/// <summary>
/// Don't call this directly - it should only be called from Room.UnRegister
/// </summary>
/// <param name="room"></param>
public void RemoveRoom(ChatRoom room)
{
if (rooms.ContainsKey(room.RoomGuid))
{
lock (rooms)
{
rooms.Remove(room.RoomGuid);
}
}
}
/// <summary>
/// Gets the latest items in the cache, up to [latestItemGuid].
/// If we specify [roomToReturnInFullAndExclude], we first append all items from that room, and exclude items from that room in the cache items
/// </summary>
public string GetItems(Guid latestItemGuid, ref Guid newestItemGuid, ChatRoom roomToReturnInFullAndExclude)
{
Status("User.GetItems", false);
bool excludeRoom = roomToReturnInFullAndExclude != null;
lastRequest = DateTime.Now;
string output = string.Empty;
lock (responseBuilder)
{
//clear the response builder
responseBuilder.Length = 0;
if (roomToReturnInFullAndExclude != null)
{
Guid g = Guid.Empty;
roomToReturnInFullAndExclude.AppendItems(true, Guid.Empty, ref g, ChatServer.GlobalMaxItems, responseBuilder);
}
lock (itemCache)
{
if (itemCache.Count > 0)
{
//set the latest message id to pass back by ref
newestItemGuid = itemCache[itemCache.Count - 1].UniqueItemGuid;
int i = 0;
if (latestItemGuid != Guid.Empty)
{
i = itemCache.Count - 1;
//find the value of i to start building from
while (i >= 0 && itemCache[i].UniqueItemGuid != latestItemGuid)
{
i--;
}
//increment i because we already have the message at position i
i++;
}
//build the response from the remaining items
for (; i < itemCache.Count; i++)
{
if (itemCache[i].Disabled)
continue;
if (excludeRoom && itemCache[i].RoomGuid == roomToReturnInFullAndExclude.RoomGuid)
continue;
if (responseBuilder.Length > 0)
responseBuilder.Append(",");
responseBuilder.Append(itemCache[i].Item);
}
output = responseBuilder.ToString();
//clear the response builder
responseBuilder.Length = 0;
}
}
}
return output;
}
/// <summary>
/// Don't call this directly - it should only be called from Room.Register
/// </summary>
/// <param name="room"></param>
public void AddRoom(ChatRoom room)
{
lock (rooms)
{
if (rooms.ContainsKey(room.RoomGuid))
return;
rooms.Add(room.RoomGuid, room);
}
}