/**
    * Copyright 2010 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.student.lum.lu.ui.course.server.gwt;
  
  import java.util.Map;
  
  import org.apache.log4j.Logger;
  import org.kuali.student.common.ui.server.gwt.AbstractDataService;
  import org.kuali.student.core.assembly.data.Data;
  import org.kuali.student.core.assembly.transform.ProposalWorkflowFilter;
  import org.kuali.student.core.exceptions.DoesNotExistException;
  import org.kuali.student.core.exceptions.OperationFailedException;
  import org.kuali.student.lum.course.dto.CourseInfo;
  import org.kuali.student.lum.course.service.CourseService;
  
  public class CourseDataService extends AbstractDataService {
  
  	private static final long serialVersionUID = 1L;
  	final static Logger LOG = Logger.getLogger(CourseDataService.class);
  
  	private static final String DEFAULT_METADATA_STATE = "draft";
  	
  	private CourseService courseService;
  	
  
  	@Override
  	protected Object get(String id) throws Exception {
  		CourseInfo courseInfo = null;
  
  		try {
  			courseInfo = courseService.getCourse(id);
  		} catch (DoesNotExistException dne) {
  			LOG.info("Course not found for key " + id + ". Course loaded from proposal instead.");
  		}		
  		
  		return courseInfo; 
  	}
  
  	@Override
  	protected Object save(Object dto, Map<String, Object> properties) throws Exception {
  		CourseInfo courseInfo = (CourseInfo)dto;
  		if(properties!=null&&"kuali.proposal.type.course.modify".equals((String)properties.get(ProposalWorkflowFilter.WORKFLOW_DOC_TYPE))){
  			//For Modify Course, see if we need to create a new version instead of create
  			if(courseInfo.getId() == null){
  				courseInfo = courseService.createNewCourseVersion(courseInfo.getVersionInfo().getVersionIndId(), courseInfo.getVersionInfo().getVersionComment());
  			}else{
  				courseInfo = courseService.updateCourse(courseInfo);
  			}
  		}else{
  			if (courseInfo.getId() == null){
  				courseInfo = courseService.createCourse(courseInfo);
  			} else {
  				courseInfo = courseService.updateCourse(courseInfo);
  			}
  		}
  		return courseInfo;
  	}
  	
  	@Override
  	protected String getDefaultMetaDataState() {
  		return DEFAULT_METADATA_STATE;
  	}
  
  	@Override
  	protected String getDefaultWorkflowDocumentType() {
  		return "kuali.proposal.type.course.create";
  	}
  
  	@Override
  	protected boolean checkDocumentLevelPermissions() {
  		return true;
  	}
  
  	@Override
  	protected Class<?> getDtoClass() {
  		return CourseInfo.class;
  	}
  
  	public void setCourseService(CourseService courseService) {
  		this.courseService = courseService;
  	}
  
  	public Data createNewCourseVersion(String courseId, String versionComment) throws OperationFailedException {
  		try {
  			//FIXME calling getData after createNewCourseVersion is inefficient, but we need to have the transformations/filters be applied
  			CourseInfo course = this.courseService.createNewCourseVersion(courseId, versionComment);
 			return getData(course.getId());
 		} catch (Exception e) {
 			throw new OperationFailedException("Error getting data",e);
 		} 
 		
 	}	
 
 }