/// <inheritdoc />
public async Task <IEnumerable <ListingBase> > ParseListingsAsync(string html, CancellationToken ct)
{
return(await Task.Run(() =>
{
var listings = new HashSet <ListingBase>();
var doc = new HtmlDocument();
doc.LoadHtml(html);
try
{
var nodes = doc.DocumentNode.SelectNodes("//ul/li[contains(@class,'result-row')]/p[contains(@class,'result-info')]");
if (nodes != null)
{
foreach (var node in nodes)
{
var listing = new CraigslistListing();
listing.ParseInitialNode(node);
listings.Add(listing);
}
}
}
catch (Exception e)
{
// do something useful here
}
return listings;
},
ct));
}
public static ListingBase ListingFactory(WebSource webSource, HtmlNode node)
{
ListingBase listing;
// ReSharper disable once SwitchStatementMissingSomeCases
switch (webSource)
{
case WebSource.Craigslist:
listing = new CraigslistListing();
break;
case WebSource.Indeed:
listing = new IndeedListing();
break;
case WebSource.Monster:
listing = new MonsterListing();
break;
case WebSource.StackOverflow:
listing = new StackOverflowListing();
break;
case WebSource.Dice:
listing = new DiceListing();
break;
case WebSource.None:
listing = new UnknownListing();
break;
default:
throw new ArgumentOutOfRangeException(nameof(webSource), webSource, null);
}
listing.ParseInitialNode(node);
return(listing);
}