public void Handle(GenerateThumbnailForPost command)
{
var post = _postService.GetPostById(command.PostId);
if (post == null)
{
return;
}
if (!command.Force && !string.IsNullOrEmpty(post.Thumb))
{
// already created and we aren't trying to for it to be recreated
return;
}
try
{
Image image = null;
try
{
if (post.PostType == PostType.Link)
{
// grab an image from the url of the post
image = _mediaScraper.GetThumbnailForUrl(post.Url);
}
else if (post.PostType == PostType.Text)
{
// this is a text post
// let's see if there are any links in the users post.
var links = _mediaScraper.ExtractLinksFromHtml(post.ContentFormatted);
if (links.Count > 0)
{
}
// TODO
}
if (image != null)
{
// we found an image for the link
_postService.UpdateThumbnailForPost(post.Id, _postThumbnailService.UploadImage(image));
}
}
finally
{
if (image != null)
{
image.Dispose();
}
}
}
catch (Exception ex)
{
_logger.Error("There was an error trying to get a thumbnail for the post " + post.Id, ex);
}
}
public void Can_extract_urls_from_html()
{
// arrange
var html = string.Empty;
html += "<a href=\"http://test1.com\">test1</a>";
html += "<a href=\"\">test2</a>";
html += "<a>test3</a>";
html += "<a href='http://test4.com\'>test4</a>";
html += "<a href='http://test5.com\'></a>";
// act
var urls = _mediaScrapper.ExtractLinksFromHtml(html);
// assert
urls.Count.Should().Be(3);
urls[0].Should().Be("http://test1.com");
urls[1].Should().Be("http://test4.com");
urls[2].Should().Be("http://test5.com");
}
public void Can_extract_urls_from_html()
{
// arrange
var html = string.Empty;
html += "<a href=\"http://test1.com\">test1</a>";
html += "<a href=\"\">test2</a>";
html += "<a>test3</a>";
html += "<a href='http://test4.com\'>test4</a>";
html += "<a href='http://test5.com\'></a>";
// act
var urls = _mediaScrapper.ExtractLinksFromHtml(html);
// assert
Assert.That(urls, Has.Count.EqualTo(3));
Assert.That(urls[0], Is.EqualTo("http://test1.com"));
Assert.That(urls[1], Is.EqualTo("http://test4.com"));
Assert.That(urls[2], Is.EqualTo("http://test5.com"));
}