(AutoIt) Yahoo Mail Refresh OAuth2 Access Token

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Demonstrates how to refresh an OAuth2 Yahoo Mail access token.

For more information, see https://developer.yahoo.com/oauth2/guide/

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

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

; It is assumed we previously obtained an OAuth2 access token.
; This example loads the JSON access token file 
; saved by this example: Get Yahoo Mail OAuth2 Access Token

$oJsonToken = ObjCreate("Chilkat.JsonObject")
Local $bSuccess = $oJsonToken.LoadFile("qa_data/tokens/yahooMail.json")
If ($bSuccess <> True) Then
    ConsoleWrite("Failed to load googleSheets.json" & @CRLF)
    Exit
EndIf

; The access token JSON looks like this:

; {
;   "access_token": "kCVQdnOdul...LHucA--",
;   "refresh_token": "AIenVWETSo0jklFBVkPS8vVm8E.Dj9ToRG.xDbDYmZ55WIs5t6CZhDkD",
;   "expires_in": 3600,
;   "token_type": "bearer",
;   "xoauth_yahoo_guid": "HGDQCVF6JB4YDOWHITPJFBHCWA"
; }

$oOauth2 = ObjCreate("Chilkat.OAuth2")

; See Step 5 at https://developer.yahoo.com/oauth2/guide/flows_authcode/
$oOauth2.TokenEndpoint = "https://api.login.yahoo.com/oauth2/get_token"

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

; Get the "refresh_token"
$oOauth2.RefreshToken = $oJsonToken.StringOf("refresh_token")

; Send the HTTP POST to refresh the access token..
$bSuccess = $oOauth2.RefreshAccessToken()
If ($bSuccess <> True) Then
    ConsoleWrite($oOauth2.LastErrorText & @CRLF)
    Exit
EndIf

; The response contains a new access token, but we must keep
; our existing refresh token for when we need to refresh again in the future.
$oJsonToken.UpdateString("access_token",$oOauth2.AccessToken)

; Save the new JSON access token response to a file.
$oSbJson = ObjCreate("Chilkat.StringBuilder")
$oJsonToken.EmitCompact = False
$oJsonToken.EmitSb($oSbJson)
$oSbJson.WriteFile("qa_data/tokens/yahooMail.json","utf-8",False)

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