/* -*- 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 "DOMFileSystem.h"
#include "RootDirectoryEntry.h"
#include "mozilla/dom/DOMFileSystemBinding.h"
#include "nsContentUtils.h"

namespace mozilla {
namespace dom {

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(DOMFileSystem, mParent, mRoot)

NS_IMPL_CYCLE_COLLECTING_ADDREF(DOMFileSystem)
NS_IMPL_CYCLE_COLLECTING_RELEASE(DOMFileSystem)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMFileSystem)
  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END

/* static */ already_AddRefed<DOMFileSystem>
DOMFileSystem::Create(nsIGlobalObject* aGlobalObject)

{
  MOZ_ASSERT(aGlobalObject);


  nsID id;
  nsresult rv = nsContentUtils::GenerateUUIDInPlace(id);
  if (NS_WARN_IF(NS_FAILED(rv))) {
    return nullptr;
  }

  char chars[NSID_LENGTH];
  id.ToProvidedString(chars);

  // Any fileSystem has an unique ID. We use UUID, but our generator produces
  // UUID in this format '{' + UUID + '}'. We remove them with these +1 and -2.
  nsAutoCString name(Substring(chars + 1, chars + NSID_LENGTH - 2));

  RefPtr<DOMFileSystem> fs =
    new DOMFileSystem(aGlobalObject, NS_ConvertUTF8toUTF16(name));

  return fs.forget();
}

DOMFileSystem::DOMFileSystem(nsIGlobalObject* aGlobal,
                             const nsAString& aName)
  : mParent(aGlobal)
  , mName(aName)
{
  MOZ_ASSERT(aGlobal);
}

DOMFileSystem::~DOMFileSystem()
{}

JSObject*
DOMFileSystem::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
  return DOMFileSystemBinding::Wrap(aCx, this, aGivenProto);
}

void
DOMFileSystem::CreateRoot(const Sequence<RefPtr<Entry>>& aEntries)
{
  MOZ_ASSERT(!mRoot);
  mRoot = new RootDirectoryEntry(mParent, aEntries, this);
}

} // dom namespace
} // mozilla namespace
