(JavaScript) Calendar: Refresh Expired OAuth2 Access Token

Refreshes an expired OAuth2 access token.

Note: This example requires Chilkat v11.0.0 or greater.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

var json = new CkJsonObject();
success = json.LoadFile("qa_data/tokens/msGraphCalendar.json");
if (success !== true) {
    return;
}

var req = new CkHttpRequest();
req.AddParam("grant_type","refresh_token");
req.AddParam("redirect_uri","http://localhost:3017/");
req.AddParam("client_id","MICROSOFT-GRAPH-CLIENT-ID");
req.AddParam("client_secret","MICROSOFT-GRAPH-CLIENT-SECRET");
req.AddParam("refresh_token",json.StringOf("refresh_token"));
req.AddParam("scope","openid profile offline_access user.readwrite calendars.readwrite files.readwrite");

var http = new CkHttp();

req.HttpVerb = "POST";
req.ContentType = "application/x-www-form-urlencoded";

var resp = new CkHttpResponse();
success = http.HttpReq("https://login.microsoftonline.com/common/oauth2/v2.0/token",req,resp);
if (success == false) {
    console.log(http.LastErrorText);
    return;
}

// Load the JSON response.
json.Load(resp.BodyStr);
json.EmitCompact = false;

// Show the JSON response.
console.log(json.Emit());

console.log("Response status code: " + resp.StatusCode);

// If the response status code is not 200, then it's an error.
if (resp.StatusCode !== 200) {
    return;
}

// Save the refreshed access token JSON to a file for future requests.
var fac = new CkFileAccess();
fac.WriteEntireTextFile("qa_data/tokens/msGraphCalendar.json",json.Emit(),"utf-8",false);

console.log("Success.");