#include <QApplication>
#include <QCommandLineParser>
#include <QDebug>
#include <csignal>
#include <QJsonObject>
#include <QTextStream>
#include "hyperiongrabber.h"
#include "HyperionProcessor.h"
#include "LedColorMapping.h"

// ANSI escape code to clear the screen
const QString ANSI_RESET = "\033[0m";

// Function to get a printable block with a specific background color
QString getAnsiColorBlock(const QColor& color) {
    if (!color.isValid()) {
        return "  ";
    }
    // Use 24-bit color ANSI escape codes
    return QString("\033[48;2;%1;%2;%3m  ").arg(color.red()).arg(color.green()).arg(color.blue());
}

void printLedColorsAsBoxes(const QVector<QColor>& ledColors) {
    QTextStream cout(stdout);
    for (const QColor& color : ledColors) {
        cout << getAnsiColorBlock(color);
    }
    cout << ANSI_RESET << "\n";
    cout.flush();
}


static HyperionGrabber *grabber = nullptr;
static QApplication *app = nullptr;
static HyperionProcessor *processor = nullptr;

void quit(int) {
    if (grabber != nullptr) {
        delete grabber;
    }
    if (processor != nullptr) {
        delete processor;
    }
    if (app != nullptr) {
        app->quit();
    }
}

class GrabberConfigurator : public QObject
{
    Q_OBJECT

public:
    GrabberConfigurator(const QHash<QString, QString> &opts, const LedLayout& layout, const QJsonObject& config, QObject *parent = nullptr)
        : QObject(parent), _layout(layout)
    {
        grabber = new HyperionGrabber(opts);
        processor = new HyperionProcessor(layout, config);
        connect(grabber, &HyperionGrabber::imageReady, this, &GrabberConfigurator::processFrame);
    }

public slots:
    void processFrame(const QImage &image) {
        qDebug() << "GrabberConfigurator::processFrame called.";
        if (image.isNull()) return;

        // Process the image with HyperionProcessor
        QVector<QColor> ledColors = processor->process(image);

        // Debugging: Print some sample LED colors
        if (!ledColors.isEmpty()) {
            qDebug() << "Sample LED Colors:";
            qDebug() << "  LED 0:" << ledColors.at(0).name();
            if (ledColors.size() > 1) qDebug() << "  LED 1:" << ledColors.at(1).name();
            if (ledColors.size() > _layout.bottom) qDebug() << "  LED (bottom+1):" << ledColors.at(_layout.bottom).name();
            if (ledColors.size() > _layout.bottom + _layout.right) qDebug() << "  LED (bottom+right+1):" << ledColors.at(_layout.bottom + _layout.right).name();
        }

        // Get the processed image dimensions and border info
        QSize processedImageSize = processor->getLastImageSize();
        BlackBorder border = processor->getLastBorder();

        // Calculate the content rectangle
        int xOffset = border.verticalSize;
        int yOffset = border.horizontalSize;
        int contentWidth = processedImageSize.width() - (2 * border.verticalSize);
        int contentHeight = processedImageSize.height() - (2 * border.horizontalSize);

        if (contentWidth > 0 && contentHeight > 0) {
            // QImage croppedImage = image.copy(xOffset, yOffset, contentWidth, contentHeight);

            // Debugging: Print ledMap details
            const QVector<QVector<QPoint>>& ledMap = processor->getLedMap();
            qDebug() << "ledMap size:" << ledMap.size();

            for (int i = 0; i < ledColors.size(); ++i) {
                const QColor& color = ledColors.at(i);
                const QVector<QPoint>& pixels = ledMap.at(i);
                qDebug() << "  LED" << i << "pixels size:" << pixels.size();

                // Debugging: Print rectangle dimensions (if needed, can be re-enabled)
                // int minX = image.width(); int minY = image.height(); int maxX = 0; int maxY = 0;
                // for (const QPoint& p : pixels) { minX = qMin(minX, p.x()); minY = qMin(minY, p.y()); maxX = qMax(maxX, p.x()); maxY = qMax(maxY, p.y()); }
                // int rectMinX = minX - xOffset; int rectMinY = minY - yOffset;
                // int rectWidth = qMax(1, maxX - minX + 1); int rectHeight = qMax(1, maxY - minY + 1);
                // qDebug() << "LED" << i << ": Rect(" << rectMinX << "," << rectMinY << "," << rectWidth << "," << rectHeight << ") Color:" << color.name();
            }

            // Print LED colors as a line of boxes in the terminal
            printLedColorsAsBoxes(ledColors);

        } else {
            qDebug() << "No content to process after black border removal.";
        }
    }

private:
    LedLayout _layout; // Still needed for HyperionProcessor constructor
};

int main(int argc, char *argv[])
{
    app = new QApplication(argc, argv);
    signal(SIGINT, quit);
    signal(SIGTERM, quit);

    QApplication::setApplicationName("GrabberConfigurator");
    QApplication::setApplicationVersion("0.2");

    QCommandLineParser parser;
    parser.setApplicationDescription("A tool to test the Hyperion processing pipeline.");
    parser.addHelpOption();
    parser.addVersionOption();

    // Add options for HyperionGrabber (scale, frameskip, etc.)
    parser.addOption(QCommandLineOption(QStringList() << "s" << "scale", "Divisor used to scale your screen resolution (e.g., 8).", "scale", "8"));
    parser.addOption(QCommandLineOption(QStringList() << "f" << "frameskip", "Number of frames to skip between captures (e.g., 1).", "frameskip", "0"));

    // Add options for the LED layout
    parser.addOption(QCommandLineOption(QStringList() << "leds-bottom", "Number of LEDs on the bottom edge.", "count", "70"));
    parser.addOption(QCommandLineOption(QStringList() << "leds-right", "Number of LEDs on the right edge.", "count", "20"));
    parser.addOption(QCommandLineOption(QStringList() << "leds-top", "Number of LEDs on the top edge.", "count", "70"));
    parser.addOption(QCommandLineOption(QStringList() << "leds-left", "Number of LEDs on the left edge.", "count", "20"));

    // Add options for the processor
    parser.addOption(QCommandLineOption(QStringList() << "bbt", "Black border threshold (0.0 to 1.0).", "threshold", "0.1"));

    parser.process(*app);

    QHash<QString, QString> grabberOpts;
    grabberOpts.insert("scale", parser.value("scale"));
    grabberOpts.insert("frameskip", parser.value("frameskip"));

    LedLayout layout;
    layout.bottom = parser.value("leds-bottom").toInt();
    layout.right = parser.value("leds-right").toInt();
    layout.top = parser.value("leds-top").toInt();
    layout.left = parser.value("leds-left").toInt();

    QJsonObject processorConfig;
    processorConfig["blackBorderThreshold"] = parser.value("bbt").toDouble();

    // No QLabel or QWidget needed for this visualization
    // QWidget window;
    // QLabel label;
    // label.setParent(&window);
    // label.setScaledContents(true);
    // window.show();

    GrabberConfigurator configurator(grabberOpts, layout, processorConfig);

    qInfo() << "Starting GrabberConfigurator. A line of colored boxes should appear in the terminal. Press Ctrl+C to exit.";

    return app->exec();
}

#include "grabberconfigurator.moc"