/*

  * Copyright 2009 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.contract.model.validation;

 import org.kuali.student.contract.model.Constraint;

 import org.kuali.student.contract.model.Dictionary;

 import org.kuali.student.contract.model.DictionaryModel;

 import org.kuali.student.contract.model.Field;

 import org.kuali.student.contract.model.XmlType;

 import org.kuali.student.contract.model.util.ModelFinder;

 import java.util.ArrayList;

 import java.util.Collection;

 import java.util.HashSet;

 import java.util.List;

 import java.util.Set;

 /**

  * Validates the entire spreadsheet model

  * @author nwright

  */

 public class DictionaryModelValidator implements ModelValidator {

     private DictionaryModel model;

     private ModelFinder finder;

     public DictionaryModelValidator(DictionaryModel model) {

         this.model = model;

         this.finder = new ModelFinder(model);

     }

     List<String> errors;

     @Override

     public Collection<String> validate() {

         errors = new ArrayList();

         validateConstraints();

         validateFields();

         validateDefaultDictionary();

         validateStateOverrideDictionary();

         checkForDuplicateDictionaryEntries();

         return errors;

     }

     private void validateConstraints() {

         if (model.getConstraints().size() == 0) {

             addError("No constraints found");

         }

         for (Constraint cons : model.getConstraints()) {

             ConstraintValidator cv = new ConstraintValidator(cons);

             errors.addAll(cv.validate());

         }

     }

     private void validateFields() {

         if (model.getFields().size() == 0) {

             addError("No fields found");

         }

         for (Field field : model.getFields()) {

             FieldValidator fv = new FieldValidator(field, model);

             errors.addAll(fv.validate());

         }

     }

     private void validateDefaultDictionary() {

         if (finder.findDefaultDictionary().size() == 0) {

             addError("No dictionary entries for the (default) state found");

         }

         for (Dictionary dict : finder.findDefaultDictionary()) {

             DictionaryValidator dv = new DictionaryValidator(dict, model);

             errors.addAll(dv.validate());

         }

     }

     private void validateStateOverrideDictionary() {

         if (finder.findStateOverrideDictionary().size() == 0) {

             addError("No dictionary entries that override for the (default) state found");

         }

         for (Dictionary dict : finder.findStateOverrideDictionary()) {

             DictionaryValidator dv = new DictionaryValidator(dict, model);

             errors.addAll(dv.validate());

         }

     }

     private void checkForDuplicateDictionaryEntries() {

         Set dups = new HashSet();

         for (Dictionary dict : finder.findDefaultDictionary()) {

             if (!dups.add(dict.getId())) {

                 addError("Duplicate ID's found in dictionary: " + dict.getId());

             }

         }

         for (Dictionary dict : finder.findStateOverrideDictionary()) {

             if (!dups.add(dict.getId())) {

                 addError("Duplicate ID's found in dictionary: " + dict.getId());

             }

         }

     }

     private void addError(String msg) {

         String error = "Error in overall spreadsheet: " + msg;

         if (!errors.contains(error)) {

             errors.add(error);

         }

     }

 }