import { config } from '@erect/core/config';
import {
  BuildEnvHookParams,
  buildEnvHook,
} from '../hooks/buildEnv';

buildEnvHook.addFilter('default', (env, { buildOptions: { development, target } }) => {
  const isDev = development;
  const isProd = !isDev;
  const isClient = target === 'client';
  const isServer = target === 'server';
  const isNode = !isClient;

  return {
    ...env,
    // It is really important to use NODE_ENV=production in order to use
    // optimised versions of some node_modules, such as React.
    NODE_ENV: development ? 'development' : 'production',
    // Is this the "client" bundle?
    BUILD_FLAG_IS_CLIENT: JSON.stringify(isClient),
    // Is this the "server" bundle?
    BUILD_FLAG_IS_SERVER: JSON.stringify(isServer),
    // Is this a node bundle?
    BUILD_FLAG_IS_NODE: JSON.stringify(isNode),
    // Is this a development build?
    BUILD_FLAG_IS_DEV: JSON.stringify(development),
    // If onfline service worker is enabled, if false will remove from bundle
    OFFLINE_SERVICE_WORKER_ENABLED: JSON.stringify(config.offlineServiceWorker.enabled),
    // If onfline service worker is enabled, if false will remove from bundle
    SOURCE_MAP_ENABLED: JSON.stringify(config.includeSourceMapsForOptimisedClientBundle),
    // Set environment for fix trailling slash
    FIX_TRAILING_SLASH: JSON.stringify(config.fixTrailingSlash),
  };
}, { priority: 50 });

export const createBuildEnv = (config: BuildEnvHookParams) => {
  return buildEnvHook.filter({}, config);
};