(DataFlex) Create a File in a Folder

Creates (uploads) a file to be located in a particular folder.

See Google Drive Files: create for more details.

Also See Google Drive Multipart Upload for more details.

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

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Variant vGAuth
    Handle hoGAuth
    Handle hoRest
    Boolean iBAutoReconnect
    Handle hoJson
    Variant vParents
    Handle hoParents
    String sFolderId
    String sFileContents
    String sJsonResponse
    String sTemp1
    Integer iTemp1
    Boolean bTemp1

    Move True To iSuccess

    // 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 
    // Google Drive scope.

    Get Create (RefClass(cComChilkatAuthGoogle)) To hoGAuth
    If (Not(IsComObjectCreated(hoGAuth))) Begin
        Send CreateComObject of hoGAuth
    End
    Set ComAccessToken Of hoGAuth To "GOOGLE-DRIVE-ACCESS-TOKEN"

    Get Create (RefClass(cComChilkatRest)) To hoRest
    If (Not(IsComObjectCreated(hoRest))) Begin
        Send CreateComObject of hoRest
    End

    // Connect using TLS.
    Move True To iBAutoReconnect
    Get ComConnect Of hoRest "www.googleapis.com" 443 True iBAutoReconnect To iSuccess

    // Provide the authentication credentials (i.e. the access token)
    Get pvComObject of hoGAuth to vGAuth
    Get ComSetAuthGoogle Of hoRest vGAuth To iSuccess

    // -------------------------------------------------------------------------
    // A multipart upload to Google Drive needs a multipart/related Content-Type
    Get ComAddHeader Of hoRest "Content-Type" "multipart/related" To iSuccess

    // Specify each part of the request.

    // The 1st part is JSON with information about the file.
    Set ComPartSelector Of hoRest To "1"
    Get ComAddHeader Of hoRest "Content-Type" "application/json; charset=UTF-8" To iSuccess

    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get ComAppendString Of hoJson "name" "testHello.txt" To iSuccess
    Get ComAppendString Of hoJson "description" "A simple file that says Hello World." To iSuccess
    Get ComAppendString Of hoJson "mimeType" "text/plain" To iSuccess

    // To place the file in a folder, we must add a parents[] array to the JSON
    // and list the folder id's.  It's possible for a file to be in multiple folders at once
    // if it has more than one parent.  If no parents are specified, then the file is created
    // in the My Drive folder.  
    // Note: We'll assume we already have the id if the folder.  It is the id's that are specified here,
    // not the folder names.
    Get ComAppendArray Of hoJson "parents" To vParents
    If (IsComObject(vParents)) Begin
        Get Create (RefClass(cComChilkatJsonArray)) To hoParents
        Set pvComObject Of hoParents To vParents
    End
    Move "0B53Q6OSTWYolY2tPU1BnYW02T2c" To sFolderId
    Get ComAddStringAt Of hoParents -1 sFolderId To iSuccess
    Send Destroy of hoParents

    Get ComEmit Of hoJson To sTemp1
    Get ComSetMultipartBodyString Of hoRest sTemp1 To iSuccess

    // The 2nd part is the file content, which will contain "Hello World!"
    Set ComPartSelector Of hoRest To "2"
    Get ComAddHeader Of hoRest "Content-Type" "text/plain" To iSuccess

    Move "Hello World!" To sFileContents
    Get ComSetMultipartBodyString Of hoRest sFileContents To iSuccess

    Get ComFullRequestMultipart Of hoRest "POST" "/upload/drive/v3/files?uploadType=multipart" To sJsonResponse
    Get ComLastMethodSuccess Of hoRest To bTemp1
    If (bTemp1 <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // A successful response will have a status code equal to 200.
    Get ComResponseStatusCode Of hoRest To iTemp1
    If (iTemp1 <> 200) Begin
        Get ComResponseStatusCode Of hoRest To iTemp1
        Showln "response status code = " iTemp1
        Get ComResponseStatusText Of hoRest To sTemp1
        Showln "response status text = " sTemp1
        Get ComResponseHeader Of hoRest To sTemp1
        Showln "response header: " sTemp1
        Showln "response JSON: " sJsonResponse
        Procedure_Return
    End

    // Show the JSON response.
    Get ComLoad Of hoJson sJsonResponse To iSuccess

    // Show the full JSON response.
    Set ComEmitCompact Of hoJson To False
    Get ComEmit Of hoJson To sTemp1
    Showln sTemp1

    // A successful response looks like this:
    // {
    //   "kind": "drive#file",
    //   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    //   "name": "Untitled",
    //   "mimeType": "text/plain"
    // }

    // Get the fileId:
    Get ComStringOf Of hoJson "id" To sTemp1
    Showln "fileId: " sTemp1


End_Procedure