(Xojo Plugin) Group: Refresh OAuth2 Access Token

Refreshes an expired or non-expired OAuth2 access token for the Microsoft Group REST API.

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

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

Dim json As New Chilkat.JsonObject
Dim success As Boolean
success = json.LoadFile("qa_data/tokens/msGraphGroup.json")
If (success <> True) Then
    Return
End If

Dim req As New Chilkat.HttpRequest
req.AddParam "grant_type","refresh_token"
req.AddParam "redirect_uri","http://localhost:3017/"
req.AddParam "client_id","MICROSOFT-GRAPH-CLIENT-ID"
req.AddParam "client_secret","MICROSOFT-GRAPH-CLIENT-SECRET"
req.AddParam "refresh_token",json.StringOf("refresh_token")
req.AddParam "scope","openid profile offline_access user.readwrite group.readwrite.all files.readwrite"

Dim http As New Chilkat.Http

Dim resp As Chilkat.HttpResponse
resp = http.PostUrlEncoded("https://login.microsoftonline.com/common/oauth2/v2.0/token",req)
If (http.LastMethodSuccess <> True) Then
    System.DebugLog(http.LastErrorText)
    Return
End If

// Load the JSON response.
success = json.Load(resp.BodyStr)
json.EmitCompact = False

// Show the JSON response.
System.DebugLog(json.Emit())

System.DebugLog("Response status code: " + Str(resp.StatusCode))

// If the response status code is not 200, then it's an error.
If (resp.StatusCode <> 200) Then
    Return
End If

// Save the refreshed access token JSON to a file for future requests.
Dim fac As New Chilkat.FileAccess
success = fac.WriteEntireTextFile("qa_data/tokens/msGraphGroup.json",json.Emit(),"utf-8",False)

System.DebugLog("Success.")