-- 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()

if(fuelLevel < (((length*2) * (width*2) * (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!")

    local x1, y1, z1 = gps.locate()

    for a = height, 1, -1
    do
        turtle.digDown()
        turtle.down()
        for b = length, 1, -1
        do
            turtle.dig()
            turtle.forward()
            turtle.turnRight()
            for c = width-1, 1, -1
            do
                turtle.dig()
                turtle.forward()
            end
            turtle.turnLeft()
            turtle.turnLeft()
            for d = width-1, 1, -1
            do
                turtle.forward()
            end
            turtle.turnRight()
        end
        turtle.turnRight()
        turtle.turnRight()
        for e = length, 1, -1
        do
            turtle.forward()
        end
        turtle.turnRight()
        turtle.turnRight()
    end
    for f = height, 1, -1
    do
        turtle.up()
    end
end