Construct Storage Shaft

local chest1, chest2, pipe, ladder = 1, 2, 3, 4
local lend = false

function forward()
    while not turtle.forward() do
        while turtle.attack() do
        end
        while turtle.dig() do
        end
    end
end

function clearLine()
    for f=0,3 do
        if turtle.detect() then
            turtle.dig()
        end
        forward()
    end
end

function turnRight()
    turtle.turnRight()
    if turtle.detect() then
        turtle.dig()
    end
    forward()
end

function turnLeft()
    turtle.turnLeft()
    if turtle.detect() then
        turtle.dig()
    end
    forward()
end

function clear()
    clearLine()
    turnRight()
    turtle.turnRight()
    clearLine()
    turnLeft()
    turtle.turnLeft()
    clearLine()
    turnRight()
    turtle.turnRight()
    clearLine()
    turnLeft()
    turtle.turnLeft()
    clearLine()
end

function clearGotoStart()
    turtle.turnLeft();
    turtle.turnLeft();
    for v=0,3 do
        turtle.forward()
    end
    turtle.turnRight();
    for q=0,3 do
        turtle.forward()
    end
    turtle.turnRight();
end

function goDown()
    local success, data = turtle.inspectDown()

    if success and data.name == "minecraft:bedrock" then
        lend = true
        print("hit bedrock")
    elseif turtle.detectDown() then
        turtle.digDown()
        turtle.down()
    else
        turtle.down()
    end
end

function selectItem(name)
    for i=1,16 do
        turtle.select(i)
        local data = turtle.getItemDetail()
        if data and data.name == name then
            return
        end
    end
end

function selectChest()
    selectItem("minecraft:chest")
end

function selectLadder()
    selectItem("minecraft:ladder")
end

function selectPipe()
    selectItem("ExtraUtilities:pipes")
end

function selectGlowstone()
    selectItem("minecraft:glowstone")
end


function placeChestLayer()
    --- Line 1
    selectChest()
    forward()
    forward()
    turtle.placeUp()
    forward()
    forward()
    selectLadder()
    turtle.placeUp()
    turtle.turnRight()
    forward()
    turtle.turnRight()
    turtle.turnRight()
    turtle.place()
    turtle.turnLeft()
    --- Line 2
    forward()
    selectGlowstone()
    turtle.placeUp()
    forward()
    selectChest()
    turtle.placeUp()
    forward()
    forward()
    turtle.turnLeft()
    forward()
    turtle.turnLeft()
    --- Line 3
    selectChest()
    turtle.placeUp()
    forward()
    turtle.placeUp()
    forward()
    selectPipe()
    turtle.placeUp()
    forward()
    turtle.turnRight()
    turtle.turnRight()
    turtle.place()
    turtle.turnLeft()
    turtle.turnLeft()
    selectChest()
    turtle.placeUp()
    forward()
    turtle.placeUp()
    forward()
    turtle.turnRight()
    forward()
    turtle.turnRight()
    --- Line 4
    forward()
    forward()
    selectChest()
    turtle.placeUp()
    forward()
    selectGlowstone()
    turtle.placeUp()
    forward()
    turtle.turnLeft()
    forward()
    turtle.turnLeft()
    --- Line 5
    selectChest()
    forward()
    forward()
    turtle.placeUp()
    forward()
    forward()
end

while not lend do
    clear()
    clearGotoStart()
    goDown()
    if not lend then
        clear()
        clearGotoStart()
        placeChestLayer()
        clearGotoStart()
        goDown()
    end
end