public async Task <int> Handle(AddRssSourseCommand request, CancellationToken cancellationToken)
{
var rssSourseDto = new RssSourceDto
{
Id = request.Id,
Name = request.Name,
Url = request.Url,
DateOfReceiving = DateTime.Now
};
var rssSourseEnt = _mapper.Map <RssSource>(rssSourseDto);
await _dbContext.RssSource.AddAsync(rssSourseEnt, cancellationToken);
return(await _dbContext.SaveChangesAsync(cancellationToken));//метод возвращает количество измененных записей
}
public async Task <IEnumerable <NewsDto> > GetNewsFromRssSource(RssSourceDto rssSource)
{
var newsList = new List <NewsDto>();
using (var reader = XmlReader.Create(rssSource.Url))
{
var feed = SyndicationFeed.Load(reader);
reader.Close();
var feedUrls = feed.Items.Select(i => i.Id).ToList();
var currentNewsUrls = await _unitOfWork.News
.FindBy(news => news.RssSourceId == rssSource.Id)
.ToListAsync();
Log.Information($"News count in DB: {currentNewsUrls.Count}");
foreach (var feedItem in feed.Items)
{
if (!currentNewsUrls.Any(news => news.Url.Equals(feedItem.Id)))
{
var newsDto = new NewsDto()
{
Id = Guid.NewGuid(),
RssSourceId = rssSource.Id,
Url = feedItem.Id,
Title = feedItem.Title.Text,
Summary = SyndicationHelper.GetSyndicationItemSummary(feedItem),
NewsDate = feedItem.PublishDate.UtcDateTime,
DateCollect = DateTime.UtcNow
};
newsList.Add(newsDto);
}
}
}
return(newsList);
}
public async Task <IEnumerable <NewsDto> > GetNewsFromRssSource(RssSourceDto rssSource)
{
throw new NotImplementedException();
}
