/**
    * 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.statement.config.context;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.kuali.student.common.exceptions.OperationFailedException;
  import org.kuali.student.core.statement.dto.ReqComponentInfo;
  import org.kuali.student.lum.lrc.dto.ResultComponentInfo;
  import org.kuali.student.lum.lrc.dto.ResultComponentTypeInfo;
  import org.kuali.student.lum.lrc.service.LrcService;
  import org.kuali.student.lum.statement.typekey.ReqComponentFieldTypes;
  
  /**
   * This class creates the template context for grade condition type.
   */
  public class LrcContextImpl extends BasicContextImpl {
  	
  	private LrcService lrcService;
  	
  	/** Total credits template token */ 
  	public final static String GRADE_TOKEN = "grade";
      public final static String GRADE_TYPE_TOKEN = "gradeType";	
  
  	public void setLrcService(LrcService lrcService) {
  		this.lrcService = lrcService;
  	}
  
  	private ResultComponentInfo getResultComponentByResultComponentId(String resultComponentId) throws OperationFailedException {
  		if (resultComponentId == null) {
  			return null;
  		}
  		try {
  			return lrcService.getResultComponent(resultComponentId);
  		} catch (Exception e) {
  			throw new OperationFailedException(e.getMessage(), e);
  		}
  	}
  	
  	private String getResultValue(ResultComponentInfo resultComponent, String resultValue) throws OperationFailedException {
  		if(resultComponent == null || resultValue == null) {
  			return null;
  		}
  		for(String rv : resultComponent.getResultValues()) {
  			if(rv.equals(resultValue)) {
  				return rv;
  			}
  		}
  		throw new OperationFailedException("Result value not found: "+resultValue);
  	}
  	
  	private ResultComponentInfo getResultComponentByResultValueId(String resultValueId) throws OperationFailedException {
  		if(resultValueId == null) {
  			return null;
  		}
  		
  		try {
  			List<ResultComponentTypeInfo> typeList = lrcService.getResultComponentTypes();
  			for(ResultComponentTypeInfo type : typeList) {
  				List<String> resultComponentIdList = lrcService.getResultComponentIdsByResultComponentType(type.getId());
  				for(String resultComponentId : resultComponentIdList) {
  					ResultComponentInfo resultComponent = lrcService.getResultComponent(resultComponentId);
  					if(resultComponent.getResultValues().contains(resultValueId)) {
  						return resultComponent;
  					}
  				}
  			}
  		} catch (Exception e) {
  			throw new OperationFailedException(e.getMessage(), e);
  		}
  		throw new OperationFailedException("Result value id not found: "+resultValueId);
  	}
  	
      /**
       * Creates the context map (template data) for the requirement component.
       * 
       * @param reqComponent Requirement component
       * @throws OperationFailedException Creating context map fails
       */
      public Map<String, Object> createContextMap(ReqComponentInfo reqComponent) throws OperationFailedException {
          Map<String, Object> contextMap = new HashMap<String, Object>();
  
  //        String gradeTypeId = getReqComponentFieldValue(reqComponent, ReqComponentFieldTypes.GRADE_TYPE_KEY.getId());
  //        ResultComponentInfo gradeTypeResultComponent = getResultComponentByResultComponentId(gradeTypeId);
 //        if(gradeTypeResultComponent != null) {
 //	        contextMap.put(GRADE_TYPE_TOKEN, gradeTypeResultComponent);
 //        }
 //	
 //        String gradeId = getReqComponentFieldValue(reqComponent, ReqComponentFieldTypes.GRADE_KEY.getId());
 //        String grade = getResultValue(gradeTypeResultComponent, gradeId);
 //        if(grade != null) {
 //        	contextMap.put(GRADE_TOKEN, grade);
 //        }
 
     	
         ResultComponentInfo gradeTypeResultComponent = null;
         String gradeId = getReqComponentFieldValue(reqComponent, ReqComponentFieldTypes.GRADE_KEY.getId());
         if (gradeId == null) {
 			String gradeTypeId = getReqComponentFieldValue(reqComponent, ReqComponentFieldTypes.GRADE_TYPE_KEY.getId());
 			gradeTypeResultComponent = getResultComponentByResultComponentId(gradeTypeId);
 			if (gradeTypeResultComponent != null) {
 				contextMap.put(GRADE_TYPE_TOKEN, gradeTypeResultComponent);
 			}
         } else {
         	gradeTypeResultComponent = getResultComponentByResultValueId(gradeId);
         }
 		if (gradeTypeResultComponent != null) {
 			contextMap.put(GRADE_TYPE_TOKEN, gradeTypeResultComponent);
 		}
 
         String grade = getResultValue(gradeTypeResultComponent, gradeId);
         if(grade != null) {
         	contextMap.put(GRADE_TOKEN, grade);
         }
 
         return contextMap;
     }
 }