How to parse JSON into a case class in Scala

User.scala

package models

import controllers.FacebookApp
import dispatch.json._
import helpers.LogHelper
import org.joda.time._
import org.joda.time.format._
import play.db.anorm._
import play.db.anorm.defaults._
import play.libs.WS

case class User(
  id: Pk[Long],
  name: String,
  firstName: String,
  lastName: String,
  link: String,
  hometown: (Long, String),
  location: (Long, String),
  gender: String,
  timezone: Int,
  locale: String,
  languages: List[(Long, String)],
  verified: Boolean,
  updatedTime: DateTime,
  accessToken: String,
  expires: Int)

object User extends Magic[User] with LogHelper {
  //  def handleParsedUser(parsedUser: User, oldUser: Option[User]) = {
  //    oldUser match {
  //      case None => {
  //        User.create(parsedUser)
  //        logger.info("created user")
  //      }
  //      case Some(user) => {
  //        User.update(parsedUser)
  //        logger.info("updated user")
  //      }
  //    }
  //
  //  }
}

object UserUtils extends LogHelper {
  import dispatch.json.Js._

  val idEx = ('id ! str) andThen (_ toLong)
  val nameEx = 'name ! str
  val firstNameEx = 'first_name ! str
  val lastNameEx = 'last_name ! str
  val linkEx = 'link ! str
  val hometownEx = 'hometown ! obj
  val locationEx = 'location ! obj
  val genderEx = 'gender ! str
  val timezoneEx = 'timezone ! num
  val localeEx = 'locale ! str
  val languagesEx = 'languages ! list
  val verifiedEx = 'verified ! bool
  val updatedTimeEx = 'updated_time ! str
  
  def query(accessToken: String, expires: Int) = {
    parse(WS.url(FacebookApp.graphUrl("me", "", accessToken)).get().getString(), accessToken, expires)
  }

  def parse(rawData: String, accessToken: String, expires: Int) = {

    val data = Js(rawData)

    val userId = idEx(data)
    val userOption = null //User.find("id = {id}").on("id" -> userId).singleOption()

    val parsedUser = User(
      Id(userId),
      nameEx(data),
      firstNameEx(data),
      lastNameEx(data),
      linkEx(data),
      ((hometownEx andThen idEx)(data),
        (hometownEx andThen nameEx)(data)),
      ((locationEx andThen idEx)(data),
        (locationEx andThen nameEx)(data)),
      genderEx(data),
      (timezoneEx andThen (_ toInt))(data),
      localeEx(data),
      (for (langItem <- languagesEx(data)) yield (idEx(langItem), nameEx(langItem))),
      verifiedEx(data),
      ISODateTimeFormat.dateTimeNoMillis().parseDateTime(updatedTimeEx(data)),
      accessToken,
      expires)

    logger.info(data)
    logger.info(parsedUser)
    //    User.handleParsedUser(parsedUser, userOption)
  }
}

// Example data
/*
{
    "id": "12345678",
    "name": "Foolio Bartez",
    "first_name": "Foolio",
    "last_name": "Bartez",
    "link": "http://www.facebook.com/foobar",
    "username": "foobar",
    "hometown": {
        "id": "123456789012345",
        "name": "Qux, Quux"
    },
    "location": {
        "id": "543210987654321",
        "name": "Corge, Grault"
    },
    "gender": "male",
    "timezone": -7,
    "locale": "en_US",
    "languages": [{
        "id": "113301478683221",
        "name": "American English"
    }],
    "verified": true,
    "updated_time": "2011-05-03T22:18:42+0000",
}
*/