public void AddBuddy(Buddy buddy, BuddyJoinType joinType)
{
if (_buddyIdsBlackList.Contains(buddy.Id))
{
throw new InvalidOperationException("Buddy is on this group's blacklist");
}
if (_buddyIds.Contains(buddy.Id))
{
throw new InvalidOperationException($"Buddy {buddy.Id} is already in the group");
}
if (_buddyIds.Count >= MaximumGroupSize)
{
throw new InvalidOperationException($"Only {MaximumGroupSize} buddies are allowed per group");
}
var e = new BuddyAdded(Id, buddy.Id, joinType);
Publish(e);
}
private void When(BuddyAdded e)
{
_buddyIds.Add(e.BuddyId);
}
