Can workflow be auto approved ?

Hello Experts ,

We are on Sourcing 10  and have a requirement to implement workflow for project document . The workflow needs to be explicitly approved for a scenario . We are trying to find if we can do it by any script . Is it possible to approve workflow by some script. We are using multi level sequential workflow , it needs to approved 1st level by some script and it should go to 2nd approver who will approve as normal system approval .

Also is it possible to do auto approval if the workflow is pending with approver for few days time ?

Thanks for your help

Thanks

Sudipta