auth-node: added createOAuthProviderFactory

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/auth-node/src/oauth/createOAuthProviderFactory.ts

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2023 The Backstage Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import { AuthProviderFactory, SignInResolver } from '../types';
+import { OAuthEnvironmentHandler } from './OAuthEnvironmentHandler';
+import { createOAuthRouteHandlers } from './createOAuthRouteHandlers';
+import { OAuthStateTransform } from './state';
+import {
+  OAuthAuthenticator,
+  OAuthAuthenticatorResult,
+  OAuthProfileTransform,
+} from './types';
+
+/** @public */
+export function createOAuthProviderFactory<TProfile>(options: {
+  authenticator: OAuthAuthenticator<unknown, TProfile>;
+  stateTransform?: OAuthStateTransform;
+  profileTransform?: OAuthProfileTransform<TProfile>;
+  signInResolver?: SignInResolver<OAuthAuthenticatorResult<TProfile>>;
+}): AuthProviderFactory {
+  return ctx => {
+    return OAuthEnvironmentHandler.mapConfig(ctx.config, envConfig => {
+      return createOAuthRouteHandlers<TProfile>({
+        authenticator: options.authenticator,
+        appUrl: ctx.globalConfig.appUrl,
+        baseUrl: ctx.globalConfig.baseUrl,
+        config: envConfig,
+        isOriginAllowed: ctx.globalConfig.isOriginAllowed,
+        cookieConfigurer: ctx.globalConfig.cookieConfigurer,
+        providerId: ctx.providerId,
+        resolverContext: ctx.resolverContext,
+        stateTransform: options.stateTransform,
+        profileTransform: options.profileTransform,
+        signInResolver: options.signInResolver,
+      });
+    });
+  };
+}

plugins/auth-node/src/oauth/index.ts

@@ -25,6 +25,7 @@ export {
   type PassportOAuthResult,
 } from './PassportOAuthAuthenticatorHelper';
 export { OAuthEnvironmentHandler } from './OAuthEnvironmentHandler';
+export { createOAuthProviderFactory } from './createOAuthProviderFactory';
 export {
   createOAuthAuthenticator,
   type OAuthAuthenticator,