// Copyright 2013 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 "chrome/browser/extensions/api/system_network/system_network_api.h"

namespace {
const char kNetworkListError[] = "Network lookup failed or unsupported";
}  // namespace

namespace extensions {
namespace api {

SystemNetworkGetNetworkInterfacesFunction::
    SystemNetworkGetNetworkInterfacesFunction() {}

SystemNetworkGetNetworkInterfacesFunction::
    ~SystemNetworkGetNetworkInterfacesFunction() {}

bool SystemNetworkGetNetworkInterfacesFunction::RunImpl() {
  content::BrowserThread::PostTask(content::BrowserThread::FILE, FROM_HERE,
      base::Bind(&SystemNetworkGetNetworkInterfacesFunction::
          GetListOnFileThread,
          this));
  return true;
}

void SystemNetworkGetNetworkInterfacesFunction::GetListOnFileThread() {
  net::NetworkInterfaceList interface_list;
  if (net::GetNetworkList(&interface_list)) {
    content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
        base::Bind(&SystemNetworkGetNetworkInterfacesFunction::
            SendResponseOnUIThread,
            this, interface_list));
    return;
  }

  content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
      base::Bind(&SystemNetworkGetNetworkInterfacesFunction::
          HandleGetListError,
          this));
}

void SystemNetworkGetNetworkInterfacesFunction::HandleGetListError() {
  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  error_ = kNetworkListError;
  SendResponse(false);
}

void SystemNetworkGetNetworkInterfacesFunction::SendResponseOnUIThread(
    const net::NetworkInterfaceList& interface_list) {
  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));

  std::vector<linked_ptr<api::system_network::NetworkInterface> >
      create_arg;
  create_arg.reserve(interface_list.size());
  for (net::NetworkInterfaceList::const_iterator i = interface_list.begin();
       i != interface_list.end(); ++i) {
    linked_ptr<api::system_network::NetworkInterface> info =
        make_linked_ptr(new api::system_network::NetworkInterface);
    info->name = i->name;
    info->address = net::IPAddressToString(i->address);
    info->prefix_length = i->network_prefix;
    create_arg.push_back(info);
  }

  results_ = api::system_network::GetNetworkInterfaces::Results::Create(
      create_arg);
  SendResponse(true);
}

}  // namespace api
}  // namespace extensions