Working autoaffiliate POC for FC and existing users

[TTalex]

This is a proof of concept of using a magic link to automatically affiliate users to their employer.

The magic link is a regular auth link, with a specific query parameter passed to the redirect page, e.g:

/auth/realms/mcm/protocol/openid-connect/auth?client_id=platform&response_mode=fragment&response_type=code&login=true&redirect_uri=http://localhost:8000/redirection/?autoaffiliate=2219e721-ac71-4a65-a202-37675c74ba58

The new param autoaffiliate contains the entrepriseID that will be linked to the user.

When present on redirect, the user is automatically affiliated, without the need to specify a work email or manual validation. The user is also redirected to its employer incentives page.

Note: this only works for existing account, or accounts created with FranceConnect. Creating a new account using the moB form breaks the context, and we lose track of the autoaffiliate param.

Demo: