/* -*- 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 "FileSystemRootDirectoryEntry.h"

#include "FileSystemRootDirectoryReader.h"

#include "mozilla/dom/FileSystemUtils.h"

namespace mozilla {

namespace dom {

NS_IMPL_CYCLE_COLLECTION_INHERITED(FileSystemRootDirectoryEntry,

                                   FileSystemDirectoryEntry, mEntries)

NS_IMPL_ADDREF_INHERITED(FileSystemRootDirectoryEntry, FileSystemDirectoryEntry)

NS_IMPL_RELEASE_INHERITED(FileSystemRootDirectoryEntry, FileSystemDirectoryEntry)

NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FileSystemRootDirectoryEntry)

NS_INTERFACE_MAP_END_INHERITING(FileSystemDirectoryEntry)

FileSystemRootDirectoryEntry::FileSystemRootDirectoryEntry(nsIGlobalObject* aGlobal,

                                                           const Sequence<RefPtr<FileSystemEntry>>& aEntries,

                                                           FileSystem* aFileSystem)

  : FileSystemDirectoryEntry(aGlobal, nullptr, nullptr, aFileSystem)

  , mEntries(aEntries)

{

  MOZ_ASSERT(aGlobal);

}

FileSystemRootDirectoryEntry::~FileSystemRootDirectoryEntry()

{}

void

FileSystemRootDirectoryEntry::GetName(nsAString& aName, ErrorResult& aRv) const

{

  aName.Truncate();

}

void

FileSystemRootDirectoryEntry::GetFullPath(nsAString& aPath, ErrorResult& aRv) const

{

  aPath.AssignLiteral(FILESYSTEM_DOM_PATH_SEPARATOR_LITERAL);

}

already_AddRefed<FileSystemDirectoryReader>

FileSystemRootDirectoryEntry::CreateReader()

{

  RefPtr<FileSystemDirectoryReader> reader =

    new FileSystemRootDirectoryReader(this, Filesystem(), mEntries);

  return reader.forget();

}

void

FileSystemRootDirectoryEntry::GetInternal(const nsAString& aPath,

                                          const FileSystemFlags& aFlag,

                                          const Optional<OwningNonNull<FileSystemEntryCallback>>& aSuccessCallback,

                                          const Optional<OwningNonNull<ErrorCallback>>& aErrorCallback,

                                          GetInternalType aType)

{

  if (!aSuccessCallback.WasPassed() && !aErrorCallback.WasPassed()) {

    return;

  }

  if (aFlag.mCreate) {

    ErrorCallbackHelper::Call(GetParentObject(), aErrorCallback,

                              NS_ERROR_DOM_SECURITY_ERR);

    return;

  }

  nsTArray<nsString> parts;

  if (!FileSystemUtils::IsValidRelativeDOMPath(aPath, parts)) {

    ErrorCallbackHelper::Call(GetParentObject(), aErrorCallback,

                              NS_ERROR_DOM_NOT_FOUND_ERR);

    return;

  }

  MOZ_ASSERT(!parts.IsEmpty());

  RefPtr<FileSystemEntry> entry;

  for (uint32_t i = 0; i < mEntries.Length(); ++i) {

    ErrorResult rv;

    nsAutoString name;

    mEntries[i]->GetName(name, rv);

    if (NS_WARN_IF(rv.Failed())) {

      ErrorCallbackHelper::Call(GetParentObject(), aErrorCallback,

                                rv.StealNSResult());

      return;

    }

    if (name == parts[0]) {

      entry = mEntries[i];

      break;

    }

  }

  // Not found.

  if (!entry) {

    ErrorCallbackHelper::Call(GetParentObject(), aErrorCallback,

                              NS_ERROR_DOM_NOT_FOUND_ERR);

    return;

  }

  // No subdirectory in the path.

  if (parts.Length() == 1) {

    if ((entry->IsFile() && aType == eGetDirectory) ||

        (entry->IsDirectory() && aType == eGetFile)) {

      ErrorCallbackHelper::Call(GetParentObject(), aErrorCallback,

                                NS_ERROR_DOM_TYPE_MISMATCH_ERR);

      return;

    }

    if (aSuccessCallback.WasPassed()) {

      RefPtr<EntryCallbackRunnable> runnable =

        new EntryCallbackRunnable(&aSuccessCallback.Value(), entry);

      FileSystemUtils::DispatchRunnable(GetParentObject(), runnable.forget());

    }

    return;

  }

  // Subdirectories, but this is a file.

  if (entry->IsFile()) {

    ErrorCallbackHelper::Call(GetParentObject(), aErrorCallback,

                              NS_ERROR_DOM_NOT_FOUND_ERR);

    return;

  }

  // Let's recreate a path without the first directory.

  nsAutoString path;

  for (uint32_t i = 1, len = parts.Length(); i < len; ++i) {

    path.Append(parts[i]);

    if (i < len - 1) {

      path.AppendLiteral(FILESYSTEM_DOM_PATH_SEPARATOR_LITERAL);

    }

  }

  auto* directoryEntry = static_cast<FileSystemDirectoryEntry*>(entry.get());

  directoryEntry->GetInternal(path, aFlag, aSuccessCallback, aErrorCallback,

                              aType);

}

} // dom namespace

} // mozilla namespace