feat(providers): make issuer configurable on Salesforce (#4658)

Author: balazsorban44

packages/next-auth/src/providers/salesforce.js

@@ -0,0 +1,32 @@
+import type { OAuthConfig, OAuthUserConfig } from "."
+
+export interface SalesforceProfile extends Record<string, any> {
+  sub: string
+  nickname: string
+  email: string
+  picture: string
+}
+
+export default function Salesforce<P extends SalesforceProfile>(
+  options: OAuthUserConfig<P>
+): OAuthConfig<P> {
+  const { issuer = "https://login.salesforce.com" } = options
+  return {
+    id: "salesforce",
+    name: "Salesforce",
+    type: "oauth",
+    authorization: `${issuer}/services/oauth2/authorize?display=page`,
+    token: `${issuer}/services/oauth2/token`,
+    userinfo: `${issuer}/services/oauth2/userinfo`,
+    profile(profile) {
+      return {
+        id: profile.user_id,
+        name: null,
+        email: null,
+        image: profile.picture,
+      }
+    },
+    checks: ["none"],
+    options,
+  }
+}