/// <summary>
/// Fetch the epub file for the given book and write it to the standard RoseGarden/Downloads folder.
/// If desired, fetch the image file and also write it to the standard RoseGarden/Downloads folder.
/// Also write the catalog entry as a single-entry OPDS catalog file.
/// </summary>
private void FetchBook(XmlElement entry)
{
var pathEpub = ComputeEpubPathFromEntryTitle(entry);
var pathImage = Path.ChangeExtension(pathEpub, "jpg");
var pathOpds = Path.ChangeExtension(pathEpub, "opds");
var obsolete = false;
if (File.Exists(pathOpds))
{
obsolete = IsExistingDownloadObsolete(entry, pathOpds);
}
if (!File.Exists(pathEpub) || !File.Exists(pathOpds) || obsolete)
{
_opdsClient.DownloadBook(entry, "epub", _feedTitle, pathEpub);
if (_options.DownloadImage)
{
_opdsClient.DownloadImage(entry, pathImage);
}
_opdsClient.WriteCatalogEntryFile(_rootCatalog, entry, pathOpds);
}
else
{
Console.WriteLine("INFO: skipping download of \"{0}\" because we apparently already have it.", Path.GetFileName(pathEpub));
}
}
private int FetchAndSaveBook()
{
var catalog = (String.IsNullOrWhiteSpace(_options.LanguageName) && String.IsNullOrWhiteSpace(_options.Publisher)) ? _rootCatalog : _filteredCatalog;
var entries = catalog.DocumentElement.SelectNodes($"/a:feed/a:entry/a:title[text()='{_options.BookTitle}']", _nsmgr);
if (entries.Count == 0)
{
Console.WriteLine("WARNING: Could not find a book with the title \"{0}\"", _options.BookTitle);
return(2);
}
XmlElement bookEntry = null;
if (entries.Count > 1 && !String.IsNullOrWhiteSpace(_options.Author))
{
foreach (var entry in entries.Cast <XmlElement>())
{
var parent = entry.ParentNode;
var author = parent.SelectSingleNode($"./a:author/a:name[text()='{_options.Author}'");
if (author != null)
{
bookEntry = parent as XmlElement;
break;
}
}
if (bookEntry == null)
{
Console.WriteLine("WARNING: Could not find a book written by {0} with the title \"{1}\"", _options.Author, _options.BookTitle);
return(2);
}
}
else
{
bookEntry = entries[0].ParentNode as XmlElement;
}
var ret = DownloadBook(bookEntry, "epub");
if (ret != 0)
{
return(ret);
}
if (_options.DownloadPDF)
{
ret = DownloadBook(bookEntry, "pdf");
if (ret != 0)
{
return(ret);
}
}
if (_options.DownloadThumbnail)
{
// The actual returned file may well be jpeg even if advertised as image/png, so assume jpeg until we
// see the data.
string path;
if (String.IsNullOrEmpty(_options.OutputFile))
{
path = Path.Combine(OpdsClient.DownloadFolder, Program.SanitizeNameForFileSystem(_options.BookTitle) + ".thumb.jpg");
}
else
{
path = Path.ChangeExtension(_options.OutputFile, "thumb.jpg");
}
ret = _opdsClient.DownloadThumbnail(bookEntry, path);
if (ret != 0)
{
return(ret);
}
}
if (_options.DownloadImage)
{
// The actual returned file may well be jpeg even if advertised as image/png, so assume jpeg until we
// see the data.
string path;
if (String.IsNullOrEmpty(_options.OutputFile))
{
path = Path.Combine(OpdsClient.DownloadFolder, Program.SanitizeNameForFileSystem(_options.BookTitle) + ".jpg");
}
else
{
path = Path.ChangeExtension(_options.OutputFile, "jpg");
}
ret = _opdsClient.DownloadImage(bookEntry, path);
if (ret != 0)
{
return(ret);
}
}
WriteCatalogEntryFile(bookEntry);
return(ret);
}