| 1 | import { ResponsePayload, ResponseStatus } from '../types/UIProtocol'; |
| 2 | import type { |
| 3 | BroadcastChannelResponse, |
| 4 | BroadcastChannelResponsePayload, |
| 5 | MessageEvent, |
| 6 | } from '../types/WorkerBroadcastChannel'; |
| 7 | import logger from '../utils/Logger'; |
| 8 | import type AbstractUIService from './ui-server/ui-services/AbstractUIService'; |
| 9 | import WorkerBroadcastChannel from './WorkerBroadcastChannel'; |
| 10 | |
| 11 | const moduleName = 'UIServiceWorkerBroadcastChannel'; |
| 12 | |
| 13 | type Responses = { |
| 14 | responsesExpected: number; |
| 15 | responsesReceived: number; |
| 16 | responses: BroadcastChannelResponsePayload[]; |
| 17 | }; |
| 18 | |
| 19 | export default class UIServiceWorkerBroadcastChannel extends WorkerBroadcastChannel { |
| 20 | private readonly uiService: AbstractUIService; |
| 21 | private readonly responses: Map<string, Responses>; |
| 22 | |
| 23 | constructor(uiService: AbstractUIService) { |
| 24 | super(); |
| 25 | this.uiService = uiService; |
| 26 | this.onmessage = this.responseHandler.bind(this) as (message: MessageEvent) => void; |
| 27 | this.onmessageerror = this.messageErrorHandler.bind(this) as (message: MessageEvent) => void; |
| 28 | this.responses = new Map<string, Responses>(); |
| 29 | } |
| 30 | |
| 31 | private responseHandler(messageEvent: MessageEvent): void { |
| 32 | if (this.isRequest(messageEvent.data)) { |
| 33 | return; |
| 34 | } |
| 35 | const [uuid, responsePayload] = this.validateMessageEvent(messageEvent) |
| 36 | .data as BroadcastChannelResponse; |
| 37 | if (this.responses.has(uuid) === false) { |
| 38 | this.responses.set(uuid, { |
| 39 | responsesExpected: this.uiService.getBroadcastChannelExpectedResponses(uuid), |
| 40 | responsesReceived: 1, |
| 41 | responses: [responsePayload], |
| 42 | }); |
| 43 | } else if ( |
| 44 | this.responses.get(uuid)?.responsesReceived <= this.responses.get(uuid)?.responsesExpected |
| 45 | ) { |
| 46 | this.responses.get(uuid).responsesReceived++; |
| 47 | this.responses.get(uuid).responses.push(responsePayload); |
| 48 | } |
| 49 | if ( |
| 50 | this.responses.get(uuid)?.responsesReceived === this.responses.get(uuid)?.responsesExpected |
| 51 | ) { |
| 52 | this.uiService.sendResponse(uuid, this.buildResponsePayload(uuid)); |
| 53 | this.responses.delete(uuid); |
| 54 | this.uiService.deleteBroadcastChannelRequest(uuid); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | private buildResponsePayload(uuid: string): ResponsePayload { |
| 59 | const responsesStatus = this.responses |
| 60 | .get(uuid) |
| 61 | ?.responses.every((response) => response.status === ResponseStatus.SUCCESS) |
| 62 | ? ResponseStatus.SUCCESS |
| 63 | : ResponseStatus.FAILURE; |
| 64 | return { |
| 65 | status: responsesStatus, |
| 66 | hashIdsSucceeded: this.responses |
| 67 | .get(uuid) |
| 68 | ?.responses.map(({ status, hashId }) => { |
| 69 | if (status === ResponseStatus.SUCCESS) { |
| 70 | return hashId; |
| 71 | } |
| 72 | }) |
| 73 | .filter((hashId) => hashId !== undefined), |
| 74 | ...(responsesStatus === ResponseStatus.FAILURE && { |
| 75 | hashIdsFailed: this.responses |
| 76 | .get(uuid) |
| 77 | ?.responses.map(({ status, hashId }) => { |
| 78 | if (status === ResponseStatus.FAILURE) { |
| 79 | return hashId; |
| 80 | } |
| 81 | }) |
| 82 | .filter((hashId) => hashId !== undefined), |
| 83 | }), |
| 84 | }; |
| 85 | } |
| 86 | |
| 87 | private messageErrorHandler(messageEvent: MessageEvent): void { |
| 88 | logger.error( |
| 89 | `${this.uiService.logPrefix(moduleName, 'messageErrorHandler')} Error at handling message:`, |
| 90 | { messageEvent } |
| 91 | ); |
| 92 | } |
| 93 | } |