/// <summary>
/// Checks the configured track folder for new tracks, and removes tracks from the cache
/// that no longer exist.
/// </summary>
public static void UpdateCache()
{
if (_cache == null)
{
_cache = InitCache();
}
if (!Directory.Exists(Properties.Settings.Default.TrackPath))
{
System.Windows.Forms.MessageBox.Show("Error! You have chosen an invalid content folder.\r\n" +
"Please select a valid content folder.");
return;
}
var foundTracks = new Dictionary <Guid, SongMeta>();
XDocument cacheDoc = new XDocument(new XElement("songs"));
var tracksEl = cacheDoc.Element("songs");
foreach (var t in _cache)
{
var exists = t.Value.SongPath.StartsWith(Properties.Settings.Default.TrackPath) &&
((t.Value.Type == "Zip" && File.Exists(t.Value.SongPath)) ||
(t.Value.Type == "Folder" && Directory.Exists(t.Value.SongPath)));
if (!exists)
{
continue;
}
foundTracks[t.Key] = t.Value;
tracksEl.Add(t.Value.ToXml());
}
// Search for ZIP files.
var files = Directory.GetFiles(Properties.Settings.Default.TrackPath, "*.zip");
foreach (var file in files)
{
// Ensure filename is a GUID string
if (Path.GetFileName(file)?.Length != 40)
{
continue;
}
try
{
var guid = Guid.Parse(Path.GetFileName(file).Substring(0, 36));
if (foundTracks.ContainsKey(guid))
{
continue;
}
var newTrack = SongMeta.FromZip(file);
foundTracks[newTrack.ContentGuid] = newTrack;
tracksEl.Add(newTrack.ToXml());
}
catch (Exception e)
{
Console.WriteLine(file);
Console.WriteLine(e.Message);
}
}
// Search for JCF directories.
var dirs = Directory.GetDirectories(Properties.Settings.Default.TrackPath, "*-*-*-*-*");
foreach (var dir in dirs)
{
if (Path.GetFileName(dir)?.Length < 36)
{
continue;
}
try
{
var guid = Guid.Parse(Path.GetFileName(dir).Substring(0, 36));
if (foundTracks.ContainsKey(guid))
{
continue;
}
if (!File.Exists(Path.Combine(dir, "info.plist")))
{
continue;
}
using (var reader = new StreamReader(new FileStream(Path.Combine(dir, "info.plist"), FileMode.Open)))
{
var newTrack = SongMeta.FromPlist(XDocument.Parse(reader.ReadToEnd()), guid, "Folder", dir);
foundTracks[newTrack.ContentGuid] = newTrack;
tracksEl.Add(newTrack.ToXml());
}
}
catch (Exception e)
{
Console.WriteLine(dirs);
Console.WriteLine(e.Message);
}
}
string cacheDir = Path.GetDirectoryName(CacheFileName);
if (!Directory.Exists(cacheDir))
{
Directory.CreateDirectory(cacheDir);
}
using (var s = File.OpenWrite(CacheFileName))
{
s.SetLength(0);
cacheDoc.Save(s);
}
_cache = foundTracks;
}