// Copyright (c) 2013 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.

#include <string>

#include "base/files/file_path.h"
#include "libcef/browser/stream_impl.h"
#include "libcef/common/drag_data_impl.h"

#define CHECK_READONLY_RETURN_VOID()        \
  if (read_only_) {                         \
    DCHECK(false) << "object is read only"; \
    return;                                 \
  }

CefDragDataImpl::CefDragDataImpl(const content::DropData& data)
    : data_(data), read_only_(false) {}

CefDragDataImpl::CefDragDataImpl(const content::DropData& data,
                                 CefRefPtr<CefImage> image,
                                 const CefPoint& image_hotspot)
    : data_(data),
      image_(image),
      image_hotspot_(image_hotspot),
      read_only_(false) {}

CefDragDataImpl::CefDragDataImpl() : read_only_(false) {}

CefRefPtr<CefDragData> CefDragData::Create() {
  return new CefDragDataImpl();
}

CefRefPtr<CefDragData> CefDragDataImpl::Clone() {
  CefDragDataImpl* drag_data = nullptr;
  {
    base::AutoLock lock_scope(lock_);
    drag_data = new CefDragDataImpl(data_, image_, image_hotspot_);
  }
  return drag_data;
}

bool CefDragDataImpl::IsReadOnly() {
  base::AutoLock lock_scope(lock_);
  return read_only_;
}

bool CefDragDataImpl::IsLink() {
  base::AutoLock lock_scope(lock_);
  return (data_.url.is_valid() &&
          data_.file_contents_content_disposition.empty());
}

bool CefDragDataImpl::IsFragment() {
  base::AutoLock lock_scope(lock_);
  return (!data_.url.is_valid() &&
          data_.file_contents_content_disposition.empty() &&
          data_.filenames.empty());
}

bool CefDragDataImpl::IsFile() {
  base::AutoLock lock_scope(lock_);
  return (!data_.file_contents_content_disposition.empty() ||
          !data_.filenames.empty());
}

CefString CefDragDataImpl::GetLinkURL() {
  base::AutoLock lock_scope(lock_);
  return data_.url.spec();
}

CefString CefDragDataImpl::GetLinkTitle() {
  base::AutoLock lock_scope(lock_);
  return data_.url_title;
}

CefString CefDragDataImpl::GetLinkMetadata() {
  base::AutoLock lock_scope(lock_);
  return data_.download_metadata;
}

CefString CefDragDataImpl::GetFragmentText() {
  base::AutoLock lock_scope(lock_);
  return data_.text ? CefString(*data_.text) : CefString();
}

CefString CefDragDataImpl::GetFragmentHtml() {
  base::AutoLock lock_scope(lock_);
  return data_.html ? CefString(*data_.html) : CefString();
}

CefString CefDragDataImpl::GetFragmentBaseURL() {
  base::AutoLock lock_scope(lock_);
  return data_.html_base_url.spec();
}

CefString CefDragDataImpl::GetFileName() {
  base::AutoLock lock_scope(lock_);
  auto filename = data_.GetSafeFilenameForImageFileContents();
  return filename ? CefString(filename->value()) : CefString();
}

size_t CefDragDataImpl::GetFileContents(CefRefPtr<CefStreamWriter> writer) {
  base::AutoLock lock_scope(lock_);
  if (data_.file_contents.empty()) {
    return 0;
  }

  char* data = const_cast<char*>(data_.file_contents.c_str());
  size_t size = data_.file_contents.size();

  if (!writer.get()) {
    return size;
  }

  return writer->Write(data, 1, size);
}

bool CefDragDataImpl::GetFileNames(std::vector<CefString>& names) {
  base::AutoLock lock_scope(lock_);
  if (data_.filenames.empty()) {
    return false;
  }

  std::vector<ui::FileInfo>::const_iterator it = data_.filenames.begin();
  for (; it != data_.filenames.end(); ++it) {
    auto name = it->display_name.value();
    if (name.empty()) {
      name = it->path.BaseName().value();
    }
    names.push_back(name);
  }

  return true;
}

bool CefDragDataImpl::GetFilePaths(std::vector<CefString>& paths) {
  base::AutoLock lock_scope(lock_);
  if (data_.filenames.empty()) {
    return false;
  }

  std::vector<ui::FileInfo>::const_iterator it = data_.filenames.begin();
  for (; it != data_.filenames.end(); ++it) {
    auto path = it->path.value();
    paths.push_back(path);
  }

  return true;
}

void CefDragDataImpl::SetLinkURL(const CefString& url) {
  base::AutoLock lock_scope(lock_);
  CHECK_READONLY_RETURN_VOID();
  data_.url = GURL(url.ToString());
}

void CefDragDataImpl::SetLinkTitle(const CefString& title) {
  base::AutoLock lock_scope(lock_);
  CHECK_READONLY_RETURN_VOID();
  data_.url_title = title.ToString16();
}

void CefDragDataImpl::SetLinkMetadata(const CefString& data) {
  base::AutoLock lock_scope(lock_);
  CHECK_READONLY_RETURN_VOID();
  data_.download_metadata = data.ToString16();
}

void CefDragDataImpl::SetFragmentText(const CefString& text) {
  base::AutoLock lock_scope(lock_);
  CHECK_READONLY_RETURN_VOID();
  data_.text = text.ToString16();
}

void CefDragDataImpl::SetFragmentHtml(const CefString& fragment) {
  base::AutoLock lock_scope(lock_);
  CHECK_READONLY_RETURN_VOID();
  data_.html = fragment.ToString16();
}

void CefDragDataImpl::SetFragmentBaseURL(const CefString& fragment) {
  base::AutoLock lock_scope(lock_);
  CHECK_READONLY_RETURN_VOID();
  data_.html_base_url = GURL(fragment.ToString());
}

void CefDragDataImpl::ResetFileContents() {
  base::AutoLock lock_scope(lock_);
  CHECK_READONLY_RETURN_VOID();
  data_.file_contents.erase();
  data_.file_contents_source_url = GURL();
  data_.file_contents_filename_extension.erase();
  data_.file_contents_content_disposition.erase();
}

void CefDragDataImpl::AddFile(const CefString& path,
                              const CefString& display_name) {
  base::AutoLock lock_scope(lock_);
  CHECK_READONLY_RETURN_VOID();
  data_.filenames.push_back(
      ui::FileInfo(base::FilePath(path), base::FilePath(display_name)));
}

void CefDragDataImpl::ClearFilenames() {
  base::AutoLock lock_scope(lock_);
  data_.filenames.clear();
}

void CefDragDataImpl::SetReadOnly(bool read_only) {
  base::AutoLock lock_scope(lock_);
  if (read_only_ == read_only) {
    return;
  }

  read_only_ = read_only;
}

CefRefPtr<CefImage> CefDragDataImpl::GetImage() {
  base::AutoLock lock_scope(lock_);
  return image_;
}

CefPoint CefDragDataImpl::GetImageHotspot() {
  base::AutoLock lock_scope(lock_);
  return image_hotspot_;
}

bool CefDragDataImpl::HasImage() {
  base::AutoLock lock_scope(lock_);
  return image_ ? true : false;
}