(PureBasic) 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 PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkStringBuilder.pb"
IncludeFile "CkAuthGoogle.pb"
IncludeFile "CkRest.pb"
IncludeFile "CkJsonObject.pb"
IncludeFile "CkStringArray.pb"

Procedure ChilkatExample()

    success.i = 1

    ; 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.

    gAuth.i = CkAuthGoogle::ckCreate()
    If gAuth.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    CkAuthGoogle::setCkAccessToken(gAuth, "GOOGLE-DRIVE-ACCESS-TOKEN")

    rest.i = CkRest::ckCreate()
    If rest.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    ; Connect using TLS.
    bAutoReconnect.i = 1
    success = CkRest::ckConnect(rest,"www.googleapis.com",443,1,bAutoReconnect)

    ; Provide the authentication credentials (i.e. the access token)
    CkRest::ckSetAuthGoogle(rest,gAuth)

    ; Get 10 results per page for testing.  (The default page size is 100, with a max of 1000.
    CkRest::ckAddQueryParam(rest,"pageSize","10")

    json.i = CkJsonObject::ckCreate()
    If json.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    i.i
    numFiles.i

    ; Send the request for the 1st page.
    jsonResponse.s = CkRest::ckFullRequestNoBody(rest,"GET","/drive/v3/files")

    pageNumber.i = 1
    pageToken.s
    bContinueLoop.i = CkRest::ckLastMethodSuccess(rest) AND (CkRest::ckResponseStatusCode(rest) = 200)

    fileId.s
    saFileIds.i = CkStringArray::ckCreate()
    If saFileIds.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    While bContinueLoop = 1

        Debug "---- Page " + Str(pageNumber) + " ----"
        CkJsonObject::ckLoad(json,jsonResponse)

        numFiles = CkJsonObject::ckSizeOfArray(json,"files")
        i = 0
        While i < numFiles
            CkJsonObject::setCkI(json, i)
            fileId = CkJsonObject::ckStringOf(json,"files[i].id")
            Debug "name: " + CkJsonObject::ckStringOf(json,"files[i].name")
            Debug "id: " + fileId
            CkStringArray::ckAppend(saFileIds,fileId)
            i = i + 1
        Wend

        ; 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.
        pageToken = CkJsonObject::ckStringOf(json,"nextPageToken")
        bContinueLoop = 0
        bHasMorePages.i = CkJsonObject::ckLastMethodSuccess(json)
        If bHasMorePages = 1
            CkRest::ckClearAllQueryParams(rest)
            CkRest::ckAddQueryParam(rest,"pageSize","10")
            CkRest::ckAddQueryParam(rest,"pageToken",pageToken)
            jsonResponse = CkRest::ckFullRequestNoBody(rest,"GET","/drive/v3/files")
            bContinueLoop = CkRest::ckLastMethodSuccess(rest) AND (CkRest::ckResponseStatusCode(rest) = 200)
            pageNumber = pageNumber + 1
        EndIf

    Wend

    ; Before actually deleting, check for errors...
    If CkRest::ckLastMethodSuccess(rest) <> 1
        Debug CkRest::ckLastErrorText(rest)
        CkAuthGoogle::ckDispose(gAuth)
        CkRest::ckDispose(rest)
        CkJsonObject::ckDispose(json)
        CkStringArray::ckDispose(saFileIds)
        ProcedureReturn
    EndIf

    ; A successful response will have a status code equal to 200.
    If CkRest::ckResponseStatusCode(rest) <> 200
        Debug "response status code = " + Str(CkRest::ckResponseStatusCode(rest))
        Debug "response status text = " + CkRest::ckResponseStatusText(rest)
        Debug "response header: " + CkRest::ckResponseHeader(rest)
        Debug "response JSON: " + jsonResponse
        CkAuthGoogle::ckDispose(gAuth)
        CkRest::ckDispose(rest)
        CkJsonObject::ckDispose(json)
        CkStringArray::ckDispose(saFileIds)
        ProcedureReturn
    EndIf

    ; OK, we have the full list of files.  Delete each..
    sbPath.i = CkStringBuilder::ckCreate()
    If sbPath.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    numFiles = CkStringArray::ckCount(saFileIds)
    i = 0
    While i < numFiles
        fileId = CkStringArray::ckGetString(saFileIds,i)

        CkRest::ckClearAllQueryParams(rest)

        CkStringBuilder::ckClear(sbPath)
        CkStringBuilder::ckAppend(sbPath,"/drive/v3/files/")
        CkStringBuilder::ckAppend(sbPath,fileId)

        jsonResponse = CkRest::ckFullRequestNoBody(rest,"DELETE",CkStringBuilder::ckGetAsString(sbPath))
        If CkRest::ckLastMethodSuccess(rest) <> 1
            Debug CkRest::ckLastErrorText(rest)
            CkAuthGoogle::ckDispose(gAuth)
            CkRest::ckDispose(rest)
            CkJsonObject::ckDispose(json)
            CkStringArray::ckDispose(saFileIds)
            CkStringBuilder::ckDispose(sbPath)
            ProcedureReturn
        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 CkRest::ckResponseStatusCode(rest) <> 204
            Debug "response status code = " + Str(CkRest::ckResponseStatusCode(rest))
            Debug "response status text = " + CkRest::ckResponseStatusText(rest)
            Debug "response header: " + CkRest::ckResponseHeader(rest)
            Debug "response JSON: " + jsonResponse
            CkAuthGoogle::ckDispose(gAuth)
            CkRest::ckDispose(rest)
            CkJsonObject::ckDispose(json)
            CkStringArray::ckDispose(saFileIds)
            CkStringBuilder::ckDispose(sbPath)
            ProcedureReturn
        EndIf

        i = i + 1
        Debug Str(i) + ": Deleted " + fileId
    Wend

    Debug "All Files Deleted."


    CkAuthGoogle::ckDispose(gAuth)
    CkRest::ckDispose(rest)
    CkJsonObject::ckDispose(json)
    CkStringArray::ckDispose(saFileIds)
    CkStringBuilder::ckDispose(sbPath)


    ProcedureReturn
EndProcedure