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


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


#define DEMO_BG_PATH ":/NameCreater/resource/custom_logo/bg_1.jpg"

#define	KEY_DEMO_BG_ITEM 10
#define KEY_WORD_ITEM 100
#define KEY_WORD_ITEM_X_POS 101
#define KEY_WORD_ITEM_Y_POS 102
#define DEMO_WORD_UNICODE "\u92ea\u96dc\u5152"

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, 365);
static qreal EACH_WORD_OFFSET = 142;
static QColor FONT_COLOR = QColor(0, 0, 0);

static QColorDialog* s_colorDialog = nullptr;



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);
	x_adjust_offset = y_adjust_offset = 0;
	onSliderValueChanged(0);

	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);
	connect(ui->reset_adjust_btn, &QPushButton::released, this, &CustomLogo::onClickedBtn);
	connect(ui->double_checkbox, &QCheckBox::clicked, this, &CustomLogo::onCheckboxClicked);

	connect(ui->x_adjust_slider, &QSlider::valueChanged, this, &CustomLogo::onSliderValueChanged);
	connect(ui->y_adjust_slider, &QSlider::valueChanged, this, &CustomLogo::onSliderValueChanged);


	QFont _f(*font);
	_f.setPixelSize(20);


	QPalette palette = ui->color_label->palette();
	palette.setColor(QPalette::WindowText, fontColor);
	ui->color_label->setPalette(palette);
	ui->color_label->setFont(_f);
	ui->color_btn->setFont(_f);
	ui->double_checkbox->setFont(_f);




	demo_scene.setBackgroundBrush(QBrush(QColor(255, 255, 255)));
	ui->demo_graphicsView->setScene(&demo_scene);

	QPixmap def_demo_bg(DEMO_BG_PATH);
	createDemoGraphicItemBG(def_demo_bg);

}

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);
				createDemoGraphicItemBG(pix);
			}
			else {
				qDebug() << "Data content not image format";
			}
		}
		};

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

void CustomLogo::createDemoGraphicItemBG(const QPixmap& img)
{
	demo_scene.clear();

	bool isReverse = ui->double_checkbox->isChecked();

	QGraphicsPixmapItem* name_bgItem = new QGraphicsPixmapItem(img);
	name_bgItem->setData(KEY_DEMO_BG_ITEM, KEY_DEMO_BG_ITEM);
	name_bgItem->setPos(10, 10);
	demo_scene.addItem(name_bgItem);

	QGraphicsRectItem* name_rectItem = NULL, * name_reverse_rectItem = NULL;

	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, 255)));

	if (isReverse) {
		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());
		name_reverse_rectItem->setRotation(180);
	}



	QString name = QString(DEMO_WORD_UNICODE);
	int name_len = name.length();
	QPointF pos = NAME_OFFSET_START;
	qreal y_offset = 0;
	if (name_len == 2) {
		pos.setY(pos.y() + 65.0);
		y_offset = 55;
	}



	for (int k = 0; k < name_len; k++) {
		QGraphicsCloneTextItem* textItem = new QGraphicsCloneTextItem(name.mid(k, 1), name_rectItem);
		textItem->setFont(*customFont);
		textItem->setDefaultTextColor(fontColor);
		
		qreal _posX = (name_rectItem->boundingRect().width() / 2 - textItem->boundingRect().width() / 2);
		qreal _posY = (pos.y()) + k * (EACH_WORD_OFFSET + y_offset);
		qDebug() << "Name num:" << QString::number(k) << "PosY:" << QString::number(_posY);
		textItem->setData(KEY_WORD_ITEM, QVariant(KEY_WORD_ITEM));
		textItem->setData(KEY_WORD_ITEM_X_POS, QVariant(_posX));
		textItem->setData(KEY_WORD_ITEM_Y_POS, QVariant(_posY));
		textItem->setPos(_posX+x_adjust_offset, _posY+y_adjust_offset);

		if (name_reverse_rectItem) {
			QGraphicsCloneTextItem* _ti = ((QGraphicsCloneTextItem*)textItem)->clone(name_reverse_rectItem);
			_ti->setData(KEY_WORD_ITEM, QVariant(KEY_WORD_ITEM));
			_ti->setData(KEY_WORD_ITEM_X_POS, QVariant(_posX));
			_ti->setData(KEY_WORD_ITEM_Y_POS, QVariant(_posY));
		}
	}
}

void CustomLogo::updateDemoGraphicItemBG() {
	foreach(QGraphicsItem * item, demo_scene.items()) {
		QVariant v = item->data(KEY_WORD_ITEM);
		if (v.toInt() == KEY_WORD_ITEM) {
			((QGraphicsTextItem*)item)->setDefaultTextColor(fontColor);
			qreal _ori_x = item->data(KEY_WORD_ITEM_X_POS).toReal();
			qreal _ori_y = item->data(KEY_WORD_ITEM_Y_POS).toReal();
			item->setPos(_ori_x + x_adjust_offset, _ori_y + y_adjust_offset);
		}
	}
}

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);
			}


			QPixmap _bg;

			foreach(QGraphicsItem * item, demo_scene.items()) {
				QVariant v = item->data(KEY_DEMO_BG_ITEM);
				if (v.toInt() == KEY_DEMO_BG_ITEM) {
					_bg = ((QGraphicsPixmapItem*)item)->pixmap().copy();
					break;
				}

			}


			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() + 65.0);
				y_offset = 55;
			}

			for (int k = 0; k < name_len; k++) {
				QGraphicsCloneTextItem* textItem = new QGraphicsCloneTextItem(name.mid(k, 1), name_rectItem);
				textItem->setFont(*customFont);
				textItem->setDefaultTextColor(fontColor);
				qreal _posX = name_rectItem->boundingRect().width() / 2 - textItem->boundingRect().width() / 2;
				qreal _posY = pos.y() + k * (EACH_WORD_OFFSET + y_offset);
				qDebug() << "Name num:" << QString::number(k) << "PosY:" << QString::number(_posY);
				textItem->setPos(_posX+x_adjust_offset, _posY+y_adjust_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::onColorSelected(const QColor& color)
{
	qDebug() << "color accept: r:" << color.red() << ", g:" << color.green() <<", b:" << color.blue();
	fontColor = QColor(color);

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

	updateDemoGraphicItemBG();
}

void CustomLogo::onSliderValueChanged(int value)
{
	auto slider = QObject::sender();

	if (slider == ui->x_adjust_slider) {
		x_adjust_offset = value;
	}
	else if (slider == ui->y_adjust_slider) {
		y_adjust_offset = value;
	
	}

	ui->x_adjust_label->setText(QString("X: %1").arg(QString::number(x_adjust_offset)));
	ui->y_adjust_label->setText(QString("Y: %1").arg(QString::number(y_adjust_offset)));

	updateDemoGraphicItemBG();
}

void CustomLogo::onCheckboxClicked(bool click)
{
	foreach(QGraphicsItem * item, demo_scene.items()) {
		QVariant v = item->data(KEY_DEMO_BG_ITEM);
		if (v.toInt() == KEY_DEMO_BG_ITEM) {
			QPixmap _bg = ((QGraphicsPixmapItem*)item)->pixmap().copy();
			createDemoGraphicItemBG(_bg);
			break;
		}

	}
}


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) {

		if (s_colorDialog == nullptr) {
			s_colorDialog = new QColorDialog(ui->color_label->palette().color(QPalette::WindowText), this);
			connect(s_colorDialog, &QColorDialog::colorSelected, this, &CustomLogo::onColorSelected);
		}
		s_colorDialog->open();

	}
	else if (sender == ui->reset_adjust_btn) {
		ui->x_adjust_slider->setValue(0);
		ui->y_adjust_slider->setValue(0);
	}

}