/**
    * Copyright 2004-2014 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.kpme.tklm.common;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Set;
  import java.util.TreeSet;
  
  import org.apache.commons.collections.CollectionUtils;
  import org.apache.commons.lang.StringUtils;
  import org.apache.struts.action.ActionForm;
  import org.hsqldb.lib.StringUtil;
  import org.joda.time.DateTime;
  import org.joda.time.LocalDate;
  import org.kuali.kpme.core.KPMENamespace;
  import org.kuali.kpme.core.role.KPMERole;
  import org.kuali.kpme.core.service.HrServiceLocator;
  import org.kuali.kpme.core.util.HrContext;
  import org.kuali.kpme.core.web.KPMEAction;
  import org.kuali.kpme.core.workarea.WorkArea;
  import org.kuali.rice.kim.api.role.RoleService;
  import org.kuali.rice.kim.api.services.KimApiServiceLocator;
  
  public abstract class ApprovalFormAction extends KPMEAction {
  	
  	protected void setSearchFields(ApprovalForm approvalForm) {
  		String principalId = HrContext.getTargetPrincipalId();
  //        String principalId = GlobalVariables.getUserSession().getPrincipalId();
  		LocalDate currentDate = LocalDate.now();
          DateTime currentDateTime = currentDate.toDateTimeAtStartOfDay();
  
          List<String> roleIds = new ArrayList<String>();
          RoleService roleService = KimApiServiceLocator.getRoleService();
          roleIds.add(roleService.getRoleIdByNamespaceCodeAndName(KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.REVIEWER.getRoleName()));
          roleIds.add(roleService.getRoleIdByNamespaceCodeAndName(KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.APPROVER_DELEGATE.getRoleName()));
          roleIds.add(roleService.getRoleIdByNamespaceCodeAndName(KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.APPROVER.getRoleName()));
          roleIds.add(roleService.getRoleIdByNamespaceCodeAndName(KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.PAYROLL_PROCESSOR.getRoleName()));
          roleIds.add(roleService.getRoleIdByNamespaceCodeAndName(KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.PAYROLL_PROCESSOR_DELEGATE.getRoleName()));
  
          Set<Long> workAreas = new TreeSet<Long>();
          //TODO: create permission for approval, and get all roles with that permission
          workAreas.addAll(HrServiceLocator.getKPMERoleService().getWorkAreasForPrincipalInRoles(principalId, roleIds, currentDateTime, true));
          if (CollectionUtils.isEmpty(approvalForm.getPayCalendarGroups())) {
              List<String> principalIds = HrServiceLocator.getAssignmentService().getPrincipalIdsInActiveAssignmentsForWorkAreas(new ArrayList<Long>(workAreas), currentDate);
  	
  	        List<String> calendarGroups = new ArrayList<String>();
  	        if (CollectionUtils.isNotEmpty(principalIds)) {
  	            calendarGroups = getCalendars(principalIds);
  	        }
  	        if (StringUtils.isEmpty(approvalForm.getSelectedPayCalendarGroup())) {
  	        	approvalForm.setSelectedPayCalendarGroup(CollectionUtils.isNotEmpty(calendarGroups) ? calendarGroups.get(0) : null);
  	        }
  	        approvalForm.setPayCalendarGroups(calendarGroups);
  		}
  
          List<WorkArea> workAreasWithoutRoles = HrServiceLocator.getWorkAreaService().getWorkAreasWithoutRoles(new ArrayList<Long>(workAreas), currentDate);
  		if (CollectionUtils.isEmpty(approvalForm.getDepartments())) {
  			Set<String> departments = new TreeSet<String>();
  			
  
              for (WorkArea workArea : workAreasWithoutRoles) {
  			    departments.add(workArea.getDept());
  			}
  			approvalForm.setDepartments(new ArrayList<String>(departments));
              if (StringUtils.isEmpty(approvalForm.getSelectedDept())) {
  			    approvalForm.setSelectedDept(CollectionUtils.isNotEmpty(approvalForm.getDepartments()) ? approvalForm.getDepartments().get(0) : null);
              }
  		}
  
  
          //have depts in approvalForm.getDepartments
          //have workareas too...
  
  		approvalForm.getWorkAreaDescr().clear();
      	//List<Long> workAreaIds = HrServiceLocator.getWorkAreaService().getWorkAreasForDepartment(approvalForm.getSelectedDept(), currentDate);
          //List<WorkArea> workAreaObjs = HrServiceLocator.getWorkAreaService().getWorkAreasWithoutRoles(workAreaIds, currentDate);
          for (WorkArea workAreaObj : workAreasWithoutRoles) {
              //only want workareas in selected department
              if (StringUtils.equals(workAreaObj.getDept(), approvalForm.getSelectedDept())) {
                  Long workArea = workAreaObj.getWorkArea();
                  //String department = workAreaObj.getDept();
                  String description = workAreaObj.getDescription();
  
                  //TODO :  this if statement, in this loop, is not a good thing... lots of stuff happening here.
                  //if (HrServiceLocator.getKPMERoleService().principalHasRoleInWorkArea(principalId, KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.REVIEWER.getRoleName(), workArea, currentDateTime)
                 //        || HrServiceLocator.getKPMERoleService().principalHasRoleInWorkArea(principalId, KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.APPROVER_DELEGATE.getRoleName(), workArea, currentDateTime)
                 //        || HrServiceLocator.getKPMERoleService().principalHasRoleInWorkArea(principalId, KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.APPROVER.getRoleName(), workArea, currentDateTime)
                 //        || HrServiceLocator.getKPMERoleService().principalHasRoleInDepartment(principalId, KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.PAYROLL_PROCESSOR.getRoleName(), department, currentDateTime)
                 //        || HrServiceLocator.getKPMERoleService().principalHasRoleInDepartment(principalId, KPMENamespace.KPME_HR.getNamespaceCode(), KPMERole.PAYROLL_PROCESSOR_DELEGATE.getRoleName(), department, currentDateTime)) {
                     approvalForm.getWorkAreaDescr().put(workArea, description + "(" + workArea + ")");
                 //}
             }
         }
 	}
 	
 	protected abstract List<String> getCalendars(List<String> principalIds);
 	
 	protected List<String> getWorkAreas(ActionForm form) {
 		ApprovalForm approvalForm = (ApprovalForm) form;
 		
 		List<String> workAreas = new ArrayList<String>();
 		
 	    if (StringUtil.isEmpty(approvalForm.getSelectedWorkArea())) {
 	    	for (Long workAreaKey : approvalForm.getWorkAreaDescr().keySet()) {
 	    		workAreas.add(workAreaKey.toString());
 	    	}
 	    } else {
 	    	workAreas.add(approvalForm.getSelectedWorkArea());
 	    }
 	    
 	    return workAreas;
 	}
 
 }