/*
   +----------------------------------------------------------------------+
   | HipHop for PHP                                                       |
   +----------------------------------------------------------------------+
   | Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com)     |
   | Copyright (c) 1997-2010 The PHP Group                                |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
*/

#include "hphp/runtime/ext/ext_asio.h"
#include "hphp/runtime/ext/ext_closure.h"
#include "hphp/runtime/ext/asio/asio_context.h"
#include "hphp/runtime/ext/asio/asio_session.h"
#include "hphp/system/systemlib.h"

namespace HPHP {
///////////////////////////////////////////////////////////////////////////////

int f_asio_get_current_context_idx() {
  return AsioSession::Get()->getCurrentContextIdx();
}

Object f_asio_get_running_in_context(int ctx_idx) {
  auto session = AsioSession::Get();

  if (ctx_idx <= 0) {
    Object e(SystemLib::AllocInvalidArgumentExceptionObject(
      "Expected ctx_idx to be a positive integer"));
    throw e;
  }
  if (ctx_idx > session->getCurrentContextIdx()) {
    Object e(SystemLib::AllocInvalidArgumentExceptionObject(
      "Expected ctx_idx to be less than or equal to the current context index"));
    throw e;
  }

  assert(session->getContext(ctx_idx));
  assert(session->getContext(ctx_idx)->isRunning());
  return session->getContext(ctx_idx)->getCurrent();
}

Object f_asio_get_running() {
  return AsioSession::Get()->getCurrentWaitHandle();
}

void f_asio_set_on_failed_callback(CVarRef on_failed_cb) {
  if (!on_failed_cb.isNull() && !on_failed_cb.instanceof(c_Closure::s_cls)) {
    Object e(SystemLib::AllocInvalidArgumentExceptionObject(
      "Unable to set asio on failed callback: on_failed_cb not a closure"));
    throw e;
  }
  AsioSession::Get()->setOnFailedCallback(on_failed_cb.getObjectDataOrNull());
}

void f_asio_set_on_started_callback(CVarRef on_started_cb) {
  c_ContinuationWaitHandle::ti_setoncreatecallback(on_started_cb);
}

///////////////////////////////////////////////////////////////////////////////
}