Scripts for token management

Pre-request scripts to renew access token automatically

const authen = {
    refresh_token : pm.environment.get('refreshToken'),
    client_id : pm.environment.get('clientId'),
    client_secret :  pm.environment.get('clientSecret'),
    grant_type : 'refresh_token',
    mode: 'application/json'
};
var body = JSON.stringify(authen);

const echoPostRequest = {
url: 'https://api.customerregion-sagex3.com/v1/token',
method: 'POST',
header: 'Content-Type:application/json',
body: body
};

if (!pm.environment.get('accessTokenExpiry') ||
    !pm.environment.get('accessToken')
    ||pm.environment.get('accessTokenExpiry') <= (new Date()).getTime()) {

    //First use or access token expired
    pm.sendRequest(echoPostRequest, function (err, res) {
    console.log(err ? err : res.json());
        if (err === null) {
            //Saving the access token
            var responseJson = res.json();
            if (responseJson.access_token !== undefined) {
                pm.environment.set('accessToken', responseJson.access_token)
                var expiryDate = new Date();
                //Saving the expiry date = date + 300 seconds (5 minutes)
                expiryDate.setSeconds(expiryDate.getSeconds() + responseJson.expires_in);
                pm.environment.set('accessTokenExpiry', expiryDate.getTime());
                //Saving the refresh token
                pm.environment.set('refreshToken',  responseJson.refresh_token);
            }
        }
    });
}