// Copyright 2017 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#include "DolphinQt2/Settings/GeneralPane.h"

#include <QCheckBox>
#include <QComboBox>
#include <QFormLayout>
#include <QGroupBox>
#include <QLabel>
#include <QMessageBox>
#include <QPushButton>
#include <QRadioButton>
#include <QSlider>
#include <QVBoxLayout>
#include <QWidget>

#include "Core/Analytics.h"
#include "Core/ConfigManager.h"
#include "Core/PowerPC/PowerPC.h"
#include "DolphinQt2/Settings.h"

GeneralPane::GeneralPane(QWidget* parent) : QWidget(parent)
{
  CreateLayout();
  ConnectLayout();

  LoadConfig();
}

void GeneralPane::CreateLayout()
{
  m_main_layout = new QVBoxLayout;
  // Create layout here
  CreateBasic();
#if defined(USE_ANALYTICS) && USE_ANALYTICS
  CreateAnalytics();
#endif
  CreateAdvanced();
  m_main_layout->addStretch(1);
  setLayout(m_main_layout);
}

void GeneralPane::ConnectLayout()
{
  connect(m_checkbox_dualcore, &QCheckBox::clicked, this, &GeneralPane::OnSaveConfig);
  connect(m_checkbox_cheats, &QCheckBox::clicked, this, &GeneralPane::OnSaveConfig);
  // Advanced
  connect(m_checkbox_force_ntsc, &QCheckBox::clicked, this, &GeneralPane::OnSaveConfig);
  connect(m_combobox_speedlimit,
          static_cast<void (QComboBox::*)(const QString&)>(&QComboBox::activated),
          [this](const QString& text) { OnSaveConfig(); });
  connect(m_radio_interpreter, &QRadioButton::clicked, this, &GeneralPane::OnSaveConfig);
  connect(m_radio_cached_interpreter, &QRadioButton::clicked, this, &GeneralPane::OnSaveConfig);
  connect(m_radio_jit, &QRadioButton::clicked, this, &GeneralPane::OnSaveConfig);

#if defined(USE_ANALYTICS) && USE_ANALYTICS
  connect(m_checkbox_enable_analytics, &QCheckBox::clicked, this, &GeneralPane::OnSaveConfig);
  connect(m_button_generate_new_identity, &QPushButton::clicked, this,
          &GeneralPane::GenerateNewIdentity);
#endif
}

void GeneralPane::CreateBasic()
{
  auto* basic_group = new QGroupBox(tr("Basic Settings"));
  auto* basic_group_layout = new QVBoxLayout;
  basic_group->setLayout(basic_group_layout);
  m_main_layout->addWidget(basic_group);

  m_checkbox_dualcore = new QCheckBox(tr("Enable Dual Core (speedup)"));
  basic_group_layout->addWidget(m_checkbox_dualcore);

  m_checkbox_cheats = new QCheckBox(tr("Enable Cheats"));
  basic_group_layout->addWidget(m_checkbox_cheats);

  auto* speed_limit_layout = new QFormLayout;
  basic_group_layout->addLayout(speed_limit_layout);

  m_combobox_speedlimit = new QComboBox();
  m_combobox_speedlimit->setMaximumWidth(300);

  m_combobox_speedlimit->addItem(tr("Unlimited"));
  for (int i = 10; i <= 200; i += 10)  // from 10% to 200%
  {
    QString str;
    if (i != 100)
      str.sprintf("%i%%", i);
    else
      str.sprintf("%i%% (Normal Speed)", i);

    m_combobox_speedlimit->addItem(str);
  }

  speed_limit_layout->addRow(tr("&Speed Limit:"), m_combobox_speedlimit);
}

#if defined(USE_ANALYTICS) && USE_ANALYTICS
void GeneralPane::CreateAnalytics()
{
  auto* analytics_group = new QGroupBox(tr("Usage Statistics Reporting"));
  auto* analytics_group_layout = new QVBoxLayout;
  analytics_group->setLayout(analytics_group_layout);
  m_main_layout->addWidget(analytics_group);

  m_checkbox_enable_analytics = new QCheckBox(tr("Enable Usage Statistics Reporting"));
  m_button_generate_new_identity = new QPushButton(tr("Generate a New Statistics Identity"));
  m_button_generate_new_identity->setMaximumWidth(300);
  analytics_group_layout->addWidget(m_checkbox_enable_analytics);
  analytics_group_layout->addWidget(m_button_generate_new_identity);
}
#endif

void GeneralPane::CreateAdvanced()
{
  auto* advanced_group = new QGroupBox(tr("Advanced Settings"));
  auto* advanced_group_layout = new QVBoxLayout;
  advanced_group->setLayout(advanced_group_layout);
  m_main_layout->addWidget(advanced_group);

  // Speed Limit
  auto* engine_group = new QGroupBox(tr("CPU Emulation Engine"));
  auto* engine_group_layout = new QVBoxLayout;
  engine_group->setLayout(engine_group_layout);
  advanced_group_layout->addWidget(engine_group);

  m_radio_interpreter = new QRadioButton(tr("Interpreter (slowest)"));
  m_radio_cached_interpreter = new QRadioButton(tr("Cached Interpreter (slower)"));
  m_radio_jit = new QRadioButton(tr("JIT Recompiler (recommended)"));

  engine_group_layout->addWidget(m_radio_interpreter);
  engine_group_layout->addWidget(m_radio_cached_interpreter);
  engine_group_layout->addWidget(m_radio_jit);

  // NTSC-J
  m_checkbox_force_ntsc = new QCheckBox(tr("Force Console as NTSC-J"));
  advanced_group_layout->addWidget(m_checkbox_force_ntsc);
}

void GeneralPane::LoadConfig()
{
  m_checkbox_force_ntsc->setChecked(Settings().GetForceNTSCJ());
  m_checkbox_enable_analytics->setChecked(Settings().GetAnalyticsEnabled());
  m_checkbox_dualcore->setChecked(SConfig::GetInstance().bCPUThread);
  m_checkbox_cheats->setChecked(SConfig::GetInstance().bEnableCheats);
  int selection = qRound(Settings().GetEmulationSpeed() * 10);
  if (selection < m_combobox_speedlimit->count())
    m_combobox_speedlimit->setCurrentIndex(selection);
  m_checkbox_dualcore->setChecked(SConfig::GetInstance().bCPUThread);

  switch (SConfig::GetInstance().iCPUCore)
  {
  case PowerPC::CPUCore::CORE_INTERPRETER:
    m_radio_interpreter->setChecked(true);
    break;
  case PowerPC::CPUCore::CORE_CACHEDINTERPRETER:
    m_radio_cached_interpreter->setChecked(true);
    break;
  case PowerPC::CPUCore::CORE_JIT64:
    m_radio_jit->setChecked(true);
    break;
  case PowerPC::CPUCore::CORE_JITARM64:
    // TODO: Implement JITARM
    break;
  default:
    break;
  }
}

void GeneralPane::OnSaveConfig()
{
  Settings().SetForceNTSCJ(m_checkbox_force_ntsc->isChecked());
  Settings().SetAnalyticsEnabled(m_checkbox_enable_analytics->isChecked());
  SConfig::GetInstance().bCPUThread = m_checkbox_dualcore->isChecked();
  SConfig::GetInstance().bEnableCheats = m_checkbox_cheats->isChecked();
  SConfig::GetInstance().m_EmulationSpeed = m_combobox_speedlimit->currentIndex() * 0.1f;
  int engine_value = 0;
  if (m_radio_interpreter->isChecked())
    engine_value = PowerPC::CPUCore::CORE_INTERPRETER;
  else if (m_radio_cached_interpreter->isChecked())
    engine_value = PowerPC::CPUCore::CORE_CACHEDINTERPRETER;
  else if (m_radio_jit->isChecked())
    engine_value = PowerPC::CPUCore::CORE_JIT64;
  else
    engine_value = PowerPC::CPUCore::CORE_JIT64;

  SConfig::GetInstance().iCPUCore = engine_value;
}

#if defined(USE_ANALYTICS) && USE_ANALYTICS
void GeneralPane::GenerateNewIdentity()
{
  DolphinAnalytics::Instance()->GenerateNewIdentity();
  QMessageBox message_box;
  message_box.setIcon(QMessageBox::Information);
  message_box.setWindowTitle(tr("Identity Generation"));
  message_box.setText(tr("New identity generated."));
  message_box.exec();
}
#endif