(Node.js) ABN AMRO OAuth2 Client Credentials Authentication

Demonstrates how to obtain an access token for an ABN AMRO online API using OAuth2 with the Client Credentials flow.

For more information, see https://developer.abnamro.com/api/payment-initiation-v1/payment-initiation-tutorial

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.

    // This example sends the following CURL request:

    // 	curl -X POST -k https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2 \
    // 	-v \
    // 	--cert TPPCertificate.crt \
    // 	--key TPPprivateKey.key \
    // 	-H 'Cache-Control: no-cache' \
    // 	-H 'Content-Type: application/x-www-form-urlencoded' \
    // 	-d 'grant_type=client_credentials&client_id=TPP_test&scope=psd2:payment:sepa:write psd2:payment:sepa:read'

    var cert = new chilkat.Cert();
    var success = cert.LoadFromFile("qa_data/certs/TPPCertificate.cer");
    if (success !== true) {
        console.log(cert.LastErrorText);
        return;
    }

    var bdKey = new chilkat.BinData();
    success = bdKey.LoadFile("qa_data/certs/TPPprivateKey.key");

    var privKey = new chilkat.PrivateKey();
    success = privKey.LoadAnyFormat(bdKey,"passwordIfNeeded");
    if (success !== true) {
        console.log(privKey.LastErrorText);
        return;
    }

    success = cert.SetPrivateKey(privKey);
    if (success !== true) {
        console.log(cert.LastErrorText);
        return;
    }

    var http = new chilkat.Http();

    success = http.SetSslClientCert(cert);
    if (success !== true) {
        console.log(http.LastErrorText);
        return;
    }

    var req = new chilkat.HttpRequest();
    req.AddParam("grant_type","client_credentials");
    req.AddParam("client_id","TPP_test");
    req.AddParam("scope","psd2:payment:sepa:write psd2:payment:sepa:read");

    // resp: HttpResponse
    var resp = http.PostUrlEncoded("https://auth-sandbox.connect.abnamro.com:8443/as/token.oauth2",req);
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

    if (resp.StatusCode !== 200) {
        console.log(resp.BodyStr);

        return;
    }

    // Get the JSON result:
    // {"access_token":"TIhycwl8rfrZPkXGw15mwldASAAK","token_type":"Bearer","expires_in":7200}
    var json = new chilkat.JsonObject();
    json.Load(resp.BodyStr);
    console.log("access_token: " + json.StringOf("access_token"));
    console.log("token_type: " + json.StringOf("token_type"));
    console.log("expires_in: " + json.StringOf("expires_in"));


}

chilkatExample();