(PowerBuilder) Rabobank Refresh OAuth2 Access Token

Demonstrates how to refresh an expired Rabobank OAuth2 access token. (No interactive user interaction is required to refresh an access token.)

For more information, see https://developer.rabobank.nl/implementoauth2

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Json
integer li_Success
oleobject loo_Req
oleobject loo_Http
oleobject loo_Resp
oleobject loo_Fac

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

// We previously obtained an access token and saved the JSON to a file using this example:
// Get Rabobank OAuth2 Access Token

loo_Json = create oleobject
// Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
li_rc = loo_Json.ConnectToNewObject("Chilkat.JsonObject")
if li_rc < 0 then
    destroy loo_Json
    MessageBox("Error","Connecting to COM object failed")
    return
end if
li_Success = loo_Json.LoadFile("qa_data/tokens/rabobank.json")
if li_Success <> 1 then
    destroy loo_Json
    return
end if

// {
//   "token_type": "Bearer",
//   "access_token": "AAIkYTU0ZWM ... sxE0KL0HHWw",
//   "expires_in": 3600,
//   "consented_on": 1584641121,
//   "scope": "ais.balances.read ais.transactions.read-90days ais.transactions.read-history",
//   "refresh_token": "AAJXXSdN ... Uiblz9ILkxNBlytRGA",
//   "refresh_token_expires_in": 157784760,
//   "expires_on": "1584644722"
// }

// Refresh the access token by sending a POST like this:
// 

// POST /oauth2/token
// Headers:
//     Content-Type: application/x-www-form-urlencoded
//     Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)
// 
// Body (x-www-form-urlencoded):
//     grant_type: refresh_token
//     refresh_token: REFRESH_TOKEN

loo_Req = create oleobject
// Use "Chilkat_9_5_0.HttpRequest" for versions of Chilkat < 10.0.0
li_rc = loo_Req.ConnectToNewObject("Chilkat.HttpRequest")

loo_Req.AddParam("grant_type","refresh_token")
loo_Req.AddParam("refresh_token",loo_Json.StringOf("refresh_token"))

loo_Http = create oleobject
// Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
li_rc = loo_Http.ConnectToNewObject("Chilkat.Http")

// Causes the "Authorization: Basic BASE64(CLIENT_ID + ":" + CLIENT_SECRET)" header to be added..
loo_Http.BasicAuth = 1
loo_Http.Login = "YOUR_APP_CLIENT_ID"
loo_Http.Password = "YOUR_APP_CLIENT_SECRET"

loo_Resp = loo_Http.PostUrlEncoded("https://api-sandbox.rabobank.nl/openapi/sandbox/oauth2/token",loo_Req)
if loo_Http.LastMethodSuccess <> 1 then
    Write-Debug loo_Http.LastErrorText
    destroy loo_Json
    destroy loo_Req
    destroy loo_Http
    return
end if

// Load the JSON response.
loo_Json.Load(loo_Resp.BodyStr)
loo_Json.EmitCompact = 0

// Show the JSON response.
Write-Debug loo_Json.Emit()

Write-Debug "Response status code: " + string(loo_Resp.StatusCode)

// If the response status code is not 200, then it's an error.
if loo_Resp.StatusCode <> 200 then
    destroy loo_Json
    destroy loo_Req
    destroy loo_Http
    return
end if

destroy loo_Resp

// Save the refreshed access token JSON to a file for future requests.
loo_Fac = create oleobject
// Use "Chilkat_9_5_0.FileAccess" for versions of Chilkat < 10.0.0
li_rc = loo_Fac.ConnectToNewObject("Chilkat.FileAccess")

loo_Fac.WriteEntireTextFile("qa_data/tokens/rabobank.json",loo_Json.Emit(),"utf-8",0)


destroy loo_Json
destroy loo_Req
destroy loo_Http
destroy loo_Fac