function refuel()
   if turtle.getFuelLevel() < 10 then
      turtle.select(1)
      turtle.refuel(1)
      print("refueling")
   end
end

function plant()
   if turtle.getItemCount(2) and not 0 then
      turtle.select(2)
      turtle.placeDown()
   else
      turtle.select(3)
      turtle.placeDown()
   end
end

function harvest()
   turtle.digDown()
end

function prepare()
   turtle.attackDown()
end

function turnLeft()
   turtle.turnLeft()
   turtle.forward()
   turtle.turnLeft()
end

function turnRight()
   turtle.turnRight()
   turtle.forward()
   turtle.turnRight()
end

function work()
   refuel()
   harvest()
   prepare()
   plant()
   turtle.forward()
end

function main()
   print("Starting")
   refuel()
   turtle.up()
   turtle.forward()
   turtle.turnRight()

   for j=1,8 do
      for i=1,8 do
         work()
      end
      turnLeft()
      turtle.forward()
      for i=1,8 do
         work()
      end
      turnRight()
      turtle.forward()
   end
   turtle.turnRight()
   for i=1,16 do
   turtle.forward()
   end
   turtle.down()
   turtle.turnRight()
   turtle.turnRight()
   print("...Finished!")
end


main()