function read<
  const C extends readonly string[],
  D extends Partial<Record<C[number], any>> & Record<Exclude<keyof D, C[number]>, never> = {},
>(variables: C, defaults: D): Record<C[number], any> {
  const missing: string[] = []

  const result: Record<string, any> = {}

  for (const variable of variables) {
    let value: string | number | boolean | null | undefined = process.env[variable] || defaults[variable as keyof D]

    if (value === undefined) {
      missing.push(variable)
    } else {
      if (typeof value === 'string') {
        if (/^\d+$/.test(value)) {
          value = Number(value)
        } else if (['false', 'true', 'null', 'undefined'].includes(value)) {
          // oxlint-disable-next-line no-eval
          value = eval(value)
        }
      }
    }

    result[variable] = value
  }

  if (missing.length) {
    throw new Error(`Missing required env variables: ${missing.join(', ')}`)
  }

  return result
}

export default read(
  [
    'DOMAIN',
    'PROTOCOL',
    'HOSTNAME',
    'PORT',
    'FASTIFY_PORT',
    'FASTIFY_HOST',
    'LOG_LEVEL',
    'LOG_STREAM',
    'MAILGUN_API_KEY',
    'NODE_ENV',
    'PGDATABASE',
    'PGHOST',
    'PGPASSWORD',
    'PGPORT',
    'PGUSER',
    'REDIS_HOST',
    'SESSION_SECRET',
  ] as const,
  {
    MAILGUN_API_KEY: 'invalid key',
    PGPASSWORD: null,
    PGPORT: null,
    PGUSER: null,
    SESSION_SECRET: 'this is not very secret but it is long enough',
  },
)