Private app for multiple stores

[iDevJan]

Hello,

I am kinda lost. I am trying to figure out how could I make a single private app, hosted only once, that could be installed on multiple stores. By that I mean that when I would receive shop param, I would fetch database for API key/secret and other required data and use them, as far as I understand now, they are now registered in some global context. Does anyone have any hint how could I tackle this problem?

Best regards, Jan