package controllersimport play.api.mvc._/* * Application sets a cookie in plain ASCII on the * client's browser recording the number of visits * of a page. */object Application extends Controller { //no or invalid cookie results in the counter being 0 def gt_cookie(c: Cookie) : Int = c.value match { case s if (s.forall(_.isDigit)) => s.toInt case _ => 0 } def mk_cookie(i: Int) : Cookie = { Cookie("visits", i.toString) } // GET request: read cookie data first def index = Action { request => //reads the cookie and extracts the visits counter val visits_cookie = request.cookies.get("visits") val visits = visits_cookie.map(gt_cookie).getOrElse(0) //printing a message according to value of visits counter val msg = if (visits >= 10) s"You are a valued customer who has visited this site $visits times." else s"You have visited this site $visits times." //send message with new cookie Ok(msg).withCookies(mk_cookie(visits + 1)) }}