/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
 */
/* 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 "nsWinRemoteClient.h"
#include <windows.h>
#include "RemoteUtils.h"

using namespace mozilla;

nsresult nsWinRemoteClient::Init() { return NS_OK; }

nsresult nsWinRemoteClient::SendCommandLine(
    const char* aProgram, const char* aProfile, int32_t argc, char** argv,
    const char* aDesktopStartupID, char** aResponse, bool* aSucceeded) {
  *aSucceeded = false;

  nsString className;
  BuildClassName(aProgram, aProfile, className);

  HWND handle = ::FindWindowW(className.get(), 0);

  if (!handle) {
    return NS_OK;
  }

  WCHAR* cmd = ::GetCommandLineW();
  WCHAR cwd[MAX_PATH];
  _wgetcwd(cwd, MAX_PATH);

  // Construct a narrow UTF8 buffer <commandline>\0<workingdir>\0
  NS_ConvertUTF16toUTF8 utf8buffer(cmd);
  utf8buffer.Append('\0');
  WCHAR* cwdPtr = cwd;
  AppendUTF16toUTF8(MakeStringSpan(reinterpret_cast<char16_t*>(cwdPtr)),
                    utf8buffer);
  utf8buffer.Append('\0');

  // We used to set dwData to zero, when we didn't send the working dir.
  // Now we're using it as a version number.
  COPYDATASTRUCT cds = {1, utf8buffer.Length(), (void*)utf8buffer.get()};
  // Bring the already running Mozilla process to the foreground.
  // nsWindow will restore the window (if minimized) and raise it.
  ::SetForegroundWindow(handle);
  ::SendMessage(handle, WM_COPYDATA, 0, (LPARAM)&cds);

  *aSucceeded = true;

  return NS_OK;
}