import { Interface } from "./interface";

export class PrinterInterface implements Interface {
  public driver: any;
  private name: string;

  /**
   * @param printerName Name of the printer
   * @param driver Drivers to use. e.g.: const driver = require('printer') OR const driver = require('electron-printer');
   */
  constructor(printerName: string, driver: any) {
    this.name = printerName;
    if (driver && typeof driver === "object") {
      this.driver = driver;
    } else {
      throw new Error("No driver set!");
    }
  }

  getPrinterName() {
    var name = this.name;
    if (!name || name === "auto") {
      const pl = this.driver.getPrinters().filter((p: any) => {
        return p.attributes.indexOf("RAW-ONLY") > -1;
      });
      if (pl.length > 0) {
        name = pl[0].name;
      }
    }
    if (!name || name === "auto") {
      throw new Error(
        "A RAW-ONLY Printer could not be detected. Please configure a Printer-Name"
      );
    }
    return name;
  }

  async isPrinterConnected(): Promise<boolean> {
    const foundPrinter = this.driver.getPrinter(this.getPrinterName());
    if (foundPrinter && foundPrinter.status.indexOf("NOT-AVAILABLE") === -1) {
      return true;
    } else {
      return false;
    }
  }

  async execute(buffer: Uint8Array): Promise<void> {
    return new Promise((resolve, reject) => {
      this.driver.printDirect({
        data: buffer,
        printer: this.getPrinterName(),
        type: "RAW",
        success: function (jobID: string) {
          resolve();
        },
        error: function (err: Error) {
          reject(err);
        },
      });
    });
  }
}