#include "biossettingswidget.h"
#include "core/bios.h"
#include "qthost.h"
#include "qtutils.h"
#include "settingsdialog.h"
#include "settingwidgetbinder.h"
#include <QtWidgets/QFileDialog>
#include <algorithm>

BIOSSettingsWidget::BIOSSettingsWidget(SettingsDialog* dialog, QWidget* parent) : QWidget(parent), m_dialog(dialog)
{
  SettingsInterface* sif = dialog->getSettingsInterface();

  m_ui.setupUi(this);

  SettingWidgetBinder::BindWidgetToBoolSetting(sif, m_ui.enableTTYOutput, "BIOS", "PatchTTYEnable", false);
  SettingWidgetBinder::BindWidgetToBoolSetting(sif, m_ui.fastBoot, "BIOS", "PatchFastBoot", false);

  dialog->registerWidgetHelp(m_ui.fastBoot, tr("Fast Boot"), tr("Unchecked"),
                             tr("Patches the BIOS to skip the console's boot animation. Does not work with all games, "
                                "but usually safe to enable."));
  dialog->registerWidgetHelp(
    m_ui.enableTTYOutput, tr("Enable TTY Output"), tr("Unchecked"),
    tr("Patches the BIOS to log calls to printf(). Only use when debugging, can break games."));

  connect(m_ui.imageNTSCJ, QOverload<int>::of(&QComboBox::currentIndexChanged), [this](int index) {
    if (m_dialog->isPerGameSettings() && index == 0)
    {
      m_dialog->removeSettingValue("BIOS", "PathNTSCJ");
    }
    else
    {
      m_dialog->setStringSettingValue("BIOS", "PathNTSCJ",
                                      m_ui.imageNTSCJ->itemData(index).toString().toStdString().c_str());
    }
  });
  connect(m_ui.imageNTSCU, QOverload<int>::of(&QComboBox::currentIndexChanged), [this](int index) {
    if (m_dialog->isPerGameSettings() && index == 0)
    {
      m_dialog->removeSettingValue("BIOS", "PathNTSCU");
    }
    else
    {
      m_dialog->setStringSettingValue("BIOS", "PathNTSCU",
                                      m_ui.imageNTSCU->itemData(index).toString().toStdString().c_str());
    }
  });
  connect(m_ui.imagePAL, QOverload<int>::of(&QComboBox::currentIndexChanged), [this](int index) {
    if (m_dialog->isPerGameSettings() && index == 0)
    {
      m_dialog->removeSettingValue("BIOS", "PathPAL");
    }
    else
    {
      m_dialog->setStringSettingValue("BIOS", "PathPAL",
                                      m_ui.imagePAL->itemData(index).toString().toStdString().c_str());
    }
  });

  connect(m_ui.refresh, &QPushButton::clicked, this, &BIOSSettingsWidget::refreshList);

  m_ui.searchDirectory->setText(QString::fromStdString(EmuFolders::Bios));
  SettingWidgetBinder::BindWidgetToFolderSetting(sif, m_ui.searchDirectory, m_ui.browseSearchDirectory,
                                                 m_ui.openSearchDirectory, nullptr, "BIOS", "SearchDirectory",
                                                 Path::Combine(EmuFolders::DataRoot, "bios"));
  connect(m_ui.searchDirectory, &QLineEdit::textChanged, this, &BIOSSettingsWidget::refreshList);
  refreshList();
}

BIOSSettingsWidget::~BIOSSettingsWidget() = default;

void BIOSSettingsWidget::refreshList()
{
  auto images = BIOS::FindBIOSImagesInDirectory(m_ui.searchDirectory->text().toUtf8().constData());
  populateDropDownForRegion(ConsoleRegion::NTSC_J, m_ui.imageNTSCJ, images);
  populateDropDownForRegion(ConsoleRegion::NTSC_U, m_ui.imageNTSCU, images);
  populateDropDownForRegion(ConsoleRegion::PAL, m_ui.imagePAL, images);

  setDropDownValue(m_ui.imageNTSCJ, m_dialog->getStringValue("BIOS", "PathNTSCJ", std::nullopt));
  setDropDownValue(m_ui.imageNTSCU, m_dialog->getStringValue("BIOS", "PathNTSCU", std::nullopt));
  setDropDownValue(m_ui.imagePAL, m_dialog->getStringValue("BIOS", "PathPAL", std::nullopt));
}

void BIOSSettingsWidget::populateDropDownForRegion(ConsoleRegion region, QComboBox* cb,
                                                   std::vector<std::pair<std::string, const BIOS::ImageInfo*>>& images)
{
  QSignalBlocker sb(cb);
  cb->clear();

  if (m_dialog->isPerGameSettings())
    cb->addItem(QIcon(QStringLiteral(":/icons/system-search.png")), tr("Use Global Setting"));

  cb->addItem(QIcon(QStringLiteral(":/icons/system-search.png")), tr("Auto-Detect"));

  std::sort(images.begin(), images.end(), [region](const auto& left, const auto& right) {
    const bool left_region_match = (left.second && left.second->region == region);
    const bool right_region_match = (right.second && right.second->region == region);
    if (left_region_match && !right_region_match)
      return true;
    else if (right_region_match && !left_region_match)
      return false;

    return left.first < right.first;
  });

  for (const auto& [name, info] : images)
  {
    QString name_str(QString::fromStdString(name));
    cb->addItem(QtUtils::GetIconForRegion(info ? info->region : ConsoleRegion::Count),
                QStringLiteral("%1 (%2)")
                  .arg(info ? QString(info->description) : qApp->translate("BIOSSettingsWidget", "Unknown"))
                  .arg(name_str),
                QVariant(name_str));
  }
}

void BIOSSettingsWidget::setDropDownValue(QComboBox* cb, const std::optional<std::string>& name)
{
  QSignalBlocker sb(cb);

  if (!name.has_value() || name->empty())
  {
    cb->setCurrentIndex((m_dialog->isPerGameSettings() && name.has_value()) ? 1 : 0);
    return;
  }

  QString qname(QString::fromStdString(name.value()));
  for (int i = 1; i < cb->count(); i++)
  {
    if (cb->itemData(i) == qname)
    {
      cb->setCurrentIndex(i);
      return;
    }
  }

  cb->addItem(qname, QVariant(qname));
  cb->setCurrentIndex(cb->count() - 1);
}