public bool Lookup()
{
if (!OnlineMetadataServiceJob.TrackConditionsMet(Track))
{
return(false);
}
string artwork_id = Track.ArtworkId;
if (artwork_id == null)
{
return(false);
}
else if (CoverArtSpec.CoverExists(artwork_id))
{
return(false);
}
else if (!InternetConnected)
{
return(false);
}
DatabaseTrackInfo dbtrack;
dbtrack = Track as DatabaseTrackInfo;
Release release;
// If we have the MBID of the album, we can do a direct MusicBrainz lookup
if (dbtrack != null && dbtrack.AlbumMusicBrainzId != null)
{
release = Release.Get(dbtrack.AlbumMusicBrainzId);
if (!String.IsNullOrEmpty(release.GetAsin()) && SaveCover(String.Format(AmazonUriFormat, release.GetAsin())))
{
return(true);
}
// Otherwise we do a MusicBrainz search
}
else
{
ReleaseQueryParameters parameters = new ReleaseQueryParameters();
parameters.Title = Track.AlbumTitle;
parameters.Artist = Track.AlbumArtist;
if (dbtrack != null)
{
parameters.TrackCount = dbtrack.TrackCount;
}
Query <Release> query = Release.Query(parameters);
release = query.PerfectMatch();
foreach (Release r in query.Best())
{
if (!String.IsNullOrEmpty(r.GetAsin()) && SaveCover(String.Format(AmazonUriFormat, r.GetAsin())))
{
return(true);
}
}
}
if (release == null)
{
return(false);
}
// No success with ASIN, let's try with other linked URLs
ReadOnlyCollection <UrlRelation> relations = release.GetUrlRelations();
foreach (UrlRelation relation in relations)
{
foreach (CoverArtSite site in CoverArtSites)
{
Match m = site.Regex.Match(relation.Target.AbsoluteUri);
if (m.Success)
{
string [] parameters = new string [m.Groups.Count];
for (int i = 1; i < m.Groups.Count; i++)
{
parameters[i - 1] = m.Groups[i].Value;
}
String uri = String.Format(site.ImgURI, parameters);
if (SaveCover(uri))
{
return(true);
}
}
}
if (relation.Type == "CoverArtLink" && SaveCover(relation.Target.AbsoluteUri))
{
return(true);
}
}
return(false);
}