Latex + Andesite casing production

-- This program is made for turning a
-- oak log into a stripped log from
-- 4 fluid extractors from industrial
-- forgoing, then apply an andesite to
-- create andesite casing from create.

-- Put this turtle on top of the log.
-- Input is to the right, andesite
-- casing output on the left, and
-- stripped logs in the back.


t = 30

while t > 0 do
    term.clear()
    term.setCursorPos(1,1)
    print("Automatic latex production and andesite casing production has started")
    turtle.select(2)
    turtle.turnRight()
    if turtle.getItemDetail() == nil then
        turtle.suck(1)
    end
    if (turtle.suck(1)) == true then
        print("Turtle has picked up 1 log")
        turtle.placeDown()
        print("Turtle has placed down the log")

        turtle.select(3)
        turtle.turnLeft()
        if turtle.suck(1) == true then
            print("Turtle has picked up 1 andesite")
            a = 1
        else
            print("There is no more andesite in input inventory. Turtle will now only create stripped logs")
            a = 0
        end

        i = 1
        while i == 1 do
            print("Turtle will now wait", t, "seconds for the fluid extractors to finish extracting fluid")
            sleep(t)
            print("Checking if log has been stripped")
            turtle.select(2)
            if turtle.compareDown() == false then
                i = 0
            else
                print("The log is not yet stripped, trying again later..")
            end
        end


        if a == 1 then
            turtle.select(3)
            turtle.placeDown()
            print("Andesite casing created!")
            print("Digging up the andesite casing!")
        else
            print("Digging up the stripped wood!")
        end

        turtle.select(1)
        turtle.digDown()
        turtle.turnLeft()
        if a == 0 then
            turtle.turnLeft()
            turtle.drop()
            turtle.turnRight()
            turtle.turnRight()
        else
            turtle.drop()
            turtle.turnRight()
        end

        print("All contents stored. Starting new iteration in 5 seconds")
        sleep(5)
    else
        print("Turtle has run out of logs. Refill input inventory!")
        t = 0
    end
end