| 1 | import { type 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 | const validatedMessageEvent = this.validateMessageEvent(messageEvent); |
| 33 | if (validatedMessageEvent === false) { |
| 34 | return; |
| 35 | } |
| 36 | if (this.isRequest(validatedMessageEvent.data) === true) { |
| 37 | return; |
| 38 | } |
| 39 | const [uuid, responsePayload] = validatedMessageEvent.data as BroadcastChannelResponse; |
| 40 | if (this.responses.has(uuid) === false) { |
| 41 | this.responses.set(uuid, { |
| 42 | responsesExpected: this.uiService.getBroadcastChannelExpectedResponses(uuid), |
| 43 | responsesReceived: 1, |
| 44 | responses: [responsePayload], |
| 45 | }); |
| 46 | } else if ( |
| 47 | this.responses.get(uuid)?.responsesReceived <= this.responses.get(uuid)?.responsesExpected |
| 48 | ) { |
| 49 | this.responses.get(uuid).responsesReceived++; |
| 50 | this.responses.get(uuid).responses.push(responsePayload); |
| 51 | } |
| 52 | if ( |
| 53 | this.responses.get(uuid)?.responsesReceived === this.responses.get(uuid)?.responsesExpected |
| 54 | ) { |
| 55 | this.uiService.sendResponse(uuid, this.buildResponsePayload(uuid)); |
| 56 | this.responses.delete(uuid); |
| 57 | this.uiService.deleteBroadcastChannelRequest(uuid); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | private buildResponsePayload(uuid: string): ResponsePayload { |
| 62 | const responsesStatus = |
| 63 | this.responses |
| 64 | .get(uuid) |
| 65 | ?.responses.every(({ status }) => status === ResponseStatus.SUCCESS) === true |
| 66 | ? ResponseStatus.SUCCESS |
| 67 | : ResponseStatus.FAILURE; |
| 68 | return { |
| 69 | status: responsesStatus, |
| 70 | hashIdsSucceeded: this.responses |
| 71 | .get(uuid) |
| 72 | ?.responses.map(({ status, hashId }) => { |
| 73 | if (status === ResponseStatus.SUCCESS) { |
| 74 | return hashId; |
| 75 | } |
| 76 | }) |
| 77 | .filter((hashId) => hashId !== undefined), |
| 78 | ...(responsesStatus === ResponseStatus.FAILURE && { |
| 79 | hashIdsFailed: this.responses |
| 80 | .get(uuid) |
| 81 | ?.responses.map(({ status, hashId }) => { |
| 82 | if (status === ResponseStatus.FAILURE) { |
| 83 | return hashId; |
| 84 | } |
| 85 | }) |
| 86 | .filter((hashId) => hashId !== undefined), |
| 87 | }), |
| 88 | ...(responsesStatus === ResponseStatus.FAILURE && { |
| 89 | responsesFailed: this.responses |
| 90 | .get(uuid) |
| 91 | ?.responses.map((response) => { |
| 92 | if (response.status === ResponseStatus.FAILURE) { |
| 93 | return response; |
| 94 | } |
| 95 | }) |
| 96 | .filter((response) => response !== undefined), |
| 97 | }), |
| 98 | }; |
| 99 | } |
| 100 | |
| 101 | private messageErrorHandler(messageEvent: MessageEvent): void { |
| 102 | logger.error( |
| 103 | `${this.uiService.logPrefix(moduleName, 'messageErrorHandler')} Error at handling message:`, |
| 104 | messageEvent |
| 105 | ); |
| 106 | } |
| 107 | } |