/*
    *  Copyright 2010, 2011, 2012 Christopher Pheby
    *
    *  Licensed under the Apache 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.apache.org/licenses/LICENSE-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.jadira.usertype.moneyandcurrency.moneta;
  
  import java.util.Properties;
  
  import javax.money.CurrencyUnit;
  import javax.money.Monetary;
  
  import org.hibernate.SessionFactory;
  import org.hibernate.usertype.ParameterizedType;
  import org.jadira.usertype.moneyandcurrency.moneta.util.CurrencyUnitConfigured;
  import org.jadira.usertype.spi.shared.AbstractSingleColumnUserType;
  import org.jadira.usertype.spi.shared.ColumnMapper;
  import org.jadira.usertype.spi.shared.ConfigurationHelper;
  import org.jadira.usertype.spi.shared.IntegratorConfiguredType;
  import org.jadira.usertype.spi.utils.lang.ConcurrentHashMapBackedProperties;
  
  /**
   * Base class for money types that do not map a currency column using a configured currency instead.
   */
  public abstract class AbstractSingleColumnMoneyUserType<T, J, C extends ColumnMapper<T, J>> extends AbstractSingleColumnUserType<T, J, C> implements ParameterizedType, IntegratorConfiguredType {
  
  	private static final long serialVersionUID = 8244061728586173961L;
  
  	private Properties parameterValues;
  
      private CurrencyUnit currencyUnit;
      
      @Override
      public void setParameterValues(Properties parameters) {
      	this.parameterValues = new ConcurrentHashMapBackedProperties(parameters);
      }
      
      protected Properties getParameterValues() {
      	return parameterValues;
      }
      
      @Override
  	public void applyConfiguration(SessionFactory sessionFactory) {
  
      	CurrencyUnitConfigured columnMapper = (CurrencyUnitConfigured) getColumnMapper();
      	if (currencyUnit == null) {
  
      		String currencyString = null;
  			if (parameterValues != null) {
  				currencyString = parameterValues.getProperty("currencyCode");
  			}
  			if (currencyString == null) {
  				currencyString = ConfigurationHelper.getProperty("currencyCode");
  			}
  			if (currencyString != null) {
  
  				currencyUnit = Monetary.getCurrency(currencyString);
  			} else {
  				throw new IllegalStateException(getClass().getSimpleName() + " requires currencyCode to be defined as a parameter, or the jadira.usertype.currencyCode Hibernate property to be defined");
  			}
      	}
      	columnMapper.setCurrencyUnit(currencyUnit);
      }
  }