/* -*- 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 "GamepadServiceTest.h"

#include "mozilla/ErrorResult.h"

#include "mozilla/Unused.h"

#include "mozilla/dom/GamepadManager.h"

#include "mozilla/dom/GamepadPlatformService.h"

#include "mozilla/dom/GamepadServiceTestBinding.h"

#include "mozilla/dom/GamepadTestChannelChild.h"

#include "mozilla/ipc/BackgroundChild.h"

#include "mozilla/ipc/PBackgroundChild.h"

#include "mozilla/Unused.h"

#include "nsIObserver.h"

#include "nsIObserverService.h"

namespace mozilla {

namespace dom {

/*

 * Implementation of the test service. This is just to provide a simple binding

 * of the GamepadService to JavaScript via WebIDL so that we can write Mochitests

 * that add and remove fake gamepads, avoiding the platform-specific backends.

 */

NS_IMPL_CYCLE_COLLECTION_INHERITED(GamepadServiceTest, DOMEventTargetHelper,

                                   mWindow)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(GamepadServiceTest)

NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)

NS_IMPL_ADDREF_INHERITED(GamepadServiceTest, DOMEventTargetHelper)

NS_IMPL_RELEASE_INHERITED(GamepadServiceTest, DOMEventTargetHelper)

// static

already_AddRefed<GamepadServiceTest>

GamepadServiceTest::CreateTestService(nsPIDOMWindowInner* aWindow)

{

  MOZ_ASSERT(aWindow);

  RefPtr<GamepadServiceTest> service = new GamepadServiceTest(aWindow);

  service->InitPBackgroundActor();

  return service.forget();

}

void

GamepadServiceTest::Shutdown()

{

  MOZ_ASSERT(!mShuttingDown);

  mShuttingDown = true;

  DestroyPBackgroundActor();

  mWindow = nullptr;

}

GamepadServiceTest::GamepadServiceTest(nsPIDOMWindowInner* aWindow)

  : mService(GamepadManager::GetService()),

    mWindow(aWindow),

    mEventNumber(0),

    mShuttingDown(false),

    mChild(nullptr)

{}

GamepadServiceTest::~GamepadServiceTest() {}

void

GamepadServiceTest::InitPBackgroundActor()

{

  MOZ_ASSERT(!mChild);

  PBackgroundChild* actor = BackgroundChild::GetOrCreateForCurrentThread();

  if (NS_WARN_IF(!actor)) {

    MOZ_CRASH("Failed to create a PBackgroundChild actor!");

  }

  mChild = new GamepadTestChannelChild();

  PGamepadTestChannelChild* initedChild =

    actor->SendPGamepadTestChannelConstructor(mChild);

  if (NS_WARN_IF(!initedChild)) {

    MOZ_CRASH("Failed to create a PBackgroundChild actor!");

  }

}

void

GamepadServiceTest::DestroyPBackgroundActor()

{

  mChild->SendShutdownChannel();

  mChild = nullptr;

}

already_AddRefed<Promise>

GamepadServiceTest::AddGamepad(const nsAString& aID,

                               GamepadMappingType aMapping,

                               GamepadHand aHand,

                               uint32_t aNumButtons,

                               uint32_t aNumAxes,

                               uint32_t aNumHaptics,

                               ErrorResult& aRv)

{

  if (mShuttingDown) {

    return nullptr;

  }

  // Only VR controllers has displayID, we give 0 to the general gamepads.

  GamepadAdded a(nsString(aID),

                 aMapping, aHand, 0,

                 aNumButtons, aNumAxes, aNumHaptics);

  GamepadChangeEventBody body(a);

  GamepadChangeEvent e(0, GamepadServiceType::Standard, body);

  RefPtr<Promise> p = Promise::Create(mWindow->AsGlobal(), aRv);

  if (aRv.Failed()) {

    return nullptr;

  }

  uint32_t id = ++mEventNumber;

  mChild->AddPromise(id, p);

  mChild->SendGamepadTestEvent(id, e);

  return p.forget();

}

void

GamepadServiceTest::RemoveGamepad(uint32_t aIndex)

{

  if (mShuttingDown) {

    return;

  }

  GamepadRemoved a;

  GamepadChangeEventBody body(a);

  GamepadChangeEvent e(aIndex, GamepadServiceType::Standard, body);

  uint32_t id = ++mEventNumber;

  mChild->SendGamepadTestEvent(id, e);

}

void

GamepadServiceTest::NewButtonEvent(uint32_t aIndex,

                                   uint32_t aButton,

                                   bool aTouched,

                                   bool aPressed)

{

  if (mShuttingDown) {

    return;

  }

  GamepadButtonInformation a(aButton, aPressed ? 1.0 : 0, aPressed, aTouched);

  GamepadChangeEventBody body(a);

  GamepadChangeEvent e(aIndex, GamepadServiceType::Standard, body);

  uint32_t id = ++mEventNumber;

  mChild->SendGamepadTestEvent(id, e);

}

void

GamepadServiceTest::NewButtonValueEvent(uint32_t aIndex,

                                        uint32_t aButton,

                                        bool aPressed,

                                        bool aTouched,

                                        double aValue)

{

  if (mShuttingDown) {

    return;

  }

  GamepadButtonInformation a(aButton, aValue, aPressed, aTouched);

  GamepadChangeEventBody body(a);

  GamepadChangeEvent e(aIndex, GamepadServiceType::Standard, body);

  uint32_t id = ++mEventNumber;

  mChild->SendGamepadTestEvent(id, e);

}

void

GamepadServiceTest::NewAxisMoveEvent(uint32_t aIndex,

                                     uint32_t aAxis,

                                     double aValue)

{

  if (mShuttingDown) {

    return;

  }

  GamepadAxisInformation a(aAxis, aValue);

  GamepadChangeEventBody body(a);

  GamepadChangeEvent e(aIndex, GamepadServiceType::Standard, body);

  uint32_t id = ++mEventNumber;

  mChild->SendGamepadTestEvent(id, e);

}

void

GamepadServiceTest::NewPoseMove(uint32_t aIndex,

                                const Nullable<Float32Array>& aOrient,

                                const Nullable<Float32Array>& aPos,

                                const Nullable<Float32Array>& aAngVelocity,

                                const Nullable<Float32Array>& aAngAcceleration,

                                const Nullable<Float32Array>& aLinVelocity,

                                const Nullable<Float32Array>& aLinAcceleration)

{

  if (mShuttingDown) {

    return;

  }

  GamepadPoseState poseState;

  poseState.flags = GamepadCapabilityFlags::Cap_Orientation |

                    GamepadCapabilityFlags::Cap_Position |

                    GamepadCapabilityFlags::Cap_AngularAcceleration |

                    GamepadCapabilityFlags::Cap_LinearAcceleration;

  if (!aOrient.IsNull()) {

    const Float32Array& value = aOrient.Value();

    value.ComputeLengthAndData();

    MOZ_ASSERT(value.Length() == 4);

    poseState.orientation[0] = value.Data()[0];

    poseState.orientation[1] = value.Data()[1];

    poseState.orientation[2] = value.Data()[2];

    poseState.orientation[3] = value.Data()[3];

    poseState.isOrientationValid = true;

  }

  if (!aPos.IsNull()) {

    const Float32Array& value = aPos.Value();

    value.ComputeLengthAndData();

    MOZ_ASSERT(value.Length() == 3);

    poseState.position[0] = value.Data()[0];

    poseState.position[1] = value.Data()[1];

    poseState.position[2] = value.Data()[2];

    poseState.isPositionValid = true;

  }

  if (!aAngVelocity.IsNull()) {

    const Float32Array& value = aAngVelocity.Value();

    value.ComputeLengthAndData();

    MOZ_ASSERT(value.Length() == 3);

    poseState.angularVelocity[0] = value.Data()[0];

    poseState.angularVelocity[1] = value.Data()[1];

    poseState.angularVelocity[2] = value.Data()[2];

  }

  if (!aAngAcceleration.IsNull()) {

    const Float32Array& value = aAngAcceleration.Value();

    value.ComputeLengthAndData();

    MOZ_ASSERT(value.Length() == 3);

    poseState.angularAcceleration[0] = value.Data()[0];

    poseState.angularAcceleration[1] = value.Data()[1];

    poseState.angularAcceleration[2] = value.Data()[2];

  }

  if (!aLinVelocity.IsNull()) {

    const Float32Array& value = aLinVelocity.Value();

    value.ComputeLengthAndData();

    MOZ_ASSERT(value.Length() == 3);

    poseState.linearVelocity[0] = value.Data()[0];

    poseState.linearVelocity[1] = value.Data()[1];

    poseState.linearVelocity[2] = value.Data()[2];

  }

  if (!aLinAcceleration.IsNull()) {

    const Float32Array& value = aLinAcceleration.Value();

    value.ComputeLengthAndData();

    MOZ_ASSERT(value.Length() == 3);

    poseState.linearAcceleration[0] = value.Data()[0];

    poseState.linearAcceleration[1] = value.Data()[1];

    poseState.linearAcceleration[2] = value.Data()[2];

  }

  GamepadPoseInformation a(poseState);

  GamepadChangeEventBody body(a);

  GamepadChangeEvent e(aIndex, GamepadServiceType::Standard, body);

  uint32_t id = ++mEventNumber;

  mChild->SendGamepadTestEvent(id, e);

}

JSObject*

GamepadServiceTest::WrapObject(JSContext* aCx, JS::HandleObject aGivenProto)

{

  return GamepadServiceTest_Binding::Wrap(aCx, this, aGivenProto);

}

} // dom

} // mozilla