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/* -*- 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/. */

#ifndef mozilla_dom_workerscope_h__
#define mozilla_dom_workerscope_h__

#include "mozilla/dom/WorkerCommon.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/dom/Headers.h"
#include "mozilla/dom/RequestBinding.h"
#include "nsWeakReference.h"
#include "mozilla/dom/ImageBitmapSource.h"

#ifdef XP_WIN
#undef PostMessage
#endif

namespace mozilla {
namespace dom {

class AnyCallback;
struct ChannelPixelLayout;
class ClientInfo;
class Clients;
class ClientState;
class Console;
class Crypto;
class Function;
class IDBFactory;
enum class ImageBitmapFormat : uint8_t;
class Performance;
class Promise;
class RequestOrUSVString;
class WorkerLocation;
class WorkerNavigator;
class WorkerPrivate;
enum class CallerType : uint32_t;

namespace cache {

class CacheStorage;

}  // namespace cache

class WorkerGlobalScope : public DOMEventTargetHelper,
                          public nsIGlobalObject,
                          public nsSupportsWeakReference {
  typedef mozilla::dom::IDBFactory IDBFactory;

  RefPtr<Console> mConsole;
  RefPtr<Crypto> mCrypto;
  RefPtr<WorkerLocation> mLocation;
  RefPtr<WorkerNavigator> mNavigator;
  RefPtr<Performance> mPerformance;
  RefPtr<IDBFactory> mIndexedDB;
  RefPtr<cache::CacheStorage> mCacheStorage;
  nsCOMPtr<nsISerialEventTarget> mSerialEventTarget;

  uint32_t mWindowInteractionsAllowed;

 protected:
  WorkerPrivate* mWorkerPrivate;

  explicit WorkerGlobalScope(WorkerPrivate* aWorkerPrivate);
  virtual ~WorkerGlobalScope();

 public:
  virtual JSObject* WrapObject(JSContext* aCx,
                               JS::Handle<JSObject*> aGivenProto) override;

  virtual bool WrapGlobalObject(JSContext* aCx,
                                JS::MutableHandle<JSObject*> aReflector) = 0;

  virtual JSObject* GetGlobalJSObject(void) override { return GetWrapper(); }

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(WorkerGlobalScope,
                                                         DOMEventTargetHelper)

  WorkerGlobalScope* Self() { return this; }

  already_AddRefed<Console> GetConsole(ErrorResult& aRv);

  Console* GetConsoleIfExists() const { return mConsole; }

  Crypto* GetCrypto(ErrorResult& aError);

  already_AddRefed<WorkerLocation> Location();

  already_AddRefed<WorkerNavigator> Navigator();

  already_AddRefed<WorkerNavigator> GetExistingNavigator() const;

  OnErrorEventHandlerNonNull* GetOnerror();
  void SetOnerror(OnErrorEventHandlerNonNull* aHandler);

  void ImportScripts(const Sequence<nsString>& aScriptURLs, ErrorResult& aRv);

  int32_t SetTimeout(JSContext* aCx, Function& aHandler, const int32_t aTimeout,
                     const Sequence<JS::Value>& aArguments, ErrorResult& aRv);
  int32_t SetTimeout(JSContext* aCx, const nsAString& aHandler,
                     const int32_t aTimeout,
                     const Sequence<JS::Value>& /* unused */, ErrorResult& aRv);
  void ClearTimeout(int32_t aHandle);
  int32_t SetInterval(JSContext* aCx, Function& aHandler,
                      const Optional<int32_t>& aTimeout,
                      const Sequence<JS::Value>& aArguments, ErrorResult& aRv);
  int32_t SetInterval(JSContext* aCx, const nsAString& aHandler,
                      const Optional<int32_t>& aTimeout,
                      const Sequence<JS::Value>& /* unused */,
                      ErrorResult& aRv);
  void ClearInterval(int32_t aHandle);

  void GetOrigin(nsAString& aOrigin) const;

  void Atob(const nsAString& aAtob, nsAString& aOutput, ErrorResult& aRv) const;
  void Btoa(const nsAString& aBtoa, nsAString& aOutput, ErrorResult& aRv) const;

  IMPL_EVENT_HANDLER(online)
  IMPL_EVENT_HANDLER(offline)

  void Dump(const Optional<nsAString>& aString) const;

  Performance* GetPerformance();

  Performance* GetPerformanceIfExists() const { return mPerformance; }

  static bool IsInAutomation(JSContext* aCx, JSObject* /* unused */);
  void GetJSTestingFunctions(JSContext* aCx,
                             JS::MutableHandle<JSObject*> aFunctions,
                             ErrorResult& aRv);

  already_AddRefed<Promise> Fetch(const RequestOrUSVString& aInput,
                                  const RequestInit& aInit,
                                  CallerType aCallerType, ErrorResult& aRv);

  already_AddRefed<IDBFactory> GetIndexedDB(ErrorResult& aErrorResult);

  already_AddRefed<cache::CacheStorage> GetCaches(ErrorResult& aRv);

  bool IsSecureContext() const;

  already_AddRefed<Promise> CreateImageBitmap(JSContext* aCx,
                                              const ImageBitmapSource& aImage,
                                              ErrorResult& aRv);

  already_AddRefed<Promise> CreateImageBitmap(JSContext* aCx,
                                              const ImageBitmapSource& aImage,
                                              int32_t aSx, int32_t aSy,
                                              int32_t aSw, int32_t aSh,
                                              ErrorResult& aRv);

  already_AddRefed<mozilla::dom::Promise> CreateImageBitmap(
      JSContext* aCx, const ImageBitmapSource& aImage, int32_t aOffset,
      int32_t aLength, mozilla::dom::ImageBitmapFormat aFormat,
      const mozilla::dom::Sequence<mozilla::dom::ChannelPixelLayout>& aLayout,
      mozilla::ErrorResult& aRv);

  bool WindowInteractionAllowed() const {
    return mWindowInteractionsAllowed > 0;
  }

  void AllowWindowInteraction() { mWindowInteractionsAllowed++; }

  void ConsumeWindowInteraction() {
    MOZ_ASSERT(mWindowInteractionsAllowed > 0);
    mWindowInteractionsAllowed--;
  }

  // Override DispatchTrait API to target the worker thread.  Dispatch may
  // return failure if the worker thread is not alive.
  nsresult Dispatch(TaskCategory aCategory,
                    already_AddRefed<nsIRunnable>&& aRunnable) override;

  nsISerialEventTarget* EventTargetFor(TaskCategory aCategory) const override;

  AbstractThread* AbstractMainThreadFor(TaskCategory aCategory) override;

  Maybe<ClientInfo> GetClientInfo() const override;

  Maybe<ClientState> GetClientState() const;

  Maybe<ServiceWorkerDescriptor> GetController() const override;

  RefPtr<mozilla::dom::ServiceWorkerRegistration>
  GetOrCreateServiceWorkerRegistration(
      const ServiceWorkerRegistrationDescriptor& aDescriptor) override;
};

class DedicatedWorkerGlobalScope final : public WorkerGlobalScope {
  const nsString mName;

  ~DedicatedWorkerGlobalScope() {}

 public:
  DedicatedWorkerGlobalScope(WorkerPrivate* aWorkerPrivate,
                             const nsString& aName);

  virtual bool WrapGlobalObject(
      JSContext* aCx, JS::MutableHandle<JSObject*> aReflector) override;

  void GetName(DOMString& aName) const { aName.AsAString() = mName; }

  void PostMessage(JSContext* aCx, JS::Handle<JS::Value> aMessage,
                   const Sequence<JSObject*>& aTransferable, ErrorResult& aRv);

  void Close(JSContext* aCx);

  IMPL_EVENT_HANDLER(message)
  IMPL_EVENT_HANDLER(messageerror)
};

class SharedWorkerGlobalScope final : public WorkerGlobalScope {
  const nsString mName;

  ~SharedWorkerGlobalScope() {}

 public:
  SharedWorkerGlobalScope(WorkerPrivate* aWorkerPrivate, const nsString& aName);

  virtual bool WrapGlobalObject(
      JSContext* aCx, JS::MutableHandle<JSObject*> aReflector) override;

  void GetName(DOMString& aName) const { aName.AsAString() = mName; }

  void Close(JSContext* aCx);

  IMPL_EVENT_HANDLER(connect)
};

class ServiceWorkerGlobalScope final : public WorkerGlobalScope {
  const nsString mScope;
  RefPtr<Clients> mClients;
  RefPtr<ServiceWorkerRegistration> mRegistration;

  ~ServiceWorkerGlobalScope();

 public:
  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ServiceWorkerGlobalScope,
                                           WorkerGlobalScope)
  IMPL_EVENT_HANDLER(notificationclick)
  IMPL_EVENT_HANDLER(notificationclose)

  ServiceWorkerGlobalScope(
      WorkerPrivate* aWorkerPrivate,
      const ServiceWorkerRegistrationDescriptor& aRegistrationDescriptor);

  virtual bool WrapGlobalObject(
      JSContext* aCx, JS::MutableHandle<JSObject*> aReflector) override;

  void GetScope(nsString& aScope) const { aScope = mScope; }

  already_AddRefed<Clients> GetClients();

  ServiceWorkerRegistration* Registration();

  already_AddRefed<Promise> SkipWaiting(ErrorResult& aRv);

  IMPL_EVENT_HANDLER(activate)
  IMPL_EVENT_HANDLER(install)
  IMPL_EVENT_HANDLER(message)

  IMPL_EVENT_HANDLER(push)
  IMPL_EVENT_HANDLER(pushsubscriptionchange)

  EventHandlerNonNull* GetOnfetch();

  void SetOnfetch(mozilla::dom::EventHandlerNonNull* aCallback);

  using DOMEventTargetHelper::AddEventListener;
  virtual void AddEventListener(
      const nsAString& aType, dom::EventListener* aListener,
      const dom::AddEventListenerOptionsOrBoolean& aOptions,
      const dom::Nullable<bool>& aWantsUntrusted, ErrorResult& aRv) override;
};

class WorkerDebuggerGlobalScope final : public DOMEventTargetHelper,
                                        public nsIGlobalObject {
  WorkerPrivate* mWorkerPrivate;
  RefPtr<Console> mConsole;
  nsCOMPtr<nsISerialEventTarget> mSerialEventTarget;

 public:
  explicit WorkerDebuggerGlobalScope(WorkerPrivate* aWorkerPrivate);

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(
      WorkerDebuggerGlobalScope, DOMEventTargetHelper)

  virtual JSObject* WrapObject(JSContext* aCx,
                               JS::Handle<JSObject*> aGivenProto) override {
    MOZ_CRASH("Shouldn't get here!");
  }

  virtual bool WrapGlobalObject(JSContext* aCx,
                                JS::MutableHandle<JSObject*> aReflector);

  virtual JSObject* GetGlobalJSObject(void) override { return GetWrapper(); }

  void GetGlobal(JSContext* aCx, JS::MutableHandle<JSObject*> aGlobal,
                 ErrorResult& aRv);

  void CreateSandbox(JSContext* aCx, const nsAString& aName,
                     JS::Handle<JSObject*> aPrototype,
                     JS::MutableHandle<JSObject*> aResult, ErrorResult& aRv);

  void LoadSubScript(JSContext* aCx, const nsAString& aURL,
                     const Optional<JS::Handle<JSObject*>>& aSandbox,
                     ErrorResult& aRv);

  void EnterEventLoop();

  void LeaveEventLoop();

  void PostMessage(const nsAString& aMessage);

  IMPL_EVENT_HANDLER(message)
  IMPL_EVENT_HANDLER(messageerror)

  void SetImmediate(Function& aHandler, ErrorResult& aRv);

  void ReportError(JSContext* aCx, const nsAString& aMessage);

  void RetrieveConsoleEvents(JSContext* aCx, nsTArray<JS::Value>& aEvents,
                             ErrorResult& aRv);

  void SetConsoleEventHandler(JSContext* aCx, AnyCallback* aHandler,
                              ErrorResult& aRv);

  already_AddRefed<Console> GetConsole(ErrorResult& aRv);

  Console* GetConsoleIfExists() const { return mConsole; }

  void Dump(JSContext* aCx, const Optional<nsAString>& aString) const;

  // Override DispatchTrait API to target the worker thread.  Dispatch may
  // return failure if the worker thread is not alive.
  nsresult Dispatch(TaskCategory aCategory,
                    already_AddRefed<nsIRunnable>&& aRunnable) override;

  nsISerialEventTarget* EventTargetFor(TaskCategory aCategory) const override;

  AbstractThread* AbstractMainThreadFor(TaskCategory aCategory) override;

 private:
  virtual ~WorkerDebuggerGlobalScope();
};

}  // namespace dom
}  // namespace mozilla

inline nsISupports* ToSupports(mozilla::dom::WorkerGlobalScope* aScope) {
  return static_cast<nsIDOMEventTarget*>(aScope);
}

#endif /* mozilla_dom_workerscope_h__ */