public static UserDTO Map(PlaylistSongRating playlistSongRating, FbCookieInfo cookieInfo)
{
return Mapper.Map<PlaylistSongRating, UserDTO>(playlistSongRating);
}
public static SongWithUserRatingDTO Map(PlaylistSongRating rat, bool isAdmin = false)
{
var ratVal = Mapper.Map<PlaylistSongRating, SongWithUserRatingDTO>(rat);
ratVal.Member = MemberDTOFactory.Map<MemberDTO>(rat.Creator, rat, isAdmin);
return ratVal;
}
public virtual PlaylistSongRating AddSong(Song song, FbUser user, bool addedByAdmin, short rating = 1)
{
var playlistSongRating = new PlaylistSongRating
{
Playlist = this,
Song = song,
Creator = user
};
Ratings.Add(playlistSongRating);
var palylistSongRating = RateSong(playlistSongRating, user, rating, addedByAdmin, true);
if (addedByAdmin)
{
palylistSongRating.IsAddedByAdmin = true;
}
return palylistSongRating;
}
public virtual PlaylistSongRating DetachSong(PlaylistSongRating playlistSongRating, FbUser user)
{
if (playlistSongRating != null)
{
Ratings.Remove(playlistSongRating);
NumberOfVotes -= playlistSongRating.Details.Count(detail=>detail.Rating!=0);
NumberOfVotes -= Math.Abs(playlistSongRating.AdminRating);
NumberOfSongs--;
//TODO: enhance this efficiency, move this to nhibernate layer. Currently alright for this usage, but might be heavy.
foreach (var detail in playlistSongRating.Details.Select(_detail=>_detail.VotingUser))
{
var userPlaylistInfo = detail.PlaylistsInfo.FirstOrDefault(pInfo => pInfo.Playlist == this);
if(userPlaylistInfo!= null)
userPlaylistInfo.NumOfVotes--;
}
//we don't reward the owner of the playlist, it's not fair
if (playlistSongRating.IsOwner(user.Id))
{
RewardUser(user, UserPlaylistInfo.Operation.DeleteSong);
if (playlistSongRating.Details.Any(details =>
details.VotingUser == user
&& details.Rating!=0))
{
RewardUser(user, UserPlaylistInfo.Operation.RemoveSongRating);
}
}
}
return playlistSongRating;
}
/// <summary>
/// add single rating to the database or update it with new value
/// </summary>
///
/// <param name="song">
/// song to add the rating to
/// </param>
///
/// <param name="ratingUser">
/// who's adding this rating?
/// </param>
///
/// <param name="rating">
/// rating value: either 1 or -1
/// </param>
///
/// <returns>
/// A boolean indicating if rating was in the right input range (between -1 to 1)
/// </returns>
public virtual PlaylistSongRating RateSong(PlaylistSongRating playlistSongRating, FbUser ratingUser, short rating, bool isAddedByAdmin = false, bool isNewSong = false)
{
if (PlaylistSongRating.IsRatingValueInvalid(rating))
{
return null;
}
RatingStatus ratingType = RatingStatus.NothingNew;
//var currentStatistics = GetCurrentStatistics(song);
if (isAddedByAdmin) //if admin votes the song give it a special treatment
{
if (playlistSongRating.AdminRating != 0 && rating == 0) //admin just cleared his vote
{
ratingType = RatingStatus.RemovedRating;
}
if (playlistSongRating.AdminRating == 0 && rating != 0) //admin switched between positive and negative score
{
ratingType = RatingStatus.AddedNewRating;
}
if (playlistSongRating.AdminRating == 0 && rating == 0) //admin added song but didn't rate it (can be achieved through harvesting)
{
ratingType = RatingStatus.AddedNewEmptyRating;
}
playlistSongRating.SetAdminRating(playlistSongRating.AdminRating, rating, isNewSong);
playlistSongRating.AdminRating = rating;
}
else
{
ratingType = playlistSongRating.AddRating(ratingUser, rating);
}
//note: AddRating also adds points to user as well as advances the NumberOfVotes and NumberOfSongs counters
UpdateAggregatedInfo(ratingType, ratingUser, isNewSong, isAddedByAdmin);
return playlistSongRating;
}
