fill hopper

function getItemsCount(target)
    -- if no target specified break
    if not target then
        print("No target specified")
        print("use top, bottom, front, back, left, right")
        print("or use 'minecraft:hopper', 'minecraft:dropper', 'minecraft:chest' etc.")
        print("example getItemCount(\"minecraft:dropper\")")
        break
    end

    -- determin as side has been given or a container to search for
    if (target == "top") or (target == "bottom") or (target == "front") or (target == "back") or (target == "left") or (target == "right") then
        local container = peripheral.wrap(target)
    else
        local container = peripheral.find(target)
    end

    totalItems = 0
    local slots = container.size()

    for slot=1, slots do
        item = container.getItemDetail(slot)
        if item ~= nil then
            -- getting count
            amount = item.count
            totalItems = totalItems + amount
        end

    -- result
    return totalItems
end

function getItemsMaxCount(target)
    -- if no target specified break
    if not target then
        print("No target specified")
        print("use top, bottom, front, back, left, right")
        print("or use 'minecraft:hopper', 'minecraft:dropper', 'minecraft:chest' etc.")
        print("example getItemsMaxCount(\"minecraft:dropper\")")
        break
    end

    -- determin as side has been given or a container to search for
    if (target == "top") or (target == "bottom") or (target == "front") or (target == "back") or (target == "left") or (target == "right") then
        local container = peripheral.wrap(target)
    else
        local container = peripheral.find(target)
    end

    totalMaxItems = 0
    local slots = container.size()

    for slot=1, slots do
        item = container.getItemDetail(slot)
        -- totalMaxItems
        if item ~= nil then
            -- getting maxCount
            totalMaxItems = totalMaxItems + item.maxCount
        else
            -- assuming stackable to 64
            totalMaxItems = totalMaxItems + 64
        end

    -- result
    return totalMaxItems
end


-- loop
while true do
    turtle.dig()
    term.clear()
    term.setCursorPos(1, 1)
    print("container: "..getItemsInHopper().."/"..getMaxItemsInHopper())
    os.sleep(0.2)

    -- wait if hopper is full and inventory has atleast 16 items
    if (getItemsCount() == getItemsMaxCount() and turtle.getItemCount() >= 16) then
        term.clear()
        term.setCursorPos(1, 1)
        print("container: "..getItemsInHopper().."/"..getMaxItemsInHopper().." -> +16 -> stopped minning")
        -- while getItemsInHopper() == getMaxItemsInHopper() do
        while turtle.getItemCount() >= 16 do
            os.sleep(1)
        end
    end
end