Environment Variables

NEXT_PUBLIC_API_URL=http://localhost:3001/api

NEXT_PUBLIC_API_URL=https://api-staging.example.com

NEXT_PUBLIC_API_URL=https://api.example.com

NEXT_PUBLIC_API_VERSION=v2

API_TIMEOUT=60000

NEXT_PUBLIC_AUTH_ENABLED=true

JWT_SECRET=your-super-secret-key-change-in-production

SESSION_SECRET=another-secret-key-for-sessions

TOKEN_EXPIRY=24h

GOOGLE_CLIENT_ID=123456789-abcdef.apps.googleusercontent.com
GOOGLE_CLIENT_SECRET=GOCSPX-abc123def456

GITHUB_CLIENT_ID=Iv1.1234567890abcdef
GITHUB_CLIENT_SECRET=1234567890abcdef1234567890abcdef12345678

DATABASE_URL=postgresql://user:password@localhost:5432/mydb

DATABASE_URL=mongodb://user:password@localhost:27017/mydb

DATABASE_URL=mysql://user:password@localhost:3306/mydb

NEXT_PUBLIC_GA_ID=G-XXXXXXXXXX

NEXT_PUBLIC_SEGMENT_KEY=abc123def456ghi789

NEXT_PUBLIC_ENABLE_BETA_FEATURES=false
NEXT_PUBLIC_ENABLE_ANALYTICS=true
NEXT_PUBLIC_ENABLE_NOTIFICATIONS=true

AWS_S3_BUCKET=my-app-uploads
AWS_ACCESS_KEY_ID=AKIAIOSFODNN7EXAMPLE
AWS_SECRET_ACCESS_KEY=wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
AWS_REGION=us-east-1

SMTP_HOST=smtp.gmail.com
SMTP_PORT=587
SMTP_USER=your-email@gmail.com
SMTP_PASSWORD=your-app-password
FROM_EMAIL=noreply@example.com

NODE_ENV=development
PORT=3000
NEXT_PUBLIC_APP_URL=http://localhost:3000

NODE_ENV=production
PORT=80
NEXT_PUBLIC_APP_URL=https://example.com

// Only NEXT_PUBLIC_ prefixed variables are available
const apiUrl = process.env.NEXT_PUBLIC_API_URL;
const gaId = process.env.NEXT_PUBLIC_GA_ID;

console.log('API URL:', apiUrl);

// All environment variables are available
const apiUrl = process.env.NEXT_PUBLIC_API_URL;
const dbUrl = process.env.DATABASE_URL;
const jwtSecret = process.env.JWT_SECRET;

console.log('Database:', dbUrl);

// Define types for environment variables
interface Env {
  NEXT_PUBLIC_API_URL: string;
  NEXT_PUBLIC_GA_ID?: string;
  DATABASE_URL: string;
  JWT_SECRET: string;
}

const env = process.env as unknown as Env;

const apiUrl = env.NEXT_PUBLIC_API_URL;

# Local development overrides (not committed to git)
NEXT_PUBLIC_API_URL=http://localhost:3001/api
DATABASE_URL=postgresql://localhost:5432/mydb_dev

# Development environment defaults
NEXT_PUBLIC_API_URL=http://localhost:3001/api
NEXT_PUBLIC_ENABLE_BETA_FEATURES=true

# Production environment
NEXT_PUBLIC_API_URL=https://api.example.com
NEXT_PUBLIC_ENABLE_ANALYTICS=true
NEXT_PUBLIC_ENABLE_BETA_FEATURES=false

const requiredEnvVars = [
  'NEXT_PUBLIC_API_URL',
  'DATABASE_URL',
  'JWT_SECRET'
];

requiredEnvVars.forEach((envVar) => {
  if (!process.env[envVar]) {
    throw new Error(`Missing required environment variable: ${envVar}`);
  }
});

export function validateEnv() {
  console.log('✓ All required environment variables are set');
}