feat(providers): Add Riot Games RSO Provider

[ArkShocer]

☕️ Reasoning

Adding Riot Games RSO Provider. Tested it with the current stable next-auth version 4.24.7 on nextjs 14.2.3

🧢 Checklist

• Documentation
• Tests
• Ready to be merged

🎫 Affected issues

📌 Resources

• Security guidelines
• Contributing guidelines
• Code of conduct
• Contributing to Open Source

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
auth-docs	❌ Failed (Inspect)			May 15, 2024 1:00pm

1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
next-auth-docs	⬜️ Ignored (Inspect)	Visit Preview		May 15, 2024 1:00pm

[vercel]

@ArkShocer is attempting to deploy a commit to the authjs Team on Vercel.

A member of the Team first needs to authorize it.

[ndom91]

In this section, maybe we just take that callout warning out of the callout, i.e. just put that as regular text under this heading. And then remove the superfluous example at the bottom. It's not adding anything new that the above examples aren't, right?

Also it uses the pages router path and doesn't use the env var inference, so it could be confusing to new users

[ndom91]

Because this seems to be an openid-connect compatible provider, this can be significantly simplified. Can you give this version a shot and let me know if it still works for you?

Also, please double check the profile return values. We need them to be id, name, email, image. Since that's what all next-auth users will have in their database via the default schemas, for example. We can't just return any fields we want here (by default). Maybe adding some additional scopes (like account or profile) will include the required fields in the id_token response? (see for example: https://gist.github.com/Henrik-3/d6b631fb7c61821bc16b17cd347a3811#sending-users-to-your-rso-page)

export default function RSO<P extends RSOProfile>(
  options: OAuthUserConfig<P>
): OAuthConfig<P> {
  return {
    id: "rso",
    name: "Riot Sign On",
    type: "oidc",
    issuer: "https://auth.riotgames.com",
    authorization: {
      params: {
        scope: "openid offline_access access_tokens cpid",
      },
    },
    profile(profile) {
      return {
        id: profile.sub,
        name: profile.sub,
        email: profile.cpid,
        image: profile.jiti,
      }
    },
    style: {
      brandColor: "#f05b5e"
    },
    options
  }
}