/*
    This file is part of Photoflare.

    Photoflare is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Photoflare is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Photoflare.  If not, see <https://www.gnu.org/licenses/>.
*/

// Preferences dialog class.

#include <QFileDialog>
#include <QStandardPaths>
#include <QDesktopServices>

#include "prefsdialog.h"
#include "ui_prefsdialog.h"
#include "../Settings.h"

PrefsDialog::PrefsDialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::PrefsDialog)
{
    ui->setupUi(this);
    setFixedSize(size());

    flagPath = ":/pixmaps/flags/assets/pixmaps/flags/";

    //Folders tab
    ui->openFolderLineEdit->setText(SETTINGS->getOpenFolder());
    ui->saveFolderLineEdit->setText(SETTINGS->getSaveFolder());
    ui->saveFormatEnabled->setChecked(SETTINGS->getSaveFormatEnabled());
    ui->previousOpenedEnabled->setChecked(SETTINGS->getPreviouslyOpened());
    ui->previousOpenedSaveEnabled->setChecked(SETTINGS->getPreviouslyOpenedSave());

    //Compression tab
    ui->compDialogEnabled->setChecked(SETTINGS->getCompressionDialogEnabled());
    ui->compEnabledDefault->setChecked(SETTINGS->getCompressionDefaultEnabled());
    ui->compressionValue->setText(SETTINGS->getCompressionDefaultValue());
    ui->compressionSlider->setValue(SETTINGS->getCompressionDefaultValue().toInt());

    //Layout tab
    QStringList toolList(QStringList() << tr("Right") << tr("Left"));
    ui->toolPaletteLocation->addItems(toolList);

    if(SETTINGS->getDockLayout() == "1")
    {
        ui->toolPaletteLocation->setCurrentIndex(1);
    }

    QStringList zoomList(QStringList() << tr("Default") << tr("Inverted"));
    ui->zoomDirection->addItems(zoomList);
    if(SETTINGS->getZoomDirection() == "1")
    {
        ui->zoomDirection->setCurrentIndex(1);
    }

    QStringList iconThemes(QStringList() << tr("Auto") << tr("Light") << tr("Dark"));
    ui->iconThemeCBox->addItems(iconThemes);
    {
        const QString t = SETTINGS->getIconTheme();
        if (t == "light")     ui->iconThemeCBox->setCurrentIndex(1);
        else if (t == "dark") ui->iconThemeCBox->setCurrentIndex(2);
        else                  ui->iconThemeCBox->setCurrentIndex(0);
    }

    //Default values tab
    ui->memorizeParams->setChecked(SETTINGS->getMemParamsEnabled());
    ui->unitsCBox->setCurrentIndex(SETTINGS->getUnit());

    //Saving tab
    QStringList filters;
    filters << tr("png (*.png)");
    filters << tr("jpg (*.jpg *.jpeg)");
    filters << tr("bmp (*.bmp)");
    filters << tr("pbm (*.pbm)");
    filters << tr("pgm (*.pgm)");
    filters << tr("ppm (*.ppm)");
    filters << tr("ico (*.ico)");

    ui->comboBoxSaveFormat->addItems(filters);
    ui->comboBoxSaveFormat->setCurrentIndex(SETTINGS->getSaveFormat().toInt());

    //History tab
    ui->history_value->setText(SETTINGS->getHistoryLimit());
    ui->historySlider->setValue(SETTINGS->getHistoryLimit().toInt());

    //Startup tab
    QStringList languages;
    languages << tr("English")
              << tr("French")
              << tr("Dutch")
              << tr("German")
              << tr("Chinese (CN)")
              << tr("Chinese (TW)")
              << tr("Czech Republic")
              << tr("Korean")
              << tr("Portuguese (PT)")
              << tr("Portuguese (BR)")
              << tr("Sweden")
              << tr("Russian")
              << tr("Indonesian")
              << tr("Spanish")
              << tr("Japanese")
              << tr("Turkish");

    ui->comboBoxLanguage->addItems(languages);
    addFlagIcons(languages.count());

    ui->checkBoxMaximize->setChecked(SETTINGS->isMaximizeWindow());
    ui->checkBox->setChecked(SETTINGS->isMultiWindowMode());

    if(SETTINGS->getUserLanguage() == "en")
        ui->comboBoxLanguage->setCurrentIndex(0);
    else if(SETTINGS->getUserLanguage() == "fr")
        ui->comboBoxLanguage->setCurrentIndex(1);
    else if(SETTINGS->getUserLanguage() == "nl")
        ui->comboBoxLanguage->setCurrentIndex(2);
    else if(SETTINGS->getUserLanguage() == "de")
        ui->comboBoxLanguage->setCurrentIndex(3);
    else if(SETTINGS->getUserLanguage() == "zh_CN")
        ui->comboBoxLanguage->setCurrentIndex(4);
    else if(SETTINGS->getUserLanguage() == "zh_TW")
        ui->comboBoxLanguage->setCurrentIndex(5);
    else if(SETTINGS->getUserLanguage() == "cs")
        ui->comboBoxLanguage->setCurrentIndex(6);
    else if(SETTINGS->getUserLanguage() == "ko")
        ui->comboBoxLanguage->setCurrentIndex(7);
    else if(SETTINGS->getUserLanguage() == "pt_PT")
        ui->comboBoxLanguage->setCurrentIndex(8);
    else if(SETTINGS->getUserLanguage() == "pt_BR")
        ui->comboBoxLanguage->setCurrentIndex(9);
    else if(SETTINGS->getUserLanguage() == "sv")
        ui->comboBoxLanguage->setCurrentIndex(10);
    else if(SETTINGS->getUserLanguage() == "ru_RU")
        ui->comboBoxLanguage->setCurrentIndex(11);
    else if(SETTINGS->getUserLanguage() == "id")
        ui->comboBoxLanguage->setCurrentIndex(12);
    else if(SETTINGS->getUserLanguage() == "es")
        ui->comboBoxLanguage->setCurrentIndex(13);
    else if(SETTINGS->getUserLanguage() == "ja")
        ui->comboBoxLanguage->setCurrentIndex(14);
    else if(SETTINGS->getUserLanguage() == "tr")
        ui->comboBoxLanguage->setCurrentIndex(15);

}

PrefsDialog::~PrefsDialog()
{
    delete ui;
}

void PrefsDialog::on_buttonBox_accepted()
{
    //Folders tab
    SETTINGS->setOpenFolder(ui->openFolderLineEdit->text());
    SETTINGS->setSaveFolder(ui->saveFolderLineEdit->text());
    SETTINGS->setSaveFormatEnabled(ui->saveFormatEnabled->isChecked());
    SETTINGS->setPreviouslyOpened(ui->previousOpenedEnabled->isChecked());
    SETTINGS->setPreviouslyOpenedSave(ui->previousOpenedSaveEnabled->isChecked());

    //Layout tab
    SETTINGS->setDockLayout(QString::number(ui->toolPaletteLocation->currentIndex()));
    emit dockLayoutChanged();
    SETTINGS->setZoomDirection(QString::number(ui->zoomDirection->currentIndex()));
    {
        static const char* themeKeys[] = {"auto", "light", "dark"};
        SETTINGS->setIconTheme(QLatin1String(themeKeys[ui->iconThemeCBox->currentIndex()]));
        emit iconThemeChanged();
    }

    //Default values tab
    SETTINGS->setMemParamsEnabled(ui->memorizeParams->isChecked());
    SETTINGS->setUnit(ui->unitsCBox->currentIndex());

    //Saving tab
    SETTINGS->setSaveFormat(QString::number(ui->comboBoxSaveFormat->currentIndex()));

    //History tab
    SETTINGS->setHistoryLimit(ui->history_value->text());

    //Compression tab
    SETTINGS->setCompressionDialogEnabled(ui->compDialogEnabled->isChecked());
    SETTINGS->setCompressionDefaultEnabled(ui->compEnabledDefault->isChecked());
    SETTINGS->setCompressionDefaultValue(ui->compressionValue->text());

    //Startup tab
    if (ui->checkBoxMaximize->isChecked() != SETTINGS->isMaximizeWindow())
        SETTINGS->setMaximizeWindow(ui->checkBoxMaximize->isChecked());

    if (ui->checkBox->isChecked() != SETTINGS->isMultiWindowMode())
        SETTINGS->setMultiWindowMode(ui->checkBox->isChecked());

    // Save language when we close the dialog; switch live if it changed
    const QString oldLang = SETTINGS->getUserLanguage();
    set_user_language();
    if (SETTINGS->getUserLanguage() != oldLang)
        emit languageChanged(SETTINGS->getUserLanguage());
}

void PrefsDialog::on_buttonBox_rejected()
{
    close();
}

void PrefsDialog::on_openFolderButton_clicked()
{
    QString dir = QFileDialog::getExistingDirectory(this, tr("Open Directory"),
                                                 "/home",
                                                 QFileDialog::ShowDirsOnly
                                                 | QFileDialog::DontResolveSymlinks);
    ui->openFolderLineEdit->setText(dir);
}

void PrefsDialog::on_saveFolderButton_clicked()
{
    QString dir = QFileDialog::getExistingDirectory(this, tr("Save Directory"),
                                                 "/home",
                                                 QFileDialog::ShowDirsOnly
                                                 | QFileDialog::DontResolveSymlinks);
    ui->saveFolderLineEdit->setText(dir);
}

void PrefsDialog::on_compressionSlider_sliderMoved(int position)
{
    QString val = QString::number(position);
    ui->compressionValue->setText(val);
}

void PrefsDialog::on_compressionSlider_valueChanged(int value)
{
    QString val = QString::number(value);
    ui->compressionValue->setText(val);
}

void PrefsDialog::on_historySlider_sliderMoved(int position)
{
    QString val = QString::number(position);
    ui->history_value->setText(val);
}

void PrefsDialog::on_historySlider_valueChanged(int value)
{
    QString val = QString::number(value);
    ui->history_value->setText(val);
}

void PrefsDialog::set_user_language()
{
    if(ui->comboBoxLanguage->currentIndex() == 0)
        SETTINGS->setUserLanguage("en");
    else if(ui->comboBoxLanguage->currentIndex() == 1)
        SETTINGS->setUserLanguage("fr");
    else if(ui->comboBoxLanguage->currentIndex() == 2)
        SETTINGS->setUserLanguage("nl");
    else if(ui->comboBoxLanguage->currentIndex() == 3)
        SETTINGS->setUserLanguage("de");
    else if(ui->comboBoxLanguage->currentIndex() == 4)
        SETTINGS->setUserLanguage("zh_CN");
    else if(ui->comboBoxLanguage->currentIndex() == 5)
        SETTINGS->setUserLanguage("zh_TW");
    else if(ui->comboBoxLanguage->currentIndex() == 6)
        SETTINGS->setUserLanguage("cs");
    else if(ui->comboBoxLanguage->currentIndex() == 7)
        SETTINGS->setUserLanguage("ko");
    else if(ui->comboBoxLanguage->currentIndex() == 8)
        SETTINGS->setUserLanguage("pt_PT");
    else if(ui->comboBoxLanguage->currentIndex() == 9)
        SETTINGS->setUserLanguage("pt_BR");
    else if(ui->comboBoxLanguage->currentIndex() == 10)
        SETTINGS->setUserLanguage("sv");
    else if(ui->comboBoxLanguage->currentIndex() == 11)
        SETTINGS->setUserLanguage("ru_RU");
    else if(ui->comboBoxLanguage->currentIndex() == 12)
        SETTINGS->setUserLanguage("id");
    else if(ui->comboBoxLanguage->currentIndex() == 13)
        SETTINGS->setUserLanguage("es");
    else if(ui->comboBoxLanguage->currentIndex() == 14)
        SETTINGS->setUserLanguage("ja");
    else if(ui->comboBoxLanguage->currentIndex() == 15)
        SETTINGS->setUserLanguage("tr");
}

void PrefsDialog::addFlagIcons(int languages)
{
    QStringList files;
    files << "United-kingdom"
          << "France"
          << "Netherlands"
          << "Germany"
          << "China"
          << "Taiwan"
          << "Czech-Republic"
          << "South-Korea"
          << "Portugal"
          << "Brazil"
          << "Sweden"
          << "Russia"
          << "Indonesia"
          << "Spain"
          << "Japan"
          << "Turkey";

    for (int i = 0; i < languages; ++i) {
        ui->comboBoxLanguage->setItemIcon(i,QIcon(flagPath+files[i]+".png"));
    }
}
