/**
    * Copyright 2005-2011 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.location.impl.state;
  
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.exception.RiceIllegalArgumentException;
  import org.kuali.rice.core.api.exception.RiceIllegalStateException;
  import org.kuali.rice.krad.service.BusinessObjectService;
  import org.kuali.rice.location.api.country.Country;
  import org.kuali.rice.location.api.country.CountryService;
  import org.kuali.rice.location.api.services.LocationApiServiceLocator;
  import org.kuali.rice.location.api.state.State;
  import org.kuali.rice.location.api.state.StateService;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  public class StateServiceImpl implements StateService {
  
      private BusinessObjectService businessObjectService;
      private CountryService countryService;
  
      @Override
      public State getState(String countryCode, String code) {
          if (StringUtils.isBlank(countryCode)) {
              throw new RiceIllegalArgumentException(("countryCode is null"));
          }
  
          if (StringUtils.isBlank(code)) {
              throw new RiceIllegalArgumentException(("code is null"));
          }
  
          final Map<String, Object> map = new HashMap<String, Object>();
          map.put("countryCode", countryCode);
          map.put("code", code);
  
          return StateBo.to(businessObjectService.findByPrimaryKey(StateBo.class, Collections.unmodifiableMap(map)));
      }
  
      @Override
      public List<State> findAllStatesInCountry(String countryCode) {
          if (StringUtils.isBlank(countryCode)) {
              throw new RiceIllegalArgumentException(("countryCode is null"));
          }
  
          final Map<String, Object> map = new HashMap<String, Object>();
          map.put("countryCode", countryCode);
          map.put("active", Boolean.TRUE);
  
          final Collection<StateBo> bos = businessObjectService.findMatching(StateBo.class, Collections.unmodifiableMap(map));
          if (bos == null) {
              return Collections.emptyList();
          }
  
          final List<State> toReturn = new ArrayList<State>();
          for (StateBo bo : bos) {
              if (bo != null && bo.isActive()) {
                  toReturn.add(StateBo.to(bo));
              }
          }
  
          return Collections.unmodifiableList(toReturn);
      }
      
      @Override
      public List<State> findAllStatesInCountryByAltCode(String alternateCode) {
          if (StringUtils.isBlank(alternateCode)) {
              throw new RiceIllegalArgumentException(("alternateCode is null"));
          }
          
          Country country = getCountryService().getCountryByAlternateCode(alternateCode);
          
          if(country == null) {
              throw new RiceIllegalStateException("The alternateCode is not a valid Alternate Postal Country Code.  alternateCode: " + alternateCode);
          }
          
          final List<State> toReturn = findAllStatesInCountry(country.getCode());
          return Collections.unmodifiableList(toReturn);
      }
  
      public CountryService getCountryService() {
         if (countryService == null) {
             countryService = LocationApiServiceLocator.getCountryService();
         }
         return countryService;
     }   
 
     public void setCountryService(CountryService countryService) {
         this.countryService = countryService;
     }
     
     public void setBusinessObjectService(BusinessObjectService businessObjectService) {
         this.businessObjectService = businessObjectService;
     }
 }