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Lianja Examples

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(Lianja) Delete All Files

Permanently deletes all files owned by the user without moving it to the trash.

This example works by first getting a list of all fileIds, and then iterating over the list to delete each file.

See Google Drive Files delete for more information.

Chilkat Lianja Extension Download

Chilkat Lianja Extension

llSuccess = .T.

//  It 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
//  Google Drive scope.

loGAuth = createobject("CkAuthGoogle")
loGAuth.AccessToken = "GOOGLE-DRIVE-ACCESS-TOKEN"

loRest = createobject("CkRest")

//  Connect using TLS.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("www.googleapis.com",443,.T.,llBAutoReconnect)

//  Provide the authentication credentials (i.e. the access token)
loRest.SetAuthGoogle(loGAuth)

//  Get 10 results per page for testing.  (The default page size is 100, with a max of 1000.
loRest.AddQueryParam("pageSize","10")

loJson = createobject("CkJsonObject")

//  Send the request for the 1st page.
lcJsonResponse = loRest.FullRequestNoBody("GET","/drive/v3/files")

lnPageNumber = 1

llBContinueLoop = loRest.LastMethodSuccess and (loRest.ResponseStatusCode = 200)

loSaFileIds = createobject("CkStringArray")

do while llBContinueLoop = .T.

    ? "---- Page " + str(lnPageNumber) + " ----"
    loJson.Load(lcJsonResponse)

    lnNumFiles = loJson.SizeOfArray("files")
    i = 0
    do while i < lnNumFiles
        loJson.I = i
        lcFileId = loJson.StringOf("files[i].id")
        ? "name: " + loJson.StringOf("files[i].name")
        ? "id: " + lcFileId
        loSaFileIds.Append(lcFileId)
        i = i + 1
    enddo

    //  Get the next page of files.
    //  If the "nextPageToken" is present in the JSON response, then use it in the "pageToken" parameter
    //  for the next request.   If no "nextPageToken" was present, then this was the last page of files.
    lcPageToken = loJson.StringOf("nextPageToken")
    llBContinueLoop = .F.
    llBHasMorePages = loJson.LastMethodSuccess
    if (llBHasMorePages = .T.) then
        loRest.ClearAllQueryParams()
        loRest.AddQueryParam("pageSize","10")
        loRest.AddQueryParam("pageToken",lcPageToken)
        lcJsonResponse = loRest.FullRequestNoBody("GET","/drive/v3/files")
        llBContinueLoop = loRest.LastMethodSuccess and (loRest.ResponseStatusCode = 200)
        lnPageNumber = lnPageNumber + 1
    endif

enddo

//  Before actually deleting, check for errors...
if (loRest.LastMethodSuccess <> .T.) then
    ? loRest.LastErrorText
    release loGAuth
    release loRest
    release loJson
    release loSaFileIds
    return
endif

//  A successful response will have a status code equal to 200.
if (loRest.ResponseStatusCode <> 200) then
    ? "response status code = " + str(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response JSON: " + lcJsonResponse
    release loGAuth
    release loRest
    release loJson
    release loSaFileIds
    return
endif

//  OK, we have the full list of files.  Delete each..
loSbPath = createobject("CkStringBuilder")
lnNumFiles = loSaFileIds.Count
i = 0
do while i < lnNumFiles
    lcFileId = loSaFileIds.GetString(i)

    loRest.ClearAllQueryParams()

    loSbPath.Clear()
    loSbPath.Append("/drive/v3/files/")
    loSbPath.Append(lcFileId)

    lcJsonResponse = loRest.FullRequestNoBody("DELETE",loSbPath.GetAsString())
    if (loRest.LastMethodSuccess <> .T.) then
        ? loRest.LastErrorText
        release loGAuth
        release loRest
        release loJson
        release loSaFileIds
        release loSbPath
        return
    endif

    //  A successful response will have a status code equal to 204 and the response body is empty.
    //  (If not successful, then there should be a JSON response body with information..)
    if (loRest.ResponseStatusCode <> 204) then
        ? "response status code = " + str(loRest.ResponseStatusCode)
        ? "response status text = " + loRest.ResponseStatusText
        ? "response header: " + loRest.ResponseHeader
        ? "response JSON: " + lcJsonResponse
        release loGAuth
        release loRest
        release loJson
        release loSaFileIds
        release loSbPath
        return
    endif

    i = i + 1
    ? str(i) + ": Deleted " + lcFileId
enddo

? "All Files Deleted."


release loGAuth
release loRest
release loJson
release loSaFileIds
release loSbPath

 

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