local slot = 1
local message = ""

function checkSlot()
    if turtle.getItemCount(slot) ~= 0 then
      return true
    else
      for i = slot, 12 do
        if turtle.getItemCount(i) > 0 then
          turtle.select(i)
          slot = i
          return true
        end
      end
      return false
    end
end

function HasItems()
  for i = 1, 12 do
      if turtle.getItemCount(i) > 0 then
        return true
      end
  end
  return false
end

local run = true

turtle.select(slot)

while run do
  while turtle.forward() do
    --turtle will move forward to a chest
  end
    --check to see if chest is empty
  if turtle.suck() then
    while turtle.suck() do
      --fill turtle inventory
    end
  else
    --chest is empty
    run = false
    message = "chest A ran out of items"
  end

  turtle.turnRight()
  turtle.turnRight()

  while turtle.forward() do
    --move to next chest
  end

  --cycle through turtles inventory
  while checkSlot() do
      --if turtle cant drop an item, chest is full
      if turtle.drop() == false and hasItems() then
        message = "chest B ran out of space"
        run = false
      end
  end

  --turn around
  turtle.turnRight()
  turtle.turnRight()
end