local turtleUtils = {}

local IDLE_TIME = 2

turtleUtils.waitForInventory = function(side)
  local inv = nil

  while true do
    inv = peripheral.wrap(side)

    if inv and peripheral.hasType(inv, 'inventory') then
      break
    end

    os.sleep(IDLE_TIME)
  end

  return inv
end

turtleUtils.trySuckUp = function()
  while not turtle.suckUp() do
    os.sleep(IDLE_TIME)
  end
end

turtleUtils.tryDrop = function()
  while true do
    if turtle.getItemCount() == 0 then
      return false
    end

    local dropOk = turtle.drop();

    if (dropOk) then
      return true
    end

    os.sleep(IDLE_TIME)
  end
end

turtleUtils.digAll = function()
  while turtle.dig() do end
end

turtleUtils.countFreeSlots = function()
  local freeSlots = 0

  for i=1, 16, 1 do
    if turtle.getItemCount(i) == 0 then
      freeSlots = freeSlots + 1
    end
  end

  return freeSlots
end

turtleUtils.getFuelPercentage = function()
  return (turtle.getFuelLevel() / turtle.getFuelLimit()) * 100
end

return turtleUtils