Main.scala

import java.security.MessageDigest
import scala.xml.{Elem, XML}

case class Slideshow(id: Long, title: String, username: String)

object Main {

  def main(args: Array[String]) {
    val apiKey = System.getenv("SLIDESHARE_API_KEY")
    val sharedSecret = System.getenv("SLIDESHARE_SHARED_SECRET")
    val xml = search(apiKey, sharedSecret, "kotlin")
    val slideshows = (xml \ "Slideshow") map { e =>
      Slideshow(
        id       = (e \ "ID").text.toLong,
        title    = (e \ "Title").text,
        username = (e \ "Username").text
      )
    }
    slideshows.foreach(println)
  }

  private def search(apiKey: String, sharedSecret: String, query: String): Elem = {
    val ts = System.currentTimeMillis / 1000
    val hash = {
      val md = MessageDigest.getInstance("SHA-1")
      md.update((sharedSecret + ts).getBytes)
      md.digest.map(b => "%02x".format(b)).mkString
    }
    XML.load(s"https://www.slideshare.net/api/2/search_slideshows?api_key=${apiKey}&ts=${ts}&hash=${hash}&q=${query}")
  }
}

Main.main(Array())