#include "customlogo.h"
#include "ui_customlogo.h"
#include "QFileDialog"


#include <QMessageBox>
#include <QDateTime>
#include <QTextCodec>
#include <QTextStream>
#include <QBuffer>
#include <QDebug>


static QPointF BG_POS[] = {
	QPointF(159, 61), QPointF(482, 61), QPointF(802, 61),
	QPointF(1122, 61), QPointF(1449, 61), QPointF(1772, 61),
	QPointF(2095, 61), QPointF(2414, 61), QPointF(2738, 61),
	QPointF(3060, 61), QPointF(900, 2094), QPointF(900, 2420),
};

static int BG_POS_COUNT = sizeof(BG_POS) / sizeof(BG_POS[0]);



static QPointF NAME_OFFSET_START = QPointF(79, 377);
static qreal EACH_WORD_OFFSET = 142;

static QColor FONT_COLOR = QColor(0, 0, 0);

CustomLogo::CustomLogo(QFont* font, QDialog* parent):
    QDialog(parent),
    ui(new Ui::CustomLogo),
    customFont(font)
{
    ui->setupUi(this);
	

    connect(ui->load_bg_btn, &QPushButton::released,this, &CustomLogo::onClickedBtn);
    connect(ui->load_list_btn, &QPushButton::released, this, &CustomLogo::onClickedBtn);
}

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

void CustomLogo::loadBGFromFile()
{
    auto fileContentReady = [this](const QString& fileName, const QByteArray& fileContent) {
        if (fileName.isEmpty()) {
            // No file was selected
        }else{
            QPixmap pix;
            if(pix.loadFromData(fileContent,"JPG")) {
                ui->display_label->setPixmap(pix);
            }else{
                qDebug()<<"Data content not image format";
            }
        }
    };

    QFileDialog::getOpenFileContent("Image (*.jpg)", fileContentReady);
}

void CustomLogo::loadListFromFile()
{
    auto fileContentReady = [this](const QString& fileName, const QByteArray& fileContent) {
        if (fileName.isEmpty()) {
            // No file was selected
        }
        else {
			QList<NameInfo_t> nameList = getNameByFileContent(Name_zh, fileContent);
			if (!nameList.isEmpty()) {
				qDebug() << "List size: "<< QString::number(nameList.count());
				gerneraImageFromList(nameList, Name_zh);
			}
			else {
				qDebug() << "List is empty!!";
			}
        }

    };

    QFileDialog::getOpenFileContent("CSV file (*.csv)", fileContentReady);

}

void CustomLogo::gerneraImageFromList(const QList<NameInfo_t>& nameList, Name_Type_e type)
{
	int export_times = 0;
	QGraphicsScene scene;
	scene.setBackgroundBrush(QBrush(QColor(255, 255, 255)));
	QGraphicsView view(&scene);

	switch (type) {
	case Name_zh:
	{
		for (int n = 0; n < nameList.length(); n++) {
			int idx = n % BG_POS_COUNT;
			NameInfo_t name_info = nameList.at(n);
	
			if (idx == 0) {

				QGraphicsRectItem* bg_item = new QGraphicsRectItem(0, 0, BG_WIDTH, BG_HEIGHT);
				bg_item->setBrush(QBrush(QColor(255, 255, 255)));
				scene.addItem(bg_item);
			}

#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
			QPixmap _bg = ui->display_label->pixmap()->copy();
#else
			QPixmap _bg = ui->display_label->pixmap().copy();
#endif // 

           

            QGraphicsPixmapItem* name_bgItem = new QGraphicsPixmapItem(_bg);
			bool rot = (idx == 10 || idx == 11);
			name_bgItem->setRotation(rot ? -90 : 0);
			name_bgItem->setPos(BG_POS[idx]);
			scene.addItem(name_bgItem);


			if (name_info.name1.isEmpty()) {
				QMessageBox msgBox;
				msgBox.setText(QString().asprintf("Name is Empty at %d", export_times + 1));
				msgBox.exec();
			}
			QString name = name_info.name1;
			int name_len = name.length();
			for (int j = 0; j < 1; j++) { // never reverse
				qreal xscale, yscale;

				xscale = yscale = (j == 1) ? -1 : 1;
				QPointF pos = NAME_OFFSET_START;
				qreal y_offset =  0;
				if (name_len == 2) {
					if (!rot) {
						pos.setY(pos.y() + 82.0 * xscale);
					}
					else {
						pos.setX(pos.x() + 82.0 * xscale);

					}
					y_offset = 25;
				}

				for (int k = 0; k < name_len; k++) {
					QGraphicsTextItem* textItem = new QGraphicsTextItem(name.mid(k, 1), name_bgItem);
					textItem->setFont(*customFont);
					textItem->setDefaultTextColor(FONT_COLOR);
					textItem->setPos(pos.x(),pos.y() + k* EACH_WORD_OFFSET + y_offset);
					textItem->setTransform(QTransform::fromScale(xscale, yscale));
					scene.addItem(textItem);
				}
			}
			bool is_export_page = ((idx + 1) % BG_POS_COUNT == 0);
			if (is_export_page || n == nameList.count() - 1) {
				QString date_str = QDateTime::currentDateTime().toString("MMddhhmm");
				QString file_name = QString("Signal_%2_%1.jpg").arg(QString::number(export_times + 1), date_str);
                //saveToImage(file_name, &scene);
                INameCreater().saveToImage(file_name, &scene);
				export_times++;

				scene.clear();
			}
		}
	}
	break;

	default:
		break;
	}

	QMessageBox msgBox;
	msgBox.setText(QString().asprintf("Export Finshed. Count:%d", export_times));
	msgBox.exec();

}

QList<NameInfo_t> CustomLogo::getNameByFileContent(Name_Type_e type, const QByteArray& conetent)
{
	QList<NameInfo_t> nameList;

	QTextCodec* tc = QTextCodec::codecForName("Big5");
	QString codec = tc->toUnicode(conetent.data());
	QTextStream stream(&codec);

	int row = 0;
	while (!stream.atEnd())
	{
		NameInfo_t info;
		QString line = stream.readLine();
		QString name_tc = line;
		QStringList csvList = name_tc.split(',');

		QString name, eng_name, bg_type;

		switch (type) {
		case Name_zh:
			name = csvList.at(0);
			break;
		default:
			break;

		}

		qDebug() << "row :" << row << " " << name;

		if (name.compare("name_1") == 0 || name.compare("name") == 0 ||
			eng_name.compare("eng_name") == 0  ) {
			//pass first line
			continue;
		}

		info.name1 = name;

		nameList.append(info);

		row++;
	}
	return nameList;
}


void CustomLogo::onClickedBtn() {
    auto sender = (QPushButton*)QObject::sender();

    if (sender == ui->load_bg_btn) {
        loadBGFromFile();
    }
    else if (sender == ui->load_list_btn) {
        loadListFromFile();
    }

}