/*

  * 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);

   }

  }

 }