package chart;

import java.awt.BasicStroke;
import java.awt.Color;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Random;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.time.Hour;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.XYDataset;
import org.jfree.ui.RectangleInsets;

@WebServlet("/ChartServlet")
public class ChartServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	private Random rand = new Random();

	public ChartServlet() {
		super();
	}

	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("image/png");

		OutputStream outputStream = response.getOutputStream();

		XYDataset dataset = createDataset();
		JFreeChart chart = getChart(dataset);
		int width = 1550;
		int height = 700;
		ChartUtilities.writeChartAsPNG(outputStream, chart, width, height);
	}

	public JFreeChart getChart(XYDataset dataset) {

		JFreeChart chart = ChartFactory.createTimeSeriesChart(
				"JFreeeChartServlet", // title
				"Date", // x-axis label
				"Price", // y-axis label
				dataset, // data
				true, // create legend?
				true, // generate tooltips?
				false // generate URLs?
				);

		chart.setBackgroundPaint(Color.white);
		XYPlot plot = (XYPlot) chart.getPlot();
		plot.setBackgroundPaint(Color.lightGray);
		plot.setDomainGridlinePaint(Color.white);
		plot.setRangeGridlinePaint(Color.white);
		plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
		plot.setDomainCrosshairVisible(true);
		plot.setRangeCrosshairVisible(true);
		XYItemRenderer r = plot.getRenderer();
		if (r instanceof XYLineAndShapeRenderer) {
			XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) r;
			renderer.setBaseShapesVisible(true);
			renderer.setBaseShapesFilled(true);
		}
		DateAxis axis = (DateAxis) plot.getDomainAxis();
		axis.setDateFormatOverride(new SimpleDateFormat("dd-MMM-yyyy"));
		return chart;
	}

	private XYDataset createDataset() {
		
		double randDouble;
		int checkDay;
		TimeSeries s1 = new TimeSeries("Line1", Hour.class);

		for (int y = 2013; y < 2014; y++) {
			for (int m = 1; m <= 6; m++) {
				checkDay = checkDaytoMouth(m,y);
				for (int d = 1; d <= checkDay; d++) {
					for (int h = 0; h <= 24; h++) {

						randDouble = rand.nextDouble() * 100 + 100;

						s1.add(new Hour(h, d, m, y), randDouble);
					}
				}
			}
		}
		TimeSeriesCollection dataset = new TimeSeriesCollection();
		dataset.addSeries(s1);
		dataset.setDomainIsPointsInTime(false);

		return dataset;
	}

	private int checkDaytoMouth(int month,int year) {
		Calendar calendar= GregorianCalendar.getInstance();
		calendar.set(Calendar.YEAR, year);
		calendar.set(Calendar.MONTH, month-1);
		int dayOfMonth= calendar.getActualMaximum(Calendar.DATE);

	return dayOfMonth;
	}

}

renderer.setBaseShapesVisible(false);