public void LoadExistingSongHashes(Dictionary <string, string> hashes)
{
if (hashes == null)
{
throw new ArgumentNullException(nameof(hashes), "hashes Dictionary cannot be null for LoadExistingSongHashes");
}
foreach (var pair in hashes)
{
if (ExistingHashes.ContainsKey(pair.Key))
{
ExistingHashes[pair.Key] = pair.Value;
}
else
{
ExistingHashes.Add(pair.Key, pair.Value);
}
}
}
public async Task <List <string> > GetExistingSongHashesAsync(bool hashExisting)
{
foreach (var songDir in TargetDirectory.GetDirectories())
{
// Add missing directories to the Dictionary with an empty string for the hash value.
if (!ExistingHashes.ContainsKey(songDir.FullName))
{
ExistingHashes.Add(songDir.FullName, string.Empty);
}
}
List <string> songsToHash;
if (hashExisting)
{
songsToHash = ExistingHashes.Keys.ToList();
}
else
{
songsToHash = ExistingHashes.Values.Where(hashData => string.IsNullOrEmpty(hashData)).ToList();
}
await Task.Run(() => songsToHash.AsParallel().ForAll(h =>
{
lock (_existingHashesLock)
{
if (ExistingHashes.ContainsKey(h))
{
ExistingHashes[h] = GenerateHash(h);
}
else
{
ExistingHashes.Add(h, GenerateHash(h));
}
}
})).ConfigureAwait(false);
return(ExistingHashes.Values.ToList());
}
