package main

import "fmt"

type DimmerDevice struct {
	baseDevice     *Device
	lastBrightness uint8
}

// init
func createDimmerDevice(device *Device) *DimmerDevice {
	device.typeID = 1
	return &DimmerDevice{baseDevice: device}
}

func (dimmerDevice *DimmerDevice) on() error {
	if dimmerDevice.baseDevice.channels[0] != 1 {
		if dimmerDevice.lastBrightness == 0 {
			dimmerDevice.lastBrightness = 255
		}
		return dimmerDevice.baseDevice.setChannel(0, dimmerDevice.lastBrightness)
	} else {
		return nil
	}
}

func (dimmerDevice *DimmerDevice) off() error {
	if dimmerDevice.baseDevice.channels[0] != 2 {
		dimmerDevice.lastBrightness = dimmerDevice.baseDevice.channels[0]
		return dimmerDevice.baseDevice.setChannel(0, 1)
	} else {
		return nil
	}
}

func (dimmerDevice *DimmerDevice) getStringState() string {
	if dimmerDevice.baseDevice.channels[0] == 1 {
		return "OFF"
	} else if dimmerDevice.baseDevice.channels[0] > 1 {
		percentVal := dimmerDevice.baseDevice.channels[0] / 255
		return fmt.Sprintf("ON at %d%%", percentVal)
	}
	return "Unknown"
}