import {Light} from './Light';
import {Connection} from '../Connection';
import {FunctionId} from '../FunctionId';
import {LogInterface} from '../LogInterface';

export class DimmableLight extends Light {
  public static functionIds: FunctionId[] = [FunctionId.FID_DIMMING_ACTUATOR];

  private mininumBrightness = 1;
  private minimumBrightnessDataPoint = 'pm0001';

  private brightness = 0;
  private brightnessDataPointGet = 'odp0001';
  private brightnessDataPointSet = 'odp0001';

  constructor(
    logger: LogInterface,
    connection: Connection,
    serialNumber: string,
    channel: number
  ) {
    super(logger, connection, serialNumber, channel);

    // this.on(LightEvent.TURNED_ON, () => {console.log(this.displayName, 'Light turned on')});
    // this.on(LightEvent.TURNED_OFF, () => {console.log(this.displayName, 'Light turned off')});
  }

  public getMinimumBrightness(): number {
    return this.mininumBrightness;
  }

  public getBrightness(): number {
    return this.brightness;
  }

  public async setBrightness(brightness: number): Promise<void> {
    this.brightness = brightness;
    await this.setDatapoint(
      this.channel,
      this.brightnessDataPointSet,
      Math.round(this.brightness).toString()
    );
  }

  protected handleChannelState(datapoints: {[dp: string]: string}): void {
    super.handleChannelState(datapoints);

    if (datapoints[this.minimumBrightnessDataPoint]) {
      this.mininumBrightness = parseInt(
        datapoints[this.minimumBrightnessDataPoint]
      );
    }
    if (datapoints[this.brightnessDataPointGet]) {
      this.brightness = parseInt(datapoints[this.brightnessDataPointGet]);
    }
  }

  protected handleChannelUpdate(datapoints: {[dp: string]: string}): void {
    super.handleChannelUpdate(datapoints);

    if (datapoints[this.minimumBrightnessDataPoint]) {
      this.mininumBrightness = parseInt(
        datapoints[this.minimumBrightnessDataPoint]
      );
    }

    if (datapoints[this.brightnessDataPointGet]) {
      this.brightness = parseInt(datapoints[this.brightnessDataPointGet]);
      this.changed();
    }
  }

  public changed(): void {
    super.changed();

    this.logger.info(
      `[${this.getIdentifierName()}] Light brightness ` + this.brightness
    );
  }
}