(Node.js) MYOB: Get OAuth 2.0 Access Token

Uses OAuth 2.0 to get a MYOB access token.

Note: This example requires Chilkat v10.1.2 or greater.

For more information, see https://developer.myob.com/api/accountright/api-overview/authentication/

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

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    // For more information about the OAuth2, see OAuth 2.0 Authorization Flow

    var oauth2 = new chilkat.OAuth2();

    // This should be the port in the localhost callback URL for your app.  
    // The callback URL would look like "http://localhost:3017/" if the port number is 3017.
    oauth2.ListenPort = 3017;

    oauth2.AuthorizationEndpoint = "https://secure.myob.com/oauth2/account/authorize";
    oauth2.TokenEndpoint = "https://secure.myob.com/oauth2/v1/authorize";

    // Replace these with actual values.
    oauth2.ClientId = "MYOB_CLIENT_ID";
    oauth2.ClientSecret = "MYOB_CLIENT_SECRET";
    oauth2.CodeChallenge = false;

    oauth2.Scope = "CompanyFile";

    // Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
    var url = oauth2.StartAuth();
    if (oauth2.LastMethodSuccess !== true) {
        console.log(oauth2.LastErrorText);
        return;
    }

    console.log("url = " + url);

    // Launch the default browser on the system and navigate to the url.
    // The LaunchBrowser method was added in Chilkat v10.1.2.
    var success = oauth2.LaunchBrowser(url);
    if (success == false) {
        console.log(oauth2.LastErrorText);
        return;
    }

    // Wait for the user to approve or deny authorization in the browser.
    var numMsWaited = 0;
    while ((numMsWaited < 90000) && (oauth2.AuthFlowState < 3)) {
        oauth2.SleepMs(100);
        numMsWaited = numMsWaited+100;
    }

    // If the browser does not respond within the specified time, AuthFlowState will be:
    // 
    // 1: Waiting for Redirect - The OAuth2 background thread is waiting for the browser's redirect request.
    // 2: Waiting for Final Response - The thread is awaiting the final access token response.
    // In either case, cancel the background task initiated by StartAuth.

    if (oauth2.AuthFlowState < 3) {
        oauth2.Cancel();
        console.log("No response from the browser!");
        return;
    }

    // Check AuthFlowState to determine if authorization was granted, denied, or failed:
    // 
    // 3: Success - OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
    // 4: Access Denied - OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
    // 5: Failure - OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

    if (oauth2.AuthFlowState == 5) {
        console.log("OAuth2 failed to complete.");
        console.log(oauth2.FailureInfo);
        return;
    }

    if (oauth2.AuthFlowState == 4) {
        console.log("OAuth2 authorization was denied.");
        console.log(oauth2.AccessTokenResponse);
        return;
    }

    if (oauth2.AuthFlowState !== 3) {
        console.log("Unexpected AuthFlowState:" + oauth2.AuthFlowState);
        return;
    }

    console.log("OAuth2 authorization granted!");
    console.log("Access Token = " + oauth2.AccessToken);

    // Get the full JSON response:
    var json = new chilkat.JsonObject();
    json.Load(oauth2.AccessTokenResponse);
    json.EmitCompact = false;
    console.log(json.Emit());

    // The JSON response looks like this:

    // Save the JSON to a file for future requests.
    var fac = new chilkat.FileAccess();
    fac.WriteEntireTextFile("qa_data/tokens/myob.json",json.Emit(),"utf-8",false);

}

chilkatExample();