if the fines will be for Book
every day will be 1 Kč
if the fines will be for CD
every day will be 1Kč
if the fines will be for Games
every day will be 10 Kč
fine is automatically calculated when API is called and list of borrowed products is returned.
Fine value will be defined in appsettings per product type.
e.g.
I have 1 book, which has to be returned on Aug 10th, today is Aug 18th, API will return that fine = 8 (1 Kč per day)