(AutoIt) Amazon SP-API Request an LWA access token

See more Amazon SP-API Examples

Request an LWA access token, make a secure HTTP POST to the LWA authentication server (https://api.amazon.com/auth/o2/token)

For more information, see https://developer-docs.amazon.com/sp-api/docs/connecting-to-the-selling-partner-api

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

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

$oHttp = ObjCreate("Chilkat.Http")

; Implements the following CURL command:

; curl -X POST https://example.com/auth/o2/token \
;   -H "Host: api.amazon.com" \
;   -H "Content-Type: application/x-www-form-urlencoded;charset=UTF-8" \
;   -d "grant_type=refresh_token" \
;   -d "refresh_token=Aztr|..." \
;   -d "client_id=foodev" \
;   -d "client_secret=Y76SDl2F"

; Use the following online tool to generate HTTP code from a CURL command
; Convert a cURL Command to HTTP Source Code

$oReq = ObjCreate("Chilkat.HttpRequest")
$oReq.AddParam "grant_type","refresh_token"
$oReq.AddParam "refresh_token","Aztr|..."
$oReq.AddParam "client_id","foodev"
$oReq.AddParam "client_secret","Y76SDl2F"

$oReq.AddHeader "Host","api.amazon.com"

Local $oResp = $oHttp.PostUrlEncoded("https://api.amazon.com/auth/o2/token",$oReq)
If ($oHttp.LastMethodSuccess = False) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

Local $iStatusCode = $oResp.StatusCode
ConsoleWrite("Status Code = " & $iStatusCode & @CRLF)

$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.Load($oResp.BodyStr)

$oJson.EmitCompact = False
ConsoleWrite($oJson.Emit() & @CRLF)

If ($iStatusCode <> 200) Then
    ConsoleWrite("Failed." & @CRLF)
    Exit
EndIf

; Success returns this JSON:

; {
;   "access_token": "Atza|...",
;   "refresh_token": "Atzr|...",
;   "token_type": "bearer",
;   "expires_in": 3600
; }

; Save the JSON token to a file for use in subsequent calls.
; (this example is passing a relative file path.  You don't need to save to a file
; if, for example, you keep the access token in-memory for subsequent use...)
Local $bSuccess = $oJson.WriteFile("qa_data/tokens/sp_api_lwa_token.json")

ConsoleWrite("access_token: " & $oJson.StringOf("access_token") & @CRLF)
ConsoleWrite("Success." & @CRLF)