Endpoint to trigger automatic SSO login

[PhilippMundhenk]

Describe the solution you'd like

1. Awesome solution! I love it! Thank you so much!
2. It would be great to have an endpoint to redirect the user to that triggers SSO (basically the same as the SSO button on the sign-in page). If the user is already logged in, this would directly redirect the user to her homepage.

Type of feature

User Experience (UX)

Additional context

No response

[PhilippMundhenk]

I believe the link would need to be created based on the SSO settings (so might need to differ for each SSO, e.g., /login_<sso_name>) and look something like:

<settings.sso_name.authorization_endpoint>?client_id=<settings.sso_name.client_id>&redirect_uri=<redirect_url>&state=<??? auth.signin.Authelia-1>&response_type=code&scope=<settings.sso_name.scopes>

so, e.g., for Authelia:

https://authelia.example.com/api/oidc/authorization?client_id=memos&redirect_uri=https://memos.example.com/auth/callback&state=auth.signin.Authelia-1&response_type=code&scope=openid%20profile%20email