Install path the same as app admin config page path

[RobertDev]

Hello,

I am building a node-express Shopify app and I found out that the app install path is the same as the app admin config page path.

What I did so far is when after an install happens I store the domain and access token in the DB, and when I access the route again then I verify if I have a value in DB

for a specific shop domain.

The problem is with this approach that I need some kind of verification for a reinstall event? from what I read the access token is permanent but I am not so sure.

Any advice would be appreciated!

Regards,

Robert