| 1 | import { WorkerBroadcastChannel } from './WorkerBroadcastChannel'; |
| 2 | import { |
| 3 | type BroadcastChannelResponse, |
| 4 | type BroadcastChannelResponsePayload, |
| 5 | type MessageEvent, |
| 6 | type ResponsePayload, |
| 7 | ResponseStatus, |
| 8 | } from '../../types'; |
| 9 | import { isNullOrUndefined, logger } from '../../utils'; |
| 10 | import type { AbstractUIService } from '../ui-server/ui-services/AbstractUIService'; |
| 11 | |
| 12 | const moduleName = 'UIServiceWorkerBroadcastChannel'; |
| 13 | |
| 14 | interface Responses { |
| 15 | responsesExpected: number; |
| 16 | responsesReceived: number; |
| 17 | responses: BroadcastChannelResponsePayload[]; |
| 18 | } |
| 19 | |
| 20 | export class UIServiceWorkerBroadcastChannel extends WorkerBroadcastChannel { |
| 21 | private readonly uiService: AbstractUIService; |
| 22 | private readonly responses: Map<string, Responses>; |
| 23 | |
| 24 | constructor(uiService: AbstractUIService) { |
| 25 | super(); |
| 26 | this.uiService = uiService; |
| 27 | this.onmessage = this.responseHandler.bind(this) as (message: unknown) => void; |
| 28 | this.onmessageerror = this.messageErrorHandler.bind(this) as (message: unknown) => void; |
| 29 | this.responses = new Map<string, Responses>(); |
| 30 | } |
| 31 | |
| 32 | private responseHandler(messageEvent: MessageEvent): void { |
| 33 | const validatedMessageEvent = this.validateMessageEvent(messageEvent); |
| 34 | if (validatedMessageEvent === false) { |
| 35 | return; |
| 36 | } |
| 37 | if (this.isRequest(validatedMessageEvent.data) === true) { |
| 38 | return; |
| 39 | } |
| 40 | const [uuid, responsePayload] = validatedMessageEvent.data as BroadcastChannelResponse; |
| 41 | if (this.responses.has(uuid) === false) { |
| 42 | this.responses.set(uuid, { |
| 43 | responsesExpected: this.uiService.getBroadcastChannelExpectedResponses(uuid), |
| 44 | responsesReceived: 1, |
| 45 | responses: [responsePayload], |
| 46 | }); |
| 47 | } else if ( |
| 48 | this.responses.get(uuid)!.responsesReceived <= this.responses.get(uuid)!.responsesExpected |
| 49 | ) { |
| 50 | ++this.responses.get(uuid)!.responsesReceived; |
| 51 | this.responses.get(uuid)?.responses.push(responsePayload); |
| 52 | } |
| 53 | if ( |
| 54 | this.responses.get(uuid)?.responsesReceived === this.responses.get(uuid)?.responsesExpected |
| 55 | ) { |
| 56 | this.uiService.sendResponse(uuid, this.buildResponsePayload(uuid)); |
| 57 | this.responses.delete(uuid); |
| 58 | this.uiService.deleteBroadcastChannelRequest(uuid); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | private buildResponsePayload(uuid: string): ResponsePayload { |
| 63 | const responsesStatus = |
| 64 | this.responses |
| 65 | .get(uuid) |
| 66 | ?.responses.every(({ status }) => status === ResponseStatus.SUCCESS) === true |
| 67 | ? ResponseStatus.SUCCESS |
| 68 | : ResponseStatus.FAILURE; |
| 69 | return { |
| 70 | status: responsesStatus, |
| 71 | hashIdsSucceeded: this.responses |
| 72 | .get(uuid) |
| 73 | ?.responses.filter(({ hashId }) => !isNullOrUndefined(hashId)) |
| 74 | .map(({ status, hashId }) => { |
| 75 | if (status === ResponseStatus.SUCCESS) { |
| 76 | return hashId; |
| 77 | } |
| 78 | }) as string[], |
| 79 | ...(responsesStatus === ResponseStatus.FAILURE && { |
| 80 | hashIdsFailed: this.responses |
| 81 | .get(uuid) |
| 82 | ?.responses.filter(({ hashId }) => !isNullOrUndefined(hashId)) |
| 83 | .map(({ status, hashId }) => { |
| 84 | if (status === ResponseStatus.FAILURE) { |
| 85 | return hashId; |
| 86 | } |
| 87 | }) as string[], |
| 88 | }), |
| 89 | ...(responsesStatus === ResponseStatus.FAILURE && { |
| 90 | responsesFailed: this.responses |
| 91 | .get(uuid) |
| 92 | ?.responses.filter((response) => !isNullOrUndefined(response)) |
| 93 | .map((response) => { |
| 94 | if (response.status === ResponseStatus.FAILURE) { |
| 95 | return response; |
| 96 | } |
| 97 | }) as BroadcastChannelResponsePayload[], |
| 98 | }), |
| 99 | }; |
| 100 | } |
| 101 | |
| 102 | private messageErrorHandler(messageEvent: MessageEvent): void { |
| 103 | logger.error( |
| 104 | `${this.uiService.logPrefix(moduleName, 'messageErrorHandler')} Error at handling message:`, |
| 105 | messageEvent, |
| 106 | ); |
| 107 | } |
| 108 | } |