There are such ideas in smart homes but these have been custom affairs built by enthusiasts.
Check out CNET's Smart Home at https://www.cnet.com/smart-home/
And this recent article but no "central server." Read https://www.cnet.com/how-to/ifttts-maker-tier-does-what-google-home-and-alexa-cant/
Hey, guys so I just moved into my first home and I'm trying to create a home network. The idea is to have everything electronic connected to the server computer( TV's, other computers, tablets, phones, thermostat, Bluetooth speakers, etc.) and be able to control everything from central server and/or tablet. I want to have cable and chrome-cast connected and be able to view throughout the house. I would highly appreciate any advice on the software and process on doing such a thing!

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