player = peripheral.wrap("top")
--modem = peripheral.wrap("right")
manip = peripheral.wrap("bottom")
modem.open(1337)

-- function GetPacket()
--     local packet = {}
--     packet.event,
--      packet.side,
--      packet.frequency,
--      packet.replyFrequency,
--      packet.message,
--      packet.distance = os.pullEvent("modem_message")
--     return packet
-- end

function SwapItems (heldSlot, targetSlot, tempSlot)
    player.pushItems("up", heldSlot, 64, tempSlot)
    player.pullItems("up", targetSlot, 64, heldSlot)
end

function SwapBack (heldSlot, targetSlot, tempSlot)
    player.pushItems("up", heldSlot, 64, targetSlot)
    player.pullItems("up", tempSlot, 64, heldSlot)
end

function TestName(slot, name)
    local item = player.getItemMeta(slot)
        --print(name)
    if item then
        --print(item.displayName)
        return item.displayName == name
    else return false end
end

function RunTest(name)
    for itemSlot = 1, 9, 1 do
        result = TestName(itemSlot, name)
        if result then
            --print(itemSlot)
            return itemSlot
        end
    end
end

function ConsumeItem(slot)
    inv = manip.getInventory()
    item = inv.getItem(slot)
    if item and item.consume then
        item.consume()
    end
end

--print (manip.getMetaOwner().heldItem.getMetadata().displayName)

while true do

    itemTest = player.getItemMeta(27)

    if not itemTest then

        --SEE HOW HUNGRY I AM

        saturation = manip.getMetaOwner().food.saturation
        if saturation < 10 then
            SwapItems  (27, 1, 26)
            ConsumeItem(27)
        end

        health = manip.getMetaOwner().health
        maxHealth = manip.getMetaOwner().maxHealth
        potions = manip.getMetaOwner().potionEffects

        --CHECK IF REGEN IS ACTIVE
        if not string.find(potions, "regen") then
            --CHECK IF I GOT OUCHIES
            if health < (maxHealth - 20) then
                SwapItems  (27, 2, 26)
                ConsumeItem(27)
                SwapBack   (27, 2, 26)
            end
        end

    end

    sleep(0.5)
end