/* 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 "ActorsChild.h"

// Local includes
#include "QuotaManagerService.h"
#include "QuotaRequests.h"
#include "QuotaResults.h"

// Global includes
#include <new>

#include "mozilla/Assertions.h"
#include "mozilla/dom/quota/PQuotaRequest.h"
#include "nsError.h"
#include "nsID.h"
#include "nsIEventTarget.h"
#include "nsIQuotaResults.h"
#include "nsISupports.h"
#include "nsIVariant.h"
#include "nsString.h"
#include "nsThreadUtils.h"
#include "nsVariant.h"

namespace mozilla::dom::quota {

/*******************************************************************************
 * QuotaChild
 ******************************************************************************/

QuotaChild::QuotaChild(QuotaManagerService* aService)
    : mService(aService)
#ifdef DEBUG
      ,
      mOwningThread(GetCurrentSerialEventTarget())
#endif
{
  AssertIsOnOwningThread();
  MOZ_ASSERT(aService);

  MOZ_COUNT_CTOR(quota::QuotaChild);
}

QuotaChild::~QuotaChild() {
  AssertIsOnOwningThread();

  MOZ_COUNT_DTOR(quota::QuotaChild);
}

#ifdef DEBUG

void QuotaChild::AssertIsOnOwningThread() const {
  MOZ_ASSERT(mOwningThread);

  bool current;
  MOZ_ASSERT(NS_SUCCEEDED(mOwningThread->IsOnCurrentThread(&current)));
  MOZ_ASSERT(current);
}

#endif  // DEBUG

void QuotaChild::ActorDestroy(ActorDestroyReason aWhy) {
  AssertIsOnOwningThread();

  if (mService) {
    mService->ClearBackgroundActor();
#ifdef DEBUG
    mService = nullptr;
#endif
  }
}

PQuotaRequestChild* QuotaChild::AllocPQuotaRequestChild(
    const RequestParams& aParams) {
  AssertIsOnOwningThread();

  MOZ_CRASH("PQuotaRequestChild actors should be manually constructed!");
}

bool QuotaChild::DeallocPQuotaRequestChild(PQuotaRequestChild* aActor) {
  AssertIsOnOwningThread();
  MOZ_ASSERT(aActor);

  delete static_cast<QuotaRequestChild*>(aActor);
  return true;
}

/*******************************************************************************
 * QuotaRequestChild
 ******************************************************************************/

QuotaRequestChild::QuotaRequestChild(Request* aRequest) : mRequest(aRequest) {
  AssertIsOnOwningThread();

  MOZ_COUNT_CTOR(quota::QuotaRequestChild);
}

QuotaRequestChild::~QuotaRequestChild() {
  AssertIsOnOwningThread();

  MOZ_COUNT_DTOR(quota::QuotaRequestChild);
}

#ifdef DEBUG

void QuotaRequestChild::AssertIsOnOwningThread() const {
  MOZ_ASSERT(mRequest);
  mRequest->AssertIsOnOwningThread();
}

#endif  // DEBUG

void QuotaRequestChild::HandleResponse(nsresult aResponse) {
  AssertIsOnOwningThread();
  MOZ_ASSERT(NS_FAILED(aResponse));
  MOZ_ASSERT(mRequest);

  mRequest->SetError(aResponse);
}

void QuotaRequestChild::HandleResponse() {
  AssertIsOnOwningThread();
  MOZ_ASSERT(mRequest);

  RefPtr<nsVariant> variant = new nsVariant();
  variant->SetAsVoid();

  mRequest->SetResult(variant);
}

void QuotaRequestChild::HandleResponse(bool aResponse) {
  AssertIsOnOwningThread();
  MOZ_ASSERT(mRequest);

  RefPtr<nsVariant> variant = new nsVariant();
  variant->SetAsBool(aResponse);

  mRequest->SetResult(variant);
}

void QuotaRequestChild::HandleResponse(const nsAString& aResponse) {
  AssertIsOnOwningThread();
  MOZ_ASSERT(mRequest);

  RefPtr<nsVariant> variant = new nsVariant();
  variant->SetAsAString(aResponse);

  mRequest->SetResult(variant);
}

void QuotaRequestChild::HandleResponse(const EstimateResponse& aResponse) {
  AssertIsOnOwningThread();
  MOZ_ASSERT(mRequest);

  RefPtr<EstimateResult> result =
      new EstimateResult(aResponse.usage(), aResponse.limit());

  RefPtr<nsVariant> variant = new nsVariant();
  variant->SetAsInterface(NS_GET_IID(nsIQuotaEstimateResult), result);

  mRequest->SetResult(variant);
}

void QuotaRequestChild::HandleResponse(
    const GetFullOriginMetadataResponse& aResponse) {
  AssertIsOnOwningThread();
  MOZ_ASSERT(mRequest);

  RefPtr<nsVariant> variant = new nsVariant();

  if (aResponse.maybeFullOriginMetadata()) {
    RefPtr<FullOriginMetadataResult> result =
        new FullOriginMetadataResult(*aResponse.maybeFullOriginMetadata());

    variant->SetAsInterface(NS_GET_IID(nsIQuotaFullOriginMetadataResult),
                            result);

  } else {
    variant->SetAsVoid();
  }

  mRequest->SetResult(variant);
}

void QuotaRequestChild::ActorDestroy(ActorDestroyReason aWhy) {
  AssertIsOnOwningThread();
}

mozilla::ipc::IPCResult QuotaRequestChild::Recv__delete__(
    const RequestResponse& aResponse) {
  AssertIsOnOwningThread();
  MOZ_ASSERT(mRequest);

  switch (aResponse.type()) {
    case RequestResponse::Tnsresult:
      HandleResponse(aResponse.get_nsresult());
      break;

    case RequestResponse::TStorageNameResponse:
      HandleResponse(aResponse.get_StorageNameResponse().name());
      break;

    case RequestResponse::TPersistResponse:
      HandleResponse();
      break;

    case RequestResponse::TGetFullOriginMetadataResponse:
      HandleResponse(aResponse.get_GetFullOriginMetadataResponse());
      break;

    case RequestResponse::TPersistedResponse:
      HandleResponse(aResponse.get_PersistedResponse().persisted());
      break;

    case RequestResponse::TEstimateResponse:
      HandleResponse(aResponse.get_EstimateResponse());
      break;

    default:
      MOZ_CRASH("Unknown response type!");
  }

  return IPC_OK();
}

}  // namespace mozilla::dom::quota