Code to support Oauth login (#881)

packages/core/src/code_assist/setup.ts

@@ -0,0 +1,56 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { OAuth2Client } from 'google-auth-library';
+
+import { ClientMetadata } from './metadata.js';
+import { doLoadCodeAssist, LoadCodeAssistResponse } from './load.js';
+import { doGCALogin } from './login.js';
+import {
+  doOnboardUser,
+  LongrunningOperationResponse,
+  OnboardUserRequest,
+} from './onboard.js';
+
+export async function doSetup(): Promise<string> {
+  const oauth2Client: OAuth2Client = await doGCALogin();
+  const clientMetadata: ClientMetadata = {
+    ideType: 'IDE_UNSPECIFIED',
+    ideVersion: null,
+    pluginVersion: null,
+    platform: 'PLATFORM_UNSPECIFIED',
+    updateChannel: null,
+    duetProject: 'aipp-internal-testing',
+    pluginType: 'GEMINI',
+    ideName: null,
+  };
+
+  // Call LoadCodeAssist.
+  const loadCodeAssistRes: LoadCodeAssistResponse = await doLoadCodeAssist(
+    {
+      cloudaicompanionProject: 'aipp-internal-testing',
+      metadata: clientMetadata,
+    },
+    oauth2Client,
+  );
+
+  // Call OnboardUser until long running operation is complete.
+  const onboardUserReq: OnboardUserRequest = {
+    tierId: 'legacy-tier',
+    cloudaicompanionProject: loadCodeAssistRes.cloudaicompanionProject || '',
+    metadata: clientMetadata,
+  };
+  let lroRes: LongrunningOperationResponse = await doOnboardUser(
+    onboardUserReq,
+    oauth2Client,
+  );
+  while (!lroRes.done) {
+    await new Promise((f) => setTimeout(f, 5000));
+    lroRes = await doOnboardUser(onboardUserReq, oauth2Client);
+  }
+
+  return lroRes.response?.cloudaicompanionProject?.id || '';
+}