/**
    * Copyright 2011 The Kuali Foundation Licensed under the Educational Community
    * License, Version 2.0 (the "License"); you may not use this file except in
    * compliance with the License. You may obtain a copy of the License at
    *
    * http://www.osedu.org/licenses/ECL-2.0
    *
    * Unless required by applicable law or agreed to in writing, software
    * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations under
   * the License.
   */
  package org.kuali.mobility.events.controllers;
  
  import java.text.DateFormat;
  import java.text.ParseException;
  import java.text.SimpleDateFormat;
  import java.util.Date;
  import java.util.List;
  import java.util.Locale;
  import java.util.TimeZone;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  import javax.servlet.http.HttpServletRequest;
  import org.codehaus.jettison.json.JSONArray;
  import org.kuali.mobility.events.entity.GoogleCalendarSynchronizationStatus;
  import org.kuali.mobility.events.entity.UserAccount;
  import org.kuali.mobility.events.service.Event;
  import org.kuali.mobility.events.service.EventsService;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.annotation.Qualifier;
  import org.springframework.context.ApplicationContext;
  import org.springframework.context.support.ClassPathXmlApplicationContext;
  import org.springframework.stereotype.Controller;
  import org.springframework.ui.Model;
  import org.springframework.validation.BindingResult;
  import org.springframework.web.bind.annotation.ModelAttribute;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestMethod;
  import org.springframework.web.bind.annotation.RequestParam;
  
  @Controller
  @RequestMapping("/calendar")
  public class CalendarController {
  
      @Autowired
      @Qualifier("eventService")
      private EventsService eventsService;
  
      @RequestMapping(method = RequestMethod.GET)
      public String home(HttpServletRequest request, Model uiModel, @RequestParam(required = false) String date) throws Exception {
          return week(request, uiModel, date);
      }
  
      @RequestMapping(value = "/week", method = RequestMethod.GET)
      public String week(HttpServletRequest request, Model uiModel, @RequestParam(required = false) String date) {
          return "calendar/week";
      }
  
      @RequestMapping(value = "/addEvent", method = RequestMethod.POST)
      public void addEvent(Model uiModel, @ModelAttribute("event") Event event, BindingResult result, HttpServletRequest request) {
          String user = getUser();
          String startTime = event.getStartTime();
          String endTime = event.getEndTime();
          String estStartTime = getESTTimeFromLocalTime(startTime);
          String estEndTime = getESTTimeFromLocalTime(endTime);
  
          String timeZoneId = getTimeZoneID();
          eventsService.addEvent(estStartTime, estEndTime,
                  event.getTitle(), event.getEventBody(), estStartTime, user, timeZoneId);
      }
  
      @RequestMapping(value = "/updateEvent", method = RequestMethod.POST)
      public void updateEvent(Model uiModel, @ModelAttribute("event") Event event, BindingResult result, HttpServletRequest request) {
          String user = getUser();
          String startTime = event.getStartTime();
          String endTime = event.getEndTime();
          String estStartTime = getESTTimeFromLocalTime(startTime);
          String estEndTime = getESTTimeFromLocalTime(endTime);
          eventsService.updateEvent(event.getEventId(), estStartTime, estEndTime,
                  event.getTitle(), event.getEventBody(), estStartTime, user);
      }
  
      @RequestMapping(value = "/deleteEvent", method = RequestMethod.POST)
      public void deleteEvent(Model uiModel, @ModelAttribute("event") Event event, BindingResult result, HttpServletRequest request) {
          eventsService.deleteEvent(event.getEventId());
      }
  
      @RequestMapping(value = "/getEvents", method = RequestMethod.POST)
      public String getEvents(Model uiModel, @ModelAttribute("event") Event event, BindingResult result, HttpServletRequest request) {
          String startDateStr = request.getParameter("startdate");
          String endDateStr = request.getParameter("enddate");
          List eventList = eventsService.getEvents(startDateStr, endDateStr);
          JSONArray arr = new JSONArray(eventList);
          uiModel.addAttribute("eventList", arr);
          return "calendar/getevent";
      }
  
     @RequestMapping(value = "/synchronizeWithGoogleeAccount", method = RequestMethod.POST)
     public String synchronizeWithGoogleeAccount(Model uiModel, @ModelAttribute("userAccount") UserAccount userAccount,
             BindingResult result, HttpServletRequest request) {
         ApplicationContext ctx = new ClassPathXmlApplicationContext("EventsSpringBeans.xml");
         String synchronizationStatus = eventsService.synchronizeWithGoogleAccount(userAccount.getEmailId(), userAccount.getPassword());
         //The eventsService.synchronizeWithGoogleeAccount method returns the synchronization status.
         //To display an appropriate message (about success or failure) on the screen,
         //read the message resource bundle, using the synchronizationStatus as the key
         String synchronizationStatusMessage = ctx.getMessage(synchronizationStatus, null, " ", Locale.ENGLISH);
 
         uiModel.addAttribute("synchronizationStatus", synchronizationStatusMessage);
         return "redirect:/calendar";
     }
 
     public String getUser() {
         String user = "nurul";
         return user;
     }
 
     public String getESTTimeFromLocalTime(String time) {
         String strFirst = time.substring(0, 28);
         String strLast = time.substring(28, 33);
         String startTime = strFirst + " " + strLast;
 
         final String OLD_FORMAT = "EEE MMM dd yyyy HH:mm:ss z Z";
         SimpleDateFormat sdf = new SimpleDateFormat(OLD_FORMAT);
         Date eventDate = null;
         try {
             eventDate = sdf.parse(startTime);
         } catch (ParseException ex) {
             Logger.getLogger(CalendarController.class.getName()).log(Level.SEVERE, null, ex);
         }
         DateFormat formatter = new SimpleDateFormat(OLD_FORMAT);
         formatter.setTimeZone(TimeZone.getTimeZone("EST"));
         return formatter.format(eventDate);
     }
 
     public String getTimeZoneID() {
         DateFormat estDf = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL);
         estDf.setTimeZone(TimeZone.getTimeZone("EST"));
         return estDf.getTimeZone().getID();
     }
 }