(Xojo Plugin) Isabel Connect Create Access Token given Valid Refresh Token

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Create (refresh) an access token given a valid refresh token.

For more information, see https://documentation.ibanity.com/isabel-connect/api#create-access-token

Chilkat Xojo Plugin Download Xojo Plugin for Windows, Linux, Mac OS X, and ARM, ARM64

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

Dim http As New Chilkat.Http

// Implements the following CURL command:

// curl -X POST https://api.ibanity.com/isabel-connect/oauth2/token \
// --cert certificate.pem:qwertyuiop1 \
// --key private_key.pem  \
// -H "Content-Type: application/x-www-form-urlencoded" \
// -H "Accept: application/vnd.api+json" \
// -H "Ibanity-Idempotency-Key: 94c5586e-e15e-4bae-a1fe-fdbefe1f11d3"  \
// -d grant_type=refresh_token \
// -d refresh_token=valid_refresh_token \
// -d client_id=valid_client_id \
// -d client_secret=valid_client_secret

// Ibanity provides the certificate + private key in PFX format.  This example will use the .pfx instead of the pair of PEM files.
// (It is also possible to implement using Chilkat with the PEM files, but PFX is easier.)
Dim cert As New Chilkat.Cert
Dim success As Boolean
success = cert.LoadPfxFile("qa_data/pfx/my_ibanity_certificate.pfx","my_pfx_password")
If (success = False) Then
    System.DebugLog(cert.LastErrorText)
    Return
End If

success = http.SetSslClientCert(cert)
If (success = False) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

Dim req As New Chilkat.HttpRequest
req.HttpVerb = "POST"
req.Path = "/isabel-connect/oauth2/token"
req.ContentType = "application/x-www-form-urlencoded"
req.AddParam "grant_type","refresh_token"

// Load the previously obtained refresh token.
Dim jsonToken As New Chilkat.JsonObject
success = jsonToken.LoadFile("qa_data/tokens/isabel_refresh_token.json")
If (success = False) Then
    System.DebugLog("No existing access token.")
    Return
End If

req.AddParam "refresh_token",jsonToken.StringOf("refresh_token")

// Note: For sandbox testing, we literally want to use the strings
// "valid_client_id", and "valid_client_secret".
// For the live app, you would replace these with actual values.
req.AddParam "client_id","valid_client_id"
req.AddParam "client_secret","valid_client_secret"

req.AddHeader "Accept","application/vnd.api+json"

Dim crypt As New Chilkat.Crypt2
Dim idempotencyKey As String
idempotencyKey = crypt.GenerateUuid()
System.DebugLog("Ibanity-Idempotency-Key: " + idempotencyKey)
req.AddHeader "Ibanity-Idempotency-Key",idempotencyKey

Dim resp As Chilkat.HttpResponse
resp = http.PostUrlEncoded("https://api.ibanity.com/isabel-connect/oauth2/token",req)
If (http.LastMethodSuccess = False) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

Dim sbResponseBody As New Chilkat.StringBuilder
success = resp.GetBodySb(sbResponseBody)
Dim jResp As New Chilkat.JsonObject
success = jResp.LoadSb(sbResponseBody)
jResp.EmitCompact = False

System.DebugLog("Response Body:")
System.DebugLog(jResp.Emit())

Dim respStatusCode As Int32
respStatusCode = resp.StatusCode
System.DebugLog("Response Status Code = " + Str(respStatusCode))
If (respStatusCode >= 400) Then
    System.DebugLog("Response Header:")
    System.DebugLog(resp.Header)
    System.DebugLog("Failed.")

    Return
End If

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// Notice that we don't get a new refresh token.  The original refresh token is used each time we
// want to refresh.  However, we get a new access token.  This access token is to be used in Isabel API calls
// until we need to refresh again.
// {
//   "token_type": "Bearer",
//   "scope": "cloudconnect",
//   "expires_in": 1799,
//   "access_token": "access_token_1603365408"
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

Dim token_type As String
token_type = jResp.StringOf("token_type")
Dim scope As String
scope = jResp.StringOf("scope")
Dim expires_in As Int32
expires_in = jResp.IntOf("expires_in")
Dim access_token As String
access_token = jResp.StringOf("access_token")

// Save this to a file so we can load in other examples to include the access token in the HTTP request.
success = jResp.WriteFile("qa_data/tokens/isabel_access_token.json")