cc turtle strip miner

args = { ... }
if #args ~= 2 then
    print("Usage: stripmine <depth> <amount of strips>")
    return
end
depth = tonumber(args[1])
n = tonumber(args[2])

function dig(depth)
    for i=1, depth do
        invCheck()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
    end
end

function digArray(depth,n)
    for i=1, n do
        if fuelCheck(depth*2) then
            dig(depth)
        end
        if i>1 then
            turtle.turnRight()
            for i=1,2 do
                dig(1)
            end
            turtle.back()
            turtle.back()
            turtle.turnLeft()
        end
        turtle.turnLeft()
        turtle.turnLeft()
        dig(depth)
        if i<n then
            turtle.turnRight()
            dig(3)
            turtle.turnRight()
        end
    end
end

function invCheck()
    if turtle.getItemDetail(14) ~= nil then
        turtle.turnRight()
        turtle.dig()
        turtle.forward()
        turtle.digUp()
        turtle.back()
        turtle.select(16)
        turtle.place()
        for i=2,15 do
            turtle.select(i)
            turtle.drop()
        end
        turtle.select(1)
        turtle.turnLeft()
    end
end

function fuelCheck(threshold)
    fuel = turtle.getFuelLevel()
    print("Current fuel: ", fuel)
    if fuel <= threshold then
        return turtle.refuel()
    end
    return true
end

digArray(depth,n)