In Sitecore 7.5 how to programmatically create media items with language versioning?

Question

I want to be able to create/update media items in code and also use language versioning. Here are more specifics. I have a Product content item. When that item is saved I want to be able to generate a PDF version of that item and save it to the media library. If the PDF version already exists in the media library I need to be able to update it. In addition this is a multi-language site. So if someone saves the French version of the Product content item I need to be able to generate the French version of the PDF and only save/update the French version of the associated PDF in the media library - not touch any of the other language versions of the PDF. I can't seem to figure out how to do this. The code that I have currently does the following: if I save the English version of the Product then it creates and English version of the PDF. But then if I save the French version of the Product, it creates a French version of the PDF and removes the English version of the PDF.

Anyone know how to do this?

    public static Item AddMediaItem(byte[] fileBuffer, string fullMediaPath, string fileNameWithExtension, string title, Language language)
    {
        try
        {
            var db = Sitecore.Configuration.Factory.GetDatabase("master");
            var options = new MediaCreatorOptions();
            options.FileBased = false;
            options.IncludeExtensionInItemName = false;
            options.KeepExisting = false;
            options.Versioned = true;
            options.Destination = fullMediaPath;
            options.Database = db;
            options.Language = language;

            var creator = new MediaCreator();
            var fileStream = new MemoryStream(fileBuffer);

            var pdfItem = db.GetItem(fullMediaPath, language);
            if (pdfItem != null)
            {
                var updatedItem = creator.AttachStreamToMediaItem(fileStream, fullMediaPath, fileNameWithExtension,
                    options);
                updatedItem.Editing.BeginEdit();
                updatedItem.Fields["Title"].Value = title;
                updatedItem.Editing.EndEdit();
                return updatedItem;
            }
            else
            {
                //Create a new item
                var newItem = creator.CreateFromStream(fileStream, fileNameWithExtension, options);
                newItem.Editing.BeginEdit();
                newItem.Fields["Title"].Value = title;
                newItem.Editing.EndEdit();
                return newItem;
            }
        }
        catch (Exception ex)
        {
            return null;
        }
    }

Answer 1

Thanks to @JanBluemink for pointing me in the right direction. I found the right approach in the following article: Sitecore.Resources.Media.MediaCreator deletes versions of media. I just had to modify the code to use MediaManager instead of MediaCreator when updating.

    public static Item AddMediaItem(byte[] fileBuffer, string fullMediaPath, string fileNameWithExtension, string title, Language language)
    {
        try
        {
            var db = Sitecore.Configuration.Factory.GetDatabase("master");
            var options = new MediaCreatorOptions();
            options.FileBased = false;
            options.IncludeExtensionInItemName = false;
            options.KeepExisting = false;
            options.Versioned = true;
            options.Destination = fullMediaPath;
            options.Database = db;
            options.Language = language;

            var creator = new MediaCreator();
            var fileStream = new MemoryStream(fileBuffer);

            var pdfItem = db.GetItem(fullMediaPath, language);
            if (pdfItem != null)
            {
                var mediaItem = new MediaItem(pdfItem);
                var media = MediaManager.GetMedia(mediaItem);
                media.SetStream(fileStream, "pdf");

                pdfItem.Editing.BeginEdit();
                pdfItem.Fields["Title"].Value = title;
                pdfItem.Editing.EndEdit();
                return pdfItem;
            }
            else
            {
                //Create a new item
                var newItem = creator.CreateFromStream(fileStream, fileNameWithExtension, options);
                newItem.Editing.BeginEdit();
                newItem.Fields["Title"].Value = title;
                newItem.Editing.EndEdit();
                return newItem;
            }
        }
        catch (Exception ex)
        {
            return null;
        }
    }

Answer 2

I had to add couple of more lines for updating media item stored in File System with versioning.

if (mediaItem.FileBased)
        {
            string uniqueFilename = FileUtil.GetUniqueFilename(FileUtil.MakePath(Settings.Media.FileFolder, MediaManager.Creator.GetMediaStorageFolder(mediaItem.ID, fileshortname)));
            using (new Sitecore.SecurityModel.SecurityDisabler())
            {
                mediaItem.BeginEdit();
                mediaItem.FilePath = uniqueFilename;
                mediaItem.EndEdit();
            }
        }
        Media media = MediaManager.GetMedia(mediaItem);
        using (FileStream stream = new FileStream(fileName, FileMode.Open))
        {
            media.SetStream(stream, FileUtil.GetExtension(fileshortname));
        }`