How do I get Apple TV 3rd Gen to connect to new Wi-Fi settings with no remote and a TV too far away for ethernet cable connection?

After a lightning strike I needed a new modem. Now I want to connect my existing Apple TV to my new Wi-Fi network. My Apple remote is not paired as I always used an iPhone and iPad as my remote. The TV is too far away for an ethernet cable to reach the Apple TV box while HDMI is connected. I have a MacBook Air but it's never been connected to the Apple TV. Any help would be appreciated.