export default defineNitroPlugin(() => {
  const required = [
    'MONGODB_URI',
    'JWT_SECRET',
    'RESEND_API_KEY',
    'HELCIM_API_TOKEN',
    'NUXT_PUBLIC_HELCIM_TOKEN',
  ]

  const missing = required.filter((key) => {
    // Check both process.env and runtime config where applicable
    if (key === 'JWT_SECRET') {
      const config = useRuntimeConfig()
      return !config.jwtSecret
    }
    return !process.env[key]
  })

  if (missing.length > 0) {
    console.error(`FATAL: Missing required environment variables: ${missing.join(', ')}`)
    console.error('Set these in your .env file or environment variables.')
    process.exit(1)
  }
})