Making wireless string lights

Hi, I am trying to figure out how I could use my Arduino Uno to replace(?) the switch of my LED string lights to turn them on and off as the switch would do but wirelessly. I want to be able to use an app like IFTTT, Smart Life or some kind of application that supports WiFi connection to an Arduino like ArduinoBlue.
I don't know much about the Arduino IoT Cloud so maybe that makes what I am trying to do easier, but I have only seen it control an LED on the Arduino using the website.

Thanks for any help. :slight_smile:

P.S. I have attached a photo of the circuit the string lights use.