-- Get fuel level for turtle

local fuelLevel = turtle.getFuelLevel()

-- Ask user for length, width, and height of quarry ( rectangle )

print("Please enter the length of your quarry")
local length = io.read()

print("Please enter the width of your quarry")
local width = io.read()

print("Please enter how far you would like the quarry to go down")
local height = io.read()

local function mine()
do
    turtle.dig()
    turtle.forward()
end

-- Change it to false if you want turtle to go left instead of right
local direction = true

local directionNew = direction

if(fuelLevel < (((length) * (width) * (height)) + 2 )) then
    print("You don't have enough fuel to run this code! Sorry!")
else
    print("Success! You have enough fuel! Starting program now!")

    for heightCounter = height, 1, -1
    do
        turtle.digDown()
        turtle.down()

        for lengthCounter = length, 1, -1
        do
            direction = not(direction)
            mine()

            if(direction) then
                turtle.turnLeft()
            else
                turtle.turnRight()
            end

            for widthCounter = width, 1, -1
            do
                turtle.mine()
            end

            if(direction) then
                turtle.turnLeft()
            else
                turtle.turnRight()
            end
        end
        turtle.dig()
        turtle.forward()
        turtle.turnRight()
        turtle.turnRight()
    end
end