/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this file,

 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "DCPresentationChannelDescription.h"

#include "nsComponentManagerUtils.h"

#include "nsGlobalWindow.h"

#include "PresentationBuilderChild.h"

#include "PresentationIPCService.h"

#include "nsServiceManagerUtils.h"

#include "mozilla/Unused.h"

namespace mozilla {

namespace dom {

NS_IMPL_ISUPPORTS(PresentationBuilderChild,

                  nsIPresentationSessionTransportBuilderListener)

PresentationBuilderChild::PresentationBuilderChild(const nsString& aSessionId,

                                                   uint8_t aRole)

  : mSessionId(aSessionId)

  , mRole(aRole)

{

}

nsresult PresentationBuilderChild::Init()

{

  mBuilder = do_CreateInstance("@mozilla.org/presentation/datachanneltransportbuilder;1");

  if (NS_WARN_IF(!mBuilder)) {

    return NS_ERROR_NOT_AVAILABLE;

  }

  uint64_t windowId = 0;

  nsCOMPtr<nsIPresentationService> service =

    do_GetService(PRESENTATION_SERVICE_CONTRACTID);

  if (NS_WARN_IF(!service)) {

    return NS_ERROR_NOT_AVAILABLE;

  }

  if (NS_WARN_IF(NS_FAILED(service->GetWindowIdBySessionId(

                           mSessionId,

                           mRole,

                           &windowId)))) {

    return NS_ERROR_NOT_AVAILABLE;

  }

  nsPIDOMWindowInner* window = nsGlobalWindowInner::GetInnerWindowWithId(windowId)->AsInner();

  if (NS_WARN_IF(!window)) {

    return NS_ERROR_NOT_AVAILABLE;

  }

  return mBuilder->BuildDataChannelTransport(mRole, window, this);

}

void

PresentationBuilderChild::ActorDestroy(ActorDestroyReason aWhy)

{

  mBuilder = nullptr;

  mActorDestroyed = true;

}

mozilla::ipc::IPCResult

PresentationBuilderChild::RecvOnOffer(const nsString& aSDP)

{

  if (NS_WARN_IF(!mBuilder)) {

    return IPC_FAIL_NO_REASON(this);

  }

  RefPtr<DCPresentationChannelDescription> description =

    new DCPresentationChannelDescription(aSDP);

  if (NS_WARN_IF(NS_FAILED(mBuilder->OnOffer(description)))) {

    return IPC_FAIL_NO_REASON(this);

  }

  return IPC_OK();

}

mozilla::ipc::IPCResult

PresentationBuilderChild::RecvOnAnswer(const nsString& aSDP)

{

  if (NS_WARN_IF(!mBuilder)) {

    return IPC_FAIL_NO_REASON(this);

  }

  RefPtr<DCPresentationChannelDescription> description =

    new DCPresentationChannelDescription(aSDP);

  if (NS_WARN_IF(NS_FAILED(mBuilder->OnAnswer(description)))) {

    return IPC_FAIL_NO_REASON(this);

  }

  return IPC_OK();

}

mozilla::ipc::IPCResult

PresentationBuilderChild::RecvOnIceCandidate(const nsString& aCandidate)

{

  if (NS_WARN_IF(mBuilder && NS_FAILED(mBuilder->OnIceCandidate(aCandidate)))) {

    return IPC_FAIL_NO_REASON(this);

  }

  return IPC_OK();

}

// nsPresentationSessionTransportBuilderListener

NS_IMETHODIMP

PresentationBuilderChild::OnSessionTransport(nsIPresentationSessionTransport* aTransport)

{

  if (NS_WARN_IF(mActorDestroyed || !SendOnSessionTransport())){

    return NS_ERROR_FAILURE;

  }

  nsCOMPtr<nsIPresentationService> service =

    do_GetService(PRESENTATION_SERVICE_CONTRACTID);

  NS_WARNING_ASSERTION(service, "no presentation service");

  if (service) {

    Unused << NS_WARN_IF(NS_FAILED(static_cast<PresentationIPCService*>(service.get())->

                                     NotifySessionTransport(mSessionId, mRole, aTransport)));

  }

  mBuilder = nullptr;

  return NS_OK;

}

NS_IMETHODIMP

PresentationBuilderChild::OnError(nsresult reason)

{

  mBuilder = nullptr;

  if (NS_WARN_IF(mActorDestroyed || !SendOnSessionTransportError(reason))){

    return NS_ERROR_FAILURE;

  }

  return NS_OK;

}

NS_IMETHODIMP

PresentationBuilderChild::SendOffer(nsIPresentationChannelDescription* aOffer)

{

  nsAutoString SDP;

  nsresult rv = aOffer->GetDataChannelSDP(SDP);

  if (NS_WARN_IF(NS_FAILED(rv))) {

    return rv;

  }

  if (NS_WARN_IF(mActorDestroyed || !SendSendOffer(SDP))){

    return NS_ERROR_FAILURE;

  }

  return NS_OK;

}

NS_IMETHODIMP

PresentationBuilderChild::SendAnswer(nsIPresentationChannelDescription* aAnswer)

{

  nsAutoString SDP;

  nsresult rv = aAnswer->GetDataChannelSDP(SDP);

  if (NS_WARN_IF(NS_FAILED(rv))) {

    return rv;

  }

  if (NS_WARN_IF(mActorDestroyed || !SendSendAnswer(SDP))){

    return NS_ERROR_FAILURE;

  }

  return NS_OK;

}

NS_IMETHODIMP

PresentationBuilderChild::SendIceCandidate(const nsAString& candidate)

{

  if (NS_WARN_IF(mActorDestroyed || !SendSendIceCandidate(nsString(candidate)))) {

    return NS_ERROR_FAILURE;

  }

  return NS_OK;

}

NS_IMETHODIMP

PresentationBuilderChild::Close(nsresult reason)

{

  if (NS_WARN_IF(mActorDestroyed || !SendClose(reason))) {

    return NS_ERROR_FAILURE;

  }

  return NS_OK;

}

} // namespace dom

} // namespace mozilla