public async Task <IResult <Chords> > Get(ChordsLink chordsLInk)
{
var error = Task.FromResult(Result <Chords> .Error("invalid link"));
return(await _chordsGrabbers
.Where(x => x.CanGrab(chordsLInk.Origin))
.Take(1)
.Select(async x => (await x.GrabChords(chordsLInk.Url))
.Bind(y => new Chords(y, chordsLInk)
.Return())
)
.Aggregate(error, (x, y) => y));
}
private bool TryGetChordsLink(HtmlNode node, out ChordsLink chordsLink)
{
var children = node.ChildNodes;
var linkNode = children.Single(child => child.HasClass("types")).ChildNodes
.SingleOrDefault(x => x.HasClass("ta"));
var nameNode = children.Single(child => child.HasClass("h1")).ChildNodes
.Single(child => child.Name == "a");
var authorNode = children.Single(child => child.HasClass("h2")).ChildNodes
.Single(child => child.Name == "a");
var url = linkNode?.GetAttributeValue("href", string.Empty);
var name = nameNode.InnerText;
var author = authorNode.InnerText;
if (string.IsNullOrWhiteSpace(url))
{
chordsLink = null;
return(false);
}
chordsLink = new ChordsLink(_echordsUrl, _thumbnail, new Uri(url), name, author);
return(true);
}
public Task <IResult <Chords> > Get(ChordsLink chordsLInk)
{
return(_decoratee.Get(chordsLInk));
}
private static string GetHeader(ChordsLink link)
{
return($"{link.SongAuthor} - {link.SongName} \n"
+ $"Origin: {link.Origin} \n"
+ $"Url: {link.Url} \n");
}
public Chords(string chords, ChordsLink sourceLink)
{
SourceLink = sourceLink;
RawChords = chords;
}
