// RootIndex renders the root page. It has three different options:
//
// 1. If there's no user, it renders the "Create user" page.
// 2. If the current user is not logged in, it render the "Login" page.
// 3. If the current user is logged in, then it redirects the user to the
// /topics page.
func RootIndex(res http.ResponseWriter, req *http.Request) {
id := lib.GetCookie(req, "userId")
if id == nil {
count := Count("users")
if count == 0 {
lib.Render(res, "users/new", lib.DefaultViewData())
} else {
lib.Render(res, "application/login", lib.DefaultViewData())
}
} else {
http.Redirect(res, req, "/topics", http.StatusFound)
}
}
func license(w http.ResponseWriter, req *http.Request) {
lib.Render(w, "application/license", lib.DefaultViewData())
}