#include "TowelCreater.h"
#include <QTextCodec>
#include <QTextStream>
#include <qDebug>
#include <QMessageBox>
#include <QDateTime>



static QString LABEL_BG_PATH[] = { ":/NameCreater/resource/girl_bg.jpg",":/NameCreater/resource/boy_bg.jpg" };
static qreal LABEL_POS_X[] = { 250,1645,3300 };

static qreal LABEL_POS_Y_START = 120;
static qreal LABEL_POS_Y_DIFF = 315;


static qreal NAME_OFFSET_X[] = { 128, 715 };
static qreal NAME_OFFSET_Y = 38;
static qreal NAME_TWO_WORD_OFFSET = 25;

static int MAX_LABEL_IN_PAPER = 15;
static int LABEL_MAX_NUM_PER_COL = 7;
static int FONT_PIXEL_SIZE = 240;

static qreal LABEL_HIGHT_LIMIT = 350;
static int TEXT_WIDTH = 800;

TowelCreater::TowelCreater()
{
}

TowelCreater::~TowelCreater()
{
}

QList<NameInfo_t> TowelCreater::getNameByFileContent(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())
	{
		
		QString line = stream.readLine();
		QString name_tc = line;
		QStringList csvList = name_tc.split(',');


		QString name = csvList.at(0); //QString::fromLocal8Bit(csvList.at(0));
		QString bg_type = csvList.at(1);//QString::fromLocal8Bit(csvList.at(1));
		int num = csvList.last().toInt();//QString::fromLocal8Bit(csvList.last());
		qDebug() << "row :" << row << " " << name << ", bg_type: " << bg_type << "Count: " <<QString::number(num);

		if (name.compare("name") == 0) {
			//pass first line
			continue;
		}
		else {
			for (int i = 0; i < num; ++i) {
				NameInfo_t info;
				info.name1 = name;
				info.bg_type = (bg_type.compare("g") == 0) ? 0 : 1;
				nameList.append(info);
			}

		}
		row++;
	}
	return nameList;
	
}

void TowelCreater::generaImageFromCSV(const QString& filename, const QByteArray& filecontent, const QFont& font, const QColor& font_color)
{
	int export_times = 0;

	QList<NameInfo_t> nameList = getNameByFileContent(filecontent);
	if (nameList.isEmpty()) {
		QMessageBox msgBox;
		msgBox.setText(QString("Name is empty ! ").append(filename));
		msgBox.exec();
	}

	QGraphicsScene scene;
	scene.setBackgroundBrush(QBrush(QColor(255, 255, 255)));
	QGraphicsView view(&scene);


	for (int idx = 0; idx < nameList.length(); idx++) {
		NameInfo_t name = nameList.at(idx);
		if ((idx % MAX_LABEL_IN_PAPER) == 0) {
			QGraphicsRectItem* bg_item = new QGraphicsRectItem(0, 0, BG_WIDTH, BG_HEIGHT);
			bg_item->setBrush(QBrush(QColor(255, 255, 255)));
			//QGraphicsPixmapItem* bg_item = QGraphicsPixmapItem(QPixmap(BG_SMAPLE_PATH));
			scene.addItem(bg_item);

		}

		int col_idx = (idx % MAX_LABEL_IN_PAPER) / LABEL_MAX_NUM_PER_COL;
		int col_num = (idx % MAX_LABEL_IN_PAPER) % LABEL_MAX_NUM_PER_COL;

		QString label_rel_path = LABEL_BG_PATH[name.bg_type];

		if (col_idx < 2) {
			QGraphicsPixmapItem* label_item = new QGraphicsPixmapItem(QPixmap(label_rel_path));
			label_item->setPos(LABEL_POS_X[col_idx], LABEL_POS_Y_START + LABEL_POS_Y_DIFF * col_num);
			label_item->setOpacity(1);
			scene.addItem(label_item);

			for (int i = 0; i < 2; ++i) {
				qreal offset_x = name.name1.count() == 2 ? NAME_TWO_WORD_OFFSET : 0;
				QGraphicsTextItem* name_item = new QGraphicsTextItem(name.name1);
				name_item->setTextWidth(TEXT_WIDTH);
				name_item->setFont(font);
				name_item->setDefaultTextColor(font_color);
				name_item->setPos(label_item->x() + NAME_OFFSET_X[i] + offset_x, label_item->y() + NAME_OFFSET_Y);
				scene.addItem(name_item);
			}

		}
		else {
			QGraphicsPixmapItem* label_item = new QGraphicsPixmapItem(QPixmap(label_rel_path));
			label_item->setRotation(90);
			label_item->setPos(LABEL_POS_X[col_idx], LABEL_POS_Y_START + LABEL_POS_Y_DIFF * col_num);
			label_item->setOpacity(1);
			scene.addItem(label_item);
			
			
			for (int i = 0; i < 2; ++i) {
				qreal offset_x = name.name1.count() == 2 ? NAME_TWO_WORD_OFFSET : 0;
				QGraphicsTextItem* name_item = new QGraphicsTextItem(name.name1);
				name_item->setTextWidth(TEXT_WIDTH);
				name_item->setFont(font);
				name_item->setDefaultTextColor(font_color);
				name_item->setRotation(90);
				name_item->setPos(label_item->x() - NAME_OFFSET_Y, label_item->y() + NAME_OFFSET_X[i] + offset_x);
				scene.addItem(name_item);
			}

		}

		if ((idx % MAX_LABEL_IN_PAPER == MAX_LABEL_IN_PAPER - 1) || idx == nameList.count() - 1) {
			QString date_str = QDateTime::currentDateTime().toString("MMddhhmm");
			QString file_name = QString("Towel_%2_%1.jpg").arg(QString::number(export_times + 1), date_str);
			saveToImage(file_name, &scene);
			export_times++;

			scene.clear();
		}


	}


}