package dk.thoerup.traininfoservice;


import java.io.IOException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

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


@WebServlet(urlPatterns={"/SavedStatistics"})
public class SavedStatistics extends HttpServlet {
	private static final long serialVersionUID = 1L;
	
	
	protected SavedStatBean convertRow(ResultSet res) throws SQLException {
		SavedStatBean bean = new SavedStatBean();

		bean.label = res.getString(1);
		bean.station = res.getString(2);
		bean.location = res.getString(3);
		bean.name = res.getString(4);
		bean.favorites = res.getString(5);
		bean.departure = res.getString(6);
		bean.depcache = res.getString(7);
		bean.deperror = res.getString(8);
		bean.timetable = res.getString(9);
		bean.timecache = res.getString(10);
		bean.timeerror = res.getString(11);
		
		return bean;
		
	}
	
	
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		
		Connection conn = null;
		try {
			conn = DBConnection.getConnection();
			Statement stmt = conn.createStatement();
			List<SavedStatBean> stats = new ArrayList<SavedStatBean>();
			
			
			String sqlAvg = "SELECT count(*) AS count, round(avg(location+name+favorites),1) AS station, round(avg(location),1) as location, round(avg(name),1) as name, round(avg(favorites),1) as favorites, " +
			"round(avg(departure),1) as departure, round(avg(depcache),1) as depcache, round(avg(deperror),1) as deperror, " +
			"round(avg(timetable),1) as timetable, round(avg(timecache),1) as timecache, round(avg(timeerror),1) as timeerror " +
			"FROM trainstatistics";
			
			ResultSet resAvg = stmt.executeQuery(sqlAvg);
			resAvg.next();
			SavedStatBean avgBean = convertRow(resAvg);
			
			////////////////////////////////////////////////
			
			String SQL = "SELECT statisticsdate, location+name+favorites AS station, location,name,favorites,departure,depcache,deperror,timetable,timecache,timeerror " +
			"FROM trainstatistics ORDER BY statisticsdate DESC limit 14";
			
			
			ResultSet res = stmt.executeQuery(SQL);
			
			
		
			
			while (res.next()) {
				SavedStatBean bean = convertRow(res);								
				stats.add(bean);
				
			}

			conn.close();			
			
			
			request.setAttribute("avg", avgBean);
			request.setAttribute("stats", stats);
			request.getRequestDispatcher("/savedstatistics.jsp").forward(request, response);
			
			
		} catch (SQLException e) {
			try { 
				if (conn != null) conn.close();
			} catch (SQLException se) {}
			throw new ServletException(e);
		}
	}

}