class Brightness extends Service {
  static {
    Service.register(
      this,
      {},
      {
        screen: ["float", "rw"],
      },
    );
  }

  _screen = 0;

  get screen() {
    return this._screen;
  }

  set screen(percent) {
    if (percent < 0) percent = 0;

    if (percent > 1) percent = 1;

    Utils.execAsync(`brightnessctl s ${percent * 100}% -q`)
      .then(() => {
        this._screen = percent;
        this.changed("screen");
      })
      .catch(console.error);
  }

  constructor() {
    super();
    try {
      this._screen =
        Number(Utils.exec("brightnessctl g")) /
        Number(Utils.exec("brightnessctl m"));
    } catch (error) {
      console.error("missing dependancy: brightnessctl");
    }
  }
}

const service = new Brightness();
export default service;