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


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


static QPointF BG_POS_START = QPointF(159, 61);
static QPointF BG_POS_ROT_START = QPointF(900, 2094);
static qreal BG_WIDTH_OFFSET = 320;
static int NAME_COUNT_IN_PAGE = 12;


static QPointF NAME_OFFSET_START = QPointF(79, 377);
static qreal EACH_WORD_OFFSET = 142;
static QColor FONT_COLOR = QColor(0, 0, 0);



class QGraphicsCloneTextItem : public QGraphicsTextItem {
public:
	QGraphicsCloneTextItem(const QString& text, QGraphicsItem* parent = nullptr) :
		QGraphicsTextItem(text, parent) {

	}

	QGraphicsCloneTextItem* clone(QGraphicsItem* parent = nullptr) const {

		QGraphicsCloneTextItem* newItem = new QGraphicsCloneTextItem(toPlainText(), parent);
		newItem->setFont(font());
		newItem->setPos(pos());
		newItem->setDefaultTextColor(defaultTextColor());
		return newItem;
	}

};



CustomLogo::CustomLogo(QFont* font, QDialog* parent) :
	QDialog(parent),
	ui(new Ui::CustomLogo),
	customFont(font),
	fontColor(QColor(0, 0, 0))
{
	ui->setupUi(this);


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

	QPalette palette = ui->color_label->palette();
	palette.setColor(QPalette::WindowText, fontColor);
	ui->color_label->setPalette(palette);
}

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 % NAME_COUNT_IN_PAGE;
			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);
			qreal item_pos_x = rot ? BG_POS_ROT_START.x() : BG_POS_START.x() + idx * BG_WIDTH_OFFSET;
			qreal item_pos_y = rot ? BG_POS_ROT_START.y() + (idx - 10) * BG_WIDTH_OFFSET : BG_POS_START.y();
			name_bgItem->setPos(item_pos_x, item_pos_y);
			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();
			}
			QGraphicsRectItem* name_rectItem = new QGraphicsRectItem(QRectF(0, 0, name_bgItem->boundingRect().width(), name_bgItem->boundingRect().height()/2), name_bgItem);
			name_rectItem->setPen(QPen(QColor(0, 0, 0, 0)));

			QString name = name_info.name1;
			int name_len = name.length();
			QPointF pos = NAME_OFFSET_START;
			qreal y_offset = 0;
			if (name_len == 2) {	
				pos.setY(pos.y() + 82.0 );	
				y_offset = 25;
			}

			for (int k = 0; k < name_len; k++) {
				QGraphicsCloneTextItem* textItem = new QGraphicsCloneTextItem(name.mid(k, 1), name_rectItem);
				textItem->setFont(*customFont);
				textItem->setDefaultTextColor(fontColor);
				textItem->setPos(pos.x(), pos.y() + k * EACH_WORD_OFFSET + y_offset);
			}


			if (ui->double_checkbox->isChecked()) {
				QGraphicsRectItem* name_reverse_rectItem = new QGraphicsRectItem(name_rectItem->rect(), name_bgItem);
				name_reverse_rectItem->setPen(QPen(QColor(0, 0, 0, 0)));
				name_reverse_rectItem->setPos(name_bgItem->boundingRect().width(), name_bgItem->boundingRect().height());
				foreach(auto item, name_rectItem->childItems()) {
					QGraphicsCloneTextItem* _ti = ((QGraphicsCloneTextItem*)item)->clone(name_reverse_rectItem);
				}
				name_reverse_rectItem->setRotation(180);
				qDebug() << "name_rect item child count:" << name_rectItem->childItems().size();
			}


			bool is_export_page = ((idx + 1) % NAME_COUNT_IN_PAGE == 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();
	}
	else if (sender == ui->color_btn) {

		QColor color = QColorDialog::getColor(Qt::red, this);

		if (color.isValid()) {
			fontColor = color;
			QPalette palette = ui->color_label->palette();
			palette.setColor(QPalette::WindowText, color);
			ui->color_label->setPalette(palette);
		}
	}

}