(AutoIt) SharePoint -- Download Newer Files

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Demonstrates how to download all files from a SharePoint folder that are newer than the local files.

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

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

; -------------------------------------------------------------------------
; The following comments apply to SharePoint Windows classic authentication.
; -------------------------------------------------------------------------
; For example, imagine our SharePoint endpoint is https://xyzoffice.mycompany.com/
; The SHAREPOINT_NTLM_DOMAIN would be "mycompany.com"
; The SHAREPOINT_HTTPS_DOMAIN would be "xyzoffice.mycompany.com"
; Also, the SHAREPOINT_USERNAME would be just the name, not a full email address.
; for example, "chilkat" instead of "chilkat@mycompany.com"

$oHttp = ObjCreate("Chilkat.Http")

; If SharePoint Windows classic authentication is used, then set the 
; Login, Password, LoginDomain, and NtlmAuth properties.
$oHttp.Login = "SHAREPOINT_USERNAME"
$oHttp.Password = "SHAREPOINT_PASSWORD"
$oHttp.LoginDomain = "SHAREPOINT_NTLM_DOMAIN"
$oHttp.NtlmAuth = True

; -------------------------------------------------------------------------
; The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
; If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
; establish the cookie as shown at SharePoint Online Authentication
; -------------------------------------------------------------------------

; First we'll download a list of all the files in the /Documents folder.
; This provides the names and last-modified date/times of the files located
; on the SharePoint server.
$oHttp.Accept = "application/json;odata=verbose"
$oHttp.AcceptCharset = "utf-8"

$oSbJson = ObjCreate("Chilkat.StringBuilder")
Local $bSuccess = $oHttp.QuickGetSb("https://SHAREPOINT_HTTPS_DOMAIN/_api/web/GetFolderByServerRelativeUrl('/Documents')/Files",$oSbJson)
If ($bSuccess <> True) Then
    ConsoleWrite($oHttp.LastErrorText & @CRLF)
    Exit
EndIf

; Before proceeding, make sure the local directory where we'll be downloading files exists.
$oFac = ObjCreate("Chilkat.FileAccess")
$oFac.DirEnsureExists("qa_output/sharepoint/Documents")

; OK.. load the JSON and iterate over each file
$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.LoadSb($oSbJson)

Local $iNumFiles = $oJson.SizeOfArray("d.results")
ConsoleWrite("Number of Files in the SharePoint /Documents folder = " & $iNumFiles & @CRLF)

$oLastModRemote = ObjCreate("Chilkat.CkDateTime")
Local $oLastModLocal

$oLocalPath = ObjCreate("Chilkat.StringBuilder")
$oFileUrl = ObjCreate("Chilkat.StringBuilder")

Local $i = 0
While $i < $iNumFiles
    $oJson.I = $i

Local $sFilename = $oJson.StringOf("d.results[i].Name")
Local $sLastModified = $oJson.StringOf("d.results[i].TimeLastModified")

    ConsoleWrite(($i + 1) & ": " & $sFilename & " (" & $sLastModified & ")" & @CRLF)

    $oLastModRemote.SetFromTimestamp($sLastModified)

Local $bDownload = False
    ; Check to see if the local file exists.  If not, then download.
    $oLocalPath.SetString("qa_output/sharepoint/Documents/")
    $oLocalPath.Append($sFilename)
    If ($oFac.FileExists($oLocalPath.GetAsString()) <> True) Then
        ConsoleWrite("This file does not exist locally." & @CRLF)
        $bDownload = True
    Else
        ; Get the local file's date time and compare with the remote file date/time.
        $oLastModLocal = $oFac.GetLastModified($oLocalPath.GetAsString())
        If ($oFac.LastMethodSuccess = True) Then
            ; Get the difference in seconds between the local and remote last-modified times.
            ; if the return value is negative, then the caller's time is 
            ; older than the argument.  (in this case, a negative return value means
            ; the local file is older than the remote file.

            ; Note: The DiffSeconds method was found to be missing in the Chilkat .NET build
            ; (and possibly in other builds). It will be present in the v9.5.0.67 release and later.
Local $iNumSeconds = $oLastModLocal.DiffSeconds($oLastModRemote)
            If ($iNumSeconds < 0) Then
                ConsoleWrite("The local file is older than the remote file." & @CRLF)
                $bDownload = True
            EndIf

        Else
            ConsoleWrite("Unable to get the local file's last-modified date/time." & @CRLF)
            ConsoleWrite($oFac.LastErrorText & @CRLF)
        EndIf

    EndIf

    If ($bDownload = True) Then
        $oFileUrl.SetString("https://SHAREPOINT_HTTPS_DOMAIN/_api/web/GetFolderByServerRelativeUrl('/Documents')/Files('")
        $oFileUrl.Append($sFilename)
        $oFileUrl.Append("')/$value")

        ConsoleWrite("Downloading " & $sFilename & @CRLF)

        $bSuccess = $oHttp.Download($oFileUrl.GetAsString(),$oLocalPath.GetAsString())
        If ($bSuccess <> True) Then
            ConsoleWrite($oHttp.LastErrorText & @CRLF)
            Exit
        EndIf

        ; Set the local file's last-modified date/time to that of the server's.
        $oFac.SetLastModified($oLocalPath.GetAsString(),$oLastModRemote)

    EndIf

    $i = $i + 1
Wend

ConsoleWrite("All finished." & @CRLF)