#include "BirthdayCreater.h"
#include <QTextCodec>
#include <QTextStream>
#include <QDebug>
#include <QMessageBox>
#include <QDateTime>


#define LABEL_HIGHT_LIMIT		350.0
#define LABEL_POS_X_OFFSET		323.0
#define NAME_TWO_WORD_OFFSET	170.0
#define NAME_THREE_WORD_OFFSET  145.0
#define MAX_LABEL_IN_PAPER		10
#define FONT_PIXEL_SIZE			120

static QPoint LABEL_POS_START = QPoint(163, 115);
static QPoint NAME_OFFSET_START = QPoint(82, 712);
static QPoint NAME_OFFSET_REVERSE_START = QPoint(214, 1745);

BirthdayCreater::BirthdayCreater() :INameCreater()
{
	label_bg_map["b"] = ":/NameCreater/resource/b.jpg";
	label_bg_map["g"] = ":/NameCreater/resource/g.jpg";
	label_bg_map["m"] = ":/NameCreater/resource/m.jpg";
	label_bg_map["p"] = ":/NameCreater/resource/p.jpg";
	label_bg_map["r"] = ":/NameCreater/resource/r.jpg";
	label_bg_map["w"] = ":/NameCreater/resource/w.jpg";
	label_bg_map["y"] = ":/NameCreater/resource/y.jpg";
	label_bg_map["co"] = ":/NameCreater/resource/co.jpg";
	label_bg_map["ol"] = ":/NameCreater/resource/ol.jpg";
	label_bg_map["sn"] = ":/NameCreater/resource/sn.jpg";
	label_bg_map["st"] = ":/NameCreater/resource/st.jpg";

}

BirthdayCreater::~BirthdayCreater()
{
}

QList<NameInfo_t> BirthdayCreater::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())
	{
		NameInfo_t info;
		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));
		QString type_str = csvList.last();//QString::fromLocal8Bit(csvList.last());
		qDebug() << "row :" << row << " " << name << ", bg_type: " << bg_type;

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

		info.name1 = name;
		info.name2 = bg_type;

		nameList.append(info);

		row++;
	}
	return nameList;
}

void BirthdayCreater::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++) {

		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);

		}
		NameInfo_t name_info = nameList.at(idx);
		int col_index = idx % MAX_LABEL_IN_PAPER;
		QString label_rel_path = label_bg_map[name_info.name2];
		QGraphicsPixmapItem* label_item = new QGraphicsPixmapItem(QPixmap(label_rel_path));
		label_item->setPos(int(LABEL_POS_START.x() + LABEL_POS_X_OFFSET * col_index), int(LABEL_POS_START.y()));
		label_item->setOpacity(1);
		scene.addItem(label_item);

		int chrismas_y_offset = 0;
		if (name_info.name2.compare("co") == 0 || name_info.name2.compare("ol") == 0 ||
			name_info.name2.compare("st") == 0 || name_info.name2.compare("sn") == 0) {
			chrismas_y_offset = 30;
		}

		for (int i = 0; i < 2; i++) {
			int name_word_len = name_info.name1.length();
			qreal two_word_y = (name_word_len == 2) ? NAME_TWO_WORD_OFFSET / 2 : 0;
			qreal offset_y = (name_word_len == 2) ? NAME_TWO_WORD_OFFSET : NAME_THREE_WORD_OFFSET;

			for (int w = 0; w < name_word_len; w++) {
				QGraphicsTextItem* word_item = new QGraphicsTextItem(name_info.name1.at(w));
				word_item->setFont(font);
				word_item->setDefaultTextColor(font_color);
				if (i == 0) {
					word_item->setPos(label_item->x() + NAME_OFFSET_START.x(), label_item->y() + NAME_OFFSET_START.y() + two_word_y + chrismas_y_offset + offset_y * w);
				}
				else {
					word_item->setTransform(QTransform().fromScale(-1, -1));
					word_item->setPos(label_item->x() + NAME_OFFSET_REVERSE_START.x(), label_item->y() + NAME_OFFSET_REVERSE_START.y() - two_word_y - chrismas_y_offset - offset_y * w);
				}
				scene.addItem(word_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("Birthday_%2_%1.jpg").arg(QString::number(export_times + 1), date_str);
			saveToImage(file_name, &scene);
			export_times++;

			scene.clear();
		}
	}

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

}