/*
 * Copyright 2005 the original author or authors.
 * 
 * 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.wamblee.test;

import java.io.File;
import java.io.FileFilter;
import java.io.IOException;
import java.util.Map;
import java.util.Properties;
import java.util.TreeMap;

import org.apache.oro.io.AwkFilenameFilter;
import org.hibernate.cfg.Configuration;
import org.wamblee.io.ClassPathResource;
import org.wamblee.io.InputResource;

/**
 * Hibernate utilities. 
 */
public class HibernateUtils {
    
    private static final String DATABASE_PROPS = "test.database.properties";

    /**
     * @param dir
     * @return
     */
    public static Configuration getConfiguration(File dir) throws IOException {
        Configuration conf = new Configuration();
        File[] files = dir.listFiles((FileFilter)(new AwkFilenameFilter(".*\\.hbm\\.xml")));
        for (File f: files) { 
            System.out.println("Mapping file: " + f);
            conf.addFile(f);
        }
      
        Map<String,String> dbProps = getHibernateProperties(); 
        
        for (Map.Entry<String,String> entry : dbProps.entrySet()) {
            System.out.println("Property: " + entry.getKey() + "=" + entry.getValue());
            conf.setProperty(entry.getKey(), entry.getValue());
        }
    
        return conf;
    }
    
    private static Map<String,String> getHibernateProperties() throws IOException {
        
        System.out.println( "Reading properties file: " +  DATABASE_PROPS);
        InputResource lPropFile = new ClassPathResource( DATABASE_PROPS );
        Properties props = new Properties(); 
        props.load( lPropFile.getInputStream( ) );
        
        Map<String,String> result = new TreeMap<String,String>(); 
        result.put( "hibernate.connection.driver_class", props.getProperty( "database.driver" ) );
        result.put( "hibernate.connection.url", props.getProperty( "database.url" ) );
        result.put( "hibernate.connection.username", props.getProperty( "database.username" ) );
        result.put( "hibernate.connection.password", props.getProperty( "database.password" ) );
        
        return result;     
    }

}