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Vonage UC Extend OAuth2

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Get an OAuth2 access token for a desktop application for Vonage.

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Local $bSuccess = False

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

$oOauth2 = ObjCreate("Chilkat.OAuth2")

; This should be the port in the localhost callback URL for your app.  
; The callback URL would look like "http://localhost:3800/" if the port number is 3017.
$oOauth2.ListenPort = 3800

$oOauth2.AuthorizationEndpoint = "https://api.vonage.com/authorize"
$oOauth2.TokenEndpoint = "https://api.vonage.com/token"

; Replace these with actual values.
$oOauth2.ClientId = "CLIENT_ID"
$oOauth2.ClientSecret = "CLIENT_SECRET"
$oOauth2.CodeChallenge = False

$oOauth2.Scope = "openid"

; Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
Local $sUrl = $oOauth2.StartAuth()
If ($oOauth2.LastMethodSuccess <> True) Then
    ConsoleWrite($oOauth2.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite("url = " & $sUrl & @CRLF)

; Launch the default browser on the system and navigate to the url.
; The LaunchBrowser method was added in Chilkat v10.1.2.
$bSuccess = $oOauth2.LaunchBrowser($sUrl)
If ($bSuccess = False) Then
    ConsoleWrite($oOauth2.LastErrorText & @CRLF)
    Exit
EndIf

; Wait for the user to approve or deny authorization in the browser.
Local $iNumMsWaited = 0
While ($iNumMsWaited < 90000) And ($oOauth2.AuthFlowState < 3)
    $oOauth2.SleepMs 100
    $iNumMsWaited = $iNumMsWaited + 100
Wend

; If the browser does not respond within the specified time, AuthFlowState will be:
; 
; 1: Waiting for Redirect - The OAuth2 background thread is waiting for the browser's redirect request.
; 2: Waiting for Final Response - The thread is awaiting the final access token response.
; In either case, cancel the background task initiated by StartAuth.

If ($oOauth2.AuthFlowState < 3) Then
    $oOauth2.Cancel()
    ConsoleWrite("No response from the browser!" & @CRLF)
    Exit
EndIf

; Check AuthFlowState to determine if authorization was granted, denied, or failed:
; 
; 3: Success - OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
; 4: Access Denied - OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
; 5: Failure - OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

If ($oOauth2.AuthFlowState = 5) Then
    ConsoleWrite("OAuth2 failed to complete." & @CRLF)
    ConsoleWrite($oOauth2.FailureInfo & @CRLF)
    Exit
EndIf

If ($oOauth2.AuthFlowState = 4) Then
    ConsoleWrite("OAuth2 authorization was denied." & @CRLF)
    ConsoleWrite($oOauth2.AccessTokenResponse & @CRLF)
    Exit
EndIf

If ($oOauth2.AuthFlowState <> 3) Then
    ConsoleWrite("Unexpected AuthFlowState:" & $oOauth2.AuthFlowState & @CRLF)
    Exit
EndIf

ConsoleWrite("OAuth2 authorization granted!" & @CRLF)
ConsoleWrite("Access Token = " & $oOauth2.AccessToken & @CRLF)

; Get the full JSON response:
$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.Load($oOauth2.AccessTokenResponse)
$oJson.EmitCompact = False
ConsoleWrite($oJson.Emit() & @CRLF)

; The JSON response looks like this:

; {
;   "access_token": "XXXXXXXX-XXX-XXXX-XXXX-XXXXXXXXXXXX",
;   "refresh_token": "XXXXXXXX-XXX-XXXX-XXXX-XXXXXXXXXXXX",
;   "scope": "openid",
;   "id_token": "eyJ4NXQiOiJNem ... hA9tbDCiQRhdI4T0",
;   "token_type": "Bearer",
;   "expires_in": 3600
; }

; Save the JSON to a file for future requests.
$oFac = ObjCreate("Chilkat.FileAccess")
$oFac.WriteEntireTextFile("qa_data/tokens/vonage_uc_extend.json",$oJson.Emit(),"utf-8",False)