import { z } from 'zod';
import dotenv from 'dotenv';
// Load environment variables
dotenv.config();
/**
* Environment configuration with validation
*/
export const EnvironmentSchema = z.object({
// Server
NODE_ENV: z.enum(['development', 'staging', 'production', 'test']).default(process.env.JEST_WORKER_ID ? 'test' : 'development'),
PORT: z.string().transform(Number).default('8080'),
LOG_LEVEL: z.enum(['error', 'warn', 'info', 'debug']).default('info'),
// GCP
GCP_PROJECT_ID: z.string(),
GCP_REGION: z.string().default('us-central1'),
// Workload Identity Federation
WORKLOAD_IDENTITY_POOL_ID: z.string(),
WORKLOAD_IDENTITY_PROVIDER_ID: z.string(),
MCP_SERVICE_ACCOUNT_EMAIL: z.string().email(),
// Google Workspace
GOOGLE_WORKSPACE_CLIENT_ID: z.string(),
GOOGLE_WORKSPACE_DOMAIN: z.string(),
GOOGLE_WORKSPACE_ALLOWED_GROUPS: z.string().optional().transform(val =>
val ? val.split(',').map(g => g.trim()) : undefined
),
// BigQuery
BIGQUERY_LOCATION: z.string().default('US'),
BIGQUERY_MAX_RETRIES: z.string().transform(Number).default('3'),
BIGQUERY_TIMEOUT: z.string().transform(Number).default('60000'),
});
export type Environment = z.infer<typeof EnvironmentSchema>;
/**
* Parse and validate environment variables
*/
export function loadEnvironment(): Environment {
try {
return EnvironmentSchema.parse(process.env);
} catch (error) {
console.error('Environment validation failed:', error);
throw new Error('Invalid environment configuration');
}
}
/**
* Get environment singleton
*/
let envInstance: Environment | null = null;
export function getEnvironment(): Environment {
if (!envInstance) {
envInstance = loadEnvironment();
}
return envInstance;
}
