package appimport (	md "farga/app/middleware"	"farga/db/types"	"farga/lib"	"farga/templating"	"net/http")// requires `md.UserHandle` middleware.func (a *App) UserProfileHandler(w http.ResponseWriter, r *http.Request) {	user, ok := r.Context().Value(md.UserHandleKey).(*types.User)	if !ok {		// the user middleware failed, and returned no user.		http.NotFound(w, r)		return	}	var isOwner bool	reqUser, ok := r.Context().Value(lib.UserKey).(*types.User)	if ok && user.ID == reqUser.ID {		isOwner = true	}	templating.Render(w, r, "base", "user-profile", map[string]any{		"User":    user,		"IsOwner": isOwner,	})}