package compbio.controllers;

import java.util.Calendar;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import compbio.beans.Total;
import compbio.beans.TotalJobsStatisticBean;
import compbio.cassandra.DateFormatter;
import compbio.cassandra.readers.DailyStatisticsReader;

/**
 * The main system controller with most general functionality (home page, login
 * and logout pages)
 * 
 * @author Alexander Sherstnev
 * @author Natasha Sherstneva
 * 
 * @version 1.0
 * @since Dec 2013
 */
@Controller
public class MainController extends BasicController {

	/**
	 * Form the project home page
	 * 
	 * @param model
	 *            MVC model object
	 * 
	 * @return JSP template for the page
	 */
	@RequestMapping(value = "/index", method = RequestMethod.GET)
	public String printPublicHome(ModelMap model) {
		model.addAttribute("username", getPrincipalName());
		model = getStatistics(model);
		if (isUserRole())
			return "home";
		return "public";
	}

	/**
	 * Form login page
	 * 
	 * @param model
	 *            MVC model object
	 * 
	 * @return JSP template for the page
	 */
	@RequestMapping(value = "/login", method = RequestMethod.GET)
	public String login(ModelMap model) {
		return "login";
	}

	/**
	 * Form a page with failed login
	 * 
	 * @param model
	 *            MVC model object
	 * 
	 * @return JSP template for the page
	 */
	@RequestMapping(value = "/loginfailed", method = RequestMethod.GET)
	public String loginerror(ModelMap model) {
		model.addAttribute("error", "Wrong user name or password");
		return "login";
	}

	/**
	 * Form a page after log out
	 * 
	 * @param model
	 *            MVC model object
	 * 
	 * @return JSP template for the page
	 */
	@RequestMapping(value = "/logout", method = RequestMethod.GET)
	public String logout(ModelMap model) {
		model = getStatistics(model);
		return "public";
	}

	/**
	 * Form a page with denial of service
	 * 
	 * @param model
	 *            MVC model object
	 * 
	 * @return JSP template for the page
	 */
	@RequestMapping(value = "/denied", method = RequestMethod.GET)
	public String denied(ModelMap model) {
		model.put("username", getPrincipalName());
		return "support/Denied";
	}

	/**
	 * Form the project home page
	 * 
	 * @param model
	 *            MVC model object
	 * 
	 * @return JSP template for the page
	 */
	@RequestMapping(value = "/home", method = RequestMethod.GET)
	public String printHome(ModelMap model) {
		model.addAttribute("username", getPrincipalName());
		model = getStatistics(model);
		return "home";
	}

	/**
	 * collect job execution statiustics for the last 7 days.
	 * 
	 * @param model
	 *            MVC model object
	 * 
	 * @return the the same model, but with additional parameters with the job
	 *         statistics
	 */
	private ModelMap getStatistics(ModelMap model) {
		int ndays = 7;
		model.addAttribute("ndays", ndays);

		Calendar cal = Calendar.getInstance();
		String date2 = cal.get(Calendar.YEAR) + "/" + (cal.get(Calendar.MONTH) + 1) + "/" + cal.get(Calendar.DAY_OF_MONTH);
		long longDate2 = DateFormatter.DateParsing(date2, formaterYYMMDD);
		cal.add(Calendar.DATE, -ndays);
		String date1 = cal.get(Calendar.YEAR) + "/" + (cal.get(Calendar.MONTH) + 1) + "/" + cal.get(Calendar.DAY_OF_MONTH);
		long longDate1 = DateFormatter.DateParsing(date1, formaterYYMMDD);

		DailyStatisticsReader reader = new DailyStatisticsReader();
		TotalJobsStatisticBean res = reader.query(longDate1, longDate2);
		Total total = res.getWholeTotal();
		model.addAttribute("total", total.getTotal());
		model.addAttribute("totalOK", total.getTotalOK());
		model.addAttribute("totalTimeout", total.getTotalOK());
		model.addAttribute("totalError", total.getTotalError());
		model.addAttribute("totalStopped", total.getTotalStopped());
		return model;
	}

}