src/charging-station/UIServiceWorkerBroadcastChannel.ts

   1 import { BroadcastChannelResponse, MessageEvent } from '../types/WorkerBroadcastChannel';
   2 import logger from '../utils/Logger';
   3 import type AbstractUIService from './ui-server/ui-services/AbstractUIService';
   4 import WorkerBroadcastChannel from './WorkerBroadcastChannel';
   5
   6 const moduleName = 'UIServiceWorkerBroadcastChannel';
   7
   8 export default class UIServiceWorkerBroadcastChannel extends WorkerBroadcastChannel {
   9   private uiService: AbstractUIService;
  10
  11   constructor(uiService: AbstractUIService) {
  12     super();
  13     this.uiService = uiService;
  14     this.onmessage = this.responseHandler.bind(this) as (message: MessageEvent) => void;
  15     this.onmessageerror = this.messageErrorHandler.bind(this) as (message: MessageEvent) => void;
  16   }
  17
  18   private responseHandler(messageEvent: MessageEvent): void {
  19     if (this.isRequest(messageEvent.data)) {
  20       return;
  21     }
  22     this.validateMessageEvent(messageEvent);
  23     const [uuid, responsePayload] = messageEvent.data as BroadcastChannelResponse;
  24
  25     this.uiService.sendResponse(uuid, responsePayload);
  26   }
  27
  28   private messageErrorHandler(messageEvent: MessageEvent): void {
  29     logger.error(
  30       `${this.uiService.logPrefix(moduleName, 'messageErrorHandler')} Error at handling message:`,
  31       { messageEvent, messageEventData: messageEvent.data }
  32     );
  33   }
  34 }