feat: add api to connect user completion form to backend

src/lib/authToken.ts

@@ -0,0 +1,34 @@
+// src/lib/authService.ts
+import axios from 'axios';
+
+export interface TokenResponse {
+  access_token: string;
+  expires_in: number;
+  refresh_token: string;
+}
+
+const authClient = axios.create({
+  baseURL: 'https://account.business-harmony.com',
+  timeout: 10000,
+  headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
+});
+
+export async function loginWithPassword(
+  username: string,
+  password: string,
+): Promise<TokenResponse> {
+  const body = new URLSearchParams();
+  body.set('grant_type', 'password');
+  body.set('username', username);
+  body.set('password', password);
+  body.set('client_id', 'harmony_identity');
+  body.set('scope', 'openid harmony_identity profile offline_access');
+
+  const { data } = await authClient.post<TokenResponse>(
+    '/connect/token',
+    body.toString(),
+  );
+
+  localStorage.setItem('authToken', data.access_token);
+  return data;
+}