text: // Copyright 2021 The Chromium 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 "remoting/base/user_settings_win.h"
  
  #include "base/logging.h"
  #include "base/notreached.h"
  #include "base/strings/utf_string_conversions.h"
  #include "base/win/windows_types.h"
  
  namespace remoting {
  
  namespace {
  
  #if defined(OFFICIAL_BUILD)
  static constexpr wchar_t kUserSettingsKeyName[] =
      L"SOFTWARE\\Google\\Chrome Remote Desktop\\UserSettings";
  #else
  static constexpr wchar_t kUserSettingsKeyName[] =
      L"SOFTWARE\\Chromoting\\UserSettings";
  #endif
  
  }  // namespace
  
  UserSettingsWin::UserSettingsWin() {
    LONG result;
    result = settings_root_key_.Create(HKEY_CURRENT_USER, kUserSettingsKeyName,
                                       KEY_READ | KEY_WRITE);
    if (result != ERROR_SUCCESS) {
      LOG(DFATAL) << "Failed to create/open key HKCU\\" << kUserSettingsKeyName
                  << ", result: " << result;
    }
  }
  
  UserSettingsWin::~UserSettingsWin() = default;
  
  std::string UserSettingsWin::GetString(const UserSettingKey key) const {
    if (!settings_root_key_.Valid()) {
      LOG(ERROR) << "Can't get value for " << key
                 << " since registry key is invalid.";
      return std::string();
    }
  
    std::wstring wide_key = base::UTF8ToWide(key);
    std::wstring wide_value;
    LONG result = settings_root_key_.ReadValue(wide_key.c_str(), &wide_value);
    if (result == ERROR_FILE_NOT_FOUND) {
      // No setting for the given key.
      return std::string();
    }
    if (result != ERROR_SUCCESS) {
      LOG(ERROR) << "Failed to read value for " << key << ", result: " << result;
      return std::string();
    }
    return base::WideToUTF8(wide_value);
  }
  
  void UserSettingsWin::SetString(const UserSettingKey key,
                                  const std::string& value) {
    if (!settings_root_key_.Valid()) {
      LOG(ERROR) << "Can't set value for " << key
                 << " since registry key is invalid.";
      return;
    }
  
    std::wstring wide_key = base::UTF8ToWide(key);
    std::wstring wide_value = base::UTF8ToWide(value);
  
    LONG result =
        settings_root_key_.WriteValue(wide_key.c_str(), wide_value.c_str());
    if (result != ERROR_SUCCESS) {
      LOG(ERROR) << "Failed to write value " << value << " to key " << key
                 << ", result: " << result;
    }
  }
  
  }  // namespace remoting
  