// 2023 syntax of scala is too different to reproduce this example

import scala.io._
import scala.actors._
import Actor._

object PageLoader {
  def getPageSize(url: String) = Source.fromURL(url).mkString.length

  def getCountOfLinks(url: String): int = {
    val raw = Source.fromURL(url).mkString
    
    val count = "<a>".r.findAllIn(raw).length

    return count
  }
}

val urls = List("https://www.amazon.com/",
                "https://www.twitter.com/",
                "https://www.google.com/",
                "https://www.cnn.com/")

def timeMethod(method: () => Unit) = {
  val start = System.nanoTime
  method()
  val end = System.nanoTime

  println("Method took " + (end - start)/1000000000.0 + " seconds.")
}

def getPageSizeSequentially() = {
  for(url <- urls) {
    println("Size for " + url + ": " + PageLoader.getPageSize(url))
  }
}

def getPageSizeConcurrrently() = {
  def caller = self

  for(url <- urls) {
    actor { caller ! (url, PageLoader.getPageSize(url)) }
  }

  for(i <- 1 to urls.size) {
    receive {
      case (url, size) =>
        println("Size for " + url + ": " + size)
    }
  }
}