/**
 * Copyright (c) 2002-2012 "Neo Technology,"
 * Network Engine for Objects in Lund AB [http://neotechnology.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package org.neo4j.server.enterprise;

import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Map;
import java.util.Properties;
import java.util.Random;

public class ServerTestUtils
{
//    public static final GraphDatabaseFactory HA_GRAPH_DATABASE_FACTORY = new GraphDatabaseFactory()
//    {
//        @Override
//        public GraphDatabaseAPI createDatabase( String databaseStoreDirectory,
//                Map<String, String> databaseProperties )
//        {
//            GraphDatabaseBuilder builder = new EnterpriseGraphDatabaseFactory().
//                    newHighlyAvailableDatabaseBuilder( databaseStoreDirectory );
//            for (Map.Entry<String, String> config : databaseProperties.entrySet())
//            {
//                builder.setConfig( config.getKey(), config.getValue() );
//
//            }
//            return (GraphDatabaseAPI) builder.newGraphDatabase();
//        }
//    };
//
    public static File createTempDir() throws IOException
    {
        File d = File.createTempFile( "neo4j-test", "dir" );
        if ( !d.delete() )
        {
            throw new RuntimeException( "temp config directory pre-delete failed" );
        }
        if ( !d.mkdirs() )
        {
            throw new RuntimeException( "temp config directory not created" );
        }
        return d;
    }

    public static File createTempPropertyFile() throws IOException
    {
        return createTempPropertyFile( createTempDir() );
    }

    public static void writePropertiesToFile( String outerPropertyName, Map<String, String> properties, File propertyFile )
    {
        writePropertyToFile( outerPropertyName, asOneLine( properties ), propertyFile );
    }

    private static String asOneLine( Map<String, String> properties )
    {
        StringBuilder builder = new StringBuilder();
        for ( Map.Entry<String, String> property : properties.entrySet() )
        {
            builder.append( (builder.length() > 0 ? "," : "") );
            builder.append( property.getKey() + "=" + property.getValue() );
        }
        return builder.toString();
    }

    public static void writePropertyToFile( String name, String value, File propertyFile )
    {
        Properties properties = loadProperties( propertyFile );
        properties.setProperty( name, value );
        storeProperties( propertyFile, properties );
    }

    private static void storeProperties( File propertyFile,
        Properties properties )
    {
        OutputStream out = null;
        try
        {
            out = new FileOutputStream( propertyFile );
            properties.store( out, "" );
        }
        catch ( IOException e )
        {
            throw new RuntimeException( e );
        }
        finally
        {
            safeClose( out );
        }
    }

    private static Properties loadProperties( File propertyFile )
    {
        Properties properties = new Properties();
        if ( propertyFile.exists() )
        {
            InputStream in = null;
            try
            {
                in = new FileInputStream( propertyFile );
                properties.load( in );
            }
            catch ( IOException e )
            {
                throw new RuntimeException( e );
            }
            finally
            {
                safeClose( in );
            }
        }
        return properties;
    }

    private static void safeClose( Closeable closeable )
    {
        if ( closeable != null )
        {
            try
            {
                closeable.close();
            }
            catch ( IOException e )
            {
                e.printStackTrace();
            }
        }
    }

    public static File createTempPropertyFile( File parentDir ) throws IOException
    {
        return new File( parentDir, "test-" + new Random().nextInt() + ".properties" );
    }
}