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

#include <QDirIterator>
#include "citra_qt/configuration/configure_general.h"
#include "citra_qt/ui_settings.h"
#include "core/core.h"
#include "core/settings.h"
#include "ui_configure_general.h"

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

    ui->setupUi(this);
    ui->language_combobox->addItem(tr("<System>"), QString(""));
    ui->language_combobox->addItem(tr("English"), QString("en"));
    QDirIterator it(":/languages", QDirIterator::NoIteratorFlags);
    while (it.hasNext()) {
        QString locale = it.next();
        locale.truncate(locale.lastIndexOf('.'));
        locale.remove(0, locale.lastIndexOf('/') + 1);
        QString lang = QLocale::languageToString(QLocale(locale).language());
        ui->language_combobox->addItem(lang, locale);
    }

    // Unlike other configuration changes, interface language changes need to be reflected on the
    // interface immediately. This is done by passing a signal to the main window, and then
    // retranslating when passing back.
    connect(ui->language_combobox,
            static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this,
            &ConfigureGeneral::onLanguageChanged);

    for (auto theme : UISettings::themes) {
        ui->theme_combobox->addItem(theme.first, theme.second);
    }

    this->setConfiguration();

    ui->toggle_cpu_jit->setEnabled(!Core::System::GetInstance().IsPoweredOn());
    ui->updateBox->setVisible(UISettings::values.updater_found);
}

ConfigureGeneral::~ConfigureGeneral() {}

void ConfigureGeneral::setConfiguration() {
    ui->toggle_check_exit->setChecked(UISettings::values.confirm_before_closing);
    ui->toggle_cpu_jit->setChecked(Settings::values.use_cpu_jit);

    ui->toggle_update_check->setChecked(UISettings::values.check_for_update_on_start);
    ui->toggle_auto_update->setChecked(UISettings::values.update_on_close);

    // The first item is "auto-select" with actual value -1, so plus one here will do the trick
    ui->region_combobox->setCurrentIndex(Settings::values.region_value + 1);

    ui->theme_combobox->setCurrentIndex(ui->theme_combobox->findData(UISettings::values.theme));
    ui->language_combobox->setCurrentIndex(
        ui->language_combobox->findData(UISettings::values.language));
}

void ConfigureGeneral::applyConfiguration() {
    UISettings::values.confirm_before_closing = ui->toggle_check_exit->isChecked();
    UISettings::values.theme =
        ui->theme_combobox->itemData(ui->theme_combobox->currentIndex()).toString();

    UISettings::values.check_for_update_on_start = ui->toggle_update_check->isChecked();
    UISettings::values.update_on_close = ui->toggle_auto_update->isChecked();

    Settings::values.region_value = ui->region_combobox->currentIndex() - 1;
    Settings::values.use_cpu_jit = ui->toggle_cpu_jit->isChecked();
    Settings::Apply();
}

void ConfigureGeneral::onLanguageChanged(int index) {
    if (index == -1)
        return;

    emit languageChanged(ui->language_combobox->itemData(index).toString());
}

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