-- Variables

local me = peripheral.wrap("right")


-- Functions

function export(itemID, itemDmg, amt)
    if amt == nil then    --if itemDmg isn't specified, amt will be nil and itemDmg will be the proper amt value
        amt = itemDmg    --so put itemDmg into amt
        itemDmg = 0    --and use the default value for itemDmg
    end
    for number, item in pairs(list) do
        if item.fingerprint.id == itemID and item.fingerprint.dmg == itemDmg then
            while amt > 64 do
                me.exportItem(item.fingerprint, "SOUTH", amt)
                amt = amt - 64
            end
            me.exportItem(item.fingerprint, "SOUTH", amt)
        end
    end
end

function exportExcess(itemID, itemDmg, maxAmt)
    if maxAmt == nil then    --if itemDmg isn't specified, maxAmt will be nil and itemDmg will be the proper maxAmt value
        maxAmt = itemDmg    --so put itemDmg into maxAmt
        itemDmg = 0    --and use the default value for itemDmg
    end
    for number, item in pairs(list) do
        if item.fingerprint.id == itemID and item.fingerprint.dmg == itemDmg then
            if item.size >  maxAmt then
                print("Condensing "..item.size-maxAmt.." "..itemID)
                export(itemID, itemDmg, item.size-maxAmt)
            end
        end
    end
end


-- Main code

while true do
    term.clear()
    term.setCursorPos(1,1)
    list = me.getAvailableItems()
    exportExcess("minecraft:cobblestone", 500000)
    os.sleep(10)
end