turtle autocraft

--turtle startup
shell.run("clear");
print("Starting Up Turtle...");
for i=1,16 do
    turtle.select(i);
    turtle.dropDown();
    if turtle.getItemCount(i) ~= 0 then
        if turtle.getItemDetail(i).name == "minecraft:stick" then
            while turtle.dropUp() == true do sleep(0); end
        end
    end
end
turtle.select(1);
if turtle.getItemCount(2) ~= 0 then
    if turtle.getItemDetail(2).name == "minecraft:oak_planks" then
        if turtle.getItemDetail(1).name == "minecraft:oak_planks" then
            turtle.transferTo(6);
            turtle.craft();
            for t=1,4 do
                turtle.select(t);
                while turtle.dropUp() == true do sleep(0); end
            end
            turtle.select(1);
        end
    end
    if turtle.getItemCount(6) ~= 0 then
        if turtle.getItemDetail(6).name == "minecraft:oak_planks" then
            turtle.craft();
            for t=1,4 do
                turtle.select(t);
                while turtle.dropUp() == true do sleep(0); end
            end
            turtle.select(1);
        end
    end
end

for i=1,16 do
    turtle.select(i);
    if turtle.getItemCount(i) ~= 0 then turtle.drop() end
end

turtle.select(1);
print("Turtle Started Up.");
while true do
    turtle.suckDown();
    turtle.craft();
    turtle.transferTo(6);
    turtle.craft();
    for i=1,4 do
        turtle.select(i);
        while turtle.dropUp() == true do sleep(0); end
    end
    turtle.select(1);
end