(AutoIt) Download Object from Google Cloud Storage

Demonstrates how to download an object from Google Cloud Storage to a file.

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.

; This example uses a previously obtained access token having permission for the 
; scope "https://www.googleapis.com/auth/cloud-platform"

; In this example, Get Google Cloud Storage OAuth2 Access Token, 
; the service account access token was saved to a text file.  This example fetches the access token from the file..
$oSbToken = ObjCreate("Chilkat.StringBuilder")
$oSbToken.LoadFile("qa_data/tokens/googleCloudStorageAccessToken.txt","utf-8")

; Send a GET equivalent to this curl command.

; curl -X GET \
;     -H "Authorization: Bearer [OAUTH2_TOKEN]" \
;     -o "[SAVE_TO_LOCATION]" \
;     "https://www.googleapis.com/storage/v1/b/[BUCKET_NAME]/o/[OBJECT_NAME]?alt=media"

$oHttp = ObjCreate("Chilkat.Http")

$oHttp.AuthToken = $oSbToken.GetAsString()

; Construct a URL to download an object named "starfish.jpg" from the "chilkat-ocean" bucket.
$oHttp.SetUrlVar("bucket_name","chilkat-ocean")
$oHttp.SetUrlVar("object_name","starfish.jpg")
Local $sUrl = "https://www.googleapis.com/storage/v1/b/{$bucket_name}/o/{$object_name}?alt=media"

; If there is an error response, then we didn't actually download the file data,
; but instead we downloaded an error response..
$oFileData = ObjCreate("Chilkat.BinData")
Local $bSuccess = $oHttp.DownloadBd($sUrl,$oFileData)
If ($bSuccess = False) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

$oSbErrorResponse = ObjCreate("Chilkat.StringBuilder")
Local $iResponseCode = $oHttp.LastStatus
If ($iResponseCode = 401) Then
    ConsoleWrite("If invalid credentials, then it is likely the access token expired." & @CRLF)
    ConsoleWrite("Your app should automatically fetch a new access token and re-try." & @CRLF)
EndIf

If ($iResponseCode <> 200) Then
    ; Get the error response
    $oSbErrorResponse.AppendBd($oFileData,"utf-8",0,0)
    ConsoleWrite("Error response code = " & $iResponseCode & @CRLF)
    ConsoleWrite("Error:" & @CRLF)
    ConsoleWrite($oSbErrorResponse.GetAsString() & @CRLF)
    Exit
EndIf

ConsoleWrite("Success." & @CRLF)

; Save the downloaded data to a file.
$bSuccess = $oFileData.WriteFile("qa_output/starfish.jpg")