How to Integrate or Inject Authentication authorization module in Modular Approch

Dear All,

I have been trying to integrate Authentication and Authorization module for feature wise application(modular approach) . steps below tried.

1) under app-> Login && Logout folder with module , controller,services. which is getting the top most parent module (login & log out) .
2) how to access the authentication values($cookies.get(AUTH_USER) in nested/ child module.

3) how to share data in modular approach.
4) created login page, and startup page(.html) file. i have attached the folder structure how i am implementing,

Please advice and help . Thanks in advance.

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