package org.kuali.student.r2.common.class1.search;
   
   import org.kuali.student.r2.common.dto.ContextInfo;
   import org.kuali.student.r2.common.exceptions.DoesNotExistException;
   import org.kuali.student.r2.common.exceptions.InvalidParameterException;
   import org.kuali.student.r2.common.exceptions.MissingParameterException;
   import org.kuali.student.r2.common.exceptions.OperationFailedException;
   import org.kuali.student.r2.common.exceptions.PermissionDeniedException;
   import org.kuali.student.r2.core.class1.type.dto.TypeInfo;
  import org.kuali.student.r2.core.search.dto.SearchParamInfo;
  import org.kuali.student.r2.core.search.dto.SearchRequestInfo;
  import org.kuali.student.r2.core.search.dto.SearchResultInfo;
  import org.kuali.student.r2.core.search.service.SearchService;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Mock implementation of SearchService which can be configured by providing a
   * SearchRequestInfo and the desired SearchResultsInfo via addSearchResult().
   *
   * This is for use in unit tests.
   */
  public class SearchServiceMockImpl implements SearchService {
  
      /*
       *  Storage for search results. Key is build from search key plus concatenated list of params and values.
       */
      private Map<String, SearchResultInfo> searchResults = new HashMap<String, SearchResultInfo>();
  
      @Override
      public List<TypeInfo> getSearchTypes(ContextInfo contextInfo)
              throws InvalidParameterException, MissingParameterException, OperationFailedException {
          return null;
      }
  
      @Override
      public TypeInfo getSearchType(String searchTypeKey, ContextInfo contextInfo)
              throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException {
          return null;
      }
  
      @Override
      public SearchResultInfo search(SearchRequestInfo searchRequestInfo, ContextInfo contextInfo)
              throws MissingParameterException, InvalidParameterException, OperationFailedException, PermissionDeniedException {
          String searchResultsKey = makeSearchResultsKey(searchRequestInfo);
          return searchResults.get(searchResultsKey);
      }
  
      /**
       * Data loader method for mock implementation.
       * @param searchRequestInfo
       * @param searchResultInfo
       */
      public void addSearchResult(SearchRequestInfo searchRequestInfo, SearchResultInfo searchResultInfo) {
          String key = makeSearchResultsKey(searchRequestInfo);
          searchResults.put(key, searchResultInfo);
      }
  
      /**
       * Build a search results key from a SearchRequestInfo in the
       * format: "searchKey[searchParam[value,...], searchParam[value,...]]" where params are in alphabetical order.
       * @param searchRequestInfo The search request.
       * @return A key derived from the SearchRequestInfo.
       */
      private String makeSearchResultsKey(SearchRequestInfo searchRequestInfo) {
          List<String> paramsAndValues = new ArrayList<String>();
  
          for (SearchParamInfo param : searchRequestInfo.getParams()) {
              paramsAndValues.add(param.getKey() + "" + param.getValues().toString());
          }
  
          Collections.sort(paramsAndValues);
          return String.format("%s%s", searchRequestInfo.getSearchKey(), paramsAndValues);
      }
  }