How to send location routes from server to android/iOS app?

Okay i'm working on a project and i want to this:

User inputs source and destination(or source is taken from current location) and sends these two to a server. Server then processes these inputs and sends back a route between the two places. I don't want to use the Google API directly in the app because i want the server to transmit more data, like print amount of traffic, etc to the app. Should i just use the Google API? I have no idea how to start...

I'm doing it using Node.js/MongoDB (MEAN STACK PROJECT)

via Kalyan Rangarajan