private void SaveDocument()
{
DocumentSaver.Save(Document, Filename);
Document.Manipulator.ResetUndoStack();
MessageBus.Publish(new DocumentSavedEvent());
}
/// <summary>
/// Creates an epub from the given urls.
/// </summary>
/// <remarks>
/// This method makes use of a record created for each html that is given by a url.
/// The records contain information from the html needed to create the various files which
/// constitute the epub format. An immutable record is created initially so the data collected can be used
/// accross various parts of the program. For example, the record contains a mapping (src map) for each image.
/// This maps the current src of the image to a new local one - this is then used to change the sources of the
/// html images to a local directory and also to download the images to the relevant local directory.
/// </remarks>
/// <param name="urls"></param>
/// <param name="rootDirectory">Path in which the book will be created</param>
/// <param name="bookTitle">Name of the book</param>
/// <param name="guid">Unique identifier for the folder</param>
/// <returns></returns>
public async Task FromAsync(IEnumerable <string> urls, string rootDirectory, string bookTitle, Guid guid)
{
var htmlDocs = _htmlInput.GetHtmlDocumentsFromAsync(urls, new HtmlWeb());
var directoryPaths = GetDirectoryContext(rootDirectory, guid);
var createDirectories = _epubOutput.CreateDirectoriesAsync(directoryPaths);
var wikiPageRecords =
(await htmlDocs).Select(doc => _getRecords.From(doc, "image_repo")).ToList();
var downloadImages =
Task.WhenAll(wikiPageRecords.SelectMany(record => _epubOutput.DownloadImages(record, directoryPaths)));
var createEpubDocuments = Task.WhenAll(_getEpubDocs.From(wikiPageRecords, bookTitle, directoryPaths));
// Save the produced files to relevant directory and compress them
await createDirectories;
var saveDocuments = DocumentSaver.Save(await createEpubDocuments);
var createMimeType = _epubOutput.CreateMimeFile(directoryPaths);
Task.WaitAll(saveDocuments, createMimeType, downloadImages);
await _epubOutput.ZipFiles(directoryPaths, guid);
}