/**
 * Copyright (C) 2009-2011 Scalable Solutions AB <http://scalablesolutions.se>
 */

package akka.http

import javax.servlet. {AsyncContext, AsyncListener, AsyncEvent};
import Types._

import akka.actor.{EventHandler}

/**
 * @author Garrick Evans
 */
trait Servlet30Context extends AsyncListener {
  import javax.servlet.http.HttpServletResponse
  import MistSettings._

  val builder: () => tAsyncRequestContext
  val context: Option[tAsyncRequestContext] = Some(builder())
  def go = context.isDefined

  protected val _ac: AsyncContext = {
    val ac = context.get.asInstanceOf[AsyncContext]
    ac setTimeout DefaultTimeout
    ac addListener this
    ac
  }

  def suspended = true

  def timeout(ms: Long): Boolean = {
    try {
      _ac setTimeout ms
      true
    }
    catch {
      case ex: IllegalStateException =>
        EventHandler notify EventHandler.Error(ex, this)
        false
    }
  }

  //
  // AsyncListener
  //
  def onComplete(e: AsyncEvent) {}
  def onError(e: AsyncEvent) = e.getThrowable match {
    case null => {}
    case    t => {}
  }
  def onStartAsync(e: AsyncEvent) {}
  def onTimeout(e: AsyncEvent) = {
    e.getSuppliedResponse.asInstanceOf[HttpServletResponse].addHeader(ExpiredHeaderName, ExpiredHeaderValue)
    e.getAsyncContext.complete
  }
}

object Servlet30ContextMethodFactory extends RequestMethodFactory {
  def  Delete(f: () => tAsyncRequestContext): RequestMethod = new Delete(f) with Servlet30Context
  def     Get(f: () => tAsyncRequestContext): RequestMethod = new Get(f) with Servlet30Context
  def    Head(f: () => tAsyncRequestContext): RequestMethod = new Head(f) with Servlet30Context
  def Options(f: () => tAsyncRequestContext): RequestMethod = new Options(f) with Servlet30Context
  def    Post(f: () => tAsyncRequestContext): RequestMethod = new Post(f) with Servlet30Context
  def     Put(f: () => tAsyncRequestContext): RequestMethod = new Put(f) with Servlet30Context
  def   Trace(f: () => tAsyncRequestContext): RequestMethod = new Trace(f) with Servlet30Context
}