(Ruby) 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

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

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

http = Chilkat::CkHttp.new()

# First load the certificate and private key, and set as the HTTP object's client certificate.
cert = Chilkat::CkCert.new()
success = cert.LoadFromFile("<nome arquivo certificado>.crt")
if (success == false)
    print cert.lastErrorText() + "\n";
    exit
end

bdPrivKey = Chilkat::CkBinData.new()
success = bdPrivKey.LoadFile("<nome arquivo chave privada>.key")
if (success == false)
    print "Failed to load <nome" + "\n";
    exit
end

privKey = Chilkat::CkPrivateKey.new()
success = privKey.LoadAnyFormat(bdPrivKey,"")
if (success == false)
    print privKey.lastErrorText() + "\n";
    exit
end

success = cert.SetPrivateKey(privKey)
if (success == false)
    print cert.lastErrorText() + "\n";
    exit
end

success = http.SetSslClientCert(cert)
if (success == false)
    print http.lastErrorText() + "\n";
    exit
end

req = Chilkat::CkHttpRequest.new()
req.put_HttpVerb("POST")
req.put_Path("/oauth/v2/token")
req.put_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 is a CkHttpResponse
resp = http.PostUrlEncoded("https://cdpj.partners.bancointer.com.br/oauth/v2/token",req)
if (http.get_LastMethodSuccess() == false)
    print http.lastErrorText() + "\n";
    exit
end

jResp = Chilkat::CkJsonObject.new()
resp.GetBodyJson(jResp)
jResp.put_EmitCompact(false)

print "Response Body:" + "\n";
print jResp.emit() + "\n";

respStatusCode = resp.get_StatusCode()
print "Response Status Code = " + respStatusCode.to_s() + "\n";
if (respStatusCode >= 400)
    print "Response Header:" + "\n";
    print resp.header() + "\n";
    print "Failed." + "\n";

    exit
end

success = jResp.WriteFile("qa_data/tokens/banco_inter_client_credentials.json")
if (success == false)
    print "Failed to save JSON access token file." + "\n";
    exit
end

print "Success." + "\n";