ComputerCraft Item puller

-- Pulls all items of the target item
-- except for 1 Stack out of the
-- inventory in front of the turtle
-- and places it in the inventory
-- behind the turtle

local TARGET_ITEM = "minecraft:blaze_rod"

local supplyChest = peripheral.wrap("front")
local targetChest = peripheral.wrap("back")

function transferItems()
    local firstFoundSlot = 0
    for slot, item in pairs(supplyChest.list()) do
        if item.name == TARGET_ITEM then
            if firstFoundSlot == 0 then
                firstFoundSlot = slot
            else
                supplyChest.pushItems(peripheral.getName(targetChest), slot)
            end
        end
    end
end

if supplyChest == nil then
    print("No supply chain found in front of the turtle")
elseif targetChest == nil then
    print("No target chest found behind the turtle")
else
    term.clear()
    term.setCursorPos(1, 1)
    term.write("Transfering items...")
    -- loop transfer
    while true do
        transferItems()
        sleep(1)
    end
end