choptree

local function ChopTreeUp()
while true do
  s1,data1 = turtle.inspectUp()
  if s1 then
    print("detect" , data1.name)
    if data1.name == "minecraft:log" then
      turtle.digUp()
      turtle.up()
     else
       print("detect not log")
       break
     end
   else
     print("detect nothing")
     break
  end
end
end

local function FindTree()
while true  do
  print(" find a tree first")
  if turtle.detect() then
    turtle.dig()
    turtle.forward()
    s,data = turtle.inspectUp()
    if s then
      print("detect", data.name)
      if data.name == "minecraft:log" then
        break
       end
    end
  else
  turtle.turnLeft()
  local steps = math.random(1,4)
  for  i=1,steps do
   turtle.dig()
   turtle.forward()
  end
  print("turtle turn left")
  end
end
end

while true do
  FindTree()
  ChopTreeUp()
end