#include "widgets/settingsdialog.hpp"
#include "accountmanager.hpp"
#include "twitch/twitchmessagebuilder.hpp"
#include "twitch/twitchuser.hpp"
#include "widgets/settingsdialogtab.hpp"
#include "windowmanager.hpp"

#include <QComboBox>
#include <QDebug>
#include <QFile>
#include <QFontDialog>
#include <QFormLayout>
#include <QGroupBox>
#include <QLabel>
#include <QListWidget>
#include <QPalette>
#include <QResource>

namespace chatterino {
namespace widgets {

SettingsDialog::SettingsDialog()
    : snapshot(SettingsManager::getInstance().createSnapshot())
    , usernameDisplayMode(
          "/appearance/messages/usernameDisplayMode",
          twitch::TwitchMessageBuilder::UsernameDisplayMode::UsernameAndLocalizedName)
{
    QFile file(":/qss/settings.qss");
    file.open(QFile::ReadOnly);
    QString styleSheet = QLatin1String(file.readAll());
    this->setStyleSheet(styleSheet);

    QPalette palette;
    palette.setColor(QPalette::Background, QColor("#444"));
    this->setPalette(palette);

    this->ui.pageStack.setObjectName("pages");

    this->setLayout(&this->ui.vbox);

    this->ui.vbox.addLayout(&this->ui.hbox);

    this->ui.vbox.addWidget(&this->ui.buttonBox);

    auto tabWidget = new QWidget();
    tabWidget->setObjectName("tabWidget");

    tabWidget->setLayout(&this->ui.tabs);
    tabWidget->setFixedWidth(200);

    this->ui.hbox.addWidget(tabWidget);
    this->ui.hbox.addLayout(&this->ui.pageStack);

    this->ui.buttonBox.addButton(&this->ui.okButton, QDialogButtonBox::ButtonRole::AcceptRole);
    this->ui.buttonBox.addButton(&this->ui.cancelButton, QDialogButtonBox::ButtonRole::RejectRole);

    QObject::connect(&this->ui.okButton, &QPushButton::clicked, this,
                     &SettingsDialog::okButtonClicked);
    QObject::connect(&this->ui.cancelButton, &QPushButton::clicked, this,
                     &SettingsDialog::cancelButtonClicked);

    this->ui.okButton.setText("OK");
    this->ui.cancelButton.setText("Cancel");

    this->resize(600, 500);

    this->addTabs();
}

void SettingsDialog::addTabs()
{
    SettingsManager &settings = SettingsManager::getInstance();

    QVBoxLayout *vbox;

    // Accounts
    vbox = new QVBoxLayout();

    {
        // add remove buttons
        auto buttonBox = new QDialogButtonBox(this);

        auto addButton = new QPushButton("add", this);
        auto removeButton = new QPushButton("remove", this);

        buttonBox->addButton(addButton, QDialogButtonBox::YesRole);
        buttonBox->addButton(removeButton, QDialogButtonBox::NoRole);

        vbox->addWidget(buttonBox);

        // listview
        auto listWidget = new QListWidget(this);

        listWidget->addItem("xD");
        listWidget->addItem("vi von");
        listWidget->addItem("monkaS");

        for (auto &user : AccountManager::getInstance().getTwitchUsers()) {
            listWidget->addItem(user.getUserName());
        }

        vbox->addWidget(listWidget);
    }

    //    vbox->addStretch(1);
    addTab(vbox, "Accounts", ":/images/Message_16xLG.png");

    // Appearance
    vbox = new QVBoxLayout();

    {
        auto group = new QGroupBox("Application");

        auto form = new QFormLayout();
        auto combo = new QComboBox();

        auto fontLayout = new QHBoxLayout();
        auto fontFamilyLabel = new QLabel("Current font family");
        auto fontSizeLabel = new QLabel("Current font size");
        auto fontButton = new QPushButton("Select");

        fontLayout->addWidget(fontButton);
        fontLayout->addWidget(fontFamilyLabel);
        fontLayout->addWidget(fontSizeLabel);

        {
            auto fontManager = FontManager::getInstance();

            fontManager.currentFontFamily.getValueChangedSignal().connect(
                [fontFamilyLabel](const std::string &newValue) {
                    fontFamilyLabel->setText(QString::fromStdString(newValue));  //
                });

            fontManager.currentFontSize.getValueChangedSignal().connect(
                [fontSizeLabel](const int &newValue) {
                    fontSizeLabel->setText(QString(QString::number(newValue)));  //
                });
        }

        fontButton->connect(fontButton, &QPushButton::clicked, []() {
            auto fontManager = FontManager::getInstance();
            QFontDialog dialog(fontManager.getFont(FontManager::Medium));

            dialog.connect(&dialog, &QFontDialog::fontSelected, [&dialog](const QFont &font) {
                auto fontManager = FontManager::getInstance();
                fontManager.currentFontFamily = font.family().toStdString();
                fontManager.currentFontSize = font.pointSize();
            });

            dialog.show();
            dialog.exec();
        });

        auto compactTabs = createCheckbox("Hide tab X", settings.hideTabX);
        auto hidePreferencesButton = createCheckbox("Hide preferences button (ctrl+p to show)",
                                                    settings.hidePreferencesButton);
        auto hideUserButton = createCheckbox("Hide user button", settings.hideUserButton);

        form->addRow("Theme:", combo);

        {
            auto hbox = new QHBoxLayout();

            auto slider = new QSlider(Qt::Horizontal);
            // Theme hue
            slider->setMinimum(0);
            slider->setMaximum(1000);

            pajlada::Settings::Setting<double> themeHue("/appearance/theme/hue");

            slider->setValue(std::min(std::max(themeHue.getValue(), 0.0), 1.0) * 1000);

            hbox->addWidget(slider);

            auto button = new QPushButton();
            button->setFlat(true);

            hbox->addWidget(button);

            form->addRow("Theme color:", hbox);

            QObject::connect(slider, &QSlider::valueChanged, this, [button](int value) mutable {
                double newValue = value / 1000.0;
                pajlada::Settings::Setting<double> themeHue("/appearance/theme/hue");

                themeHue.setValue(newValue);

                QPalette pal = button->palette();
                QColor color;
                color.setHsvF(newValue, 1.0, 1.0, 1.0);
                pal.setColor(QPalette::Button, color);
                button->setAutoFillBackground(true);
                button->setPalette(pal);
                button->update();

                // TODO(pajlada): re-implement
                // this->windowManager.updateAll();
            });
        }

        form->addRow("Font:", fontLayout);
        form->addRow("Tab bar:", compactTabs);
        form->addRow("", hidePreferencesButton);
        form->addRow("", hideUserButton);

        {
            // Theme name
            combo->addItems({
                "White",  //
                "Light",  //
                "Dark",   //
                "Black",  //
            });
            // combo->addItem("White");
            // combo->addItem("Light");
            // combo->addItem("Dark");
            // combo->addItem("Black");

            QString currentComboText = QString::fromStdString(
                pajlada::Settings::Setting<std::string>::get("/appearance/theme/name"));

            combo->setCurrentText(currentComboText);

            QObject::connect(combo, &QComboBox::currentTextChanged, this, [](const QString &value) {
                pajlada::Settings::Setting<std::string>::set("/appearance/theme/name",
                                                             value.toStdString());
            });
        }

        group->setLayout(form);

        vbox->addWidget(group);
    }

    {
        auto group = new QGroupBox("Messages");

        auto v = new QVBoxLayout();
        v->addWidget(createCheckbox("Show timestamp", settings.showTimestamps));
        v->addWidget(createCheckbox("Show seconds in timestamp", settings.showTimestampSeconds));
        v->addWidget(createCheckbox("Show badges", settings.showBadges));
        v->addWidget(createCheckbox("Allow sending duplicate messages (add a space at the end)",
                                    settings.allowDouplicateMessages));
        v->addWidget(createCheckbox("Seperate messages", settings.seperateMessages));
        v->addWidget(createCheckbox("Show message length", settings.showMessageLength));
        v->addLayout(this->createCombobox(
            "Username display mode", this->usernameDisplayMode,
            {"Username (Localized name)", "Username", "Localized name"},
            [](const QString &newValue, pajlada::Settings::Setting<int> &setting) {
                if (newValue == "Username (Localized name)") {
                    setting =
                        twitch::TwitchMessageBuilder::UsernameDisplayMode::UsernameAndLocalizedName;
                } else if (newValue == "Username") {
                    setting = twitch::TwitchMessageBuilder::UsernameDisplayMode::Username;
                } else if (newValue == "Localized name") {
                    setting = twitch::TwitchMessageBuilder::UsernameDisplayMode::LocalizedName;
                }
            }));

        group->setLayout(v);

        vbox->addWidget(group);
    }

    vbox->addStretch(1);

    addTab(vbox, "Appearance", ":/images/AppearanceEditorPart_16x.png");

    // Behaviour
    vbox = new QVBoxLayout();

    {
        auto form = new QFormLayout();

        form->addRow("Window:", createCheckbox("Window always on top", settings.windowTopMost));
        form->addRow("Messages:", createCheckbox("Mention users with a @ (except in commands)",
                                                 settings.mentionUsersWithAt));
        form->addRow("", createCheckbox("Hide input box if empty", settings.hideEmptyInput));
        form->addRow("", createCheckbox("Show last read message indicator",
                                        settings.showLastMessageIndicator));

        //        auto v = new QVBoxLayout();
        //        v->addWidget(new QLabel("Mouse scroll speed"));

        auto scroll = new QSlider(Qt::Horizontal);
        form->addRow("Mouse scroll speed:", scroll);

        //        v->addWidget(scroll);
        //        v->addStretch(1);
        //        vbox->addLayout(v);
        vbox->addLayout(form);
    }

    vbox->addStretch(1);

    addTab(vbox, "Behaviour", ":/images/AppearanceEditorPart_16x.png");

    // Commands
    vbox = new QVBoxLayout();

    vbox->addWidget(new QLabel());

    vbox->addStretch(1);

    addTab(vbox, "Commands", ":/images/CustomActionEditor_16x.png");

    // Emotes
    vbox = new QVBoxLayout();

    vbox->addWidget(createCheckbox("Enable Twitch Emotes", settings.enableTwitchEmotes));
    vbox->addWidget(createCheckbox("Enable BetterTTV Emotes", settings.enableBttvEmotes));
    vbox->addWidget(createCheckbox("Enable FrankerFaceZ Emotes", settings.enableFfzEmotes));
    vbox->addWidget(createCheckbox("Enable Gif Emotes", settings.enableGifs));
    vbox->addWidget(createCheckbox("Enable Emojis", settings.enableEmojis));

    vbox->addWidget(createCheckbox("Enable Twitch Emotes", settings.enableTwitchEmotes));

    vbox->addStretch(1);
    addTab(vbox, "Emotes", ":/images/Emoji_Color_1F60A_19.png");

    // Ignored Users
    vbox = new QVBoxLayout();
    vbox->addStretch(1);
    addTab(vbox, "Ignored Users", ":/images/StatusAnnotations_Blocked_16xLG_color.png");

    // Ignored Messages
    vbox = new QVBoxLayout();
    vbox->addStretch(1);
    addTab(vbox, "Ignored Messages", ":/images/Filter_16x.png");

    // Links
    vbox = new QVBoxLayout();
    vbox->addStretch(1);
    addTab(vbox, "Links", ":/images/VSO_Link_blue_16x.png");

    // Logging
    vbox = new QVBoxLayout();
    vbox->addStretch(1);
    addTab(vbox, "Logs", ":/images/VSO_Link_blue_16x.png");

    // Highlighting
    vbox = new QVBoxLayout();
    vbox->addStretch(1);
    addTab(vbox, "Highlighting", ":/images/format_Bold_16xLG.png");

    // Whispers
    vbox = new QVBoxLayout();
    vbox->addStretch(1);
    addTab(vbox, "Whispers", ":/images/Message_16xLG.png");

    // Add stretch
    this->ui.tabs.addStretch(1);
}

void SettingsDialog::addTab(QLayout *layout, QString title, QString imageRes)
{
    auto widget = new QWidget();

    widget->setLayout(layout);

    auto tab = new SettingsDialogTab(this, title, imageRes);

    tab->setWidget(widget);

    this->ui.tabs.addWidget(tab, 0, Qt::AlignTop);

    this->ui.pageStack.addWidget(widget);

    if (this->ui.tabs.count() == 1) {
        this->select(tab);
    }
}

void SettingsDialog::select(SettingsDialogTab *tab)
{
    this->ui.pageStack.setCurrentWidget(tab->getWidget());

    if (this->selectedTab != nullptr) {
        this->selectedTab->setSelected(false);
        this->selectedTab->setStyleSheet("color: #FFF");
    }

    tab->setSelected(true);
    tab->setStyleSheet("background: #555; color: #FFF");
    this->selectedTab = tab;
}

void SettingsDialog::showDialog()
{
    static SettingsDialog *instance = new SettingsDialog();

    instance->show();
    instance->activateWindow();
    instance->raise();
    instance->setFocus();
}

/// Widget creation helpers
QCheckBox *SettingsDialog::createCheckbox(const QString &title, Setting<bool> &setting)
{
    auto checkbox = new QCheckBox(title);

    // Set checkbox initial state
    checkbox->setChecked(setting.get());

    QObject::connect(checkbox, &QCheckBox::toggled, this, [&setting](bool state) {
        setting.set(state);  //
    });

    return checkbox;
}

QCheckBox *SettingsDialog::createCheckbox(const QString &title,
                                          pajlada::Settings::Setting<bool> &setting)
{
    auto checkbox = new QCheckBox(title);

    // Set checkbox initial state
    checkbox->setChecked(setting.getValue());

    QObject::connect(checkbox, &QCheckBox::toggled, this, [&setting](bool state) {
        qDebug() << "update checkbox value";
        setting = state;  //
    });

    return checkbox;
}

QHBoxLayout *SettingsDialog::createCombobox(
    const QString &title, pajlada::Settings::Setting<int> &setting, QStringList items,
    std::function<void(QString, pajlada::Settings::Setting<int> &)> cb)
{
    auto box = new QHBoxLayout();
    auto label = new QLabel(title);
    auto widget = new QComboBox();
    widget->addItems(items);

    QObject::connect(widget, &QComboBox::currentTextChanged, this,
                     [&setting, cb](const QString &newValue) {
                         cb(newValue, setting);  //
                     });

    box->addWidget(label);
    box->addWidget(widget);

    return box;
}

void SettingsDialog::okButtonClicked()
{
    this->close();
}

void SettingsDialog::cancelButtonClicked()
{
    // TODO: Re-implement the snapshot feature properly
    this->snapshot.apply();

    this->close();
}

}  // namespace widgets
}  // namespace chatterino