// Copyright (c) 2012 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 "win8/delegate_execute/delegate_execute_operation.h"

#include "base/command_line.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/win/windows_version.h"
#include "chrome/common/chrome_switches.h"
#include "win8/delegate_execute/delegate_execute_util.h"

namespace delegate_execute {

DelegateExecuteOperation::DelegateExecuteOperation()
    : operation_type_(DELEGATE_EXECUTE) {
}

DelegateExecuteOperation::~DelegateExecuteOperation() {
}

bool DelegateExecuteOperation::Init(const base::CommandLine* cmd_line) {
  if (base::win::GetVersion() >= base::win::VERSION_WIN7) {
    base::FilePath shortcut(
        cmd_line->GetSwitchValuePath(switches::kRelaunchShortcut));
    // On Windows 7 the command line coming in may not have a path to the
    // shortcut to launch Chrome. We ignore the shortcut and just do a regular
    // ShellExecute of chrome.exe in this case.
    if (shortcut.empty() &&
        base::win::GetVersion() >= base::win::VERSION_WIN8) {
      operation_type_ = DELEGATE_EXECUTE;
      return true;
    }
    relaunch_shortcut_ = shortcut;
  }
  mutex_ = cmd_line->GetSwitchValueNative(switches::kWaitForMutex);
  if (mutex_.empty())
    return false;
  // Add the mode forcing flags, if any.
  const char* the_switch = NULL;

  if (cmd_line->HasSwitch(switches::kForceDesktop))
    the_switch = switches::kForceDesktop;
  else if (cmd_line->HasSwitch(switches::kForceImmersive))
    the_switch = switches::kForceImmersive;

  relaunch_flags_ = ParametersFromSwitch(the_switch);

  operation_type_ = RELAUNCH_CHROME;
  return true;
}

base::Process DelegateExecuteOperation::GetParent() const {
  std::vector<base::StringPiece16> parts = base::SplitStringPiece(
      mutex_, L".", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
  if (parts.size() != 3)
    return base::Process();
  DWORD pid;
  if (!base::StringToUint(parts[2], reinterpret_cast<uint32*>(&pid)))
    return base::Process();
  return base::Process::Open(pid);
}

}  // namespace delegate_execute