typedserver/ts/servertools/tools.serviceworker.ts

import * as plugins from '../plugins.js';
import * as paths from '../paths.js';

import * as interfaces from '../../dist_ts_interfaces/index.js'
import { Handler } from './classes.handler.js';
import type { TypedServer } from '../classes.typedserver.js';
import { HandlerTypedRouter } from './classes.handlertypedrouter.js';

const swBundleJs: string = plugins.smartfile.fs.toStringSync(
  plugins.path.join(paths.serviceworkerBundleDir, './serviceworker.bundle.js')
);
const swBundleJsMap: string = plugins.smartfile.fs.toStringSync(
  plugins.path.join(paths.serviceworkerBundleDir, './serviceworker.bundle.js.map')
);
let swVersionInfo: interfaces.serviceworker.IRequest_Serviceworker_Backend_VersionInfo['response'] =
  null;
const serviceworkerHandler = new Handler(
  'GET',
  async (req, res) => {
    if (req.path === '/serviceworker.bundle.js') {
      res.status(200);
      res.set('Content-Type', 'text/javascript');
      res.write(swBundleJs + '\n' + `/** appSemVer: ${swVersionInfo?.appSemVer || 'not set'} */`);
    } else if (req.path === '/serviceworker.bundle.js.map') {
      res.status(200);
      res.set('Content-Type', 'application/json');
      res.write(swBundleJsMap);
    }
    res.end();
  }
);

export const addServiceWorkerRoute = (
  typedserverInstance: TypedServer,
  swDataFunc: () => interfaces.serviceworker.IRequest_Serviceworker_Backend_VersionInfo['response']
) => {
  // lets the version info as unique string;
  swVersionInfo = swDataFunc();

  // the basic stuff
  typedserverInstance.server.addRoute('/serviceworker.*', serviceworkerHandler);

  // the typed stuff
  const typedrouter = new plugins.typedrequest.TypedRouter();

  typedrouter.addTypedHandler(
    new plugins.typedrequest.TypedHandler<interfaces.serviceworker.IRequest_Serviceworker_Backend_VersionInfo>(
      'serviceworker_versionInfo',
      async (req) => {
        const versionInfoResponse = swDataFunc();
        return versionInfoResponse;
      }
    )
  );

  typedserverInstance.server.addRoute(
    '/sw-typedrequest',
    new HandlerTypedRouter(typedrouter)
  );
};