDate = new Date(userDetails.exp * 1000);
+            const now = new Date();
+
+            result = expirationDate < now;
+        }
+
+        return result;
+    }
+
+    renewToken(): void {
+        const refreshToken = localStorage.getItem(REFRESH_TOKEN_PARAM);
+        if (refreshToken) {
+            const request: RefreshTokenRequest = {
+                refreshTokenValue: refreshToken
+            };
+            this.userRestService.refreshToken(request)
+                .then(refreshTokenResponse => {
+                    this.authenticate(refreshTokenResponse.accessToken, refreshTokenResponse.refreshToken);
+                });
+        }
+    }
+
     private extractUserFromLocalStorage(): User | undefined {
         let result: User | undefined = undefined;