refactor(core): Port SSO config (#17044)

packages/@n8n/config/src/configs/sso.config.ts

@@ -0,0 +1,48 @@
+import { Config, Env, Nested } from '../decorators';
+
+@Config
+class SamlConfig {
+	/** Whether to enable SAML SSO. */
+	@Env('N8N_SSO_SAML_LOGIN_ENABLED')
+	loginEnabled: boolean = false;
+
+	@Env('N8N_SSO_SAML_LOGIN_LABEL')
+	loginLabel: string = '';
+}
+
+@Config
+class OidcConfig {
+	/** Whether to enable OIDC SSO. */
+	@Env('N8N_SSO_OIDC_LOGIN_ENABLED')
+	loginEnabled: boolean = false;
+}
+
+@Config
+class LdapConfig {
+	/** Whether to enable LDAP SSO. */
+	@Env('N8N_SSO_LDAP_LOGIN_ENABLED')
+	loginEnabled: boolean = false;
+
+	@Env('N8N_SSO_LDAP_LOGIN_LABEL')
+	loginLabel: string = '';
+}
+
+@Config
+export class SsoConfig {
+	/** Whether to create users when they log in via SSO. */
+	@Env('N8N_SSO_JUST_IN_TIME_PROVISIONING')
+	justInTimeProvisioning: boolean = true;
+
+	/** Whether to redirect users from the login dialog to initialize SSO flow. */
+	@Env('N8N_SSO_REDIRECT_LOGIN_TO_SSO')
+	redirectLoginToSso: boolean = true;
+
+	@Nested
+	saml: SamlConfig;
+
+	@Nested
+	oidc: OidcConfig;
+
+	@Nested
+	ldap: LdapConfig;
+}

packages/@n8n/config/src/index.ts

@@ -25,6 +25,7 @@ import { TaskRunnersConfig } from './configs/runners.config';
 import { ScalingModeConfig } from './configs/scaling-mode.config';
 import { SecurityConfig } from './configs/security.config';
 import { SentryConfig } from './configs/sentry.config';
+import { SsoConfig } from './configs/sso.config';
 import { TagsConfig } from './configs/tags.config';
 import { TemplatesConfig } from './configs/templates.config';
 import { UserManagementConfig } from './configs/user-management.config';
@@ -167,6 +168,9 @@ export class GlobalConfig {
 	@Nested
 	personalization: PersonalizationConfig;
 
+	@Nested
+	sso: SsoConfig;
+
 	/** Default locale for the UI. */
 	@Env('N8N_DEFAULT_LOCALE')
 	defaultLocale: string = 'en';

packages/@n8n/config/test/config.test.ts

@@ -331,6 +331,21 @@ describe('GlobalConfig', () => {
 			enabled: true,
 			pruneTime: -1,
 		},
+		sso: {
+			justInTimeProvisioning: true,
+			redirectLoginToSso: true,
+			saml: {
+				loginEnabled: false,
+				loginLabel: '',
+			},
+			oidc: {
+				loginEnabled: false,
+			},
+			ldap: {
+				loginEnabled: false,
+				loginLabel: '',
+			},
+		},
 	};
 
 	it('should use all default values when no env variables are defined', () => {