Add basic auth wrapper class

src/lib/utils/AuthService.ts

@@ -0,0 +1,52 @@
+import {
+  AUTH_URL,
+  AUTH_CLIENT_ID,
+  AUTH_REDIRECT_URI,
+  AUTH_SILENT_REDIRECT_URI,
+  AUTH_POST_LOGOUT_URI
+} from '$lib/config';
+import { User, UserManager } from 'oidc-client-ts';
+
+export class AuthService {
+  userManager: UserManager;
+
+  constructor() {
+    const settings = {
+      authority: AUTH_URL,
+      client_id: AUTH_CLIENT_ID,
+      redirect_uri: AUTH_REDIRECT_URI,
+      silent_redirect_uri: AUTH_SILENT_REDIRECT_URI,
+      post_logout_redirect_uri: AUTH_POST_LOGOUT_URI,
+      scope: 'openid online_access',
+    };
+    this.userManager = new UserManager(settings);
+  }
+
+  getUser(): Promise<User | null> {
+    return this.userManager.getUser();
+  }
+
+  login(): Promise<void> {
+    return this.userManager.signinRedirect();
+  }
+
+  renewToken(): Promise<User | null> {
+    return this.userManager.signinSilent();
+  }
+
+  logout(): Promise<void> {
+    return this.userManager.signoutRedirect();
+  }
+
+  async isAuthenticated(): Promise<boolean> {
+    return this.getUser().then((user) => {
+      if (user?.access_token) {
+        return true;
+      } else {
+        return this.renewToken().then((user) => {
+          return user?.access_token ? true : false;
+        });
+      }
+    });
+  }
+}