#include "widgets/splits/SplitHeader.hpp"

#include "Application.hpp"
#include "common/UrlFetch.hpp"
#include "providers/twitch/TwitchChannel.hpp"
#include "providers/twitch/TwitchServer.hpp"
#include "singletons/Resources.hpp"
#include "singletons/Theme.hpp"
#include "util/LayoutCreator.hpp"
#include "widgets/Label.hpp"
#include "widgets/TooltipWidget.hpp"
#include "widgets/splits/Split.hpp"
#include "widgets/splits/SplitContainer.hpp"

#include <QByteArray>
#include <QDrag>
#include <QInputDialog>
#include <QMimeData>
#include <QPainter>

#ifdef USEWEBENGINE
#include "widgets/StreamView.hpp"
#endif

namespace chatterino {

SplitHeader::SplitHeader(Split *_split)
    : BaseWidget(_split)
    , split(_split)
{
    this->split->focused.connect([this]() { this->themeChangedEvent(); });
    this->split->focusLost.connect([this]() { this->themeChangedEvent(); });

    auto app = getApp();

    LayoutCreator<SplitHeader> layoutCreator(this);
    auto layout = layoutCreator.emplace<QHBoxLayout>().withoutMargin();
    layout->setSpacing(0);
    {
        // channel name label
        auto title = layout.emplace<Label>().assign(&this->titleLabel);
        title->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Preferred);
        title->setCentered(true);
        title->setHasOffset(false);

        // mode button
        auto mode = layout.emplace<RippleEffectLabel>(nullptr).assign(&this->modeButton);

        mode->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
        mode->hide();

        this->setupModeLabel(*mode);

        QObject::connect(mode.getElement(), &RippleEffectLabel::clicked, this, [this] {
            QTimer::singleShot(80, this, [&, this] {
                ChannelPtr _channel = this->split->getChannel();
                if (_channel->hasModRights()) {
                    this->modeMenu.move(
                        this->modeButton->mapToGlobal(QPoint(0, this->modeButton->height())));
                    this->modeMenu.show();
                }
            });
        });

        // moderation mode
        auto moderator = layout.emplace<RippleEffectButton>(this).assign(&this->moderationButton);

        QObject::connect(moderator.getElement(), &RippleEffectButton::clicked, this,
                         [this, moderator]() mutable {
                             this->split->setModerationMode(!this->split->getModerationMode());

                             moderator->setDim(!this->split->getModerationMode());
                         });

        this->updateModerationModeIcon();

        // dropdown label
        auto dropdown = layout.emplace<RippleEffectButton>(this).assign(&this->dropdownButton);
        dropdown->setMouseTracking(true);
        //        dropdown->setPixmap(*app->resources->splitHeaderContext->getPixmap());
        //        dropdown->setScaleIndependantSize(23, 23);
        this->addDropdownItems(dropdown.getElement());
        QObject::connect(dropdown.getElement(), &RippleEffectButton::leftMousePress, this, [this] {
            QTimer::singleShot(80, [&, this] {
                this->dropdownMenu.move(
                    this->dropdownButton->mapToGlobal(QPoint(0, this->dropdownButton->height())));
                this->dropdownMenu.show();
            });
        });
    }

    // ---- misc
    this->layout()->setMargin(0);
    this->scaleChangedEvent(this->getScale());

    this->updateChannelText();

    this->initializeChannelSignals();

    this->split->channelChanged.connect([this]() {
        this->initializeChannelSignals();  //
    });

    this->managedConnect(app->accounts->twitch.currentUserChanged,
                         [this] { this->updateModerationModeIcon(); });

    this->addModeActions(this->modeMenu);

    this->setMouseTracking(true);
}

SplitHeader::~SplitHeader()
{
    this->onlineStatusChangedConnection.disconnect();
}

void SplitHeader::addDropdownItems(RippleEffectButton *)
{
    // clang-format off
    this->dropdownMenu.addAction("New split", this->split, &Split::doAddSplit, QKeySequence(tr("Ctrl+T")));
    this->dropdownMenu.addAction("Close split", this->split, &Split::doCloseSplit, QKeySequence(tr("Ctrl+W")));
    this->dropdownMenu.addAction("Change channel", this->split, &Split::doChangeChannel, QKeySequence(tr("Ctrl+R")));
    this->dropdownMenu.addSeparator();
    this->dropdownMenu.addAction("Viewer list", this->split, &Split::doOpenViewerList);
    this->dropdownMenu.addAction("Search", this->split, &Split::doSearch, QKeySequence(tr("Ctrl+F")));
    this->dropdownMenu.addSeparator();
    this->dropdownMenu.addAction("Popup", this->split, &Split::doPopup);
#ifdef USEWEBENGINE
    this->dropdownMenu.addAction("Start watching", this, [this]{
        ChannelPtr _channel = this->split->getChannel();
        TwitchChannel *tc = dynamic_cast<TwitchChannel *>(_channel.get());

        if (tc != nullptr) {
            StreamView *view = new StreamView(_channel, "https://player.twitch.tv/?channel=" + tc->name);
            view->setAttribute(Qt::WA_DeleteOnClose, true);
            view->show();
        }
    });
#endif
    this->dropdownMenu.addAction("Open browser", this->split, &Split::doOpenChannel);
#ifndef USEWEBENGINE
    this->dropdownMenu.addAction("Open browser popup", this->split, &Split::doOpenPopupPlayer);
#endif
    this->dropdownMenu.addAction("Open streamlink", this->split, &Split::doOpenStreamlink);
    this->dropdownMenu.addSeparator();
    this->dropdownMenu.addAction("Reload channel emotes", this, SLOT(menuReloadChannelEmotes()));
    this->dropdownMenu.addAction("Reconnect", this, SLOT(menuManualReconnect()));
    this->dropdownMenu.addAction("Clear messages", this->split, &Split::doClearChat);
//    this->dropdownMenu.addSeparator();
//    this->dropdownMenu.addAction("Show changelog", this, SLOT(menuShowChangelog()));
    // clang-format on
}

void SplitHeader::updateRoomModes()
{
    this->modeUpdateRequested_.invoke();
}

void SplitHeader::setupModeLabel(RippleEffectLabel &label)
{
    this->managedConnections.push_back(this->modeUpdateRequested_.connect([this, &label] {
        auto twitchChannel = dynamic_cast<TwitchChannel *>(this->split->getChannel().get());

        // return if the channel is not a twitch channel
        if (twitchChannel == nullptr) {
            label.hide();
            return;
        }

        // set lable enabled
        label.setEnable(twitchChannel->hasModRights());

        // set the label text
        auto roomModes = twitchChannel->getRoomModes();
        QString text;

        if (roomModes.r9k)
            text += "r9k, ";
        if (roomModes.slowMode)
            text += QString("slow(%1), ").arg(QString::number(roomModes.slowMode));
        if (roomModes.emoteOnly)
            text += "emote, ";
        if (roomModes.submode)
            text += "sub, ";

        if (text.length() > 2) {
            text = text.mid(0, text.size() - 2);
        }

        if (text.isEmpty()) {
            if (twitchChannel->hasModRights()) {
                label.getLabel().setText("none");
                label.show();
            } else {
                label.hide();
            }
        } else {
            static QRegularExpression commaReplacement("^.+?, .+?,( ).+$");
            QRegularExpressionMatch match = commaReplacement.match(text);
            if (match.hasMatch()) {
                text = text.mid(0, match.capturedStart(1)) + '\n' + text.mid(match.capturedEnd(1));
            }

            label.getLabel().setText(text);
            label.show();
        }
    }));
}

void SplitHeader::addModeActions(QMenu &menu)
{
    auto setSub = new QAction("Subscriber only", this);
    auto setEmote = new QAction("Emote only", this);
    auto setSlow = new QAction("Slow", this);
    auto setR9k = new QAction("R9K", this);

    setSub->setCheckable(true);
    setEmote->setCheckable(true);
    setSlow->setCheckable(true);
    setR9k->setCheckable(true);

    menu.addAction(setEmote);
    menu.addAction(setSub);
    menu.addAction(setSlow);
    menu.addAction(setR9k);

    this->managedConnections.push_back(this->modeUpdateRequested_.connect(  //
        [this, setSub, setEmote, setSlow, setR9k]() {
            auto twitchChannel = dynamic_cast<TwitchChannel *>(this->split->getChannel().get());
            if (twitchChannel == nullptr) {
                this->modeButton->hide();
                return;
            }

            auto roomModes = twitchChannel->getRoomModes();

            setR9k->setChecked(roomModes.r9k);
            setSlow->setChecked(roomModes.slowMode);
            setEmote->setChecked(roomModes.emoteOnly);
            setSub->setChecked(roomModes.submode);
        }));

    auto toggle = [this](const QString &_command, QAction *action) mutable {
        QString command = _command;

        if (!action->isChecked()) {
            command += "off";
        };
        action->setChecked(!action->isChecked());

        qDebug() << command;
        this->split->getChannel().get()->sendMessage(command);
    };

    QObject::connect(setSub, &QAction::triggered, this,
                     [setSub, toggle]() mutable { toggle("/subscribers", setSub); });

    QObject::connect(setEmote, &QAction::triggered, this,
                     [setEmote, toggle]() mutable { toggle("/emoteonly", setEmote); });

    QObject::connect(setSlow, &QAction::triggered, this, [setSlow, this]() {
        if (!setSlow->isChecked()) {
            this->split->getChannel().get()->sendMessage("/slowoff");
            setSlow->setChecked(false);
            return;
        };
        bool ok;
        int slowSec =
            QInputDialog::getInt(this, "", "Seconds:", 10, 0, 500, 1, &ok, Qt::FramelessWindowHint);
        if (ok) {
            this->split->getChannel().get()->sendMessage(QString("/slow %1").arg(slowSec));
        } else {
            setSlow->setChecked(false);
        }
    });

    QObject::connect(setR9k, &QAction::triggered, this,
                     [setR9k, toggle]() mutable { toggle("/r9kbeta", setR9k); });
}

void SplitHeader::initializeChannelSignals()
{
    // Disconnect any previous signal first
    this->onlineStatusChangedConnection.disconnect();

    auto channel = this->split->getChannel();
    TwitchChannel *twitchChannel = dynamic_cast<TwitchChannel *>(channel.get());

    if (twitchChannel) {
        this->managedConnections.emplace_back(twitchChannel->updateLiveInfo.connect([this]() {
            this->updateChannelText();  //
        }));
    }
}

void SplitHeader::scaleChangedEvent(float scale)
{
    int w = int(28 * scale);

    this->setFixedHeight(w);
    this->dropdownButton->setFixedWidth(w);
    this->moderationButton->setFixedWidth(w);
    //    this->titleLabel->setFont(
    //        FontManager::getInstance().getFont(FontStyle::Medium, scale));
}

void SplitHeader::updateChannelText()
{
    auto indirectChannel = this->split->getIndirectChannel();
    auto channel = this->split->getChannel();

    QString title = channel->name;

    if (indirectChannel.getType() == Channel::Type::TwitchWatching) {
        title = "watching: " + (title.isEmpty() ? "none" : title);
    }

    TwitchChannel *twitchChannel = dynamic_cast<TwitchChannel *>(channel.get());

    if (twitchChannel != nullptr) {
        const auto streamStatus = twitchChannel->getStreamStatus();

        if (streamStatus.live) {
            this->isLive = true;
            this->tooltip = "<style>.center    { text-align: center; }</style>"
                            "<p class = \"center\">" +
                            streamStatus.title + "<br><br>" + streamStatus.game + "<br>" +
                            (streamStatus.rerun ? "Vod-casting" : "Live") + " for " +
                            streamStatus.uptime + " with " +
                            QString::number(streamStatus.viewerCount) +
                            " viewers"
                            "</p>";
            if (streamStatus.rerun) {
                title += " (rerun)";
            } else if (streamStatus.streamType.isEmpty()) {
                title += " (" + streamStatus.streamType + ")";
            } else {
                title += " (live)";
            }
        } else {
            this->tooltip = QString();
        }
    }

    if (title.isEmpty()) {
        title = "<empty>";
    }

    this->isLive = false;
    this->titleLabel->setText(title);
}

void SplitHeader::updateModerationModeIcon()
{
    auto app = getApp();

    this->moderationButton->setPixmap(this->split->getModerationMode()
                                          ? *app->resources->moderationmode_enabled->getPixmap()
                                          : *app->resources->moderationmode_disabled->getPixmap());

    bool modButtonVisible = false;
    ChannelPtr channel = this->split->getChannel();

    TwitchChannel *tc = dynamic_cast<TwitchChannel *>(channel.get());

    if (tc != nullptr && tc->hasModRights()) {
        modButtonVisible = true;
    }

    this->moderationButton->setVisible(modButtonVisible);
}

void SplitHeader::paintEvent(QPaintEvent *)
{
    QPainter painter(this);

    painter.fillRect(rect(), this->theme->splits.header.background);
    painter.setPen(this->theme->splits.header.border);
    painter.drawRect(0, 0, width() - 1, height() - 1);
}

void SplitHeader::mousePressEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton) {
        this->dragging = true;

        this->dragStart = event->pos();
    }

    this->doubleClicked = false;
}

void SplitHeader::mouseReleaseEvent(QMouseEvent *event)
{
    if (this->dragging && event->button() == Qt::LeftButton) {
        QPoint pos = event->globalPos();

        if (!showingHelpTooltip) {
            this->showingHelpTooltip = true;

            QTimer::singleShot(400, this, [this, pos] {
                if (this->doubleClicked) {
                    this->doubleClicked = false;
                    this->showingHelpTooltip = false;
                    return;
                }

                TooltipWidget *widget = new TooltipWidget();

                widget->setText("Double click or press <Ctrl+R> to change the channel.\nClick and "
                                "drag to move the split.");
                widget->setAttribute(Qt::WA_DeleteOnClose);
                widget->move(pos);
                widget->show();
                widget->raise();

                QTimer::singleShot(3000, widget, [this, widget] {
                    widget->close();
                    this->showingHelpTooltip = false;
                });
            });
        }
    }

    this->dragging = false;
}

void SplitHeader::mouseMoveEvent(QMouseEvent *event)
{
    if (this->dragging) {
        if (std::abs(this->dragStart.x() - event->pos().x()) > int(12 * this->getScale()) ||
            std::abs(this->dragStart.y() - event->pos().y()) > int(12 * this->getScale())) {
            this->split->drag();
            this->dragging = false;
        }
    }
}

void SplitHeader::mouseDoubleClickEvent(QMouseEvent *event)
{
    if (event->button() == Qt::LeftButton) {
        this->split->doChangeChannel();
    }
    this->doubleClicked = true;
}

void SplitHeader::enterEvent(QEvent *event)
{
    if (!this->tooltip.isEmpty()) {
        auto tooltipWidget = TooltipWidget::getInstance();
        tooltipWidget->moveTo(this, this->mapToGlobal(this->rect().bottomLeft()), false);
        tooltipWidget->setText(this->tooltip);
        tooltipWidget->show();
        tooltipWidget->raise();
    }

    BaseWidget::enterEvent(event);
}

void SplitHeader::leaveEvent(QEvent *event)
{
    TooltipWidget::getInstance()->hide();

    BaseWidget::leaveEvent(event);
}

void SplitHeader::rightButtonClicked()
{
}

void SplitHeader::themeChangedEvent()
{
    QPalette palette;

    if (this->split->hasFocus()) {
        palette.setColor(QPalette::Foreground, this->theme->splits.header.focusedText);
    } else {
        palette.setColor(QPalette::Foreground, this->theme->splits.header.text);
    }

    if (this->theme->isLightTheme()) {
        this->dropdownButton->setPixmap(QPixmap(":/images/menu_black.png"));
    } else {
        this->dropdownButton->setPixmap(QPixmap(":/images/menu_white.png"));
    }

    this->titleLabel->setPalette(palette);
}

void SplitHeader::menuMoveSplit()
{
}

void SplitHeader::menuReloadChannelEmotes()
{
    auto channel = this->split->getChannel();
    TwitchChannel *twitchChannel = dynamic_cast<TwitchChannel *>(channel.get());

    if (twitchChannel) {
        twitchChannel->reloadChannelEmotes();
    }
}

void SplitHeader::menuManualReconnect()
{
    auto app = getApp();

    // fourtf: connection
    app->twitch.server->connect();
}

void SplitHeader::menuShowChangelog()
{
}

}  // namespace chatterino