import * as args from 'args-finder';
import { readFileSync } from 'fs';

const DEFAULT_PORT =
  process.env.WSPECS_PORT || process.env.VIRTUAL_PORT || 1234;
const DEFAULT_INSTANCE = process.env.WSPECS_INSTANCE || 'dev';

let config = {
  instance: args.options.port || DEFAULT_INSTANCE,
  port: args.options.port || DEFAULT_PORT,
  base: process.env.WSPECS_BASE || '',
  sessionAge: Number(process.env.WSPECS_SESSION_AGE || 60),
  viewEngine: process.env.WSPECS_VIEW_ENGINE || 'ejs',
  secret: process.env.WSPECS_SECRET || 'secret',
  cookiePath: process.env.WSPECS_COOKIE_PATH || '/',
  useCookie: process.env.WSPECS_USE_COOKIE || true,
  httpOnly: process.env.WSPECS_HTTP_ONLY || true,
  templatePath:
    process.env.WSPECS_TEMPLATE_PATH ||
    args.options.templatePath ||
    'templates',
  publicPath:
    process.env.WSPECS_PUBLIC_PATH || args.options.publicPath || 'public',
  maxAge: process.env.WSPECS_MAX_AGE || args.options.maxAge || 31557600000,
  controlOrigin: process.env.WSPECS_CONTROL_ORIGIN || '*',
  allowMethods: process.env.WSPECS_ALLOW_METHODS ||
    args.options.allowedMethods || ['GET', 'POST', 'OPTIONS'],
  encryptionAlgorithm:
    process.env.WSPECS_ENCRYPTION_ALGORITHM ||
    args.options.algorithm ||
    'aes-256-cbc',
  encryptionBlocksize:
    process.env.WSPECS_ENCRYPTION_BLOCKSIZE || args.options.blocksize || 16,
  encryptionKey:
    process.env.WSPECS_ENCRYPTION_KEY ||
    args.options.encryption_key ||
    '8D6JCEG7VFOHX4GXXRV7H5C4TR5TSECS'
};

if (args.options.config) {
  config = {
    ...config,
    ...JSON.parse(readFileSync(String(args.options.config), 'utf8'))
  };
}

export const serverConfig = { ...config, ...args.options };