/* -*- 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 "RemoteServiceWorkerContainerImpl.h"

#include "mozilla/ipc/BackgroundChild.h"

#include "mozilla/ipc/PBackgroundChild.h"

#include "ServiceWorkerContainerChild.h"

namespace mozilla {

namespace dom {

using mozilla::ipc::BackgroundChild;

using mozilla::ipc::PBackgroundChild;

using mozilla::ipc::ResponseRejectReason;

RemoteServiceWorkerContainerImpl::~RemoteServiceWorkerContainerImpl()

{

  Shutdown();

  MOZ_DIAGNOSTIC_ASSERT(!mOuter);

}

void

RemoteServiceWorkerContainerImpl::Shutdown()

{

  if (mShutdown) {

    return;

  }

  mShutdown = true;

  if (mActor) {

    mActor->RevokeOwner(this);

    mActor->MaybeStartTeardown();

    mActor = nullptr;

  }

}

void

RemoteServiceWorkerContainerImpl::AddContainer(ServiceWorkerContainer* aOuter)

{

  MOZ_DIAGNOSTIC_ASSERT(aOuter);

  MOZ_DIAGNOSTIC_ASSERT(!mOuter);

  mOuter = aOuter;

}

void

RemoteServiceWorkerContainerImpl::RemoveContainer(ServiceWorkerContainer* aOuter)

{

  MOZ_DIAGNOSTIC_ASSERT(aOuter);

  MOZ_DIAGNOSTIC_ASSERT(mOuter == aOuter);

  mOuter = nullptr;

}

void

RemoteServiceWorkerContainerImpl::Register(const ClientInfo& aClientInfo,

                                           const nsACString& aScopeURL,

                                           const nsACString& aScriptURL,

                                           ServiceWorkerUpdateViaCache aUpdateViaCache,

                                           ServiceWorkerRegistrationCallback&& aSuccessCB,

                                           ServiceWorkerFailureCallback&& aFailureCB) const

{

  if (!mActor) {

    aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));

    return;

  }

  mActor->SendRegister(

    aClientInfo.ToIPC(), nsCString(aScopeURL), nsCString(aScriptURL),

    aUpdateViaCache,

    [successCB = std::move(aSuccessCB), aFailureCB]

    (const IPCServiceWorkerRegistrationDescriptorOrCopyableErrorResult& aResult) {

      if (aResult.type() == IPCServiceWorkerRegistrationDescriptorOrCopyableErrorResult::TCopyableErrorResult) {

        // application layer error

        auto& rv = aResult.get_CopyableErrorResult();

        MOZ_DIAGNOSTIC_ASSERT(rv.Failed());

        aFailureCB(CopyableErrorResult(rv));

        return;

      }

      // success

      auto& ipcDesc = aResult.get_IPCServiceWorkerRegistrationDescriptor();

      successCB(ServiceWorkerRegistrationDescriptor(ipcDesc));

    }, [aFailureCB] (ResponseRejectReason aReason) {

      // IPC layer error

      aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));

    });

}

void

RemoteServiceWorkerContainerImpl::GetRegistration(const ClientInfo& aClientInfo,

                                                  const nsACString& aURL,

                                                  ServiceWorkerRegistrationCallback&& aSuccessCB,

                                                  ServiceWorkerFailureCallback&& aFailureCB) const

{

  if (!mActor) {

    aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));

    return;

  }

  mActor->SendGetRegistration(aClientInfo.ToIPC(), nsCString(aURL),

    [successCB = std::move(aSuccessCB), aFailureCB]

    (const IPCServiceWorkerRegistrationDescriptorOrCopyableErrorResult& aResult) {

      if (aResult.type() == IPCServiceWorkerRegistrationDescriptorOrCopyableErrorResult::TCopyableErrorResult) {

        auto& rv = aResult.get_CopyableErrorResult();

        // If rv is a failure then this is an application layer error.  Note,

        // though, we also reject with NS_OK to indicate that we just didn't

        // find a registration.

        aFailureCB(CopyableErrorResult(rv));

        return;

      }

      // success

      auto& ipcDesc = aResult.get_IPCServiceWorkerRegistrationDescriptor();

      successCB(ServiceWorkerRegistrationDescriptor(ipcDesc));

    }, [aFailureCB] (ResponseRejectReason aReason) {

      // IPC layer error

      aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));

    });

}

void

RemoteServiceWorkerContainerImpl::GetRegistrations(const ClientInfo& aClientInfo,

                                                   ServiceWorkerRegistrationListCallback&& aSuccessCB,

                                                   ServiceWorkerFailureCallback&& aFailureCB) const

{

  if (!mActor) {

    aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));

    return;

  }

  mActor->SendGetRegistrations(aClientInfo.ToIPC(),

   [successCB = std::move(aSuccessCB), aFailureCB]

   (const IPCServiceWorkerRegistrationDescriptorListOrCopyableErrorResult& aResult) {

      if (aResult.type() == IPCServiceWorkerRegistrationDescriptorListOrCopyableErrorResult::TCopyableErrorResult) {

        // application layer error

        auto& rv = aResult.get_CopyableErrorResult();

        MOZ_DIAGNOSTIC_ASSERT(rv.Failed());

        aFailureCB(CopyableErrorResult(rv));

        return;

      }

      // success

      auto& ipcList = aResult.get_IPCServiceWorkerRegistrationDescriptorList();

      nsTArray<ServiceWorkerRegistrationDescriptor> list(ipcList.values().Length());

      for (auto& ipcDesc : ipcList.values()) {

        list.AppendElement(ServiceWorkerRegistrationDescriptor(ipcDesc));

      }

      successCB(std::move(list));

    }, [aFailureCB] (ResponseRejectReason aReason) {

      // IPC layer error

      aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));

    });

}

void

RemoteServiceWorkerContainerImpl::GetReady(const ClientInfo& aClientInfo,

                                           ServiceWorkerRegistrationCallback&& aSuccessCB,

                                           ServiceWorkerFailureCallback&& aFailureCB) const

{

  if (!mActor) {

    aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));

    return;

  }

  mActor->SendGetReady(aClientInfo.ToIPC(),

    [successCB = std::move(aSuccessCB), aFailureCB]

    (const IPCServiceWorkerRegistrationDescriptorOrCopyableErrorResult& aResult) {

      if (aResult.type() == IPCServiceWorkerRegistrationDescriptorOrCopyableErrorResult::TCopyableErrorResult) {

        // application layer error

        auto& rv = aResult.get_CopyableErrorResult();

        MOZ_DIAGNOSTIC_ASSERT(rv.Failed());

        aFailureCB(CopyableErrorResult(rv));

        return;

      }

      // success

      auto& ipcDesc = aResult.get_IPCServiceWorkerRegistrationDescriptor();

      successCB(ServiceWorkerRegistrationDescriptor(ipcDesc));

    }, [aFailureCB] (ResponseRejectReason aReason) {

      // IPC layer error

      aFailureCB(CopyableErrorResult(NS_ERROR_DOM_INVALID_STATE_ERR));

    });

}

RemoteServiceWorkerContainerImpl::RemoteServiceWorkerContainerImpl()

  : mActor(nullptr)

  , mOuter(nullptr)

  , mShutdown(false)

{

  PBackgroundChild* parentActor = BackgroundChild::GetOrCreateForCurrentThread();

  if (NS_WARN_IF(!parentActor)) {

    Shutdown();

    return;

  }

  RefPtr<WorkerHolderToken> workerHolderToken;

  if (!NS_IsMainThread()) {

    WorkerPrivate* workerPrivate = GetCurrentThreadWorkerPrivate();

    MOZ_DIAGNOSTIC_ASSERT(workerPrivate);

    workerHolderToken =

      WorkerHolderToken::Create(workerPrivate, Canceling,

                                WorkerHolderToken::AllowIdleShutdownStart);

    if (NS_WARN_IF(!workerHolderToken)) {

      Shutdown();

      return;

    }

  }

  ServiceWorkerContainerChild* actor =

    new ServiceWorkerContainerChild(workerHolderToken);

  PServiceWorkerContainerChild* sentActor =

    parentActor->SendPServiceWorkerContainerConstructor(actor);

  if (NS_WARN_IF(!sentActor)) {

    Shutdown();

    return;

  }

  MOZ_DIAGNOSTIC_ASSERT(sentActor == actor);

  mActor = actor;

  mActor->SetOwner(this);

}

void

RemoteServiceWorkerContainerImpl::RevokeActor(ServiceWorkerContainerChild* aActor)

{

  MOZ_DIAGNOSTIC_ASSERT(mActor);

  MOZ_DIAGNOSTIC_ASSERT(mActor == aActor);

  mActor->RevokeOwner(this);

  mActor = nullptr;

  mShutdown = true;

}

} // namespace dom

} // namespace mozilla