function Chart() {
	this.chartGraphics = game.add.graphics(0, 0);
	this.printChartTitle();
	this.printChartBaseLine();

	for(var i = 0; i < 7; i++)
		new ChartRecord(i);
}

Chart.prototype.printChartTitle = function() {
	var offsetY = -25;
	var fontStyle = { font: "30px Arial", fill: "#fff", align: "center" };

	Chart.drawText(Chart.DATE_POS_X, Chart.CHART_LINE_Y + offsetY, "날짜", fontStyle);
	Chart.drawText(Chart.RECORD_POS_X, Chart.CHART_LINE_Y + offsetY, "점수", fontStyle);
	Chart.drawText(Chart.GRADE_POS_X, Chart.CHART_LINE_Y + offsetY, "등급", fontStyle);
	Chart.drawText(Chart.SUBJECT_POS_X, Chart.CHART_LINE_Y + offsetY, "과목", fontStyle);
}

Chart.prototype.printChartBaseLine = function() {
	this.chartGraphics.lineStyle(3, 0xffd900, 1);
	this.chartGraphics.moveTo(Chart.CHART_LINE_START_X, Chart.CHART_LINE_Y);
	this.chartGraphics.lineTo(game.world.width - Chart.CHART_LINE_START_X, Chart.CHART_LINE_Y);
}

Chart.prototype.drawRecordGraph = function(index, date, bestRecord, min, max) {
	var reverseIndex = (Chart.CHART_COUNT - 1) - index;
	var posX = Chart.CHART_LINE_START_X + Chart.CHART_GRAPH_OFFSET_X + reverseIndex * Chart.CHART_GAP_PX;
	var posY = Chart.CHART_LINE_Y;

	this.drawText(
		posX, posY + Chart.CHART_DATE_OFFSET_Y,
		date === "-" ? "-" : StringUtil.printMonthDay(date)
	);

	if(bestRecord === "")
		return;

	this.drawText(
		posX, posY - Chart.CHART_HEIGHT - Chart.CHART_RECORD_OFFSET_Y,
		// StringUtil.getRecordTextWithoutUnit(bestRecord) + StringUtil.getScoreUnit(sessionStorageManager.playingAppID)
		RecordUtil.getRecordValueWithUnit(bestRecord, sessionStorageManager.getPlayingAppID())
	);

	// chart
	this.chartGraphics.lineStyle(50, 0xdddddd, 1);
	this.chartGraphics.moveTo(posX, posY);
	this.chartGraphics.lineTo(posX, posY - Chart.CHART_HEIGHT * ( (bestRecord - min) / (max - min) ));
}

Chart.drawText = function(posX, posY, text, fontStyle) {
	var textObject = game.add.text(
		posX, posY,
		text, fontStyle
	);
	textObject.anchor.set(0.5);
	textObject.stroke = "#333";
	textObject.strokeThickness = 3;

	return textObject;
}

Chart.CHART_COUNT			= 7;

Chart.CHART_LINE_START_X	= 230;
Chart.CHART_LINE_Y			= 370;

Chart.CHART_GAP_PX			= 120;
Chart.CHART_HEIGHT			= 120;

Chart.CHART_GRAPH_OFFSET_X	= 50;
Chart.CHART_DATE_OFFSET_Y	= 20;
Chart.CHART_RECORD_OFFSET_Y	= 30;

Chart.DATE_POS_X			= Chart.CHART_LINE_START_X + 50;
Chart.RECORD_POS_X			= Chart.DATE_POS_X + 100;
Chart.GRADE_POS_X			= Chart.DATE_POS_X + 200;
Chart.SUBJECT_POS_X			= Chart.DATE_POS_X + 400;


function ChartRecord(index) {
	this.date = new DateData(index);
	this.record = new RecordData(index);
	this.grade = new GradeData(index);
	this.subject = new SubjectData(index);
}


ChartRecord.getPosX = function(columnName) {
	var posX = Chart.CHART_LINE_START_X;
	switch(columnName) {
		case "date":
		posX = Chart.DATE_POS_X;
		break;

		case "record":
		posX = Chart.RECORD_POS_X;
		break;

		case "grade":
		posX = Chart.GRADE_POS_X;
		break;

		case "subject":
		posX = Chart.SUBJECT_POS_X;
		break;
	}

	return posX;
}

ChartRecord.getPosY = function(rowIndex) {
	var offsetY = 30;
	return Chart.CHART_LINE_Y + offsetY + ChartRecord.GAP_RECORD_Y * rowIndex;
}

ChartRecord.GAP_RECORD_Y	= 40;



function DateData(index) {
	var fontStyle = { font: "28px Arial", fill: "#fff", align: "center" };
	this.dateText = Chart.drawText(ChartRecord.getPosX("date"), ChartRecord.getPosY(index), "월/일", fontStyle);
}

function RecordData(index) {
	var fontStyle = { font: "28px Arial", fill: "#fff", align: "center" };
	this.dateText = Chart.drawText(ChartRecord.getPosX("record"), ChartRecord.getPosY(index), "350 점", fontStyle);
}

function GradeData(index) {
	var fontStyle = { font: "28px Arial", fill: "#fff", align: "center" };
	this.dateText = Chart.drawText(ChartRecord.getPosX("grade"), ChartRecord.getPosY(index), "B", fontStyle);
}

function SubjectData(index) {
	var fontStyle = { font: "28px Arial", fill: "#fff", align: "center" };
	this.dateText = Chart.drawText(ChartRecord.getPosX("subject"), ChartRecord.getPosY(index), "ITQ 파워포인트", fontStyle);
}