Automatically update daily menu / meal on Social Media

Hi IndieHackers :)

Today, I had a new idea of a Saas where restaurant / bar owners can edit their daily menu / meal and it will automatically post updates to Facebook, Insta, Google My Business or even to their Wordpress / etc... site.

In my country (Hungary) there is a lot of restaurant which offers daily meals / menus, and every one of them publishing the menu on different platforms. Some of them using their website, some of them posting on facebook, etc... That's why I thought there would be a market for a software where they can upload their menu, and it will automatically post it to different platforms, it could even live track the "stock" of a meal :)

Think it like an automatic social post Saas and a meal planner together.

This project seems like a good Saas for me, but I would ask your opinion about it :)

Does this problem exists in your oppinion? Is there any restaurants in your country which offers daily menus? How would you validate it?

Thanks for your advice :)