"Re-Auth" on token expiration

If you are using ts-force on a server or long-running process, you might want to setup automatic reauth when your current token expires.

While this is not support "natively", the AxiosInstance is exposed via Rest.request for use cases like this.

Below is an example using axios-auth-refresh to automatically create a new token via Username/Password flow, but the same concept applies for other methods.

import {Rest, requestAccessToken} from 'ts-force';
import createAuthRefreshInterceptor from 'axios-auth-refresh';

async function getToken(){
  return await requestAccessToken({
    grant_type: 'password',
    instanceUrl: process.env.HOST,
    client_id: process.env.CLIENT_ID,
    client_secret: process.env.CLIENT_SECRET,
    username: process.env.USERNAME,
    password: process.env.PASSWORD,
 });
}

const restInstance = new Rest(await getToken());

const refreshAuthLogic = async (failedRequest: any) => {
    const newToken = await getToken();
    const newAuthHeader = 'Bearer ' + newToken.accessToken;
    failedRequest.response.config.headers['Authorization'] = newAuthHeader;
    //also update our instance so any additional request use the new token
    restInstance.request.defaults.headers['Authorization'] = newAuthHeader;
};

createAuthRefreshInterceptor(restInstance.request, refreshAuthLogic);