/*Copyright (C) 2004-... Stephane Gauchet for Hyphonem
   
    This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
   
    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
   
    You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    
    Written by St�phane Gauchet
   mail me at : sgauchet@free.fr
   */
  package fr.hyphonem.conges.actions;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.InputStreamReader;
  import java.util.Calendar;
  import java.util.Hashtable;
  import java.util.Iterator;
  import java.util.Vector;
  import java.util.logging.Logger;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.http.HttpSession;
  
  import org.apache.struts.action.Action;
  import org.apache.struts.action.ActionError;
  import org.apache.struts.action.ActionErrors;
  import org.apache.struts.action.ActionForm;
  import org.apache.struts.action.ActionForward;
  import org.apache.struts.action.ActionMapping;
  
  import fr.hyphonem.conges.AccessData;
  import fr.hyphonem.conges.AccessDataMng;
  import fr.hyphonem.conges.CheckData;
  import fr.hyphonem.conges.data.EmployeeData;
  import fr.hyphonem.conges.data.ParamsData;
  import fr.hyphonem.conges.data.ReasonData;
  import fr.hyphonem.conges.data.UserData;
  import fr.hyphonem.conges.forms.LoginForm;
  
  /**
   * @author Stephane Gauchet pour Hyphonem
   */
  public class LoginAction extends Action {
  
  	public ActionForward execute(ActionMapping mapping, ActionForm form,
  			HttpServletRequest request, HttpServletResponse response)
  			throws Exception {
  		HttpSession session = request.getSession();
  		String dataDirPath = session.getServletContext().getRealPath(
  				"WEB-INF/data");
  		// put in session the real path to all personal and app data, will be
  		// used in the whole session app
  		session.setAttribute("dataDirPath", dataDirPath);
  		AccessData ad = new AccessDataMng().getInstance(dataDirPath);
  
  		ActionErrors errors = new ActionErrors();
  		LoginForm loginForm = (LoginForm) form;
  		UserData user = null;
  
  		// verification du couple login/password entre
  		String login = loginForm.getLogin();
  		String password = loginForm.getPassword();
  
  		// lecture du fichier XML des users
  		try {
  			user = ad.searchUser(login.toUpperCase(), password.toUpperCase());
  		} catch (Exception e) {
  			// System.out.println(e.getMessage());
  			user = null;
  		}
  		if (user == null) {
  			errors.add("login.or.passwd.invalid", new ActionError(
  					"login.or.passwd.invalid"));
  		} else {
  			// user logge
  			session.setAttribute("user", user);
  
  			// delete all previous planning images generated by this user and
  			// export files of his team (or none) generated at least the day
  			// before
  			String path = request.getSession().getServletContext().getRealPath(
  					File.separator);
  			String endFileName = "_" + user.getNom() + ".jpeg";
  			String partialExportName = ".csv";
  			File file = new File(path);
  			File[] lfiles = file.listFiles();
  			for (int i = 0; i < lfiles.length; i++) {
  				File fichier = lfiles[i];
  				if (fichier.getName().endsWith(endFileName)) {
  					fichier.delete();
  				}
  
  				Calendar cal = Calendar.getInstance();
  				cal.add(Calendar.DATE, -1);
 				if (fichier.getName().endsWith(partialExportName)
 						&& fichier.lastModified() <= cal.getTimeInMillis()) {
 					fichier.delete();
 				}
 			}
 
 			// on charge la liste des employes
 			Vector employees = ad.readEmployees();
 
 			// on cree un employe a partir du user logge
 			EmployeeData employee = new EmployeeData();
 			employee.setNom(user.getNom());
 			employee.setPrenom(user.getPrenom());
 			// employee.setPays((String)session.getServletContext().getAttribute("country"));
 
 			boolean isUserAlsoAnEmployee = false;
 			int indexEmployee = 0;
 
 			// on recherche dans la liste des employes le user logge
 			for (int i = 0; i < employees.size(); i++) {
 				EmployeeData emp = (EmployeeData) employees.get(i);
 
 				if (emp.getNom().equals(employee.getNom())
 						&& emp.getPrenom().equals(employee.getPrenom())) {
 					isUserAlsoAnEmployee = true;
 					indexEmployee = i;
 					employee.setPays(emp.getPays());
 					employee.setTeam(emp.getTeam());
 					employee.setEntryDate(emp.getEntryDate());
 					employee.setDayoff1(emp.isDayoff1());
 					employee.setDayoff2(emp.isDayoff2());
 					employee.setDayoff3(emp.isDayoff3());
 					employee.setDayoff4(emp.isDayoff4());
 					employee.setDayoff5(emp.isDayoff5());
 					employee.setDayoff6(emp.isDayoff6());
 					employee.setDayoff7(emp.isDayoff7());
 				}
 			}
 
 			if (isUserAlsoAnEmployee) {
 				// employe par defaut = user logge
 				Logger.getAnonymousLogger().info(
 						"employee is set to logged user");
 			} else {
 				// employe par defaut = premier de la liste
 				employee = new EmployeeData();
 				employee = (EmployeeData) employees.get(0);
 			}
 
 			session.setAttribute("indexEmployee", "" + indexEmployee);
 			session.setAttribute("employee", employee);
 
 			errors = CheckData.check(request, employee, errors);
 			if (errors.isEmpty()) {
 				Vector params = (Vector) session.getServletContext()
 						.getAttribute("params");
 
 				if (params == null) {
 					params = new Vector();
 
 					File fileParams = new File(dataDirPath + File.separator
 							+ "params.xml");
 
 					if (fileParams.exists()) {
 						try {
 							params = ad.readParams();
 						} catch (Exception e) {
 							throw new ServletException(e.getMessage());
 						}
 					} else {
 						Vector reasons = (Vector) session.getServletContext()
 								.getAttribute("reasons");
 
 						for (int z = 0; z < reasons.size(); z++) {
 							ReasonData reason = (ReasonData) reasons.get(z);
 							String reasonName = reason.getNom();
 							ParamsData pd = new ParamsData();
 							pd.setReason(reasonName);
 							pd.setDateDebut("");
 							pd.setDateFin("");
 							pd.setNbJours("");
 							pd.setType("progressif");
 							params.add(pd);
 						}
 					}
 
 					session.getServletContext().setAttribute("params", params);
 				}
 
 				if (session.getServletContext().getAttribute("country") == null) {
 					String country = ad.readParamPays();
 					session.getServletContext()
 							.setAttribute("country", country);
 				}
 				if (session.getServletContext().getAttribute("server") == null) {
 					String server = ad.readParamMail();
 					session.getServletContext().setAttribute("server", server);
 				}
 
 				if (session.getServletContext().getAttribute("periods") == null) {
 					Vector periods = ad.readParamPeriods();
 					session.getServletContext()
 							.setAttribute("periods", periods);
 				}
 
 				// on charge la liste des employes si elle n'est pas deja en
 				// application
 				if (session.getServletContext().getAttribute("employees") == null) {
 					session.getServletContext().setAttribute("employees",
 							employees);
 				}
 
 				// on charge la liste des raisons d'absences si elle n'est pas
 				// deja en application
 				if (session.getServletContext().getAttribute("reasons") == null) {
 					Vector reasons = ad.readReasons();
 					session.getServletContext()
 							.setAttribute("reasons", reasons);
 				}
 				if (session.getServletContext().getAttribute("teams") == null) {
 					Iterator teams = ad.readTeams();
 					Vector vteams = new Vector();
 					while (teams.hasNext()) {
 						String team = (String) teams.next();
 						if (team != null && !team.equals("")) {
 							vteams.add(team);
 						}
 					}
 					session.getServletContext().setAttribute("teams", vteams);
 				}
 				if (session.getServletContext().getAttribute("hcountry") == null) {
 					String pathToCountry = dataDirPath + File.separator
 							+ "country.txt";
 					File countryFile = new File(pathToCountry);
 					Hashtable hCountry = new Hashtable();
 
 					if (countryFile.exists()) {
 						FileInputStream fis = new FileInputStream(countryFile);
 						BufferedReader dis = new BufferedReader(
 								new InputStreamReader(fis));
 						String ligne = dis.readLine();
 						// 1ere ligne blanche
 						hCountry.put("", "");
 
 						while (ligne != null) {
 							String country = ligne.substring(0, 48);
 							// System.out.println("country = "+country);
 							String code = ligne.substring(48);
 							// System.out.println("code = "+code);
 							hCountry.put(code, country);
 							ligne = dis.readLine();
 						}
 					}
 
 					session.getServletContext().setAttribute("hcountry",
 							hCountry);
 				}
 				if (user.isModif()) {
 					Vector listOfPendingEvents = ad.readPendingEvents(user,
 							user.getTeam());
 					if (listOfPendingEvents.size() > 0) {
 						return mapping.findForward("validating");
 					}
 				}
 			}
 		}
 
 		if (!errors.isEmpty()) {
 			saveErrors(request, errors);
 			return mapping.getInputForward();
 		}
 
 		return mapping.findForward("success");
 	}
 }