1 object Application extends Controller {

     2 

     3   def gt_cookie(c: Cookie) : Int = c.value match {

     4     case s if (s.forall(_.isDigit)) => s.toInt 

     5     case _ => 0

     6   }

     7 

     8   def mk_cookie(i: Int) : Cookie = Cookie("visits", i.toString)

     9   

    10   // GET request: read cookie data first

    11   def index = Action { request =>

    12  

    13     //reads the cookie and extracts the visits counter   

    14     val visits_cookie = request.cookies.get("visits")

    15     val visits = visits_cookie.map(gt_cookie).getOrElse(0)

    16 

    17     //printing a message according to value of visits counter

    18     val msg = 

    19       if (visits >= 10)

    20         s"You are a valued customer who has visited this site $visits times."               

    21       else s"You have visited this site $visits times."

    22     

    23     //send message with new cookie

    24     Ok(msg).withCookies(mk_cookie(visits + 1))

    25   }

    26 }

    27 

    28 

    29 

    30