Authentication on subdomains and custom domains

[viperfx]

How can we use this library with a multi-tenant application that can have user created subdomains or if the application is accessed via a custom domain.

site1.mydomain.com <- visit site1.mydomain.com/auth and authenticate. Cookies are stored for this domain and share with all subdomains on mydomain.com

site2.customdomain.com <-> mapped to site2.mydomain.com
visit site2.custdomdomain.com/auth and authenticate. Cookies are stored for this domain.

[kmjennison]

I believe Firebase is the limiting factor because it doesn't support wildcard subdomains. The approach detailed in this blog post might work here (you can change the cookies settings with next-firebase-auth), though I haven't thought it through.

If you find an approach that works for you and next-firebase-auth is missing some flexibility to support it, please open an issue.

[viperfx]

Thanks for the reply @kmjennison - I did read that post- but I am not quite clear how firebase functions fit into this - as we are hosting our app through vercel or some other provider.

Is there a chance you could share an example of how it could work with next-firebase-auth?

[kmjennison]

No, unfortunately I don't have the time to line up a demo for this. My recommendation is to start by getting multidomain Firebase working on its own, then see if/where this library falls short in supporting that setup.