#include <QApplication>
#include <QAction>
#include <QMenu>
#include <QPainter>
#include <QStyleHints>
#include <QSystemTrayIcon>
#include "autostart_manager.h"
#include "clock_widget.h"

namespace
{
// Standard macOS menu bar icon extent (points). Matches surrounding icons.
constexpr int trayIconExtent = 16;

QIcon createTrayIcon(const QColor &color)
{
    QPixmap pixmap(trayIconExtent, trayIconExtent);
    pixmap.setDevicePixelRatio(qApp->devicePixelRatio());
    pixmap.fill(Qt::transparent);

    QPainter painter(&pixmap);
    painter.setRenderHint(QPainter::Antialiasing);
    painter.setPen(QPen(color, 1.5));
    painter.drawEllipse(QPointF(8, 8), 5.5, 5.5);
    painter.drawLine(QPointF(8, 4.5), QPointF(8, 8));
    painter.drawLine(QPointF(8, 8), QPointF(10.5, 9.5));

    QIcon icon(pixmap);
#ifdef Q_OS_MAC
    // Template image: the system tints it black/white to match the
    // active appearance, like native menu bar icons.
    icon.setIsMask(true);
#endif
    return icon;
}

QColor trayIconColorForScheme(Qt::ColorScheme scheme)
{
    return scheme == Qt::ColorScheme::Dark ? QColor(Qt::white) : QColor(Qt::black);
}
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

    app.setApplicationName("Clouck");
    app.setOrganizationName("Clouck");
    app.setApplicationDisplayName("Clouck");

    ClockWidget clock;
    clock.show();

    AutoStartManager::enableForCurrentApplication();

    const QStyleHints *styleHints = app.styleHints();
    QSystemTrayIcon trayIcon(createTrayIcon(trayIconColorForScheme(styleHints->colorScheme())), &app);
    trayIcon.setToolTip("Clouck");

    QObject::connect(styleHints, &QStyleHints::colorSchemeChanged, &trayIcon,
                     [&trayIcon](Qt::ColorScheme scheme) {
                         trayIcon.setIcon(createTrayIcon(trayIconColorForScheme(scheme)));
                     });

    QMenu trayMenu;
    QAction *toggleClockAction = trayMenu.addAction("Turn Clock Off");
    QAction *quitAction = trayMenu.addAction("Quit");

    const auto toggleClock = [&clock, toggleClockAction]() {
        if (clock.isVisible())
        {
            clock.hide();
            toggleClockAction->setText("Turn Clock On");
            return;
        }

        clock.show();
        clock.raise();
        toggleClockAction->setText("Turn Clock Off");
    };

    QObject::connect(toggleClockAction, &QAction::triggered, &app, toggleClock);
    QObject::connect(quitAction, &QAction::triggered, &app, &QApplication::quit);
    QObject::connect(&trayIcon, &QSystemTrayIcon::activated, &app,
                     [toggleClock](QSystemTrayIcon::ActivationReason reason) {
                         if (reason == QSystemTrayIcon::Trigger)
                         {
                             toggleClock();
                         }
                     });

    trayIcon.setContextMenu(&trayMenu);
    trayIcon.show();

    return app.exec();
}