private IDocument GenerateFeed(FeedType feedType, Feed feed, ContextConfig path, IExecutionContext context)
{
// Get the output path
FilePath outputPath = path?.Invoke<FilePath>(context);
if (outputPath == null)
{
return null;
}
if (!outputPath.IsRelative)
{
throw new ArgumentException("The feed output path must be relative");
}
// Generate the feed and document
MemoryStream stream = new MemoryStream();
FeedSerializer.SerializeXml(feedType, feed, stream);
stream.Position = 0;
return context.GetDocument(stream, new MetadataItems
{
new MetadataItem(Keys.RelativeFilePath, outputPath),
new MetadataItem(Keys.WritePath, outputPath)
});
}
public IEnumerable<IDocument> Execute(IReadOnlyList<IDocument> inputs, IExecutionContext context)
{
// Get the feed
Feed feed = new Feed
{
ID = _feedId?.Invoke<Uri>(context),
Title = _feedTitle?.Invoke<string>(context),
Description = _feedDescription?.Invoke<string>(context),
Author = _feedAuthor?.Invoke<string>(context),
Published = _feedPublished?.Invoke<DateTime?>(context),
Updated = _feedUpdated?.Invoke<DateTime?>(context),
Link = _feedLink?.Invoke<Uri>(context),
ImageLink = _feedImageLink?.Invoke<Uri>(context),
Copyright = _feedCopyright?.Invoke<string>(context)
};
// Add items
foreach (IDocument input in inputs.Take(_maximumItems))
{
feed.Items.Add(new FeedItem
{
ID = _itemId?.Invoke<Uri>(input, context),
Title = _itemTitle?.Invoke<string>(input, context),
Description = _itemDescription?.Invoke<string>(input, context),
Author = _itemAuthor?.Invoke<string>(input, context),
Published = _itemPublished?.Invoke<DateTime?>(input, context),
Updated = _itemUpdated?.Invoke<DateTime?>(input, context),
Link = _itemLink?.Invoke<Uri>(input, context),
ImageLink = _itemImageLink?.Invoke<Uri>(input, context),
Content = _itemContent?.Invoke<string>(input, context),
ThreadLink = _itemThreadLink?.Invoke<Uri>(input, context),
ThreadCount = _itemThreadCount?.Invoke<int?>(input, context),
ThreadUpdated = _itemThreadUpdated?.Invoke<DateTime?>(input, context)
});
}
// Generate the feeds
return new[]
{
GenerateFeed(FeedType.Rss, feed, _rssPath, context),
GenerateFeed(FeedType.Atom, feed, _atomPath, context),
GenerateFeed(FeedType.Rdf, feed, _rdfPath, context)
}.Where(x => x != null);
}