dolphin/Source/Core/DolphinWX/NetPlay/NetWindow.cpp

// Copyright 2015 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#include "DolphinWX/NetPlay/NetWindow.h"

#include <algorithm>
#include <cstddef>
#include <limits>
#include <sstream>
#include <string>
#include <tuple>
#include <vector>
#include <wx/button.h>
#include <wx/checkbox.h>
#include <wx/choice.h>
#include <wx/clipbrd.h>
#include <wx/colour.h>
#include <wx/config.h>
#include <wx/dialog.h>
#include <wx/frame.h>
#include <wx/listbox.h>
#include <wx/msgdlg.h>
#include <wx/notebook.h>
#include <wx/panel.h>
#include <wx/sizer.h>
#include <wx/spinctrl.h>
#include <wx/statbox.h>
#include <wx/stattext.h>
#include <wx/string.h>
#include <wx/textctrl.h>

#include "Common/CommonPaths.h"
#include "Common/CommonTypes.h"
#include "Common/Config/Config.h"
#include "Common/FileUtil.h"
#include "Common/MsgHandler.h"
#include "Common/SPSCQueue.h"
#include "Common/StringUtil.h"

#include "Core/Config/SYSCONFSettings.h"
#include "Core/ConfigManager.h"
#include "Core/HW/EXI/EXI_Device.h"
#include "Core/NetPlayClient.h"
#include "Core/NetPlayProto.h"
#include "Core/NetPlayServer.h"

#include "DolphinWX/Frame.h"
#include "DolphinWX/GameListCtrl.h"
#include "DolphinWX/ISOFile.h"
#include "DolphinWX/NetPlay/ChangeGameDialog.h"
#include "DolphinWX/NetPlay/PadMapDialog.h"
#include "DolphinWX/WxUtils.h"
#include "MD5Dialog.h"

#include "VideoCommon/OnScreenDisplay.h"
#include "VideoCommon/VideoConfig.h"

NetPlayServer* NetPlayDialog::netplay_server = nullptr;
NetPlayClient* NetPlayDialog::netplay_client = nullptr;
NetPlayDialog* NetPlayDialog::npd = nullptr;

void NetPlayDialog::FillWithGameNames(wxListBox* game_lbox, const GameListCtrl& game_list)
{
  for (u32 i = 0; auto game = game_list.GetISO(i); ++i)
    game_lbox->Append(StrToWxStr(game->GetUniqueIdentifier()));
}

NetPlayDialog::NetPlayDialog(wxWindow* const parent, const GameListCtrl* const game_list,
                             const std::string& game, const bool is_hosting)
    : wxFrame(parent, wxID_ANY, _("Dolphin NetPlay")), m_selected_game(game), m_start_btn(nullptr),
      m_host_label(nullptr), m_host_type_choice(nullptr), m_host_copy_btn(nullptr),
      m_host_copy_btn_is_retry(false), m_is_hosting(is_hosting), m_game_list(game_list)
{
  Bind(wxEVT_THREAD, &NetPlayDialog::OnThread, this);
  CreateGUI();
  SetIcons(WxUtils::GetDolphinIconBundle());
  Center();

  // Remember the window size and position for NetWindow
  {
    int winPosX, winPosY, winWidth, winHeight;
    wxConfig::Get()->Read("NetWindowPosX", &winPosX, std::numeric_limits<int>::min());
    wxConfig::Get()->Read("NetWindowPosY", &winPosY, std::numeric_limits<int>::min());
    wxConfig::Get()->Read("NetWindowWidth", &winWidth, -1);
    wxConfig::Get()->Read("NetWindowHeight", &winHeight, -1);

    WxUtils::SetWindowSizeAndFitToScreen(this, wxPoint(winPosX, winPosY),
                                         wxSize(winWidth, winHeight), GetSize());
  }
}

void NetPlayDialog::CreateGUI()
{
  const int space5 = FromDIP(5);

  // NOTE: The design operates top down. Margins / padding are handled by the outermost
  //   sizers, this makes the design easier to change. Inner sizers should only pad between
  //   widgets, they should never have prepended or appended margins/spacers.
  wxPanel* const panel = new wxPanel(this);
  wxBoxSizer* const main_szr = new wxBoxSizer(wxVERTICAL);
  main_szr->AddSpacer(space5);
  main_szr->Add(CreateTopGUI(panel), 0, wxEXPAND | wxLEFT | wxRIGHT, space5);
  main_szr->AddSpacer(space5);
  main_szr->Add(CreateMiddleGUI(panel), 1, wxEXPAND | wxLEFT | wxRIGHT, space5);
  main_szr->AddSpacer(space5);
  main_szr->Add(CreateBottomGUI(panel), 0, wxEXPAND | wxLEFT | wxRIGHT, space5);
  main_szr->AddSpacer(space5);

  panel->SetSizerAndFit(main_szr);
  main_szr->SetSizeHints(this);
  SetSize(FromDIP(wxSize(768, 768 - 128)));
}

wxSizer* NetPlayDialog::CreateTopGUI(wxWindow* parent)
{
  m_game_btn = new wxButton(parent, wxID_ANY, _(" Game : ") + StrToWxStr(m_selected_game),
                            wxDefaultPosition, wxDefaultSize, wxBU_LEFT);

  if (m_is_hosting)
    m_game_btn->Bind(wxEVT_BUTTON, &NetPlayDialog::OnChangeGame, this);
  else
    m_game_btn->Disable();

  wxBoxSizer* top_szr = new wxBoxSizer(wxHORIZONTAL);
  top_szr->Add(m_game_btn, 1, wxEXPAND);

  if (m_is_hosting)
  {
    m_MD5_choice = new wxChoice(parent, wxID_ANY, wxDefaultPosition, FromDIP(wxSize(150, -1)));
    m_MD5_choice->Bind(wxEVT_CHOICE, &NetPlayDialog::OnMD5ComputeRequested, this);
    m_MD5_choice->Append(_("MD5 check..."));
    m_MD5_choice->Append(_("Current game"));
    m_MD5_choice->Append(_("Other game"));
    m_MD5_choice->Append(_("SD card"));
    m_MD5_choice->SetSelection(0);

    top_szr->Add(m_MD5_choice, 0, wxALIGN_CENTER_VERTICAL);
  }

  return top_szr;
}

wxSizer* NetPlayDialog::CreateMiddleGUI(wxWindow* parent)
{
  const int space5 = FromDIP(5);

  wxBoxSizer* const mid_szr = new wxBoxSizer(wxHORIZONTAL);
  mid_szr->Add(CreateChatGUI(parent), 1, wxEXPAND);
  mid_szr->Add(CreatePlayerListGUI(parent), 0, wxEXPAND | wxLEFT, space5);
  return mid_szr;
}

wxSizer* NetPlayDialog::CreateChatGUI(wxWindow* parent)
{
  const int space5 = FromDIP(5);

  wxStaticBoxSizer* const chat_szr = new wxStaticBoxSizer(wxVERTICAL, parent, _("Chat"));
  parent = chat_szr->GetStaticBox();

  m_chat_text = new wxTextCtrl(parent, wxID_ANY, wxEmptyString, wxDefaultPosition, wxDefaultSize,
                               wxTE_READONLY | wxTE_MULTILINE);

  m_chat_msg_text = new wxTextCtrl(parent, wxID_ANY, wxEmptyString, wxDefaultPosition,
                                   wxDefaultSize, wxTE_PROCESS_ENTER);
  m_chat_msg_text->Bind(wxEVT_TEXT_ENTER, &NetPlayDialog::OnChat, this);
  m_chat_msg_text->SetMaxLength(2000);

  wxButton* const chat_msg_btn =
      new wxButton(parent, wxID_ANY, _("Send"), wxDefaultPosition,
                   wxSize(-1, m_chat_msg_text->GetBestSize().GetHeight()));
  chat_msg_btn->Bind(wxEVT_BUTTON, &NetPlayDialog::OnChat, this);

  wxBoxSizer* const chat_msg_szr = new wxBoxSizer(wxHORIZONTAL);
  // NOTE: Remember that fonts are configurable, setting sizes of anything that contains
  //   text in pixels is dangerous because the text may end up being clipped.
  chat_msg_szr->Add(WxUtils::GiveMinSizeDIP(m_chat_msg_text, wxSize(-1, 25)), 1,
                    wxALIGN_CENTER_VERTICAL);
  chat_msg_szr->Add(chat_msg_btn, 0, wxEXPAND);

  chat_szr->Add(m_chat_text, 1, wxEXPAND);
  chat_szr->Add(chat_msg_szr, 0, wxEXPAND | wxTOP, space5);
  return chat_szr;
}

wxSizer* NetPlayDialog::CreatePlayerListGUI(wxWindow* parent)
{
  const int space5 = FromDIP(5);

  wxStaticBoxSizer* const player_szr = new wxStaticBoxSizer(wxVERTICAL, parent, _("Players"));
  // Static box is a widget, new widgets should be children instead of siblings to avoid various
  // flickering problems.
  parent = player_szr->GetStaticBox();

  m_player_lbox = new wxListBox(parent, wxID_ANY, wxDefaultPosition, FromDIP(wxSize(256, -1)), 0,
                                nullptr, wxLB_HSCROLL);

  if (m_is_hosting && g_TraversalClient)
  {
    m_host_type_choice = new wxChoice(parent, wxID_ANY, wxDefaultPosition, FromDIP(wxSize(76, -1)));
    m_host_type_choice->Bind(wxEVT_CHOICE, &NetPlayDialog::OnChoice, this);
    m_host_type_choice->Append(_("Room ID:"));
    m_host_type_choice->Select(0);

    m_host_label = new wxStaticText(parent, wxID_ANY, "555.555.555.555:55555", wxDefaultPosition,
                                    wxDefaultSize, wxST_NO_AUTORESIZE);
    // Update() should fix this immediately.
    m_host_label->SetLabel("");

    m_host_copy_btn = new wxButton(parent, wxID_ANY, _("Copy"));
    m_host_copy_btn->Bind(wxEVT_BUTTON, &NetPlayDialog::OnCopyIP, this);
    m_host_copy_btn->Disable();

    UpdateHostLabel();

    wxBoxSizer* const host_szr = new wxBoxSizer(wxHORIZONTAL);
    host_szr->Add(m_host_type_choice);
    host_szr->Add(m_host_label, 1, wxALIGN_CENTER_VERTICAL | wxLEFT, space5);
    host_szr->Add(m_host_copy_btn, 0, wxALIGN_CENTER_VERTICAL | wxLEFT, space5);
    player_szr->Add(host_szr, 0, wxEXPAND, space5);
  }

  player_szr->Add(m_player_lbox, 1, wxEXPAND);

  if (m_is_hosting)
  {
    m_player_lbox->Bind(wxEVT_LISTBOX, &NetPlayDialog::OnPlayerSelect, this);
    m_kick_btn = new wxButton(parent, wxID_ANY, _("Kick Player"));
    m_kick_btn->Bind(wxEVT_BUTTON, &NetPlayDialog::OnKick, this);
    m_kick_btn->Disable();

    m_player_config_btn = new wxButton(parent, wxID_ANY, _("Assign Controller Ports"));
    m_player_config_btn->Bind(wxEVT_BUTTON, &NetPlayDialog::OnAssignPads, this);

    player_szr->Add(m_kick_btn, 0, wxEXPAND | wxTOP, space5);
    player_szr->Add(m_player_config_btn, 0, wxEXPAND | wxTOP, space5);
  }
  return player_szr;
}

wxSizer* NetPlayDialog::CreateBottomGUI(wxWindow* parent)
{
  const int space5 = FromDIP(5);

  wxBoxSizer* const bottom_szr = new wxBoxSizer(wxHORIZONTAL);
  if (m_is_hosting)
  {
    m_start_btn = new wxButton(parent, wxID_ANY, _("Start"));
    m_start_btn->Bind(wxEVT_BUTTON, &NetPlayDialog::OnStart, this);

    wxStaticText* buffer_lbl = new wxStaticText(parent, wxID_ANY, _("Buffer:"));
    wxSpinCtrl* const padbuf_spin =
        new wxSpinCtrl(parent, wxID_ANY, std::to_string(INITIAL_PAD_BUFFER_SIZE), wxDefaultPosition,
                       wxDefaultSize, wxSP_ARROW_KEYS, 0, 200, INITIAL_PAD_BUFFER_SIZE);
    padbuf_spin->Bind(wxEVT_SPINCTRL, &NetPlayDialog::OnAdjustBuffer, this);
    padbuf_spin->SetMinSize(WxUtils::GetTextWidgetMinSize(padbuf_spin));

    m_memcard_write = new wxCheckBox(parent, wxID_ANY, _("Write save/SD data"));

    m_copy_wii_save = new wxCheckBox(parent, wxID_ANY, _("Load Wii Save"));

    bottom_szr->Add(m_start_btn, 0, wxALIGN_CENTER_VERTICAL);
    bottom_szr->Add(buffer_lbl, 0, wxALIGN_CENTER_VERTICAL | wxLEFT, space5);
    bottom_szr->Add(padbuf_spin, 0, wxALIGN_CENTER_VERTICAL | wxLEFT, space5);
    bottom_szr->Add(m_memcard_write, 0, wxALIGN_CENTER_VERTICAL | wxLEFT, space5);
    bottom_szr->Add(m_copy_wii_save, 0, wxALIGN_CENTER_VERTICAL | wxLEFT, space5);
    bottom_szr->AddSpacer(space5);
  }

  m_record_chkbox = new wxCheckBox(parent, wxID_ANY, _("Record inputs"));

  wxButton* quit_btn = new wxButton(parent, wxID_ANY, _("Quit Netplay"));
  quit_btn->Bind(wxEVT_BUTTON, &NetPlayDialog::OnQuit, this);

  bottom_szr->Add(m_record_chkbox, 0, wxALIGN_CENTER_VERTICAL);
  bottom_szr->AddStretchSpacer();
  bottom_szr->Add(quit_btn);
  return bottom_szr;
}

NetPlayDialog::~NetPlayDialog()
{
  wxConfig::Get()->Write("NetWindowPosX", GetPosition().x);
  wxConfig::Get()->Write("NetWindowPosY", GetPosition().y);
  wxConfig::Get()->Write("NetWindowWidth", GetSize().GetWidth());
  wxConfig::Get()->Write("NetWindowHeight", GetSize().GetHeight());

  if (netplay_client)
  {
    delete netplay_client;
    netplay_client = nullptr;
  }
  if (netplay_server)
  {
    delete netplay_server;
    netplay_server = nullptr;
  }
  npd = nullptr;
}

void NetPlayDialog::OnChat(wxCommandEvent&)
{
  std::string text = WxStrToStr(m_chat_msg_text->GetValue());

  if (!text.empty())
  {
    netplay_client->SendChatMessage(text);
    m_chat_msg_text->Clear();
    AddChatMessage(ChatMessageType::UserOut, text);
  }
}

void NetPlayDialog::GetNetSettings(NetSettings& settings)
{
  SConfig& instance = SConfig::GetInstance();
  settings.m_CPUthread = instance.bCPUThread;
  settings.m_CPUcore = instance.iCPUCore;
  settings.m_EnableCheats = instance.bEnableCheats;
  settings.m_SelectedLanguage = instance.SelectedLanguage;
  settings.m_OverrideGCLanguage = instance.bOverrideGCLanguage;
  settings.m_ProgressiveScan = Config::Get(Config::SYSCONF_PROGRESSIVE_SCAN);
  settings.m_PAL60 = Config::Get(Config::SYSCONF_PAL60);
  settings.m_DSPHLE = instance.bDSPHLE;
  settings.m_DSPEnableJIT = instance.m_DSPEnableJIT;
  settings.m_WriteToMemcard = m_memcard_write->GetValue();
  settings.m_CopyWiiSave = m_copy_wii_save->GetValue();
  settings.m_OCEnable = instance.m_OCEnable;
  settings.m_OCFactor = instance.m_OCFactor;
  settings.m_EXIDevice[0] = instance.m_EXIDevice[0];
  settings.m_EXIDevice[1] = instance.m_EXIDevice[1];
}

std::string NetPlayDialog::FindGame(const std::string& target_game)
{
  // find path for selected game, sloppy..
  for (u32 i = 0; auto game = m_game_list->GetISO(i); ++i)
    if (target_game == game->GetUniqueIdentifier())
      return game->GetFileName();

  return "";
}

std::string NetPlayDialog::FindCurrentGame()
{
  return FindGame(m_selected_game);
}

void NetPlayDialog::OnStart(wxCommandEvent&)
{
  bool should_start = true;
  if (!netplay_client->DoAllPlayersHaveGame())
  {
    should_start = wxMessageBox(_("Not all players have the game. Do you really want to start?"),
                                _("Warning"), wxYES_NO) == wxYES;
  }

  if (!should_start)
    return;

  NetSettings settings;
  GetNetSettings(settings);
  netplay_server->SetNetSettings(settings);
  netplay_server->StartGame();
}

void NetPlayDialog::BootGame(const std::string& filename)
{
  wxCommandEvent play_event{DOLPHIN_EVT_BOOT_SOFTWARE, GetId()};
  play_event.SetString(StrToWxStr(filename));
  play_event.SetEventObject(this);

  AddPendingEvent(play_event);
}

void NetPlayDialog::StopGame()
{
  wxCommandEvent stop_event{DOLPHIN_EVT_STOP_SOFTWARE, GetId()};
  stop_event.SetEventObject(this);

  AddPendingEvent(stop_event);
}

// NetPlayUI methods called from ---NETPLAY--- thread
void NetPlayDialog::Update()
{
  wxThreadEvent evt(wxEVT_THREAD, 1);
  GetEventHandler()->AddPendingEvent(evt);
}

void NetPlayDialog::AppendChat(const std::string& msg)
{
  m_chat_msgs.Push(msg);
  // silly
  Update();
}

void NetPlayDialog::OnMsgChangeGame(const std::string& filename)
{
  wxThreadEvent* evt = new wxThreadEvent(wxEVT_THREAD, NP_GUI_EVT_CHANGE_GAME);
  evt->SetString(StrToWxStr(filename));
  GetEventHandler()->QueueEvent(evt);
}

void NetPlayDialog::OnMsgStartGame()
{
  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_START_GAME);
  GetEventHandler()->AddPendingEvent(evt);
  if (m_is_hosting)
  {
    m_start_btn->Disable();
    m_memcard_write->Disable();
    m_copy_wii_save->Disable();
    m_game_btn->Disable();
    m_player_config_btn->Disable();
  }

  m_record_chkbox->Disable();
}

void NetPlayDialog::OnMsgStopGame()
{
  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_STOP_GAME);
  GetEventHandler()->AddPendingEvent(evt);
  if (m_is_hosting)
  {
    m_start_btn->Enable();
    m_memcard_write->Enable();
    m_copy_wii_save->Enable();
    m_game_btn->Enable();
    m_player_config_btn->Enable();
  }
  m_record_chkbox->Enable();
}

void NetPlayDialog::OnAdjustBuffer(wxCommandEvent& event)
{
  const int val = ((wxSpinCtrl*)event.GetEventObject())->GetValue();
  netplay_server->AdjustPadBufferSize(val);
}

void NetPlayDialog::OnPadBufferChanged(u32 buffer)
{
  m_pad_buffer = buffer;
  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_PAD_BUFFER_CHANGE);
  GetEventHandler()->AddPendingEvent(evt);
}

void NetPlayDialog::OnDesync(u32 frame, const std::string& player)
{
  m_desync_frame = frame;
  m_desync_player = player;
  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_DESYNC);
  GetEventHandler()->AddPendingEvent(evt);
}

void NetPlayDialog::OnConnectionLost()
{
  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_CONNECTION_LOST);
  GetEventHandler()->AddPendingEvent(evt);
}

void NetPlayDialog::OnTraversalError(TraversalClient::FailureReason error)
{
  switch (error)
  {
  case TraversalClient::FailureReason::BadHost:
    PanicAlertT("Couldn't look up central server");
    break;
  case TraversalClient::FailureReason::VersionTooOld:
    PanicAlertT("Dolphin is too old for traversal server");
    break;
  case TraversalClient::FailureReason::ServerForgotAboutUs:
  case TraversalClient::FailureReason::SocketSendError:
  case TraversalClient::FailureReason::ResendTimeout:
    wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_TRAVERSAL_CONNECTION_ERROR);
    GetEventHandler()->AddPendingEvent(evt);
    break;
  }
}

void NetPlayDialog::OnQuit(wxCommandEvent&)
{
  Destroy();
}

// update gui
void NetPlayDialog::OnThread(wxThreadEvent& event)
{
  if (m_is_hosting && m_host_label && g_TraversalClient)
  {
    UpdateHostLabel();
  }

  // player list
  m_playerids.clear();
  std::string tmps;
  netplay_client->GetPlayerList(tmps, m_playerids);

  wxString selection;
  if (m_player_lbox->GetSelection() != wxNOT_FOUND)
    selection = m_player_lbox->GetString(m_player_lbox->GetSelection());

  m_player_lbox->Clear();
  std::istringstream ss(tmps);
  while (std::getline(ss, tmps))
    m_player_lbox->Append(StrToWxStr(tmps));

  // remove ping from selection string, in case it has changed
  selection.erase(selection.rfind('|') + 1);

  if (!selection.empty())
  {
    for (unsigned int i = 0; i < m_player_lbox->GetCount(); ++i)
    {
      if (selection == m_player_lbox->GetString(i).substr(0, selection.length()))
      {
        m_player_lbox->SetSelection(i);
        break;
      }
    }
  }

  // flash window in taskbar when someone joins if window isn't active
  static u8 numPlayers = 1;
  if (netplay_server != nullptr && numPlayers < m_playerids.size() && !HasFocus())
  {
    RequestUserAttention();
  }
  numPlayers = m_playerids.size();

  switch (event.GetId())
  {
  case NP_GUI_EVT_CHANGE_GAME:
    // update selected game :/
    {
      m_selected_game = WxStrToStr(event.GetString());

      wxString button_label = event.GetString();
      m_game_btn->SetLabel(button_label.Prepend(_(" Game : ")));
    }
    break;
  case NP_GUI_EVT_START_GAME:
    // client start game :/
    {
      netplay_client->StartGame(FindCurrentGame());
      std::string msg = "Starting game";
      AddChatMessage(ChatMessageType::Info, msg);
    }
    break;
  case NP_GUI_EVT_STOP_GAME:
    // client stop game
    {
      std::string msg = "Stopping game";
      AddChatMessage(ChatMessageType::Info, msg);
    }
    break;
  case NP_GUI_EVT_DISPLAY_MD5_DIALOG:
  {
    m_MD5_dialog = new MD5Dialog(this, netplay_server, netplay_client->GetPlayers(),
                                 event.GetString().ToStdString());
    m_MD5_dialog->Show();
  }
  break;
  case NP_GUI_EVT_MD5_PROGRESS:
  {
    if (m_MD5_dialog == nullptr || m_MD5_dialog->IsBeingDeleted())
      break;

    std::pair<int, int> payload = event.GetPayload<std::pair<int, int>>();
    m_MD5_dialog->SetProgress(payload.first, payload.second);
  }
  break;
  case NP_GUI_EVT_MD5_RESULT:
  {
    if (m_MD5_dialog == nullptr || m_MD5_dialog->IsBeingDeleted())
      break;

    std::pair<int, std::string> payload = event.GetPayload<std::pair<int, std::string>>();
    m_MD5_dialog->SetResult(payload.first, payload.second);
  }
  break;
  case NP_GUI_EVT_PAD_BUFFER_CHANGE:
  {
    std::string msg = StringFromFormat("Buffer size: %d", m_pad_buffer);

    if (g_ActiveConfig.bShowNetPlayMessages)
    {
      OSD::AddTypedMessage(OSD::MessageType::NetPlayBuffer, msg, OSD::Duration::NORMAL);
    }

    AddChatMessage(ChatMessageType::Info, msg);
  }
  break;
  case NP_GUI_EVT_DESYNC:
  {
    std::string msg = "Possible desync detected from player " + m_desync_player + " on frame " +
                      std::to_string(m_desync_frame);

    AddChatMessage(ChatMessageType::Error, msg);

    if (g_ActiveConfig.bShowNetPlayMessages)
    {
      OSD::AddMessage(msg, OSD::Duration::VERY_LONG, OSD::Color::RED);
    }
  }
  break;
  case NP_GUI_EVT_CONNECTION_LOST:
  {
    std::string msg = "Lost connection to server";
    AddChatMessage(ChatMessageType::Error, msg);
  }
  break;
  case NP_GUI_EVT_TRAVERSAL_CONNECTION_ERROR:
  {
    std::string msg = "Traversal server connection error";
    AddChatMessage(ChatMessageType::Error, msg);
  }
  }

  // chat messages
  while (m_chat_msgs.Size())
  {
    std::string s;
    m_chat_msgs.Pop(s);
    AddChatMessage(ChatMessageType::UserIn, s);

    if (g_ActiveConfig.bShowNetPlayMessages)
    {
      OSD::AddMessage(s, OSD::Duration::NORMAL, OSD::Color::GREEN);
    }
  }
}

void NetPlayDialog::OnChangeGame(wxCommandEvent&)
{
  ChangeGameDialog change_game_dialog(this, m_game_list);
  change_game_dialog.ShowModal();

  wxString game_name = change_game_dialog.GetChosenGameName();
  if (game_name.empty())
    return;

  m_selected_game = WxStrToStr(game_name);
  netplay_server->ChangeGame(m_selected_game);
  m_game_btn->SetLabel(game_name.Prepend(_(" Game : ")));
}

void NetPlayDialog::OnMD5ComputeRequested(wxCommandEvent&)
{
  MD5Target selection = static_cast<MD5Target>(m_MD5_choice->GetSelection());
  std::string file_identifier;
  ChangeGameDialog change_game_dialog(this, m_game_list);

  m_MD5_choice->SetSelection(0);

  switch (selection)
  {
  case MD5Target::CurrentGame:
    file_identifier = m_selected_game;
    break;

  case MD5Target::OtherGame:
    change_game_dialog.ShowModal();

    file_identifier = WxStrToStr(change_game_dialog.GetChosenGameName());
    if (file_identifier.empty())
      return;
    break;

  case MD5Target::SdCard:
    file_identifier = WII_SDCARD;
    break;

  default:
    return;
  }

  netplay_server->ComputeMD5(file_identifier);
}

void NetPlayDialog::ShowMD5Dialog(const std::string& file_identifier)
{
  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_DISPLAY_MD5_DIALOG);
  evt.SetString(file_identifier);
  GetEventHandler()->AddPendingEvent(evt);
}

void NetPlayDialog::SetMD5Progress(int pid, int progress)
{
  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_MD5_PROGRESS);
  evt.SetPayload(std::pair<int, int>(pid, progress));
  GetEventHandler()->AddPendingEvent(evt);
}

void NetPlayDialog::SetMD5Result(int pid, const std::string& result)
{
  wxThreadEvent evt(wxEVT_THREAD, NP_GUI_EVT_MD5_RESULT);
  evt.SetPayload(std::pair<int, std::string>(pid, result));
  GetEventHandler()->AddPendingEvent(evt);
}

void NetPlayDialog::AbortMD5()
{
  if (m_MD5_dialog != nullptr && !m_MD5_dialog->IsBeingDeleted())
    m_MD5_dialog->Destroy();
}

void NetPlayDialog::OnAssignPads(wxCommandEvent&)
{
  PadMapDialog pmd(this, netplay_server, netplay_client);
  pmd.ShowModal();

  netplay_server->SetPadMapping(pmd.GetModifiedPadMappings());
  netplay_server->SetWiimoteMapping(pmd.GetModifiedWiimoteMappings());
}

void NetPlayDialog::OnKick(wxCommandEvent&)
{
  wxString selection = m_player_lbox->GetStringSelection();
  unsigned long player = 0;
  selection.substr(selection.rfind('[') + 1, selection.rfind(']')).ToULong(&player);

  netplay_server->KickPlayer((u8)player);

  m_player_lbox->SetSelection(wxNOT_FOUND);
  wxCommandEvent event;
  OnPlayerSelect(event);
}

void NetPlayDialog::OnPlayerSelect(wxCommandEvent&)
{
  m_kick_btn->Enable(m_player_lbox->GetSelection() > 0);
}

bool NetPlayDialog::IsRecording()
{
  return m_record_chkbox->GetValue();
}

void NetPlayDialog::OnCopyIP(wxCommandEvent&)
{
  if (m_host_copy_btn_is_retry)
  {
    g_TraversalClient->ReconnectToServer();
    Update();
  }
  else
  {
    if (wxTheClipboard->Open())
    {
      wxTheClipboard->SetData(new wxTextDataObject(m_host_label->GetLabel()));
      wxTheClipboard->Close();
    }
  }
}

void NetPlayDialog::OnChoice(wxCommandEvent& event)
{
  UpdateHostLabel();
}

void NetPlayDialog::UpdateHostLabel()
{
  wxString label = _(" (internal IP)");
  auto DeLabel = [=](wxString str) {
    if (str == _("Localhost"))
      return std::string("!local!");
    return WxStrToStr(str.Left(str.Len() - label.Len()));
  };
  auto EnLabel = [=](std::string str) -> wxString {
    if (str == "!local!")
      return _("Localhost");
    return StrToWxStr(str) + label;
  };
  int sel = m_host_type_choice->GetSelection();
  if (sel == 0)
  {
    // the traversal ID
    switch (g_TraversalClient->m_State)
    {
    case TraversalClient::Connecting:
      m_host_label->SetForegroundColour(*wxLIGHT_GREY);
      m_host_label->SetLabel("...");
      m_host_copy_btn->SetLabel(_("Copy"));
      m_host_copy_btn->Disable();
      break;
    case TraversalClient::Connected:
      m_host_label->SetForegroundColour(*wxBLACK);
      m_host_label->SetLabel(
          wxString(g_TraversalClient->m_HostId.data(), g_TraversalClient->m_HostId.size()));
      m_host_copy_btn->SetLabel(_("Copy"));
      m_host_copy_btn->Enable();
      m_host_copy_btn_is_retry = false;
      break;
    case TraversalClient::Failure:
      m_host_label->SetForegroundColour(*wxBLACK);
      m_host_label->SetLabel("...");
      m_host_copy_btn->SetLabel(_("Retry"));
      m_host_copy_btn->Enable();
      m_host_copy_btn_is_retry = true;
      break;
    }
  }
  else if (sel != wxNOT_FOUND)  // wxNOT_FOUND shouldn't generally happen
  {
    m_host_label->SetForegroundColour(*wxBLACK);
    m_host_label->SetLabel(
        netplay_server->GetInterfaceHost(DeLabel(m_host_type_choice->GetString(sel))));
    m_host_copy_btn->SetLabel(_("Copy"));
    m_host_copy_btn->Enable();
    m_host_copy_btn_is_retry = false;
  }

  auto set = netplay_server->GetInterfaceSet();
  for (const std::string& iface : set)
  {
    wxString wxIface = EnLabel(iface);
    if (m_host_type_choice->FindString(wxIface) == wxNOT_FOUND)
      m_host_type_choice->Append(wxIface);
  }
  for (unsigned i = 1, count = m_host_type_choice->GetCount(); i != count; i++)
  {
    if (set.find(DeLabel(m_host_type_choice->GetString(i))) == set.end())
    {
      m_host_type_choice->Delete(i);
      i--;
      count--;
    }
  }
}

void NetPlayDialog::AddChatMessage(ChatMessageType type, const std::string& msg)
{
  wxColour colour = *wxBLACK;
  std::string printed_msg = msg;

  switch (type)
  {
  case ChatMessageType::Info:
    colour = wxColour(0, 150, 150);  // cyan
    break;

  case ChatMessageType::Error:
    colour = *wxRED;
    break;

  case ChatMessageType::UserIn:
    colour = wxColour(0, 150, 0);  // green
    printed_msg = "▶ " + msg;
    break;

  case ChatMessageType::UserOut:
    colour = wxColour(100, 100, 100);  // grey
    printed_msg = "◀ " + msg;
    break;
  }

  if (type == ChatMessageType::Info || type == ChatMessageType::Error)
    printed_msg = "― " + msg + " ―";

  m_chat_text->SetDefaultStyle(wxTextAttr(colour));
  m_chat_text->AppendText(StrToWxStr(printed_msg + "\n"));
}