/**
    * Copyright 2011-2012 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.library.controllers;
  
  import java.text.DateFormat;
  import java.text.SimpleDateFormat;
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  import java.util.Map;
  
  import javax.servlet.http.HttpServletRequest;
  
  import org.apache.log4j.Logger;
  import org.kuali.mobility.library.entity.Library;
  import org.kuali.mobility.library.entity.LibraryContactDetail;
  import org.kuali.mobility.library.entity.LibraryHour;
  import org.kuali.mobility.library.entity.LibraryHourSet;
  import org.kuali.mobility.library.entity.LibraryPermissions;
  import org.kuali.mobility.library.service.LibraryService;
  import org.kuali.mobility.security.user.api.User;
  import org.kuali.mobility.shared.Constants;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.beans.factory.annotation.Qualifier;
  import org.springframework.stereotype.Controller;
  import org.springframework.ui.Model;
  import org.springframework.web.bind.annotation.PathVariable;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestMethod;
  import org.springframework.web.bind.annotation.RequestParam;
  
  /**
   * Controller for Library
   * @author Kuali Mobility Team (mobility.collab@kuali.org)
   * @since 2.3.0
   */
  @Controller
  @RequestMapping("/library")
  public class LibraryControllerImpl {
  
  	/** 
  	 * A reference to a Logger 
  	 */
  	private static final Logger LOG = Logger.getLogger( LibraryControllerImpl.class );
  
  	/**
  	 * A reference to the <code>service</code>
  	 */
  	@Autowired
  	@Qualifier("libraryService")
  	private LibraryService service;
  
  
  	/**
  	 * Sets the reference to the <code>service</code>
  	 */
  	public void setService(LibraryService service) {
  		this.service = service;
  	}
  
  	
  	/**
  	 * The main menu for the library tool
  	 */
  	@RequestMapping(method = RequestMethod.GET)
  	public String index() {
  		return "library/index";
  	}
  
  	/**
  	 *	Used to retrieve libraries and then displays the menu selection for the Library Contact Details selection screen 
  	 */
  	@RequestMapping(value = "/viewContact", method = RequestMethod.GET)
  	public String viewContact(
  			HttpServletRequest request,
  			Model uiModel) {
  		
  		Map<String, List<Library>> libraryMap = this.service.getLibrariesByCampus();
  		List<String> campusCodes = this.service.getCampusWithLibraries();
  		
  		uiModel.addAttribute("campusCodes" , campusCodes);
  		uiModel.addAttribute("libraryMap" , libraryMap);
  		uiModel.addAttribute("actionPage", "viewContact");
  		return "library/selectLibrary";
  	}
  
 	
 	/**
 	 *	Display the Library contact details for the selected library 
 	 */
 	@RequestMapping(value = "/viewContact/{id}", method = RequestMethod.GET)
 	public String viewContact(
 			HttpServletRequest request,
 			@PathVariable(value="id") int libraryId,
 			Model uiModel) {
 		
 		User user = (User) request.getSession().getAttribute(Constants.KME_USER_KEY);
 		boolean isAdmin = LibraryPermissions.ADMIN_EXPRESSION.evaluate(user);
 		
 		// Get lib id from get request. Retrieve Library record from DB.
 		Library library = service.getLibrary(libraryId);
 		LibraryContactDetail lcd = library.getLibraryContactDetail();
 
 		uiModel.addAttribute("libraryId", libraryId);
 		uiModel.addAttribute("library", library);
 		uiModel.addAttribute("libraryContactDetail", lcd);
 		uiModel.addAttribute("isAdmin", isAdmin);
 		return "library/viewContact";
 	}
 	
 	/**
 	 * Admin page to allow users to edit contact details of a specific library
 	 */
 	@RequestMapping(value = "/editContact/{id}", method = RequestMethod.GET)
 	public String editContact(
 			HttpServletRequest request,
 			@PathVariable(value = "id") int libraryId,
 			Model uiModel){
 		
 		User user = (User) request.getSession().getAttribute(Constants.KME_USER_KEY);
 		
 		// If the user is not admin take him away from here
 		if (!LibraryPermissions.ADMIN_EXPRESSION.evaluate(user)){
 			return "redirect:/library/viewContact/"+libraryId;
 		}
 		
 		Library library = service.getLibrary(libraryId);
 		uiModel.addAttribute("contactDetail", library.getLibraryContactDetail());
 		uiModel.addAttribute("libraryId", libraryId);
 		return "library/editContact";
 	}
 	
 	
 	/**
 	 * Invoked when the user submits the form to edit the contact details of a library
 	 */
 	@RequestMapping(value = "/editContact/{id}", method = RequestMethod.POST)
 	public String editContact(
 			HttpServletRequest request,
 			@PathVariable(value="id") long libraryId,
 			@RequestParam(value="telephone") String telephone,
 			@RequestParam(value="fax") String fax,
 			@RequestParam(value="generalInfoDesk") String generalInfoDesk,
 			@RequestParam(value="email") String email,
 			@RequestParam(value="postalAddress") String postalAddress,
 			@RequestParam(value="physicalAddress") String physicalAddress,
 			@RequestParam(value="latitude") String latitude,
 			@RequestParam(value="longitude") String longitude,
 			Model uiModel){
 		
 		User user = (User) request.getSession().getAttribute(Constants.KME_USER_KEY);
 
 		// If the user is not admin take him away from here
 		if (!LibraryPermissions.ADMIN_EXPRESSION.evaluate(user)){
 			return "redirect:/library/viewContact/"+libraryId;
 		}
 		
 		Library library = service.getLibrary(libraryId);
 		LibraryContactDetail lcd = library.getLibraryContactDetail();
 		if (lcd == null){
 			lcd = new LibraryContactDetail();
 		}
 		
 		lcd.setEmail(email);
 		lcd.setFax(fax);
 		lcd.setGeneralInfoDesk(generalInfoDesk);
 		lcd.setLatitude(latitude);
 		lcd.setLongitude(longitude);
 		lcd.setPhysicalAddress(fixNewLines(physicalAddress));
 		lcd.setPostalAddress(fixNewLines(postalAddress));
 		lcd.setTelephone(telephone);
 		
 		library = service.saveLibrary(library);
 		
 		uiModel.addAttribute("library", library);
 		return "redirect:/library/viewContact/"+libraryId;
 	}
 	
 	
 	/**
 	 *	Used to retrieve libraries and then displays the menu selection for the Library operating hours selection screen 
 	 */
 	@RequestMapping(value = "/viewHours", method = RequestMethod.GET)
 	public String viewHours(
 			HttpServletRequest request,
 			Model uiModel) {
 		
 		Map<String, List<Library>> libraryMap = this.service.getLibrariesByCampus();
 		List<String> campusCodes = this.service.getCampusWithLibraries();
 		// TODO get the campus objects for these campuses to get the campus names
 		
 		uiModel.addAttribute("campusCodes" , campusCodes);
 		uiModel.addAttribute("libraryMap" , libraryMap );
 		uiModel.addAttribute("actionPage", "viewHours");
 		return "library/selectLibrary";
 	}
 	
 	
 	/**
 	 * Allows the user to view the hours for a library
 	 */
 	@RequestMapping(value = "/viewHours/{id}", method = RequestMethod.GET)
 	public String viewHours(
 			HttpServletRequest request,
 			@PathVariable(value = "id") int libraryId,
 			Model uiModel) {
 		
 		
 		User user = (User) request.getSession().getAttribute(Constants.KME_USER_KEY);
 		boolean isAdmin = LibraryPermissions.ADMIN_EXPRESSION.evaluate(user);
 		
 		Library library = service.getLibrary(libraryId);
 		List<LibraryHourSet> hourSets = service.getLibraryHourSets(libraryId);
 		List<LibraryHourSet> displayHourSets = new ArrayList<LibraryHourSet>(hourSets.size());
 		for (LibraryHourSet lhs : hourSets){
 			displayHourSets.add(service.getDisplayableHoursSet(lhs));
 		}
 		// Based on Library record get Library Contact Details
 		LibraryContactDetail lcd = library.getLibraryContactDetail();
 		
 		uiModel.addAttribute("hourSets", displayHourSets);
 		uiModel.addAttribute("library", library);
 		uiModel.addAttribute("libraryContactDetails", lcd);
 		uiModel.addAttribute("isAdmin", isAdmin);
 		return "library/viewHours";
 	}
 	
 	
 	/**
 	 * Admin page to edit the hours
 	 */
 	@RequestMapping(value="/editHours/{id}" , method = RequestMethod.GET)
 	public String editHours(
 			HttpServletRequest request,
 			@PathVariable(value="id") long libraryId,
 			Model uiModel){
 		
 		User user = (User) request.getSession().getAttribute(Constants.KME_USER_KEY);
 		
 		// If the user is not admin take him away from here
 		if (!LibraryPermissions.ADMIN_EXPRESSION.evaluate(user)){
 			return "redirect:/library/viewHours/"+libraryId;
 		}
 		
 		// Get lib id from get request. Retrieve Library record from DB.
 		Library library = service.getLibrary(libraryId);
 		List<LibraryHourSet> hourSets = service.getLibraryHourSets(libraryId);
 		
 		uiModel.addAttribute("library", library);
 		uiModel.addAttribute("libraryId", libraryId);
 		uiModel.addAttribute("hourSets", hourSets);
 		
 		return "library/editHours";
 		
 	}
 	
 	/**
 	 * Invoked when the user saves edited hours.
 	 */
 	@RequestMapping(value="/editHours/{id}" , method = RequestMethod.POST)
 	public String editHours(
 			HttpServletRequest request,
 			@PathVariable(value="id") int libraryId){
 		
 		User user = (User) request.getSession().getAttribute(Constants.KME_USER_KEY);
 		
 		// If the user is not admin take him away from here
 		if (!LibraryPermissions.ADMIN_EXPRESSION.evaluate(user)){
 			return "redirect:/library/viewHours/"+libraryId;
 		}
 		
 		List<LibraryHourSet> hourSets = service.getLibraryHourSets(libraryId);
 		LibraryHourSet hourSet;
 		List<LibraryHour> hours;
 		LibraryHour hour;
 
 		for (int hsIdx = 0 ; hsIdx < hourSets.size() ; hsIdx++){
 			hourSet = hourSets.get(hsIdx);
 			hours = hourSet.getHours();
 			
 			for(int hIdx = 0 ; hIdx < hours.size() ; hIdx++){
 				hour = hours.get(hIdx);
 				int hourSetIndex = hsIdx + 1;
 				int hourIndex = hIdx + 1;
 				if( request.getParameter("s"+ hourSetIndex +"h"+ hourIndex + "-closed") == null){
 					hour.setFromTime(this.stringToDate("HH:mm:ss" , request.getParameter("s"+ hourSetIndex +"h"+ hourIndex +"-fromTime")));
 					hour.setToTime(this.stringToDate("HH:mm:ss" , request.getParameter("s"+ hourSetIndex +"h"+ hourIndex +"-toTime")));
 				}else{
 					hour.setFromTime(null);
 					hour.setToTime(null);
 				}
 				hours.set(hIdx , hour);
 			}
 			hourSet.setHours(hours);
 			service.saveLibraryHourSets(hourSet);
 		}
 		
 		return "redirect:/library/viewHours/"+libraryId;
 	}
 	
 
 	/**
 	 * Replace new lines with HTML friendly versions
 	 * @param string
 	 * @return
 	 */
 	private static final String fixNewLines(String string){
 		string = string.replace("\r\n", "\n");
 		string = string.replace("\r", "\n");
 		string = string.replace("\n", "<br/>");
 		return string;
 	}
 	
 	private Date stringToDate(String format, String time ){
 		Date date = null;
 		DateFormat formatter = new SimpleDateFormat(format);
 		try{
 			date = formatter.parse(time+":00");
 		}catch(Exception e){
 			LOG.error(">>>> stringToDate : "+e.getMessage());
 		}
 		return date;
 	}
 }