Turtle Stairs

version = 2.1
term.clear()
term.setCursorPos(1,1)
print("Welcome to Mr John Dowe's \n Stair Creator version " .. version .. "\n\n")
recursions = 1

function checkFuel()
    if turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 1 then
        turtle.select(1)
        if turtle.getItemCount( turtle.getSelectedSlot() ) > 0 then
            print("Refuelling")
            turtle.refuel()
            return
        else
            print("I'm out of fuel in slot 1.")
            checkFuel()
        end

    end
end

checkFuel()

print("Please Tell me how far down you want the stairs to go?")
depth = read()
term.clear()
term.setCursorPos(1,1)
print("Do you want to place torches: Yes/No")
print("Please place torches in slot 16")
torches = read()
torches = tostring(torches)
torches = string.lower(torches)
term.clear()
term.setCursorPos(1,1)
print("Would you like me to place stairs?: Yes/No")
print("Place stairs in slot 2")
stairsPlacement = read()
stairsPlacement = tostring(stairsPlacement)
stairsPlacement = string.lower(stairsPlacement)
term.clear()
term.setCursorPos(1,1)
print("Creating Stairs Going Down")

for i=1,depth do

        if(stairsPlacement == "yes") then

            turtle.digDown()
            turtle.down()
            turtle.turnLeft()
            turtle.turnLeft()
            turtle.dig()
            turtle.select(2)
            turtle.place()
            turtle.turnRight()
            turtle.turnRight()

        else
            turtle.digDown()
            turtle.down()
        end

        for i=1,4 do
                if i == 4 then

                        turtle.turnLeft()
                        turtle.dig()
                        turtle.turnRight()
                        turtle.turnRight()
                        turtle.dig()
                        turtle.turnLeft()
                        turtle.back()



                    if (recursions % 5 == 0) and (torches == "yes") then
                            turtle.select(16)
                            turtle.place()
                            turtle.back()
                    else
                            turtle.back()
                    end
                else

                    turtle.turnLeft()
                    turtle.dig()
                    turtle.turnRight()
                    turtle.turnRight()
                    turtle.dig()
                    turtle.turnLeft()
                    turtle.dig()
                    turtle.forward()

                end
                recursions = recursions + 1
        end
end
term.clear()
term.setCursorPos(1,1)
print("Stairs are Complete")