95 lines
2.5 KiB
TypeScript
95 lines
2.5 KiB
TypeScript
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import {
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callModule as callModuleKernel,
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connectModule as connectModuleKernel,
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} from "libkernel";
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import {
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callModule as callModuleModule,
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connectModule as connectModuleModule,
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} from "libkmodule";
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import { EventEmitter } from "events";
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import { DataFn, ErrTuple } from "libskynet";
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import { Buffer } from "buffer";
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const DHT_MODULE = "AQD1IgE4lTZkq1fqdoYGojKRNrSk0YQ_wrHbRtIiHDrnow";
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let callModule: typeof callModuleModule,
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connectModule: typeof connectModuleModule;
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if (window.document) {
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callModule = callModuleKernel;
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connectModule = connectModuleKernel;
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} else {
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callModule = callModuleModule;
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connectModule = connectModuleModule;
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}
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export class DHT {
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public async connect(pubkey: string): Promise<Socket> {
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const [resp, err] = await callModule(DHT_MODULE, "connect", { pubkey });
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if (err) {
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throw err;
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}
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return new Socket(resp.id);
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}
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async ready(): Promise<ErrTuple> {
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return callModule(DHT_MODULE, "ready");
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}
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}
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export class Socket extends EventEmitter {
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private id: number;
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private eventUpdates: { [event: string]: DataFn[] } = {};
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constructor(id: number) {
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super();
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this.id = id;
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}
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on(eventName: string, listener: (...args: any[]) => void): this {
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const [update, promise] = connectModule(
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DHT_MODULE,
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"listenSocketEvent",
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{ id: this.id, event: eventName },
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(data: any) => {
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this.emit(eventName, data);
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}
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);
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this.trackEvent(eventName, update);
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promise.then(() => {
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this.off(eventName, listener);
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});
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return super.on(eventName, listener);
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}
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off(type: string, listener: any): this {
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const updates = [...this.eventUpdates[type]];
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this.eventUpdates[type] = [];
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for (const func of updates) {
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func({ action: "off" });
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}
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return super.off(type, listener);
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}
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write(message: string | Buffer): void {
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callModule(DHT_MODULE, "write", { id: this.id, message });
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}
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end(): void {
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callModule(DHT_MODULE, "close", { id: this.id });
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}
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private ensureEvent(event: string): void {
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if (!(event in this.eventUpdates)) {
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this.eventUpdates[event] = [];
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}
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}
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private trackEvent(event: string, update: DataFn): void {
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this.ensureEvent(event as string);
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this.eventUpdates[event].push(update);
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}
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}
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