/* -*- 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 "URL.h"
#include "URLMainThread.h"
#include "URLWorker.h"

#include "MainThreadUtils.h"
#include "mozilla/dom/URLBinding.h"
#include "mozilla/dom/BindingUtils.h"
#include "nsContentUtils.h"
#include "nsIDocument.h"
#include "nsIURIMutator.h"

namespace mozilla {
namespace dom {

NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(URL, mParent, mSearchParams)

NS_IMPL_CYCLE_COLLECTING_ADDREF(URL)
NS_IMPL_CYCLE_COLLECTING_RELEASE(URL)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(URL)
  NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
  NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END

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

/* static */ already_AddRefed<URL>
URL::Constructor(const GlobalObject& aGlobal, const nsAString& aURL,
                 const Optional<nsAString>& aBase, ErrorResult& aRv)
{
  if (NS_IsMainThread()) {
    return URLMainThread::Constructor(aGlobal, aURL, aBase, aRv);
  }

  return URLWorker::Constructor(aGlobal, aURL, aBase, aRv);
}

/* static */ already_AddRefed<URL>
URL::WorkerConstructor(const GlobalObject& aGlobal, const nsAString& aURL,
                       const nsAString& aBase, ErrorResult& aRv)
{
  return URLWorker::Constructor(aGlobal, aURL, aBase, aRv);
}

void
URL::CreateObjectURL(const GlobalObject& aGlobal, Blob& aBlob,
                     nsAString& aResult, ErrorResult& aRv)
{
  if (NS_IsMainThread()) {
    URLMainThread::CreateObjectURL(aGlobal, aBlob, aResult, aRv);
  } else {
    URLWorker::CreateObjectURL(aGlobal, aBlob, aResult, aRv);
  }
}

void
URL::CreateObjectURL(const GlobalObject& aGlobal, MediaSource& aSource,
                     nsAString& aResult, ErrorResult& aRv)
{
  MOZ_ASSERT(NS_IsMainThread());
  URLMainThread::CreateObjectURL(aGlobal, aSource, aResult, aRv);
}

void
URL::RevokeObjectURL(const GlobalObject& aGlobal, const nsAString& aURL,
                     ErrorResult& aRv)
{
  if (NS_IsMainThread()) {
    URLMainThread::RevokeObjectURL(aGlobal, aURL, aRv);
  } else {
    URLWorker::RevokeObjectURL(aGlobal, aURL, aRv);
  }
}

bool
URL::IsValidURL(const GlobalObject& aGlobal, const nsAString& aURL,
                ErrorResult& aRv)
{
  if (NS_IsMainThread()) {
    return URLMainThread::IsValidURL(aGlobal, aURL, aRv);
  }
  return URLWorker::IsValidURL(aGlobal, aURL, aRv);
}

URLSearchParams*
URL::SearchParams()
{
  CreateSearchParamsIfNeeded();
  return mSearchParams;
}

bool IsChromeURI(nsIURI* aURI)
{
  bool isChrome = false;
  if (NS_SUCCEEDED(aURI->SchemeIs("chrome", &isChrome)))
      return isChrome;
  return false;
}

void
URL::CreateSearchParamsIfNeeded()
{
  if (!mSearchParams) {
    mSearchParams = new URLSearchParams(mParent, this);
    UpdateURLSearchParams();
  }
}

void
URL::SetSearch(const nsAString& aSearch)
{
  SetSearchInternal(aSearch);
  UpdateURLSearchParams();
}

void
URL::URLSearchParamsUpdated(URLSearchParams* aSearchParams)
{
  MOZ_ASSERT(mSearchParams);
  MOZ_ASSERT(mSearchParams == aSearchParams);

  nsAutoString search;
  mSearchParams->Serialize(search);

  SetSearchInternal(search);
}

#define URL_GETTER( value, func ) \
  MOZ_ASSERT(mURI);               \
  value.Truncate();               \
  nsAutoCString tmp;              \
  nsresult rv = mURI->func(tmp);  \
  if (NS_SUCCEEDED(rv)) {         \
    CopyUTF8toUTF16(tmp, value);  \
  }

void
URL::GetHref(nsAString& aHref) const
{
  URL_GETTER(aHref, GetSpec);
}

void
URL::GetProtocol(nsAString& aProtocol) const
{
  URL_GETTER(aProtocol, GetScheme);
  aProtocol.Append(char16_t(':'));
}

void
URL::GetUsername(nsAString& aUsername) const
{
  URL_GETTER(aUsername, GetUsername);
}

void
URL::SetUsername(const nsAString& aUsername)
{
  MOZ_ASSERT(mURI);

  Unused << NS_MutateURI(mURI)
              .SetUsername(NS_ConvertUTF16toUTF8(aUsername))
              .Finalize(mURI);
}

void
URL::GetPassword(nsAString& aPassword) const
{
  URL_GETTER(aPassword, GetPassword);
}

void
URL::SetPassword(const nsAString& aPassword)
{
  MOZ_ASSERT(mURI);

  Unused << NS_MutateURI(mURI)
              .SetPassword(NS_ConvertUTF16toUTF8(aPassword))
              .Finalize(mURI);
}

void
URL::GetHost(nsAString& aHost) const
{
  URL_GETTER(aHost, GetHostPort);
}

void
URL::SetHost(const nsAString& aHost)
{
  MOZ_ASSERT(mURI);

  Unused << NS_MutateURI(mURI)
              .SetHostPort(NS_ConvertUTF16toUTF8(aHost))
              .Finalize(mURI);
}

void
URL::GetHostname(nsAString& aHostname) const
{
  MOZ_ASSERT(mURI);

  aHostname.Truncate();
  nsContentUtils::GetHostOrIPv6WithBrackets(mURI, aHostname);
}

void
URL::SetHostname(const nsAString& aHostname)
{
  MOZ_ASSERT(mURI);

  // nsStandardURL returns NS_ERROR_UNEXPECTED for an empty hostname
  // The return code is silently ignored
  mozilla::Unused << NS_MutateURI(mURI)
                       .SetHost(NS_ConvertUTF16toUTF8(aHostname))
                       .Finalize(mURI);
}

void
URL::GetPort(nsAString& aPort) const
{
  MOZ_ASSERT(mURI);

  aPort.Truncate();

  int32_t port;
  nsresult rv = mURI->GetPort(&port);
  if (NS_SUCCEEDED(rv) && port != -1) {
    nsAutoString portStr;
    portStr.AppendInt(port, 10);
    aPort.Assign(portStr);
  }
}

void
URL::SetPort(const nsAString& aPort)
{
  nsresult rv;
  nsAutoString portStr(aPort);
  int32_t port = -1;

  // nsIURI uses -1 as default value.
  if (!portStr.IsEmpty()) {
    port = portStr.ToInteger(&rv);
    if (NS_FAILED(rv)) {
      return;
    }
  }

  Unused << NS_MutateURI(mURI)
              .SetPort(port)
              .Finalize(mURI);
}

void
URL::GetPathname(nsAString& aPathname) const
{
  MOZ_ASSERT(mURI);

  aPathname.Truncate();

  // Do not throw!  Not having a valid URI or URL should result in an empty
  // string.

  nsAutoCString file;
  nsresult rv = mURI->GetFilePath(file);
  if (NS_SUCCEEDED(rv)) {
    CopyUTF8toUTF16(file, aPathname);
  }
}

void
URL::SetPathname(const nsAString& aPathname)
{
  MOZ_ASSERT(mURI);

  // Do not throw!

  Unused << NS_MutateURI(mURI)
              .SetFilePath(NS_ConvertUTF16toUTF8(aPathname))
              .Finalize(mURI);
}

void
URL::GetSearch(nsAString& aSearch) const
{
  MOZ_ASSERT(mURI);

  aSearch.Truncate();

  // Do not throw!  Not having a valid URI or URL should result in an empty
  // string.

  nsAutoCString search;
  nsresult rv;

  rv = mURI->GetQuery(search);
  if (NS_SUCCEEDED(rv) && !search.IsEmpty()) {
    aSearch.Assign(u'?');
    AppendUTF8toUTF16(search, aSearch);
  }
}

void
URL::GetHash(nsAString& aHash) const
{
  MOZ_ASSERT(mURI);

  aHash.Truncate();

  nsAutoCString ref;
  nsresult rv = mURI->GetRef(ref);
  if (NS_SUCCEEDED(rv) && !ref.IsEmpty()) {
    aHash.Assign(char16_t('#'));
    AppendUTF8toUTF16(ref, aHash);
  }
}

void
URL::SetHash(const nsAString& aHash)
{
  MOZ_ASSERT(mURI);

  Unused << NS_MutateURI(mURI)
              .SetRef(NS_ConvertUTF16toUTF8(aHash))
              .Finalize(mURI);
}

void
URL::SetSearchInternal(const nsAString& aSearch)
{
  MOZ_ASSERT(mURI);

  // Ignore failures to be compatible with NS4.

  Unused << NS_MutateURI(mURI)
              .SetQuery(NS_ConvertUTF16toUTF8(aSearch))
              .Finalize(mURI);
}

void
URL::UpdateURLSearchParams()
{
  if (!mSearchParams) {
    return;
  }

  nsAutoCString search;
  nsresult rv = GetURI()->GetQuery(search);
  if (NS_WARN_IF(NS_FAILED(rv))) {
    search.Truncate();
  }

  mSearchParams->ParseInput(search);
}

void
URL::SetURI(already_AddRefed<nsIURI> aURI)
{
  mURI = std::move(aURI);
  MOZ_ASSERT(mURI);
}

nsIURI*
URL::GetURI() const
{
  MOZ_ASSERT(mURI);
  return mURI;
}

} // namespace dom
} // namespace mozilla
