/** Will try to decode a JSON Web Token to raw strings using a HMAC algorithm
    *
    * @return if successful, a tuple of 3 strings, the header, the claim and the signature
    * @param token $token
    * @param key $key
    * @param algorithms $algos
    */
  def decodeRawAll(token: String, key: String, algorithms: Seq[JwtHmacAlgorithm], options: JwtOptions): Try[(String, String, String)] = Try {
    val (header64, header, claim64, claim, signature) = splitToken(token)
    validate(header64, parseHeader(header), claim64, parseClaim(claim), signature, key, algorithms, options)
    (header, claim, signature)
  }

  def decodeRawAll(token: String, key: String, algorithms: Seq[JwtHmacAlgorithm]): Try[(String, String, String)] =
    decodeRawAll(token, key, algorithms, JwtOptions.DEFAULT)

  /** An alias for `isValid` if you want to directly pass a string as the key for HMAC algorithms
    *
    * @return a boolean value indicating if the token is valid or not
    * @param token $token
    * @param key $key
    * @param algorithms $algos
    */
  def isValid(token: String, key: String, algorithms: Seq[JwtHmacAlgorithm], options: JwtOptions): Boolean =
    try {
      validate(token, key, algorithms, options)
      true
    } catch {
      case _ : Throwable => false
    }

  def isValid(token: String, key: String, algorithms: Seq[JwtHmacAlgorithm]): Boolean = isValid(token, key, algorithms, JwtOptions.DEFAULT)

import pdi.jwt._
import org.json4s._
import org.json4s.jackson.JsonMethods._

object JwtDemo extends App{

  import scala.util._

  var clms = JwtClaim() ++ ("shopid" -> "1101") ++ ("userid" -> "102") ++ ("vchnum" -> 23)
  val token = Jwt.encode(clms,"OpenSesame", JwtAlgorithm.HS256)
  println(token)
  println(Jwt.isValid(token,"OpenSesame",Seq(JwtAlgorithm.HS256)))
  val claims = Jwt.decodeRawAll(token,"OpenSesame",Seq(JwtAlgorithm.HS256))
  println(claims)

  claims match {
    case Success(json) => println(((parse(json._2).asInstanceOf[JObject]) \ "shopid").values)
    case Failure(err) => println(s"Error: ${err.getMessage}")
  }

}