/// <summary>
///
/// </summary>
/// <param name="core"></param>
/// <param name="itemType"></param>
/// <param name="itemId"></param>
/// <param name="rating"></param>
/// <remarks>ItemRated should implement a transaction.</remarks>
public static void LikeItem(Core core, ItemKey itemKey, LikeType like)
{
if (core == null)
{
throw new NullCoreException();
}
if (itemKey.Id < 1)
{
throw new InvalidItemException();
}
if (like < LikeType.Dislike || like > LikeType.Like)
{
throw new InvalidLikeException();
}
/* after 7 days release the IP for dynamics ip fairness */
SelectQuery query = Like.GetSelectQueryStub(core, typeof(Like));
query.AddCondition("like_item_id", itemKey.Id);
query.AddCondition("like_item_type_id", itemKey.TypeId);
QueryCondition qc1 = query.AddCondition("user_id", core.LoggedInMemberId);
QueryCondition qc2 = qc1.AddCondition(ConditionRelations.Or, "like_ip", core.Session.IPAddress.ToString());
qc2.AddCondition("like_time_ut", ConditionEquality.GreaterThan, UnixTime.UnixTimeStamp() - 60 * 60 * 24 * 7);
/*DataTable ratingsTable = db.Query(string.Format("SELECT user_id FROM ratings WHERE rate_item_id = {0} AND rate_item_type = '{1}' AND (user_id = {2} OR (rate_ip = '{3}' AND rate_time_ut > UNIX_TIMESTAMP() - (60 * 60 * 24 * 7)))",
itemId, Mysql.Escape(itemType), loggedInMember.UserId, session.IPAddress.ToString()));*/
DataTable likesTable = core.Db.Query(query);
ItemInfo ii = null;
try
{
ii = new ItemInfo(core, itemKey);
}
catch (InvalidIteminfoException)
{
ii = ItemInfo.Create(core, itemKey);
}
if (likesTable.Rows.Count > 0)
{
Like liked = new Like(core, likesTable.Rows[0]);
if (liked.Liking == like)
{
throw new AlreadyLikedException();
}
switch (like)
{
case LikeType.Like:
ii.DecrementDislikes();
ii.IncrementLikes();
break;
case LikeType.Dislike:
ii.DecrementLikes();
ii.IncrementDislikes();
break;
}
UpdateQuery uQuery = new UpdateQuery("likes");
uQuery.AddField("like_time_ut", UnixTime.UnixTimeStamp());
uQuery.AddField("like_liking", (sbyte)like);
uQuery.AddField("like_ip", core.Session.IPAddress.ToString());
uQuery.AddCondition("user_id", core.LoggedInMemberId);
uQuery.AddCondition("like_item_id", itemKey.Id);
uQuery.AddCondition("like_item_type_id", itemKey.TypeId);
// commit the transaction
core.Db.Query(uQuery);
}
else
{
switch (like)
{
case LikeType.Like:
ii.IncrementLikes();
break;
case LikeType.Dislike:
ii.IncrementDislikes();
break;
}
InsertQuery iQuery = new InsertQuery("likes");
iQuery.AddField("like_item_id", itemKey.Id);
iQuery.AddField("like_item_type_id", itemKey.TypeId);
iQuery.AddField("user_id", core.LoggedInMemberId);
iQuery.AddField("like_time_ut", UnixTime.UnixTimeStamp());
iQuery.AddField("like_liking", (sbyte)like);
iQuery.AddField("like_ip", core.Session.IPAddress.ToString());
// commit the transaction
core.Db.Query(iQuery);
}
return;
}
