/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* 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 "Workers.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/dom/Headers.h"
#include "mozilla/dom/RequestBinding.h"
#include "nsWeakReference.h"

namespace mozilla {
namespace dom {

class Console;
class Function;
class Promise;
class RequestOrUSVString;

namespace cache {

class CacheStorage;

} // namespace cache

namespace indexedDB {

class IDBFactory;

} // namespace indexedDB

} // namespace dom
} // namespace mozilla

BEGIN_WORKERS_NAMESPACE

class ServiceWorkerClients;
class WorkerPrivate;
class WorkerLocation;
class WorkerNavigator;
class Performance;

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

  nsRefPtr<Console> mConsole;
  nsRefPtr<WorkerLocation> mLocation;
  nsRefPtr<WorkerNavigator> mNavigator;
  nsRefPtr<Performance> mPerformance;
  nsRefPtr<IDBFactory> mIndexedDB;
  nsRefPtr<cache::CacheStorage> mCacheStorage;

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)

  already_AddRefed<WorkerGlobalScope>
  Self()
  {
    return nsRefPtr<WorkerGlobalScope>(this).forget();
  }

  Console*
  GetConsole();

  already_AddRefed<WorkerLocation>
  Location();

  already_AddRefed<WorkerNavigator>
  Navigator();

  already_AddRefed<WorkerNavigator>
  GetExistingNavigator() const;

  void
  Close(JSContext* aCx, ErrorResult& aRv);

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

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

  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)
  IMPL_EVENT_HANDLER(close)

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

  Performance* GetPerformance();

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

  already_AddRefed<IDBFactory>
  GetIndexedDB(ErrorResult& aErrorResult);

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

class DedicatedWorkerGlobalScope final : public WorkerGlobalScope
{
  ~DedicatedWorkerGlobalScope() { }

public:
  explicit DedicatedWorkerGlobalScope(WorkerPrivate* aWorkerPrivate);

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

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

  IMPL_EVENT_HANDLER(message)
};

class SharedWorkerGlobalScope final : public WorkerGlobalScope
{
  const nsCString mName;

  ~SharedWorkerGlobalScope() { }

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

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

  void GetName(DOMString& aName) const
  {
    aName.AsAString() = NS_ConvertUTF8toUTF16(mName);
  }

  IMPL_EVENT_HANDLER(connect)
};

class ServiceWorkerGlobalScope final : public WorkerGlobalScope
{
  const nsString mScope;
  nsRefPtr<ServiceWorkerClients> mClients;

  ~ServiceWorkerGlobalScope();

public:
  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ServiceWorkerGlobalScope,
                                           WorkerGlobalScope)

  ServiceWorkerGlobalScope(WorkerPrivate* aWorkerPrivate, const nsACString& aScope);

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

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

  void
  Update();

  already_AddRefed<Promise>
  Unregister(ErrorResult& aRv);

  ServiceWorkerClients*
  Clients();

  IMPL_EVENT_HANDLER(activate)
  IMPL_EVENT_HANDLER(beforeevicted)
  IMPL_EVENT_HANDLER(evicted)
  IMPL_EVENT_HANDLER(fetch)
  IMPL_EVENT_HANDLER(install)
  IMPL_EVENT_HANDLER(message)
};

class WorkerDebuggerGlobalScope final : public DOMEventTargetHelper,
                                        public nsIGlobalObject
{
  WorkerPrivate* mWorkerPrivate;

public:
  explicit WorkerDebuggerGlobalScope(WorkerPrivate* aWorkerPrivate);

  NS_DECL_ISUPPORTS_INHERITED

  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);

  void
  EnterEventLoop();

  void
  LeaveEventLoop();

  void
  PostMessage(const nsAString& aMessage);

  IMPL_EVENT_HANDLER(message)

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

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

private:
  virtual ~WorkerDebuggerGlobalScope();
};

END_WORKERS_NAMESPACE

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

#endif /* mozilla_dom_workerscope_h__ */
