// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.

#include <QColorDialog>
#ifdef __APPLE__
#include <QMessageBox>
#endif
#include "citra_qt/configuration/configure_graphics.h"
#include "core/core.h"
#include "core/settings.h"
#include "ui_configure_graphics.h"

ConfigureGraphics::ConfigureGraphics(QWidget* parent)
    : QWidget(parent), ui(new Ui::ConfigureGraphics) {

    ui->setupUi(this);
    this->setConfiguration();

    ui->toggle_vsync->setEnabled(!Core::System::GetInstance().IsPoweredOn());
    ui->frame_limit->setEnabled(Settings::values.use_frame_limit);
    connect(ui->toggle_frame_limit, &QCheckBox::stateChanged, ui->frame_limit,
            &QSpinBox::setEnabled);

    ui->layoutBox->setEnabled(!Settings::values.custom_layout);

    ui->hw_renderer_group->setEnabled(ui->toggle_hw_renderer->isChecked());
    connect(ui->toggle_hw_renderer, &QCheckBox::stateChanged, ui->hw_renderer_group,
            &QWidget::setEnabled);
    ui->hw_shader_group->setEnabled(ui->toggle_hw_shader->isChecked());
    connect(ui->toggle_hw_shader, &QCheckBox::stateChanged, ui->hw_shader_group,
            &QWidget::setEnabled);
#ifdef __APPLE__
    connect(ui->toggle_hw_shader, &QCheckBox::stateChanged, this, [this](int state) {
        if (state == Qt::Checked) {
            QMessageBox::warning(
                this, tr("Hardware Shader Warning"),
                tr("Hardware Shader support is broken on macOS, and will cause graphical issues "
                   "like showing a black screen.<br><br>The option is only there for "
                   "test/development purposes. If you experience graphical issues with Hardware "
                   "Shader, please turn it off."));
        }
    });
#endif
    connect(ui->bg_button, &QPushButton::clicked, this, [this] {
        const QColor new_bg_color = QColorDialog::getColor(bg_color);
        if (!new_bg_color.isValid())
            return;
        bg_color = new_bg_color;
        QPixmap pixmap(ui->bg_button->size());
        pixmap.fill(bg_color);
        const QIcon color_icon(pixmap);
        ui->bg_button->setIcon(color_icon);
    });
}

ConfigureGraphics::~ConfigureGraphics() = default;

void ConfigureGraphics::setConfiguration() {
    ui->toggle_hw_renderer->setChecked(Settings::values.use_hw_renderer);
    ui->toggle_hw_shader->setChecked(Settings::values.use_hw_shader);
    ui->toggle_accurate_gs->setChecked(Settings::values.shaders_accurate_gs);
    ui->toggle_accurate_mul->setChecked(Settings::values.shaders_accurate_mul);
    ui->toggle_shader_jit->setChecked(Settings::values.use_shader_jit);
    ui->resolution_factor_combobox->setCurrentIndex(Settings::values.resolution_factor);
    ui->toggle_vsync->setChecked(Settings::values.use_vsync);
    ui->toggle_frame_limit->setChecked(Settings::values.use_frame_limit);
    ui->frame_limit->setValue(Settings::values.frame_limit);
    ui->factor_3d->setValue(Settings::values.factor_3d);
    ui->toggle_3d->setChecked(Settings::values.toggle_3d);
    ui->layout_combobox->setCurrentIndex(static_cast<int>(Settings::values.layout_option));
    ui->swap_screen->setChecked(Settings::values.swap_screen);
    bg_color = QColor::fromRgbF(Settings::values.bg_red, Settings::values.bg_green,
                                Settings::values.bg_blue);
    QPixmap pixmap(ui->bg_button->size());
    pixmap.fill(bg_color);
    const QIcon color_icon(pixmap);
    ui->bg_button->setIcon(color_icon);
}

void ConfigureGraphics::applyConfiguration() {
    Settings::values.use_hw_renderer = ui->toggle_hw_renderer->isChecked();
    Settings::values.use_hw_shader = ui->toggle_hw_shader->isChecked();
    Settings::values.shaders_accurate_gs = ui->toggle_accurate_gs->isChecked();
    Settings::values.shaders_accurate_mul = ui->toggle_accurate_mul->isChecked();
    Settings::values.use_shader_jit = ui->toggle_shader_jit->isChecked();
    Settings::values.resolution_factor =
        static_cast<u16>(ui->resolution_factor_combobox->currentIndex());
    Settings::values.use_vsync = ui->toggle_vsync->isChecked();
    Settings::values.use_frame_limit = ui->toggle_frame_limit->isChecked();
    Settings::values.frame_limit = ui->frame_limit->value();
    Settings::values.factor_3d = ui->factor_3d->value();
    Settings::values.toggle_3d = ui->toggle_3d->isChecked();
    Settings::values.layout_option =
        static_cast<Settings::LayoutOption>(ui->layout_combobox->currentIndex());
    Settings::values.swap_screen = ui->swap_screen->isChecked();
    Settings::values.bg_red = static_cast<float>(bg_color.redF());
    Settings::values.bg_green = static_cast<float>(bg_color.greenF());
    Settings::values.bg_blue = static_cast<float>(bg_color.blueF());
}

void ConfigureGraphics::retranslateUi() {
    ui->retranslateUi(this);
}