/* 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 "IccManager.h"
#include "mozilla/dom/MozIccManagerBinding.h"
#include "Icc.h"
#include "IccListener.h"
#include "mozilla/AsyncEventDispatcher.h"
#include "mozilla/dom/IccChangeEvent.h"
#include "mozilla/Preferences.h"
#include "nsIIccInfo.h"

using namespace mozilla::dom;

NS_IMPL_CYCLE_COLLECTION_CLASS(IccManager)

NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(IccManager,
                                                  DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END

NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(IccManager,
                                                DOMEventTargetHelper)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END

// QueryInterface implementation for IccManager
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(IccManager)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)

NS_IMPL_ADDREF_INHERITED(IccManager, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(IccManager, DOMEventTargetHelper)

IccManager::IccManager(nsPIDOMWindow* aWindow)
  : DOMEventTargetHelper(aWindow)
{
  uint32_t numberOfServices =
    mozilla::Preferences::GetUint("ril.numRadioInterfaces", 1);

  for (uint32_t i = 0; i < numberOfServices; i++) {
    nsRefPtr<IccListener> iccListener = new IccListener(this, i);
    mIccListeners.AppendElement(iccListener);
  }
}

IccManager::~IccManager()
{
  Shutdown();
}

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

void
IccManager::Shutdown()
{
  for (uint32_t i = 0; i < mIccListeners.Length(); i++) {
    mIccListeners[i]->Shutdown();
    mIccListeners[i] = nullptr;
  }
  mIccListeners.Clear();
}

nsresult
IccManager::NotifyIccAdd(const nsAString& aIccId)
{
  MozIccManagerBinding::ClearCachedIccIdsValue(this);

  IccChangeEventInit init;
  init.mBubbles = false;
  init.mCancelable = false;
  init.mIccId = aIccId;

  nsRefPtr<IccChangeEvent> event =
    IccChangeEvent::Constructor(this, NS_LITERAL_STRING("iccdetected"), init);
  event->SetTrusted(true);

  nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
    new AsyncEventDispatcher(this, event);

  return asyncDispatcher->PostDOMEvent();
}

nsresult
IccManager::NotifyIccRemove(const nsAString& aIccId)
{
  MozIccManagerBinding::ClearCachedIccIdsValue(this);

  IccChangeEventInit init;
  init.mBubbles = false;
  init.mCancelable = false;
  init.mIccId = aIccId;

  nsRefPtr<IccChangeEvent> event =
    IccChangeEvent::Constructor(this, NS_LITERAL_STRING("iccundetected"), init);
  event->SetTrusted(true);

  nsRefPtr<AsyncEventDispatcher> asyncDispatcher =
    new AsyncEventDispatcher(this, event);

  return asyncDispatcher->PostDOMEvent();
}

// MozIccManager

void
IccManager::GetIccIds(nsTArray<nsString>& aIccIds)
{
  nsTArray<nsRefPtr<IccListener>>::size_type i;
  for (i = 0; i < mIccListeners.Length(); ++i) {
    Icc* icc = mIccListeners[i]->GetIcc();
    if (icc) {
      aIccIds.AppendElement(icc->GetIccId());
    }
  }
}

Icc*
IccManager::GetIccById(const nsAString& aIccId) const
{
  nsTArray<nsRefPtr<IccListener>>::size_type i;
  for (i = 0; i < mIccListeners.Length(); ++i) {
    Icc* icc = mIccListeners[i]->GetIcc();
    if (icc && aIccId == icc->GetIccId()) {
      return icc;
    }
  }
  return nullptr;
}