(Node.js) Banco Inter OAuth2 Client Credentials

Generate an OAuth2 access token needed to consume the Inter APIs.

For more information, see https://developers.bancointer.com.br/reference/token-3

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

    var http = new chilkat.Http();
    var success;

    // First load the certificate and private key, and set as the HTTP object's client certificate.
    var cert = new chilkat.Cert();
    success = cert.LoadFromFile("<nome arquivo certificado>.crt");
    if (success == false) {
        console.log(cert.LastErrorText);
        return;
    }

    var bdPrivKey = new chilkat.BinData();
    success = bdPrivKey.LoadFile("<nome arquivo chave privada>.key");
    if (success == false) {
        console.log("Failed to load <nome");
        return;
    }

    var privKey = new chilkat.PrivateKey();
    success = privKey.LoadAnyFormat(bdPrivKey,"");
    if (success == false) {
        console.log(privKey.LastErrorText);
        return;
    }

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

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

    var req = new chilkat.HttpRequest();
    req.HttpVerb = "POST";
    req.Path = "/oauth/v2/token";
    req.ContentType = "application/x-www-form-urlencoded";
    req.AddParam("grant_type","client_credentials");
    // Requested scopes in OAuth2 are typically SPACE separated.
    req.AddParam("scope","boleto-cobranca.read boleto-cobranca.write");
    req.AddHeader("accept","application/json");

    // resp: HttpResponse
    var resp = http.PostUrlEncoded("https://cdpj.partners.bancointer.com.br/oauth/v2/token",req);
    if (http.LastMethodSuccess == false) {
        console.log(http.LastErrorText);
        return;
    }

    var jResp = new chilkat.JsonObject();
    resp.GetBodyJson(jResp);
    jResp.EmitCompact = false;

    console.log("Response Body:");
    console.log(jResp.Emit());

    var respStatusCode = resp.StatusCode;
    console.log("Response Status Code = " + respStatusCode);
    if (respStatusCode >= 400) {
        console.log("Response Header:");
        console.log(resp.Header);
        console.log("Failed.");

        return;
    }

    success = jResp.WriteFile("qa_data/tokens/banco_inter_client_credentials.json");
    if (success == false) {
        console.log("Failed to save JSON access token file.");
        return;
    }

    console.log("Success.");

}

chilkatExample();