/// <reference types="w3c-web-usb" />
import { Interface } from "./interface";

export class WebUSBInterface implements Interface {
  private device: USBDevice;
  constructor(device: USBDevice) {
    this.device = device;
  }

  getPrinterName(): string {
    return [this.device.manufacturerName, this.device.productName]
      .filter(Boolean)
      .join(" ");
  }

  async isPrinterConnected(): Promise<boolean> {
    const device = this.device;
    return new Promise((resolve, reject) => {
      device
        .open()
        .then(() =>
          device.selectConfiguration(
            device.configurations[0].configurationValue
          )
        )
        .then(() => {
          return device.claimInterface(
            device.configuration?.interfaces?.[0].interfaceNumber ?? 0
          );
        })
        .then(() => {
          resolve(true);
        })
        .catch((err) => {
          console.error(err);
          resolve(false);
        });
    });
  }

  async execute(buffer: Uint8Array): Promise<void> {
    const device = this.device;
    return new Promise((resolve, reject) => {
      return device
        .transferOut(1, buffer)
        .then(() => {
          resolve();
        })
        .catch((error) => {
          reject(error);
        });
    });
  }
}