import { Device } from "./device";

import { IDeviceInterface } from "../interfaces";

import * as Consts from "../consts";
import { calculateRamp } from "../utils";

/**
 * @class Light
 * @extends Device
 */
export class Light extends Device {


    constructor (hub: IDeviceInterface, portId: number) {
        super(hub, portId, {}, Consts.DeviceType.LIGHT);
    }


    /**
     * Set the light brightness.
     * @method Light#setBrightness
     * @param {number} brightness Brightness value between 0-100 (0 is off)
     * @returns {Promise} Resolved upon successful completion of command.
     */
    public setBrightness (brightness: number, interrupt: boolean = true) {
        if (interrupt) {
            this.cancelEventTimer();
        }
        return new Promise((resolve) => {
            this.writeDirect(0x00, Buffer.from([brightness]));
            return resolve();
        });
    }


    /**
     * Ramp the light brightness.
     * @method Light#rampBrightness
     * @param {number} fromBrightness Brightness value between 0-100 (0 is off)
     * @param {number} toBrightness Brightness value between 0-100 (0 is off)
     * @param {number} time How long the ramp should last (in milliseconds).
     * @returns {Promise} Resolved upon successful completion of command.
     */
    public rampBrightness (fromBrightness: number, toBrightness: number, time: number) {
        this.cancelEventTimer();
        return new Promise((resolve) => {
            calculateRamp(this, fromBrightness, toBrightness, time)
            .on("changePower", (power) => {
                this.setBrightness(power, false);
            })
            .on("finished", resolve);
        });
    }


}