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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { AuthType } from '@gemini-cli/core';
import { loadEnvironment } from './config.js';
export const validateAuthMethod = (authMethod: string): string | null => {
loadEnvironment();
if (authMethod === AuthType.LOGIN_WITH_GOOGLE_PERSONAL) {
return null;
}
if (authMethod === AuthType.LOGIN_WITH_GOOGLE_ENTERPRISE) {
if (!process.env.GOOGLE_CLOUD_PROJECT) {
return 'GOOGLE_CLOUD_PROJECT environment variable not found. Add that to your .env and try again, no reload needed!';
}
return null;
}
if (authMethod === AuthType.USE_GEMINI) {
if (!process.env.GEMINI_API_KEY) {
return 'GEMINI_API_KEY environment variable not found. Add that to your .env and try again, no reload needed!';
}
return null;
}
if (authMethod === AuthType.USE_VERTEX_AI) {
const hasVertexProjectLocationConfig =
!!process.env.GOOGLE_CLOUD_PROJECT && !!process.env.GOOGLE_CLOUD_LOCATION;
const hasGoogleApiKey = !!process.env.GOOGLE_API_KEY;
if (!hasVertexProjectLocationConfig && !hasGoogleApiKey) {
return (
'Must specify GOOGLE_GENAI_USE_VERTEXAI=true and either:\n' +
'• GOOGLE_CLOUD_PROJECT and GOOGLE_CLOUD_LOCATION environment variables.\n' +
'• GOOGLE_API_KEY environment variable (if using express mode).\n' +
'Update your .env and try again, no reload needed!'
);
}
return null;
}
return 'Invalid auth method selected.';
};
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