/**
    * Copyright 2004-2013 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.hr.time.clocklog;
  
  import java.util.LinkedList;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.hr.time.missedpunch.MissedPunchDocument;
  import org.kuali.hr.time.service.base.TkServiceLocator;
  import org.kuali.hr.time.syslunch.rule.SystemLunchRule;
  import org.kuali.hr.time.util.TKContext;
  import org.kuali.hr.time.util.TKUser;
  import org.kuali.hr.time.util.TKUtils;
  import org.kuali.hr.time.util.TkConstants;
  import org.kuali.rice.core.api.util.ConcreteKeyValue;
  import org.kuali.rice.core.api.util.KeyValue;
  import org.kuali.rice.kns.web.struts.form.KualiForm;
  import org.kuali.rice.kns.web.struts.form.KualiTransactionalDocumentFormBase;
  import org.kuali.rice.krad.keyvalues.KeyValuesBase;
  
  public class TkClockActionValuesFinder extends KeyValuesBase {
  
  	@Override
  	public List<KeyValue> getKeyValues() {
  		List<KeyValue> keyLabels = new LinkedList<KeyValue>();
          // get the missed punch doc Id if this is an existing document
          String mpDocId = (String)TKContext.getHttpServletRequest().getParameter(TkConstants.DOCUMENT_ID_REQUEST_NAME);
          if(StringUtils.isBlank(mpDocId)) {
          	mpDocId = (String)TKContext.getHttpServletRequest().getAttribute(TkConstants.DOCUMENT_ID_REQUEST_NAME);
          	if(StringUtils.isBlank(mpDocId)){
              	KualiForm kualiForm = (KualiForm)TKContext.getHttpServletRequest().getAttribute("KualiForm");
              	if(kualiForm instanceof KualiTransactionalDocumentFormBase){
              		mpDocId = ((KualiTransactionalDocumentFormBase)kualiForm).getDocId();
              	}
              }
          	if(StringUtils.isBlank(mpDocId)){
          		 mpDocId = (String)TKContext.getHttpServletRequest().getParameter("docId");
              }
          }
          // if the user is working on an existing missed punch doc, only return available actions based on the initial clock action
          if(!StringUtils.isEmpty(mpDocId)) {
          	MissedPunchDocument mp = TkServiceLocator.getMissedPunchService().getMissedPunchByRouteHeader(mpDocId);
          	if(mp != null) {
          		String clockAction = mp.getClockAction();
          		if(!StringUtils.isEmpty(clockAction)) {
          			Set<String> availableActions = TkConstants.CLOCK_AVAILABLE_ACTION_MAP.get(clockAction);
          			for (String entry : availableActions) {
          				keyLabels.add(new ConcreteKeyValue(entry, TkConstants.CLOCK_ACTION_STRINGS.get(entry)));
          	        }
          		}
          	}
          } else {
              String targetPerson = TKUser.getCurrentTargetPersonId();
              ClockLog lastClock = TkServiceLocator.getClockLogService().getLastClockLog(targetPerson);
              Set<String> validEntries = lastClock != null ?
                      TkConstants.CLOCK_ACTION_TRANSITION_MAP.get(lastClock.getClockAction()) :
                      TkConstants.CLOCK_ACTION_TRANSITION_MAP.get(TkConstants.CLOCK_OUT); // Force CLOCK_IN as next valid action.
              for (String entry : validEntries) {
                  keyLabels.add(new ConcreteKeyValue(entry, TkConstants.CLOCK_ACTION_STRINGS.get(entry)));
              } 
              //#KPME-2178 nullity checked.
              if(lastClock != null){
              	String dept = TkServiceLocator.getJobService().getJob(targetPerson, lastClock.getJobNumber(), TKUtils.getCurrentDate()).getDept();
  	            Long workArea = lastClock.getWorkArea();
  	            Long jobNumber = lastClock.getJobNumber();
  
                  SystemLunchRule slr = TkServiceLocator.getSystemLunchRuleService().getSystemLunchRule(TKUtils.getCurrentDate());
  	            if (slr == null || !slr.getShowLunchButton()) {
  	                keyLabels.remove(new ConcreteKeyValue("LO", "Lunch Out"));
  	                keyLabels.remove(new ConcreteKeyValue("LI", "Lunch In"));
  	            } else {
  	                   if (TkServiceLocator.getDepartmentLunchRuleService().getDepartmentLunchRule(dept, workArea, targetPerson, jobNumber,TKUtils.getCurrentDate()) != null) {
  	                       keyLabels.remove(new ConcreteKeyValue("LO", "Lunch Out"));
  	                       keyLabels.remove(new ConcreteKeyValue("LI", "Lunch In"));
  	                   }
  	            }
              }
              
          }
          
          if(keyLabels.isEmpty()) {		// default is returning all options
          	for (Map.Entry entry : TkConstants.CLOCK_ACTION_STRINGS.entrySet()) {
                keyLabels.add(new ConcreteKeyValue((String)entry.getKey(), (String)entry.getValue()));
           }
         }
   		return keyLabels;
 	}
 
 }