/*

  * Copyright 2006-2011 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.opensource.org/licenses/ecl2.php

  *

  * 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.rice.kew.notes.web;

 import org.apache.commons.lang.StringUtils;

 import org.apache.struts.action.ActionForm;

 import org.apache.struts.action.ActionForward;

 import org.apache.struts.action.ActionMapping;

 import org.apache.struts.action.ActionMessages;

 import org.apache.struts.upload.FormFile;

 import org.kuali.rice.core.framework.services.CoreFrameworkServiceLocator;

 import org.kuali.rice.core.util.RiceConstants;

 import org.kuali.rice.kew.notes.Attachment;

 import org.kuali.rice.kew.notes.CustomNoteAttribute;

 import org.kuali.rice.kew.notes.Note;

 import org.kuali.rice.kew.notes.service.NoteService;

 import org.kuali.rice.kew.routeheader.DocumentRouteHeaderValue;

 import org.kuali.rice.kew.routeheader.service.RouteHeaderService;

 import org.kuali.rice.kew.service.KEWServiceLocator;

 import org.kuali.rice.kew.util.KEWConstants;

 import org.kuali.rice.kew.web.KewKualiAction;

 import org.kuali.rice.kim.api.services.KimApiServiceLocator;

 import org.kuali.rice.kim.bo.Person;

 import org.kuali.rice.kns.UserSession;

 import org.kuali.rice.kns.util.GlobalVariables;

 import org.kuali.rice.kns.util.KNSConstants;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import java.sql.Timestamp;

 import java.text.DateFormat;

 import java.util.Collections;

 import java.util.Comparator;

 import java.util.Date;

 import java.util.Iterator;

 import java.util.List;

 /**

  * Struts action for interfacing with the Notes system.

  *

  * @see NoteService

  *

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class NoteAction extends KewKualiAction {

     private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(NoteAction.class);

     @Override

     public ActionForward execute(ActionMapping mapping, ActionForm form,

             HttpServletRequest request, HttpServletResponse response)

             throws Exception {

         initForm(request, form);

         return super.execute(mapping, form, request, response);

     }

     //public ActionForward start(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

     //    return mapping.findForward("allNotesReport");

     //}

     @Override

     public ActionForward start(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

             NoteForm noteForm = (NoteForm) form;

             if(StringUtils.isBlank(noteForm.getShowEdit())) {

                     noteForm.setShowEdit("no");

             }

             return super.start(mapping, noteForm, request, response);

     }

     public ActionForward add(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

         NoteForm noteForm = (NoteForm) form;

         noteForm.setShowEdit("no");

         noteForm.setNoteIdNumber(null);

         retrieveNoteList(request, noteForm);

         noteForm.setShowAdd(Boolean.TRUE);

         return start(mapping, form, request, response);

     }

     public ActionForward deleteAttachment(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

             NoteForm noteForm = (NoteForm) form;

             NoteService noteService = KEWServiceLocator.getNoteService();

             Note note = noteService.getNoteByNoteId(noteForm.getNote().getNoteId());

             noteService.deleteAttachment(note.getAttachments().remove(0));

             noteForm.setDocId(note.getDocumentId());

             noteForm.setNoteIdNumber(note.getNoteId());

             edit(mapping, form, request, response);

             return start(mapping, form, request, response);

             //return mapping.findForward("allNotesReport");

     }

     public ActionForward edit(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

         NoteForm noteForm = (NoteForm) form;

         if ("yes".equalsIgnoreCase(noteForm.getShowEdit())) {

             noteForm.setNoteIdNumber(noteForm.getNote().getNoteId());

         } else {

             noteForm.setShowEdit("yes");

             Note noteToEdit = getNoteService().getNoteByNoteId(noteForm.getNoteIdNumber());

             noteForm.setNote(noteToEdit);

             noteForm.getNote().setNoteCreateLongDate(new Long(noteForm.getNote().getNoteCreateDate().getTime()));

         }

         retrieveNoteList(request, noteForm);

         return start(mapping, form, request, response);

     }

 //    public ActionForward attachFile(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

 //

 //

 //            return start(mapping, form, request, response);

 //    }

     public ActionForward save(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

         NoteForm noteForm = (NoteForm) form;

         Note noteToSave = null;

         if (noteForm.getShowEdit().equals("yes")) {

             noteToSave = noteForm.getNote();

             noteToSave.setNoteCreateDate(new Timestamp(noteToSave.getNoteCreateLongDate().longValue()));

         } else {

             noteToSave = new Note();

             noteToSave.setNoteId(null);

             noteToSave.setDocumentId(noteForm.getDocId());

             noteToSave.setNoteCreateDate(new Timestamp((new Date()).getTime()));

             noteToSave.setNoteAuthorWorkflowId(getUserSession().getPrincipalId());

             noteToSave.setNoteText(noteForm.getAddText());

         }

         CustomNoteAttribute customNoteAttribute = null;

         DocumentRouteHeaderValue routeHeader = getRouteHeaderService().getRouteHeader(noteToSave.getDocumentId());

         boolean canEditNote = false;

         boolean canAddNotes = false;

         if (routeHeader != null) {

             customNoteAttribute = routeHeader.getCustomNoteAttribute();

             if (customNoteAttribute != null) {

                 customNoteAttribute.setUserSession(GlobalVariables.getUserSession());

                 canAddNotes = customNoteAttribute.isAuthorizedToAddNotes();

                 canEditNote = customNoteAttribute.isAuthorizedToEditNote(noteToSave);

             }

         }

         if ((noteForm.getShowEdit().equals("yes") && canEditNote) ||

                 (!noteForm.getShowEdit().equals("yes") && canAddNotes)) {

                 FormFile uploadedFile = (FormFile)noteForm.getFile();

                 if (uploadedFile != null && StringUtils.isNotBlank(uploadedFile.getFileName())) {

                         Attachment attachment = new Attachment();

                         attachment.setAttachedObject(uploadedFile.getInputStream());

                         attachment.setFileName(uploadedFile.getFileName());

                         attachment.setMimeType(uploadedFile.getContentType());

                         attachment.setNote(noteToSave);

                         noteToSave.getAttachments().add(attachment);

                 }

             getNoteService().saveNote(noteToSave);

         }

         if (noteForm.getShowEdit().equals("yes")) {

             noteForm.setNote(new Note());

         } else {

             noteForm.setAddText(null);

         }

         noteForm.setShowEdit("no");

         noteForm.setNoteIdNumber(null);

         retrieveNoteList(request, noteForm);

         return start(mapping, form, request, response);

     }

     public ActionForward delete(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

         NoteForm noteForm = (NoteForm) form;

         Note existingNote = getNoteService().getNoteByNoteId(noteForm.getNoteIdNumber());

         getNoteService().deleteNote(existingNote);

         noteForm.setShowEdit("no");

         noteForm.setNoteIdNumber(null);

         retrieveNoteList(request, noteForm);

         return start(mapping, form, request, response);

     }

     public ActionForward cancel(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

         NoteForm noteForm = (NoteForm) form;

         noteForm.setShowEdit("no");

         noteForm.setNote(new Note());

         noteForm.setNoteIdNumber(null);

         retrieveNoteList(request, noteForm);

         return start(mapping, form, request, response);

     }

     public ActionForward sort(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {

         return start(mapping, form, request, response);

     }

     public ActionMessages initForm(HttpServletRequest request, ActionForm form) throws Exception {

         NoteForm noteForm = (NoteForm) form;

         noteForm.setCurrentUserName(getUserSession().getPerson().getName());

         noteForm.setCurrentDate(getCurrentDate());

         if (! "workflowReport".equalsIgnoreCase(noteForm.getMethodToCall()) && ! "add".equalsIgnoreCase(noteForm.getMethodToCall()) && ! "cancel".equalsIgnoreCase(noteForm.getMethodToCall()) && ! "edit".equalsIgnoreCase(noteForm.getMethodToCall()) && ! "delete".equalsIgnoreCase(noteForm.getMethodToCall()) && ! "save".equalsIgnoreCase(noteForm.getMethodToCall())) {

             retrieveNoteList(request, noteForm);

         }

         boolean showAttachments = CoreFrameworkServiceLocator.getParameterService().getParameterValueAsBoolean(KEWConstants.KEW_NAMESPACE, KNSConstants.DetailTypes.ALL_DETAIL_TYPE, KEWConstants.SHOW_ATTACHMENTS_IND);

         noteForm.setShowAttachments(new Boolean(showAttachments));

         return null;

     }

     private void retrieveNoteList(HttpServletRequest request, NoteForm noteForm) throws Exception {

         if (noteForm.getDocId() != null) {

 //            List allNotes = getNoteService().getNotesByDocumentId(noteForm.getDocId());

             CustomNoteAttribute customNoteAttribute = null;

             DocumentRouteHeaderValue routeHeader = getRouteHeaderService().getRouteHeader(noteForm.getDocId());

             List<Note> allNotes = routeHeader.getNotes();

             boolean canAddNotes = false;

             if (routeHeader != null) {

                 customNoteAttribute = routeHeader.getCustomNoteAttribute();

                 if (customNoteAttribute != null) {

                     customNoteAttribute.setUserSession(GlobalVariables.getUserSession());

                     canAddNotes = customNoteAttribute.isAuthorizedToAddNotes();

                 }

             }

             Iterator<Note> notesIter = allNotes.iterator();

             while (notesIter.hasNext()) {

                 Note singleNote = notesIter.next();

                 singleNote.setNoteCreateLongDate(new Long(singleNote.getNoteCreateDate().getTime()));

                 getAuthorData(singleNote);

                 boolean canEditNote = false;

                 if (customNoteAttribute != null) {

                         canEditNote = customNoteAttribute.isAuthorizedToEditNote(singleNote);

                 }

                 singleNote.setAuthorizedToEdit(new Boolean(canEditNote));

                 if (noteForm.getNoteIdNumber() != null && (noteForm.getNoteIdNumber().intValue() == singleNote.getNoteId().intValue())) {

                     singleNote.setEditingNote(Boolean.TRUE);

                 }

             }

             if (noteForm.getSortNotes() != null && noteForm.getSortNotes().booleanValue()) {

                 if (KEWConstants.Sorting.SORT_SEQUENCE_DSC.equalsIgnoreCase(noteForm.getSortOrder())) {

                     noteForm.setSortOrder(KEWConstants.Sorting.SORT_SEQUENCE_ASC);

                     noteForm.setSortNotes(Boolean.FALSE);

                 } else {

                     noteForm.setSortOrder(KEWConstants.Sorting.SORT_SEQUENCE_DSC);

                     noteForm.setSortNotes(Boolean.FALSE);

                 }

             } else {

                 noteForm.setSortOrder(noteForm.getSortOrder());

             }

             noteForm.setNoteList(sortNotes(allNotes, noteForm.getSortOrder()));

             noteForm.setNumberOfNotes(new Integer(allNotes.size()));

             noteForm.setAuthorizedToAdd(new Boolean(canAddNotes));

             noteForm.setShowAdd(Boolean.TRUE);

             if (! canAddNotes) {

                 noteForm.setShowAdd(Boolean.FALSE);

             } else if (noteForm.getNoteList().size() == 0) {

                 noteForm.setShowAdd(Boolean.FALSE);

             }

         }

     }

     private void getAuthorData(Note note) throws Exception {

         Person user = null;

         String id = "";

         if (note != null && note.getNoteAuthorWorkflowId() != null && ! "".equalsIgnoreCase(note.getNoteAuthorWorkflowId())) {

                 user = KimApiServiceLocator.getPersonService().getPerson(note.getNoteAuthorWorkflowId());

             id = note.getNoteAuthorWorkflowId();

         }

         if (user != null) {

             note.setNoteAuthorFullName(user.getName());

             note.setNoteAuthorEmailAddress(user.getEmailAddressUnmasked());

             note.setNoteAuthorNetworkId(user.getPrincipalId());

         } else {

             note.setNoteAuthorFullName(id + " (Name not Available)");

             note.setNoteAuthorEmailAddress("Not Available");

             note.setNoteAuthorNetworkId("Not Available");

         }

     }

     public String getCurrentDate() {

         Date currentDate = new Date();

         DateFormat dateFormat = RiceConstants.getDefaultDateFormat();

         return dateFormat.format(currentDate);

     }

     private List sortNotes(List allNotes, String sortOrder) {

         final int returnCode = KEWConstants.Sorting.SORT_SEQUENCE_DSC.equalsIgnoreCase(sortOrder) ? -1 : 1;

         try {

           Collections.sort(allNotes,

           new Comparator() {

             @Override

                         public int compare(Object o1, Object o2) {

                           Timestamp date1 = ((Note) o1).getNoteCreateDate();

                           Timestamp date2 = ((Note) o2).getNoteCreateDate();

                 if (date1.before(date2)) {

                   return returnCode * -1;

                 } else if (date1.after(date2)) {

                   return returnCode;

                 } else {

                   return 0;

                 }

             }

           });

       } catch (Throwable e) {

         LOG.error(e.getMessage(), e);

       }

       return allNotes;

     }

     private NoteService getNoteService() {

         return (NoteService) KEWServiceLocator.getService(KEWServiceLocator.NOTE_SERVICE);

     }

     private RouteHeaderService getRouteHeaderService() {

         return (RouteHeaderService) KEWServiceLocator.getService(KEWServiceLocator.DOC_ROUTE_HEADER_SRV);

     }

     private static UserSession getUserSession() {

         return GlobalVariables.getUserSession();

     }

 }