// Copyright 2010 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#pragma once

#include <cstddef>
#include <map>
#include <string>
#include <vector>
#include <wx/button.h>
#include <wx/checkbox.h>
#include <wx/choice.h>
#include <wx/dialog.h>
#include <wx/msgdlg.h>
#include <wx/radiobut.h>
#include <wx/spinctrl.h>
#include <wx/stattext.h>

#include "Common/CommonTypes.h"
#include "Common/SysConf.h"
#include "Core/ConfigManager.h"
#include "Core/Core.h"
#include "DolphinWX/DolphinSlider.h"
#include "DolphinWX/PostProcessingConfigDiag.h"
#include "DolphinWX/WxUtils.h"
#include "VideoCommon/PostProcessing.h"
#include "VideoCommon/VideoBackendBase.h"
#include "VideoCommon/VideoConfig.h"

class wxBoxSizer;
class wxControl;
class wxPanel;

template <typename W>
class BoolSetting : public W
{
public:
  BoolSetting(wxWindow* parent, const wxString& label, const wxString& tooltip, bool& setting,
              bool reverse = false, long style = 0);

  void UpdateValue(wxCommandEvent& ev)
  {
    m_setting = (ev.GetInt() != 0) ^ m_reverse;
    ev.Skip();
  }

private:
  bool& m_setting;
  const bool m_reverse;
};

typedef BoolSetting<wxCheckBox> SettingCheckBox;
typedef BoolSetting<wxRadioButton> SettingRadioButton;

template <typename T>
class IntegerSetting : public wxSpinCtrl
{
public:
  IntegerSetting(wxWindow* parent, const wxString& label, T& setting, int minVal, int maxVal,
                 long style = 0);

  void UpdateValue(wxCommandEvent& ev)
  {
    m_setting = ev.GetInt();
    ev.Skip();
  }

private:
  T& m_setting;
};

class SettingChoice : public wxChoice
{
public:
  SettingChoice(wxWindow* parent, int& setting, const wxString& tooltip, int num = 0,
                const wxString choices[] = nullptr, long style = 0);
  void UpdateValue(wxCommandEvent& ev);

private:
  int& m_setting;
};

class VideoConfigDiag : public wxDialog
{
public:
  VideoConfigDiag(wxWindow* parent, const std::string& title);

protected:
  void Event_Backend(wxCommandEvent& ev)
  {
    auto& new_backend = g_available_video_backends[ev.GetInt()];

    if (g_video_backend != new_backend.get())
    {
      bool do_switch = !Core::IsRunning();
      if (new_backend->GetName() == "Software Renderer")
      {
        do_switch =
            (wxYES ==
             wxMessageBox(_("Software rendering is an order of magnitude slower than using the "
                            "other backends.\nIt's only useful for debugging purposes.\nDo you "
                            "really want to enable software rendering? If unsure, select 'No'."),
                          _("Warning"), wxYES_NO | wxNO_DEFAULT | wxICON_EXCLAMATION, this));
      }

      if (do_switch)
      {
        // TODO: Only reopen the dialog if the software backend is
        // selected (make sure to reinitialize backend info)
        // reopen the dialog
        Close();

        g_video_backend = new_backend.get();
        SConfig::GetInstance().m_strVideoBackend = g_video_backend->GetName();

        g_video_backend->ShowConfig(GetParent());
      }
      else
      {
        // Select current backend again
        choice_backend->SetStringSelection(StrToWxStr(g_video_backend->GetName()));
      }
    }

    ev.Skip();
  }
  void Event_Adapter(wxCommandEvent& ev) { ev.Skip(); }  // TODO
  void Event_DisplayResolution(wxCommandEvent& ev);

  void Event_ProgressiveScan(wxCommandEvent& ev)
  {
    SConfig::GetInstance().m_SYSCONF->SetData("IPL.PGS", ev.GetInt());
    SConfig::GetInstance().bProgressive = ev.IsChecked();

    ev.Skip();
  }

  void Event_Stc(wxCommandEvent& ev)
  {
    int samples[] = {0, 512, 128};
    vconfig.iSafeTextureCache_ColorSamples = samples[ev.GetInt()];

    ev.Skip();
  }

  void Event_PPShader(wxCommandEvent& ev)
  {
    const int sel = ev.GetInt();
    if (sel)
      vconfig.sPostProcessingShader = WxStrToStr(ev.GetString());
    else
      vconfig.sPostProcessingShader.clear();

    // Should we enable the configuration button?
    PostProcessingShaderConfiguration postprocessing_shader;
    postprocessing_shader.LoadShader(vconfig.sPostProcessingShader);
    button_config_pp->Enable(postprocessing_shader.HasOptions());

    ev.Skip();
  }

  void Event_ConfigurePPShader(wxCommandEvent& ev)
  {
    PostProcessingConfigDiag dialog(this, vconfig.sPostProcessingShader);
    dialog.ShowModal();

    ev.Skip();
  }

  void Event_StereoDepth(wxCommandEvent& ev)
  {
    vconfig.iStereoDepth = ev.GetInt();

    ev.Skip();
  }

  void Event_StereoConvergence(wxCommandEvent& ev)
  {
    // Snap the slider
    int value = ev.GetInt();
    if (90 < value && value < 110)
      conv_slider->SetValue(100);

    vconfig.iStereoConvergencePercentage = conv_slider->GetValue();

    ev.Skip();
  }

  void Event_StereoMode(wxCommandEvent& ev)
  {
    if (vconfig.backend_info.bSupportsPostProcessing)
    {
      // Anaglyph overrides post-processing shaders
      choice_ppshader->Clear();
    }

    ev.Skip();
  }

  void Event_Close(wxCommandEvent&);

  // Enables/disables UI elements depending on current config
  void OnUpdateUI(wxUpdateUIEvent& ev)
  {
    // Anti-aliasing
    choice_aamode->Enable(vconfig.backend_info.AAModes.size() > 1);
    text_aamode->Enable(vconfig.backend_info.AAModes.size() > 1);

    // XFB
    virtual_xfb->Enable(vconfig.bUseXFB);
    real_xfb->Enable(vconfig.bUseXFB);

    // custom textures
    cache_hires_textures->Enable(vconfig.bHiresTextures);

    // Repopulating the post-processing shaders can't be done from an event
    if (choice_ppshader && choice_ppshader->IsEmpty())
      PopulatePostProcessingShaders();

    // Things which shouldn't be changed during emulation
    if (Core::IsRunning())
    {
      choice_backend->Disable();
      label_backend->Disable();

      // D3D only
      if (vconfig.backend_info.Adapters.size())
      {
        choice_adapter->Disable();
        label_adapter->Disable();
      }

#ifndef __APPLE__
      // This isn't supported on OS X.

      choice_display_resolution->Disable();
      label_display_resolution->Disable();
#endif

      progressive_scan_checkbox->Disable();
      render_to_main_checkbox->Disable();
    }
    ev.Skip();
  }

  // Creates controls and connects their enter/leave window events to Evt_Enter/LeaveControl
  SettingCheckBox* CreateCheckBox(wxWindow* parent, const wxString& label,
                                  const wxString& description, bool& setting, bool reverse = false,
                                  long style = 0);
  SettingChoice* CreateChoice(wxWindow* parent, int& setting, const wxString& description,
                              int num = 0, const wxString choices[] = nullptr, long style = 0);
  SettingRadioButton* CreateRadioButton(wxWindow* parent, const wxString& label,
                                        const wxString& description, bool& setting,
                                        bool reverse = false, long style = 0);

  // Same as above but only connects enter/leave window events
  wxControl* RegisterControl(wxControl* const control, const wxString& description);

  void Evt_EnterControl(wxMouseEvent& ev);
  void Evt_LeaveControl(wxMouseEvent& ev);
  void CreateDescriptionArea(wxPanel* const page, wxBoxSizer* const sizer);
  void PopulatePostProcessingShaders();
  void PopulateAAList();
  void OnAAChanged(wxCommandEvent& ev);

  wxChoice* choice_backend;
  wxChoice* choice_adapter;
  wxChoice* choice_display_resolution;

  wxStaticText* label_backend;
  wxStaticText* label_adapter;

  wxStaticText* text_aamode;
  wxChoice* choice_aamode;
  DolphinSlider* conv_slider;

  wxStaticText* label_display_resolution;

  wxButton* button_config_pp;

  SettingCheckBox* borderless_fullscreen;
  SettingCheckBox* render_to_main_checkbox;

  SettingRadioButton* virtual_xfb;
  SettingRadioButton* real_xfb;

  SettingCheckBox* cache_hires_textures;

  wxCheckBox* progressive_scan_checkbox;

  wxChoice* choice_ppshader;

  std::map<wxWindow*, wxString> ctrl_descs;       // maps setting controls to their descriptions
  std::map<wxWindow*, wxStaticText*> desc_texts;  // maps dialog tabs (which are the parents of the
                                                  // setting controls) to their description text
                                                  // objects

  VideoConfig& vconfig;

  size_t m_msaa_modes;
};