package org.kuali.student.lum.lu.ui.dependency.server;

 import java.util.ArrayList;

 import java.util.List;

 import org.kuali.student.core.statement.dto.ReqComponentInfo;

 import org.kuali.student.core.statement.dto.StatementTreeViewInfo;

 import org.kuali.student.core.statement.service.StatementService;

 import org.kuali.student.core.statement.ui.client.widgets.rules.ReqComponentInfoUi;

 import org.kuali.student.core.statement.ui.client.widgets.rules.RulesUtil;

 import org.kuali.student.lum.lu.ui.dependency.client.service.DependencyAnalysisRpcService;

 import org.kuali.student.lum.program.dto.ProgramRequirementInfo;

 import org.kuali.student.lum.program.service.ProgramService;

 import com.google.gwt.user.server.rpc.RemoteServiceServlet;

 public class DependencyAnalysisRpcServlet extends RemoteServiceServlet implements DependencyAnalysisRpcService{

         private static final long serialVersionUID = 1L;

         StatementService statementService;

         ProgramService programService;

         @Override

         public String getRequirementComponentNL(String reqComponentId) {                

                 return null;

         }

         @Override

         public List<String> getRequirementComponentNL(List<String> reqComponentIds) throws Exception{                

                 List<String> reqComponents = new ArrayList<String>();

                 for (String reqComponentId:reqComponentIds){                        

                         String reqCompNL = statementService.getNaturalLanguageForReqComponent(reqComponentId, "KUALI.RULE", "en");

                         reqComponents.add(reqCompNL);

                 }

                 return reqComponents;

         }

         @Override

         public ProgramRequirementInfo getProgramRequirement(String reqId) throws Exception {

                 ProgramRequirementInfo programRequirementInfo = programService.getProgramRequirement(reqId, null, null);

                 setProgReqNL(programRequirementInfo);

                 return programRequirementInfo;

         }

         public StatementService getStatementService() {

                 return statementService;

         }

         public void setStatementService(StatementService statementService) {

                 this.statementService = statementService;

         }

         public ProgramService getProgramService() {

                 return programService;

         }

         public void setProgramService(ProgramService programService) {

                 this.programService = programService;

         }

     private void setProgReqNL(ProgramRequirementInfo programRequirementInfo) throws Exception {

         setReqCompNL(programRequirementInfo.getStatement());

     }

     private void setReqCompNL(StatementTreeViewInfo tree) throws Exception {

         List<StatementTreeViewInfo> statements = tree.getStatements();

         List<ReqComponentInfo> reqComponentInfos = tree.getReqComponents();

          if ((statements != null) && (statements.size() > 0)) {

             // retrieve all statements

             for (StatementTreeViewInfo statement : statements) {

                 setReqCompNL(statement); // inside set the children of this statementTreeViewInfo

             }

         } else if ((reqComponentInfos != null) && (reqComponentInfos.size() > 0)) {

             // retrieve all req. component LEAFS

                 for (int i = 0; i < reqComponentInfos.size(); i++) {

                         ReqComponentInfoUi reqUi = RulesUtil.clone(reqComponentInfos.get(i));

                         reqUi.setNaturalLanguageTranslation(statementService.translateReqComponentToNL(reqUi, "KUALI.RULE", "en"));

                         reqUi.setPreviewNaturalLanguageTranslation(statementService.translateReqComponentToNL(reqUi, "KUALI.RULE.PREVIEW", "en"));

                         reqComponentInfos.set(i, reqUi);

                 }

         }

     }

 }