sexy/packages/buttplug/src/index.ts

/*!
 * Buttplug JS Source Code File - Visit https://buttplug.io for more info about
 * the project. Licensed under the BSD 3-Clause license. See LICENSE file in the
 * project root for full license information.
 *
 * @copyright Copyright (c) Nonpolynomial Labs LLC. All rights reserved.
 */

import { ButtplugMessage } from "./core/Messages";
import { IButtplugClientConnector } from "./client/IButtplugClientConnector";
import { EventEmitter } from "eventemitter3";

export * from "./client/ButtplugClient";
export * from "./client/ButtplugClientDevice";
export * from "./client/ButtplugBrowserWebsocketClientConnector";
export * from "./client/ButtplugNodeWebsocketClientConnector";
export * from "./client/ButtplugClientConnectorException";
export * from "./utils/ButtplugMessageSorter";
export * from "./client/ButtplugClientDeviceCommand";
export * from "./client/ButtplugClientDeviceFeature";
export * from "./client/IButtplugClientConnector";
export * from "./core/Messages";
export * from "./core/Logging";
export * from "./core/Exceptions";

export class ButtplugWasmClientConnector extends EventEmitter implements IButtplugClientConnector {
  private static _loggingActivated = false;
  private static wasmInstance;
  private _connected: boolean = false;
  private client;
  private serverPtr;

  constructor() {
    super();
  }

  public get Connected(): boolean {
    return this._connected;
  }

  private static maybeLoadWasm = async () => {
    if (ButtplugWasmClientConnector.wasmInstance == undefined) {
      ButtplugWasmClientConnector.wasmInstance = await import("../wasm/index.js");
    }
  };

  public static activateLogging = async (logLevel: string = "debug") => {
    await ButtplugWasmClientConnector.maybeLoadWasm();
    if (this._loggingActivated) {
      console.log("Logging already activated, ignoring.");
      return;
    }
    console.log("Turning on logging.");
    ButtplugWasmClientConnector.wasmInstance.buttplug_activate_env_logger(logLevel);
  };

  public initialize = async (): Promise<void> => {};

  public connect = async (): Promise<void> => {
    await ButtplugWasmClientConnector.maybeLoadWasm();
    this.client = ButtplugWasmClientConnector.wasmInstance.buttplug_create_embedded_wasm_server(
      (msgs) => {
        this.emitMessage(msgs);
      },
      this.serverPtr,
    );
    this._connected = true;
  };

  public disconnect = async (): Promise<void> => {};

  public send = (msg: ButtplugMessage): void => {
    ButtplugWasmClientConnector.wasmInstance.buttplug_client_send_json_message(
      this.client,
      new TextEncoder().encode("[" + JSON.stringify(msg) + "]"),
      (output) => {
        this.emitMessage(output);
      },
    );
  };

  private emitMessage = (msg: Uint8Array) => {
    const str = new TextDecoder().decode(msg);
    const msgs: ButtplugMessage[] = JSON.parse(str);
    this.emit("message", msgs);
  };
}