/* -*- 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 "ServiceWorkerContainerProxy.h"

#include "mozilla/ipc/BackgroundParent.h"

namespace mozilla {
namespace dom {

using mozilla::ipc::AssertIsOnBackgroundThread;

ServiceWorkerContainerProxy::~ServiceWorkerContainerProxy()
{
  // Any thread
  MOZ_DIAGNOSTIC_ASSERT(!mActor);
}

ServiceWorkerContainerProxy::ServiceWorkerContainerProxy(ServiceWorkerContainerParent* aActor)
  : mActor(aActor)
{
  AssertIsOnBackgroundThread();
  MOZ_DIAGNOSTIC_ASSERT(mActor);

  // The container does not directly listen for updates, so we don't need
  // to immediately initialize.  The controllerchange event comes via the
  // ClientSource associated with the ServiceWorkerContainer's bound global.
}

void
ServiceWorkerContainerProxy::RevokeActor(ServiceWorkerContainerParent* aActor)
{
  AssertIsOnBackgroundThread();
  MOZ_DIAGNOSTIC_ASSERT(mActor);
  MOZ_DIAGNOSTIC_ASSERT(mActor == aActor);
  mActor = nullptr;
}

RefPtr<ServiceWorkerRegistrationPromise>
ServiceWorkerContainerProxy::Register(const ClientInfo& aClientInfo,
                                      const nsCString& aScopeURL,
                                      const nsCString& aScriptURL,
                                      ServiceWorkerUpdateViaCache aUpdateViaCache)
{
  AssertIsOnBackgroundThread();

  RefPtr<ServiceWorkerRegistrationPromise::Private> promise =
    new ServiceWorkerRegistrationPromise::Private(__func__);

  nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(__func__,
    [aClientInfo, aScopeURL, aScriptURL, aUpdateViaCache, promise] () mutable {
      auto scopeExit = MakeScopeExit([&] {
        promise->Reject(NS_ERROR_DOM_INVALID_STATE_ERR, __func__);
      });

      RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
      NS_ENSURE_TRUE_VOID(swm);

      swm->Register(aClientInfo, aScopeURL, aScriptURL, aUpdateViaCache)
         ->ChainTo(promise.forget(), __func__);

      scopeExit.release();
    });

  MOZ_ALWAYS_SUCCEEDS(SystemGroup::Dispatch(TaskCategory::Other, r.forget()));

  return promise;
}

RefPtr<ServiceWorkerRegistrationPromise>
ServiceWorkerContainerProxy::GetRegistration(const ClientInfo& aClientInfo,
                                             const nsCString& aURL)
{
  AssertIsOnBackgroundThread();

  RefPtr<ServiceWorkerRegistrationPromise::Private> promise =
    new ServiceWorkerRegistrationPromise::Private(__func__);

  nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(__func__,
    [aClientInfo, aURL, promise] () mutable {
      auto scopeExit = MakeScopeExit([&] {
        promise->Reject(NS_ERROR_DOM_INVALID_STATE_ERR, __func__);
      });

      RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
      NS_ENSURE_TRUE_VOID(swm);

      swm->GetRegistration(aClientInfo, aURL)->ChainTo(promise.forget(),
                                                       __func__);

      scopeExit.release();
    });

  MOZ_ALWAYS_SUCCEEDS(SystemGroup::Dispatch(TaskCategory::Other, r.forget()));

  return promise;
}

RefPtr<ServiceWorkerRegistrationListPromise>
ServiceWorkerContainerProxy::GetRegistrations(const ClientInfo& aClientInfo)
{
  AssertIsOnBackgroundThread();

  RefPtr<ServiceWorkerRegistrationListPromise::Private> promise =
    new ServiceWorkerRegistrationListPromise::Private(__func__);

  nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(__func__,
    [aClientInfo, promise] () mutable {
      auto scopeExit = MakeScopeExit([&] {
        promise->Reject(NS_ERROR_DOM_INVALID_STATE_ERR, __func__);
      });

      RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
      NS_ENSURE_TRUE_VOID(swm);

      swm->GetRegistrations(aClientInfo)->ChainTo(promise.forget(), __func__);

      scopeExit.release();
    });

  MOZ_ALWAYS_SUCCEEDS(SystemGroup::Dispatch(TaskCategory::Other, r.forget()));

  return promise;
}

RefPtr<ServiceWorkerRegistrationPromise>
ServiceWorkerContainerProxy::GetReady(const ClientInfo& aClientInfo)
{
  AssertIsOnBackgroundThread();

  RefPtr<ServiceWorkerRegistrationPromise::Private> promise =
    new ServiceWorkerRegistrationPromise::Private(__func__);

  nsCOMPtr<nsIRunnable> r = NS_NewRunnableFunction(__func__,
    [aClientInfo, promise] () mutable {
      auto scopeExit = MakeScopeExit([&] {
        promise->Reject(NS_ERROR_DOM_INVALID_STATE_ERR, __func__);
      });

      RefPtr<ServiceWorkerManager> swm = ServiceWorkerManager::GetInstance();
      NS_ENSURE_TRUE_VOID(swm);

      swm->WhenReady(aClientInfo)->ChainTo(promise.forget(), __func__);

      scopeExit.release();
    });

  MOZ_ALWAYS_SUCCEEDS(SystemGroup::Dispatch(TaskCategory::Other, r.forget()));

  return promise;
}

} // namespace dom
} // namespace mozilla