// SPDX-License-Identifier: MIT
// Copyright (c) 2026 Incoprea
// Split catalog rows by a rule
// Not compiled or tested in-world
// Setup: Edit ROWS with integer quantities, then touch as owner.
// Stop / restore: Remove or disable; it only reports locally to the owner.
// Notes: This is configured catalog data, not live sale stock. Negative quantities are reported as invalid instead of classed as empty.
// License: see LICENSE in this distribution.
// Original Incoprea example. MIT.
list ROWS=["Lamp",4,"Cup",0,"Bench",2,"Plant",0];
default
{
    touch_start(integer touches)
    {
        if(llDetectedKey(0)!=llGetOwner())return;
        if(llGetListLength(ROWS)%2)
        {
            llOwnerSay("Incomplete pair.");
            return;
        }
        list available=[];
        list empty=[];
        integer i;
        for(i=0;i<llGetListLength(ROWS);i+=2)
        {
            integer quantity=llList2Integer(ROWS,i+1);
            if(quantity<0)
            {
                llOwnerSay("Invalid negative quantity.");
                return;
            }
            if(quantity>0)available+=llList2List(ROWS,i,i+1);
            else empty+=llList2List(ROWS,i,i+1);
        }
        llOwnerSay("Available rows: "+llList2CSV(available));
        llOwnerSay("Empty rows: "+llList2CSV(empty));
    }
    changed(integer flags)
    {
        if(flags & CHANGED_OWNER)llResetScript();
    }
}