include library.utils;
include library.player_structure;
include library.structure;

inherits item.special.nomove_base

trigger OnAttach()
{
	setObjVar(self, "noTrade", true);
	
	propogateNoTrade(self, true);
	
	return SCRIPT_CONTINUE;
}


trigger OnLostItem(obj_id destContainer, obj_id transferer, obj_id item)
{
	if (containsNoTradeItem(self))
		return SCRIPT_CONTINUE;
	
	removeObjVar(self, "noTrade");
	propogateNoTrade(self, false);
	detachScript(self, "item.special.nomove_container");
	
	return SCRIPT_CONTINUE;
}

boolean containsNoTradeItem(obj_id container)
{
	obj_id[] contents = getContents(container);

	for (int i = 0; i < contents.length; i++)
	{
		if (hasObjVar(contents[i], "noTrade"))
			return true;
	}
	
	return false;
}

void propogateNoTrade(obj_id container, boolean isNoTrade)
{
	obj_id player = utils.getContainingPlayer(container);
	obj_id inventory = getObjectInSlot(player, utils.SLOT_INVENTORY);

	obj_id parent = getContainedBy(container);
	while (isIdValid(parent) && !getTemplateName(parent).equals(structure.TEMPLATE_CELL) && parent != inventory && !player_structure.isBuilding(parent))
	{
		// Propogate noTrade flag up
		if (isNoTrade)
		{
			if (!hasObjVar(parent, "noTrade"))
			{
				attachScript(parent, "item.special.nomove_container");
				return;
			}
		}
		// Clear noTrade flag up
		else
		{
			if (containsNoTradeItem(parent))
				return;

			if (hasScript(parent, "item.special.nomove_container"))
			{
				removeObjVar(parent, "noTrade");
				detachScript(parent, "item.special.nomove_container");
			}
			else
			{
				// permanent no trade item, abort out
				return;
			}
		}
		
		parent = getContainedBy(parent);
	}
}