Transit in Shanghai Pudong

Hi, i would like to ask something: my flight will be from jakarta to Paris and transit 3 hours in Shanghai.
I will be landed in Pudong terminal 2, I must go through the immigration ( is there any special transit line in pudong terminal 2 immigration ? ) then I will to take my baggage and go to Pudong terminal 1.
Is 3 hours transit time enough?
Do I need a visa to transit in Shanghai? - I'm holding Indonesia pasport.
How long do I need to walk from terminal 2 to terminal 1 in Pudong?

Thank you