/**
    * Copyright 2004-2014 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.student.contract.model.validation;
  
  import org.kuali.student.contract.model.SearchCriteria;
  import org.kuali.student.contract.model.SearchType;
  
  import java.util.ArrayList;
  import java.util.Collection;
  
  /**
   * This validates a single criteriainoary entry
   * @author nwright
   */
  public class SearchCriteriaValidator implements ModelValidator {
  
      private SearchCriteria criteria;
      private SearchType searchType;
  
      public SearchCriteriaValidator(SearchCriteria criteria, SearchType searchType) {
          this.criteria = criteria;
          this.searchType = searchType;
      }
      private Collection errors;
  
      @Override
      public Collection<String> validate() {
          errors = new ArrayList();
          basicValidation();
          if (criteria.getParameters() == null) {
              addError("A parameter list is required even if no parameters");
          }
          return errors;
      }
  
      private void basicValidation() {
          if (criteria.getKey().equals("")) {
              addError("criteria key is required");
          }
          if (!criteria.getType().equals("Criteria")) {
              addError("'Type' column in the criteria must be 'Criteria'");
          }
          if (criteria.getName().equals("")) {
              addError("Name is required");
          }
          if (criteria.getDescription().equals("")) {
              addError("Description is required");
          }
          if (!criteria.getDataType().equals("")) {
              addError("Data Type should be blank");
          }
      }
  
      private void addError(String msg) {
          String error = "Error in criteria entry: " + searchType.getKey() + "." + criteria.getKey()
                  + ": " + msg;
          if (!errors.contains(error)) {
              errors.add(error);
          }
      }
  }