public void DislikeTrack(User user, int entryId)
{
foreach (var userMarkedId in _usersMarkedByEntryId [entryId])
if (userMarkedId == user.Id)
return;
_usersMarkedByEntryId [entryId].Add (user.Id);
UpdateUserPriorities ();
if (!_usersActivities.ContainsKey (user.Id)) {
var newActivity = new UserActivitiesRecord () {
basePriority = 1.0,
activitiesCount = 0,
lastActivityTime = DateTime.Now
};
_usersActivities.Add (user.Id, newActivity);
}
var activitiesRecord = _usersActivities [user.Id];
if (activitiesRecord.activitiesCount++ == 0)
++_activeUsersCount;
var entry = _playlistEntries [entryId];
++entry.DislikesNum;
entry.Priority *= (double)(_activeUsersCount - 1.0) / _activeUsersCount;
Playlist.Sort (comparePlaylistEntries);
}
public PlaylistEntry QueueTrack(User user, Track track)
{
UpdateUserPriorities ();
if (!_usersActivities.ContainsKey (user.Id)) {
var newActivity = new UserActivitiesRecord () {
basePriority = 1.0,
activitiesCount = 0,
lastActivityTime = DateTime.Now
};
_usersActivities.Add (user.Id, newActivity);
}
var activitiesRecord = _usersActivities [user.Id];
if (activitiesRecord.activitiesCount++ == 0)
++_activeUsersCount;
var entry = new PlaylistEntry () {
User = user,
Track = track,
Id = _freeEntryId++,
LikesNum = 0,
DislikesNum = 0,
Priority = activitiesRecord.basePriority
};
activitiesRecord.basePriority *= Math.Pow (0.5, track.Duration.TotalMilliseconds / AVG_TRACK_LENGTH_MS);
_usersMarkedByEntryId.Add (entry.Id, new List<string> ());
_usersMarkedByEntryId [entry.Id].Add (user.Id);
Playlist.Add (entry);
Playlist.Sort (comparePlaylistEntries);
_playlistEntries.Add (entry);
if (!_playing)
Play ();
return entry;
}
