Hi Carl, Is this plant outside or inside? If inside, what type of light are you using? What strain? what size container, what medium, what are you feeding it. what is the light schedule (hopefully 12/12), and how long has it been in this light schedule?
Sativas take a LONG ASS time to flower and finish, what you have there is a very nice looking plant, with lots of bud sites, each of those bud sites will continue to grow and produce but you have to wait.
With some sativas you could have a 14+ week flower period -
Looks like you are doing great man just keep growing it and keep feeding it! There is still plenty of time
EDIT: I see you have said what strain it is in the subject (autoflower purple haze)
I want to warn you that not all autoflowers will truly flower automatically- I have experimented with autos and let me just tell you, I no longer experiment with them or have any interest in them.