Class AuthProviderCatalog

Builds the catalog URL. With a configured MJAPI URL (MJAPI_URI, MJ #5674) the catalog is <MJAPI URL>/auth/providers. Without one it keeps the pre-#5674 behaviour: /auth/providers at the GraphQL endpoint's origin. The catalog is served by the same MJServer instance, mounted ahead of the auth middleware.

Forgets the persisted choice so the next load resolves the default again.

Fetches the public provider catalog.

Never throws and never rejects: a deployment whose server predates this endpoint, or whose network is briefly unavailable, must still reach its login screen through the compiled AUTH_TYPE path. Failure is reported as an empty list.

The catalog stored by Preload; empty when preloading never ran or found nothing.

The provider name persisted by a previous picker choice, if any.

Fetches the catalog and stores it for GetPreloaded. Call this from the app's bootstrap entry point BEFORE the root module is imported.

Decides which provider this page load should bootstrap with.

Precedence: the user's persisted choice, then the row flagged IsDefault, then the first by sequence. A persisted choice that no longer exists in the catalog (the admin disabled it) is discarded rather than honoured, so a removed provider cannot strand a returning user on a login screen that can never succeed.

Records the user's picker choice and reports whether the page must reload to apply it.

A reload is required whenever the chosen provider differs from the one already wired into DI: each browser SDK contributes Angular providers (interceptors, guards, config tokens) at module-definition time, so switching providers cannot be done in a live injector. Choosing the provider that is already active needs no reload — the caller simply calls login().