(Node.js) Refresh QuickBooks OAuth2 Access Token

Demonstrates how to refresh a QuickBooks OAuth2 access token.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

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

    // See Get QuickBooks OAuth2 Access Token 
    // for sample code showing how to obtain a QuickBooks access token for desktop apps.

    // This example assumes we previously obtained an OAuth2 access token for QuickBooks.

    var jsonToken = new chilkat.JsonObject();
    var success = jsonToken.LoadFile("qa_data/tokens/qb-access-token.json");
    if (success !== true) {
        console.log("Failed to load qb-access-token.json");
        return;
    }

    // The access token JSON looks something like this:

    // {
    //   "expires_in": 3600,
    //   "x_refresh_token_expires_in": 8726400,
    //   "refresh_token": "L011546037639r ... 3vR2DrbOmg0Sdagw",
    //   "access_token": "eyJlbmMiOiJBMTI4Q0 ... oETJEMbeggg",
    //   "token_type": "bearer"
    // }

    var oauth2 = new chilkat.OAuth2();

    oauth2.TokenEndpoint = "https://oauth.platform.intuit.com/oauth2/v1/tokens/bearer";

    // Replace these with actual values.
    oauth2.ClientId = "QUICKBOOKS-CLIENT-ID";
    oauth2.ClientSecret = "QUICKBOOKS-CLIENT-SECRET";

    // Get the "refresh_token"
    oauth2.RefreshToken = jsonToken.StringOf("refresh_token");

    // Send the HTTP POST to refresh the access token..
    success = oauth2.RefreshAccessToken();
    if (success !== true) {
        console.log(oauth2.LastErrorText);
        return;
    }

    // The response contains a new access token, but we must keep
    // our existing refresh token for when we need to refresh again in the future.
    jsonToken.UpdateString("access_token",oauth2.AccessToken);

    // Save the new JSON access token response to a file.
    // The access + refresh tokens contained in this JSON will be needed for the next refresh.
    var sbJson = new chilkat.StringBuilder();
    jsonToken.EmitCompact = false;

    jsonToken.EmitSb(sbJson);
    sbJson.WriteFile("qa_data/tokens/qb-access-token.json","utf-8",false);

    console.log("OAuth2 token refreshed!");
    console.log("New Access Token = " + oauth2.AccessToken);

}

chilkatExample();