Hello and thank you for the quick response.
Previous reply from sanket helped me a lot, since our gmail integration with oauth 1.0 stopped working, and i recently got in charge of the project, with no previous experience with oauth protocol, so i was a bit confused.
I am following your api documentation for oauth 2.0 workflow, so i believe i will be able to implement it to the current project.
Thank you very much Sanket again for pointing me in the right direction, and thank you David for the quick response about deprecated API.
Cheers.