Implementing Social Media Login in Backend Systems

Backend
1

Hey folks, I need some help with my backend setup!

I’m working on a project where users can log in using their email, Twitter, or Facebook accounts. I’ve got the Facebook login working on the front end, but I’m stuck on how to handle it on the server side.

Here’s what I’m wondering:

  1. After a successful Facebook login, how do I send the user’s info to my server?
  2. How can my server verify that a user is actually logged in when they make requests?
  3. What’s the deal with the Facebook app I created? How does it fit into all this?

I’ve got this code snippet for handling the Facebook session, but I’m not sure what to do next:

func handleSessionChange(session: Session, state: SessionState, error: Error?) {
    switch state {
    case .active:
        if error == nil {
            print("User logged in successfully")
        }
    case .closed, .failed:
        Session.current.logout()
    default:
        break
    }
}

Any tips or explanations would be super helpful. Thanks!

2

yo alex, i’ve dealt with this before. after fb login, send the access token to ur server. ur server can use it to verify with fb’s api. the fb app u made is like ur app’s id for fb. make sure to keep tokens safe! lmk if u need more help

3

hey there! i’m curious about ur project. have u considered using oauth 2.0 for handling social logins? it’s pretty nifty for this kinda stuff. how r u storing user data on ur backend? and what language/framework are u using for the server? maybe we could brainstorm some ideas together!

4

I’ve implemented social media login in several projects, and here’s what I’ve learned:

After a successful Facebook login, you typically receive an access token. Send this token to your server along with any other user information you need.

For server-side verification, use the access token to make API calls to Facebook. This process confirms the token’s validity and retrieves the necessary user data.

The Facebook app you created acts as a bridge between your application and Facebook’s services. It provides the credentials, such as the App ID and App Secret, required for server communication with Facebook’s API.

In your server code, set up endpoints to receive the token, verify it with Facebook, and then create or update user records in your database. Consider using a library like Passport.js for Node.js to simplify OAuth integration.

Always remember to securely handle and store user data and authentication tokens.