feat(provider): add United Effects provider

docs/docs/providers/united-effects.md

@@ -0,0 +1,39 @@
+---
+id: united-effects
+title: United Effects
+---
+
+## Documentation
+
+https://docs.unitedeffects.com/integrations/nextauthjs
+
+## Configuration
+
+https://core.unitedeffects.com
+
+## Options
+
+The **United Effects Provider** comes with a set of default options:
+
+- [United Effects Provider options](https://github.com/nextauthjs/next-auth/blob/main/packages/next-auth/src/providers/united-effects.ts)
+
+You can override any of the options to suit your own use case.
+
+## Example
+
+```js
+import UnitedEffectsProvider from "next-auth/providers/united-effects";
+...
+providers: [
+  UnitedEffectsProvider({
+    clientId: process.env.UNITED_EFFECTS_CLIENT_ID,
+    clientSecret: process.env.UNITED_EFFECTS_CLIENT_SECRET,
+    issuer: process.env.UNITED_EFFECTS_ISSUER
+  })
+]
+...
+```
+
+:::note
+`issuer` should be the fully qualified URL including your Auth Group ID – e.g. `https://auth.unitedeffects.com/YQpbQV5dbW-224dCovz-3`
+:::

packages/next-auth/src/providers/united-effects.ts

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+import type { OAuthConfig, OAuthUserConfig } from "."
+
+export interface UnitedEffectsProfile extends Record<string, any> {
+  sub: string
+  email: string
+}
+
+export default function UnitedEffects<P extends UnitedEffectsProfile>(
+  options: OAuthUserConfig<P>
+): OAuthConfig<P> {
+  return {
+    id: "united-effects",
+    name: "United Effects",
+    wellKnown: `${options.issuer}/.well-known/openid-configuration`,
+    type: "oauth",
+    authorization: {
+      params: { scope: "openid email profile", resource: options.issuer },
+    },
+    checks: ["pkce", "state"],
+    idToken: true,
+    profile(profile) {
+      return {
+        id: profile.sub,
+        email: profile.email,
+      }
+    },
+    options,
+  }
+}